feat: 1-to-1 message render + web data-lake backend

backend/migrations/versions/a9c3e7f1d2b4_media_unique_id.py

@@ -0,0 +1,27 @@
+"""media unique_id for edit detection
+
+Revision ID: a9c3e7f1d2b4
+Revises: f7a2c9e1b3d5
+Create Date: 2026-05-30 04:00:00.000000
+
+"""
+
+from collections.abc import Sequence
+
+import sqlalchemy as sa
+from alembic import op
+
+revision: str = "a9c3e7f1d2b4"
+down_revision: str | None = "f7a2c9e1b3d5"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    op.add_column("media", sa.Column("unique_id", sa.String(), nullable=True))
+    op.add_column("media_versions", sa.Column("unique_id", sa.String(), nullable=True))
+
+
+def downgrade() -> None:
+    op.drop_column("media_versions", "unique_id")
+    op.drop_column("media", "unique_id")

backend/migrations/versions/f7a2c9e1b3d5_media_versions.py

@@ -0,0 +1,56 @@
+"""media versions (keep every edited media)
+
+Revision ID: f7a2c9e1b3d5
+Revises: a3f1c8e94d72
+Create Date: 2026-05-30 03:00:00.000000
+
+"""
+
+from collections.abc import Sequence
+
+import sqlalchemy as sa
+from alembic import op
+
+revision: str = "f7a2c9e1b3d5"
+down_revision: str | None = "a3f1c8e94d72"
+branch_labels: str | Sequence[str] | None = None
+depends_on: str | Sequence[str] | None = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "media_versions",
+        sa.Column("id", sa.BigInteger(), autoincrement=True, nullable=False),
+        sa.Column("account_id", sa.Integer(), nullable=False),
+        sa.Column("chat_id", sa.BigInteger(), nullable=False),
+        sa.Column("message_id", sa.BigInteger(), nullable=False),
+        sa.Column(
+            "observed_at",
+            sa.DateTime(timezone=True),
+            server_default=sa.text("now()"),
+            nullable=False,
+        ),
+        sa.Column("kind", sa.String(), nullable=False),
+        sa.Column("storage_key", sa.String(), nullable=False),
+        sa.Column("file_size", sa.BigInteger(), nullable=True),
+        sa.Column("mime", sa.String(), nullable=True),
+        sa.Column("ttl_seconds", sa.Integer(), nullable=True),
+        sa.PrimaryKeyConstraint("id"),
+        sa.UniqueConstraint(
+            "account_id",
+            "chat_id",
+            "message_id",
+            "storage_key",
+            name="uq_media_versions_content",
+        ),
+    )
+    op.create_index(
+        "ix_media_versions_message",
+        "media_versions",
+        ["account_id", "chat_id", "message_id", "observed_at"],
+    )
+
+
+def downgrade() -> None:
+    op.drop_index("ix_media_versions_message", table_name="media_versions")
+    op.drop_table("media_versions")

backend/src/api/app.py

@@ -1,16 +1,20 @@
 from collections.abc import AsyncGenerator
 from contextlib import asynccontextmanager
+from pathlib import Path
 
 import asyncpg
 from dishka.integrations.fastapi import DishkaRoute, FromDishka, setup_dishka
 from fastapi import FastAPI
+from fastapi.responses import FileResponse
 from fastmcp.utilities.lifespan import combine_lifespans
 from starlette.applications import Starlette
 
 from api.auth import BearerAuthMiddleware
 from api.mcp.server import mcp
 from api.routers import (
+    accounts,
     annotations,
+    avatars,
     backfill,
     chats,
     folders,
@@ -54,12 +58,14 @@ async def health(pool: FromDishka[asyncpg.Pool]) -> dict[str, bool]:
     return {"db": db_ok, "timescaledb": bool(timescale_ok)}
 
 
+app.include_router(accounts.router)
 app.include_router(policy.router)
 app.include_router(folders.router)
 app.include_router(backfill.router)
 app.include_router(search.router)
 app.include_router(chats.router)
 app.include_router(media.router)
+app.include_router(avatars.router)
 app.include_router(social.router)
 app.include_router(presence.router)
 app.include_router(peers.router)
@@ -68,6 +74,18 @@ app.include_router(watches.router)
 
 app.mount("/mcp", mcp_app)
 
+_spa_dir = Path(env.api.static_dir).resolve()
+if _spa_dir.is_dir():
+    _spa_index = _spa_dir / "index.html"
+
+    @app.get("/{spa_path:path}")
+    async def serve_spa(spa_path: str) -> FileResponse:
+        candidate = (_spa_dir / spa_path).resolve()
+        if spa_path and candidate.is_relative_to(_spa_dir) and candidate.is_file():
+            return FileResponse(candidate)
+        return FileResponse(_spa_index)
+
+
 app.add_middleware(BearerAuthMiddleware, token=_token)
 
 setup_dishka(container, app)

backend/src/api/routers/accounts.py

@@ -0,0 +1,13 @@
+import asyncpg
+from dishka.integrations.fastapi import DishkaRoute, FromDishka
+from fastapi import APIRouter
+
+from utils.read import accounts
+from utils.read.models import AccountView
+
+router = APIRouter(prefix="/api", tags=["accounts"], route_class=DishkaRoute)
+
+
+@router.get("/accounts")
+async def list_accounts(pool: FromDishka[asyncpg.Pool]) -> list[AccountView]:
+    return await accounts.list_accounts(pool)

backend/src/api/routers/avatars.py

@@ -0,0 +1,40 @@
+from typing import Annotated
+
+import asyncpg
+from dishka.integrations.fastapi import DishkaRoute, FromDishka
+from fastapi import APIRouter, HTTPException, Query
+from fastapi.responses import FileResponse
+
+from utils.jobs import enqueue
+from utils.read.avatars import current_avatar
+from utils.storage import ContentAddressedStorage
+
+router = APIRouter(prefix="/api/avatars", tags=["avatars"], route_class=DishkaRoute)
+
+
+@router.get("/{owner_kind}/{owner_id}")
+async def serve_avatar(
+    pool: FromDishka[asyncpg.Pool],
+    storage: FromDishka[ContentAddressedStorage],
+    owner_kind: str,
+    owner_id: int,
+    account_id: Annotated[int, Query()],
+) -> FileResponse:
+    avatar = await current_avatar(pool, account_id, owner_kind, owner_id)
+    if avatar is None:
+        raise HTTPException(status_code=404, detail="avatar not found")
+    if not avatar.downloaded or avatar.storage_key is None:
+        await enqueue(
+            pool,
+            account_id,
+            "fetch_avatar",
+            {
+                "owner_kind": owner_kind,
+                "owner_id": owner_id,
+                "unique_id": avatar.unique_id,
+            },
+        )
+        raise HTTPException(status_code=409, detail="avatar not downloaded; fetching")
+    return FileResponse(
+        storage.url(avatar.storage_key), media_type=avatar.mime or "image/jpeg"
+    )

backend/src/api/routers/chats.py

@@ -3,7 +3,9 @@ from typing import Annotated
 import asyncpg
 from dishka.integrations.fastapi import DishkaRoute, FromDishka
 from fastapi import APIRouter, Query
+from pydantic import BaseModel
 
+from utils.jobs import enqueue
 from utils.read import chats
 from utils.read.models import (
     DEFAULT_LIMIT,
@@ -15,6 +17,11 @@ from utils.read.models import (
 
 router = APIRouter(prefix="/api", tags=["chats"], route_class=DishkaRoute)
 
+
+class EnrichRequest(BaseModel):
+    account_id: int
+
+
 AccountId = Annotated[int, Query()]
 Limit = Annotated[int, Query()]
 Offset = Annotated[int, Query()]
@@ -48,6 +55,14 @@ async def chat_history(
     )
 
 
+@router.post("/chats/{chat_id}/enrich")
+async def enrich_chat(
+    pool: FromDishka[asyncpg.Pool], chat_id: int, body: EnrichRequest
+) -> dict[str, int]:
+    job_id = await enqueue(pool, body.account_id, "enrich_chat", {"chat_id": chat_id})
+    return {"job_id": job_id}
+
+
 @router.get("/chats/{chat_id}/messages/{message_id}/versions")
 async def message_versions(
     pool: FromDishka[asyncpg.Pool], chat_id: int, message_id: int, account_id: AccountId

backend/src/api/routers/media.py

@@ -1,10 +1,17 @@
+from typing import Annotated
+
 import asyncpg
 from dishka.integrations.fastapi import DishkaRoute, FromDishka
-from fastapi import APIRouter, HTTPException
+from fastapi import APIRouter, HTTPException, Query
 from fastapi.responses import FileResponse
 
-from utils.read.media import get_media
-from utils.read.models import MediaView
+from utils.read.media import (
+    get_media,
+    get_media_version,
+    get_media_versions,
+    get_message_media,
+)
+from utils.read.models import MediaVersionView, MediaView
 from utils.storage import ContentAddressedStorage
 
 router = APIRouter(prefix="/api/media", tags=["media"], route_class=DishkaRoute)
@@ -18,6 +25,44 @@ async def media_meta(pool: FromDishka[asyncpg.Pool], media_id: int) -> MediaView
     return media
 
 
+@router.get("/versions/{chat_id}/{message_id}")
+async def message_media_versions(
+    pool: FromDishka[asyncpg.Pool],
+    chat_id: int,
+    message_id: int,
+    account_id: Annotated[int, Query()],
+) -> list[MediaVersionView]:
+    return await get_media_versions(pool, account_id, chat_id, message_id)
+
+
+@router.get("/version/{version_id}")
+async def serve_media_version(
+    pool: FromDishka[asyncpg.Pool],
+    storage: FromDishka[ContentAddressedStorage],
+    version_id: int,
+) -> FileResponse:
+    version = await get_media_version(pool, version_id)
+    if version is None:
+        raise HTTPException(status_code=404, detail="media version not found")
+    return FileResponse(
+        storage.url(version.storage_key),
+        media_type=version.mime or "application/octet-stream",
+    )
+
+
+@router.get("/message/{chat_id}/{message_id}")
+async def message_media(
+    pool: FromDishka[asyncpg.Pool],
+    chat_id: int,
+    message_id: int,
+    account_id: Annotated[int, Query()],
+) -> MediaView:
+    media = await get_message_media(pool, account_id, chat_id, message_id)
+    if media is None:
+        raise HTTPException(status_code=404, detail="media not found")
+    return media
+
+
 @router.get("/{media_id}")
 async def serve_media(
     pool: FromDishka[asyncpg.Pool],

backend/src/api/routers/peers.py

@@ -12,6 +12,14 @@ router = APIRouter(prefix="/api", tags=["peers"], route_class=DishkaRoute)
 AccountId = Annotated[int, Query()]
 
 
+@router.get("/peers/batch")
+async def get_peers(
+    pool: FromDishka[asyncpg.Pool], account_id: AccountId, ids: Annotated[str, Query()]
+) -> list[PeerView]:
+    parsed = [int(part) for part in ids.split(",") if part.strip()]
+    return await peers.get_peers(pool, account_id, parsed)
+
+
 @router.get("/peers/{peer_id}")
 async def get_peer(
     pool: FromDishka[asyncpg.Pool], peer_id: int, account_id: AccountId

backend/src/userbot/handlers/edits.py

@@ -4,7 +4,7 @@ from userbot import PyroClient
 from userbot.modules.capture import repository
 from userbot.modules.capture.chat_meta import meta_from_chat
 from userbot.modules.capture.message import sender_id
-from userbot.modules.media import self_destruct_ttl
+from userbot.modules.media import capture_media, media_unique_id, self_destruct_ttl
 
 
 @PyroClient.on_edited_message()
@@ -18,7 +18,7 @@ async def on_edited_message(client: PyroClient, message: Message) -> None:
     toggles = ctx.resolve(meta)
     if not toggles.track_edits_deletes:
         return
-    await repository.add_version(
+    changed = await repository.add_version(
         ctx.pool,
         ctx.account_id,
         chat_id,
@@ -28,9 +28,12 @@ async def on_edited_message(client: PyroClient, message: Message) -> None:
         message.text or message.caption,
         str(message),
         message.edit_date,
+        media_unique_id(message),
         has_media=message.media is not None,
         is_self_destruct=self_destruct_ttl(message) is not None,
     )
+    if changed and message.media is not None:
+        await capture_media(client, message, ctx, chat_id, message.id, toggles)
 
 
 handlers = on_edited_message.handlers

backend/src/userbot/modules/avatars/__init__.py

@@ -1,3 +1,4 @@
 from userbot.modules.avatars.downloader import capture_avatar
+from userbot.modules.avatars.repository import note_avatar
 
-__all__ = ["capture_avatar"]
+__all__ = ["capture_avatar", "note_avatar"]

backend/src/userbot/modules/avatars/repository.py

@@ -1,3 +1,5 @@
+import json
+
 import asyncpg
 
 _INSERT_AVATAR = """
@@ -13,6 +15,16 @@ SELECT 1 FROM avatars
 WHERE account_id = $1 AND owner_id = $2 AND unique_id = $3
 """
 
+_GET_FILE = """
+SELECT raw ->> 'file_id' AS file_id, downloaded FROM avatars
+WHERE account_id = $1 AND owner_kind = $2 AND owner_id = $3 AND unique_id = $4
+"""
+
+_MARK_DOWNLOADED = """
+UPDATE avatars SET downloaded = true, storage_key = $5, file_size = $6
+WHERE account_id = $1 AND owner_kind = $2 AND owner_id = $3 AND unique_id = $4
+"""
+
 
 async def avatar_exists(
     pool: asyncpg.Pool, account_id: int, owner_id: int, unique_id: str
@@ -46,3 +58,54 @@ async def insert_avatar(  # noqa: PLR0913
         downloaded,
         raw,
     )
+
+
+async def note_avatar(  # noqa: PLR0913
+    pool: asyncpg.Pool,
+    account_id: int,
+    owner_id: int,
+    owner_kind: str,
+    unique_id: str,
+    file_id: str,
+) -> None:
+    await insert_avatar(
+        pool,
+        account_id,
+        owner_id,
+        owner_kind,
+        unique_id,
+        None,
+        None,
+        None,
+        json.dumps({"file_id": file_id}),
+        downloaded=False,
+    )
+
+
+async def get_avatar_file(
+    pool: asyncpg.Pool, account_id: int, owner_kind: str, owner_id: int, unique_id: str
+) -> tuple[str | None, bool] | None:
+    row = await pool.fetchrow(_GET_FILE, account_id, owner_kind, owner_id, unique_id)
+    if row is None:
+        return None
+    return row["file_id"], row["downloaded"]
+
+
+async def mark_avatar_downloaded(  # noqa: PLR0913
+    pool: asyncpg.Pool,
+    account_id: int,
+    owner_kind: str,
+    owner_id: int,
+    unique_id: str,
+    storage_key: str,
+    file_size: int,
+) -> None:
+    await pool.execute(
+        _MARK_DOWNLOADED,
+        account_id,
+        owner_kind,
+        owner_id,
+        unique_id,
+        storage_key,
+        file_size,
+    )

backend/src/userbot/modules/capture/context.py

@@ -1,6 +1,7 @@
 import asyncpg
 from pyrogram import Client
 
+from userbot.modules.capture.identity import ChatMetaCache, PeerIdentityCache
 from userbot.modules.contacts import ContactCache
 from userbot.modules.folders import FolderCache
 from userbot.modules.watches import WatchCache
@@ -25,6 +26,8 @@ class CaptureContext:
         self.folders = folders
         self.contacts = contacts
         self.watches = WatchCache(pool, account_id)
+        self.peer_identity = PeerIdentityCache()
+        self.chat_meta = ChatMetaCache()
         self.policies = PolicySet()
 
     async def reload_policies(self) -> None:

backend/src/userbot/modules/capture/identity.py

@@ -0,0 +1,110 @@
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+from userbot.modules.capture.chat_meta import chat_kind
+from userbot.modules.profiles.parse import ProfileFields, snapshot_from_high_level
+from userbot.modules.profiles.repository import get_peer, write_profile
+from utils.policy.models import ChatKind
+
+if TYPE_CHECKING:
+    import asyncpg
+    from pyrogram.types import Message
+
+    from userbot.modules.capture.context import CaptureContext
+
+
+class PeerIdentityCache:
+    def __init__(self) -> None:
+        self._cache: dict[int, ProfileFields | None] = {}
+
+    async def changed(
+        self, pool: asyncpg.Pool, account_id: int, peer_id: int, fields: ProfileFields
+    ) -> bool:
+        if peer_id not in self._cache:
+            self._cache[peer_id] = await get_peer(pool, account_id, peer_id)
+        if self._cache[peer_id] == fields:
+            return False
+        self._cache[peer_id] = fields
+        return True
+
+
+class ChatMetaCache:
+    def __init__(self) -> None:
+        self._cache: dict[int, tuple[str | None, str | None]] = {}
+
+    async def changed(
+        self,
+        pool: asyncpg.Pool,
+        account_id: int,
+        chat_id: int,
+        meta: tuple[str | None, str | None],
+    ) -> bool:
+        from userbot.modules.groups.repository import (  # noqa: PLC0415
+            get_latest_chat_meta,
+        )
+
+        if chat_id not in self._cache:
+            self._cache[chat_id] = await get_latest_chat_meta(pool, account_id, chat_id)
+        if self._cache[chat_id] == meta:
+            return False
+        self._cache[chat_id] = meta
+        return True
+
+
+async def _capture_peer(message: Message, ctx: CaptureContext) -> None:
+    user = message.from_user
+    if user is None:
+        return
+    fields, photo_file_id, photo_unique_id = snapshot_from_high_level(user)
+    if not await ctx.peer_identity.changed(ctx.pool, ctx.account_id, user.id, fields):
+        return
+    await write_profile(ctx.pool, ctx.account_id, user.id, fields, str(user))
+    if photo_file_id and photo_unique_id:
+        from userbot.modules.avatars import note_avatar  # noqa: PLC0415
+
+        await note_avatar(
+            ctx.pool, ctx.account_id, user.id, "peer", photo_unique_id, photo_file_id
+        )
+
+
+async def _capture_chat(message: Message, ctx: CaptureContext) -> None:
+    chat = message.chat
+    if (
+        chat is None
+        or chat.id is None
+        or message.date is None
+        or chat_kind(chat.type) is ChatKind.DM
+    ):
+        return
+    photo = chat.photo
+    photo_unique_id = photo.big_photo_unique_id if photo else None
+    photo_file_id = photo.big_file_id if photo else None
+    meta = (chat.title, photo_unique_id)
+    if not await ctx.chat_meta.changed(ctx.pool, ctx.account_id, chat.id, meta):
+        return
+    from userbot.modules.groups.repository import insert_chat_history  # noqa: PLC0415
+
+    await insert_chat_history(
+        ctx.pool,
+        ctx.account_id,
+        chat.id,
+        message.id,
+        "meta",
+        chat.title,
+        photo_unique_id,
+        None,
+        message.date,
+        str(message),
+    )
+    if photo_file_id and photo_unique_id:
+        from userbot.modules.avatars import note_avatar  # noqa: PLC0415
+
+        await note_avatar(
+            ctx.pool, ctx.account_id, chat.id, "chat", photo_unique_id, photo_file_id
+        )
+
+
+async def capture_identity(message: Message, ctx: CaptureContext) -> None:
+    await _capture_peer(message, ctx)
+    await _capture_chat(message, ctx)

backend/src/userbot/modules/capture/message.py

@@ -51,6 +51,9 @@ async def capture_message(
         has_media=message.media is not None,
         is_self_destruct=self_destruct_ttl(message) is not None,
     )
+    from userbot.modules.capture.identity import capture_identity  # noqa: PLC0415
+
+    await capture_identity(message, ctx)
     await capture_media(client, message, ctx, chat_id, message.id, toggles)
     buttons = callbacks(message)
     if buttons:

backend/src/userbot/modules/capture/repository.py

@@ -23,28 +23,71 @@ INSERT INTO messages
      has_media, is_self_destruct, edited_at)
 VALUES ($1, $2, $3, $4, $5, $6, $7::jsonb, $8, $9, now())
 ON CONFLICT (account_id, chat_id, message_id, date) DO UPDATE SET
+    text = EXCLUDED.text,
+    raw = EXCLUDED.raw,
+    has_media = EXCLUDED.has_media,
+    is_self_destruct = EXCLUDED.is_self_destruct,
     edited_at = now()
 """
 
 _INSERT_VERSION = """
 INSERT INTO message_versions
     (account_id, chat_id, message_id, observed_at, edit_date, text, raw)
-VALUES ($1, $2, $3, now(), $4, $5, $6::jsonb)
+VALUES ($1, $2, $3, clock_timestamp(), $4, $5, $6::jsonb)
 ON CONFLICT DO NOTHING
 """
 
+_SNAPSHOT_ORIGINAL = """
+INSERT INTO message_versions
+    (account_id, chat_id, message_id, observed_at, edit_date, text, raw)
+SELECT account_id, chat_id, message_id, clock_timestamp(), NULL, text, raw
+FROM messages m
+WHERE m.account_id = $1 AND m.chat_id = $2 AND m.message_id = $3
+  AND NOT EXISTS (
+    SELECT 1 FROM message_versions v
+    WHERE v.account_id = m.account_id AND v.chat_id = m.chat_id
+      AND v.message_id = m.message_id
+  )
+ON CONFLICT DO NOTHING
+"""
+
+_CURRENT_CONTENT = """
+SELECT
+    m.text AS text,
+    (SELECT d.unique_id FROM media d
+     WHERE d.account_id = m.account_id AND d.chat_id = m.chat_id
+       AND d.message_id = m.message_id) AS media_unique_id
+FROM messages m
+WHERE m.account_id = $1 AND m.chat_id = $2 AND m.message_id = $3
+ORDER BY m.date DESC LIMIT 1
+"""
+
+_CURRENT_MEDIA = """
+SELECT unique_id, storage_key, file_size, downloaded FROM media
+WHERE account_id = $1 AND chat_id = $2 AND message_id = $3
+"""
+
+_INSERT_MEDIA_VERSION = """
+INSERT INTO media_versions
+    (account_id, chat_id, message_id, observed_at, kind, storage_key,
+     file_size, mime, ttl_seconds, unique_id)
+VALUES ($1, $2, $3, clock_timestamp(), $4, $5, $6, $7, $8, $9)
+ON CONFLICT (account_id, chat_id, message_id, storage_key) DO NOTHING
+"""
+
 _INSERT_MEDIA = """
 INSERT INTO media
     (account_id, chat_id, message_id, kind, storage_key, file_size, mime,
-     ttl_seconds, downloaded)
-VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)
+     ttl_seconds, downloaded, unique_id)
+VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10)
 ON CONFLICT (account_id, chat_id, message_id) DO UPDATE SET
     kind = EXCLUDED.kind,
     storage_key = EXCLUDED.storage_key,
     file_size = EXCLUDED.file_size,
     mime = EXCLUDED.mime,
     ttl_seconds = EXCLUDED.ttl_seconds,
-    downloaded = EXCLUDED.downloaded
+    downloaded = EXCLUDED.downloaded,
+    unique_id = EXCLUDED.unique_id
 """
 
 
@@ -111,11 +154,20 @@ async def add_version(  # noqa: PLR0913
     text: str | None,
     raw: str,
     edit_date: datetime | None,
+    media_unique_id: str | None,
     *,
     has_media: bool,
     is_self_destruct: bool,
-) -> None:
+) -> bool:
     async with pool.acquire() as conn, conn.transaction():
+        current = await conn.fetchrow(_CURRENT_CONTENT, account_id, chat_id, message_id)
+        text_changed = current is None or current["text"] != text
+        media_changed = (
+            current is not None and current["media_unique_id"] != media_unique_id
+        )
+        if not (text_changed or media_changed):
+            return False
+        await conn.execute(_SNAPSHOT_ORIGINAL, account_id, chat_id, message_id)
         await conn.execute(
             _TOUCH_EDITED,
             account_id,
@@ -131,6 +183,13 @@ async def add_version(  # noqa: PLR0913
         await conn.execute(
             _INSERT_VERSION, account_id, chat_id, message_id, edit_date, text, raw
         )
+    return True
+
+
+async def current_media(
+    pool: asyncpg.Pool, account_id: int, chat_id: int, message_id: int
+) -> asyncpg.Record | None:
+    return await pool.fetchrow(_CURRENT_MEDIA, account_id, chat_id, message_id)
 
 
 async def insert_media(  # noqa: PLR0913
@@ -143,21 +202,37 @@ async def insert_media(  # noqa: PLR0913
     file_size: int | None,
     mime: str | None,
     ttl_seconds: int | None,
+    unique_id: str | None,
     *,
     downloaded: bool,
 ) -> None:
-    await pool.execute(
-        _INSERT_MEDIA,
-        account_id,
-        chat_id,
-        message_id,
-        kind,
-        storage_key,
-        file_size,
-        mime,
-        ttl_seconds,
-        downloaded,
-    )
+    async with pool.acquire() as conn, conn.transaction():
+        await conn.execute(
+            _INSERT_MEDIA,
+            account_id,
+            chat_id,
+            message_id,
+            kind,
+            storage_key,
+            file_size,
+            mime,
+            ttl_seconds,
+            downloaded,
+            unique_id,
+        )
+        if storage_key is not None:
+            await conn.execute(
+                _INSERT_MEDIA_VERSION,
+                account_id,
+                chat_id,
+                message_id,
+                kind,
+                storage_key,
+                file_size,
+                mime,
+                ttl_seconds,
+                unique_id,
+            )
 
 
 async def insert_callbacks(

backend/src/userbot/modules/groups/repository.py

@@ -17,6 +17,26 @@ VALUES ($1, $2, $3, $4, $5, $6, $7, $8::jsonb)
 ON CONFLICT (account_id, chat_id, message_id, user_id) DO NOTHING
 """
 
+_LATEST_TITLE = """
+SELECT title FROM chat_history
+WHERE account_id = $1 AND chat_id = $2 AND title IS NOT NULL
+ORDER BY ts DESC LIMIT 1
+"""
+
+_LATEST_PHOTO = """
+SELECT photo_unique_id FROM chat_history
+WHERE account_id = $1 AND chat_id = $2 AND photo_unique_id IS NOT NULL
+ORDER BY ts DESC LIMIT 1
+"""
+
+
+async def get_latest_chat_meta(
+    pool: asyncpg.Pool, account_id: int, chat_id: int
+) -> tuple[str | None, str | None]:
+    title = await pool.fetchval(_LATEST_TITLE, account_id, chat_id)
+    photo_unique_id = await pool.fetchval(_LATEST_PHOTO, account_id, chat_id)
+    return title, photo_unique_id
+
 
 async def insert_chat_history(  # noqa: PLR0913
     pool: asyncpg.Pool,

backend/src/userbot/modules/jobs/handlers/__init__.py

@@ -1,3 +1,9 @@
-from userbot.modules.jobs.handlers import backfill, fetch_media, transcribe
+from userbot.modules.jobs.handlers import (
+    backfill,
+    enrich_chat,
+    fetch_avatar,
+    fetch_media,
+    transcribe,
+)
 
-__all__ = ["backfill", "fetch_media", "transcribe"]
+__all__ = ["backfill", "enrich_chat", "fetch_avatar", "fetch_media", "transcribe"]

backend/src/userbot/modules/jobs/handlers/enrich_chat.py

@@ -0,0 +1,91 @@
+from datetime import UTC, datetime
+
+from pyrogram import Client
+from pyrogram.errors import BadRequest, Forbidden
+from pyrogram.types import User
+
+from userbot.modules.avatars import note_avatar
+from userbot.modules.capture.context import CaptureContext
+from userbot.modules.groups.repository import insert_chat_history
+from userbot.modules.jobs.context import JobContext
+from userbot.modules.jobs.registry import register
+from userbot.modules.profiles.parse import snapshot_from_high_level
+from userbot.modules.profiles.repository import write_profile
+
+MEMBER_CAP = 200
+
+_MISSING_SENDERS = """
+SELECT DISTINCT sender_id FROM messages
+WHERE account_id = $1 AND chat_id = $2 AND sender_id > 0
+  AND NOT EXISTS (
+    SELECT 1 FROM peers p WHERE p.account_id = $1 AND p.peer_id = messages.sender_id
+  )
+LIMIT 100
+"""
+
+
+async def _save_user(ctx: CaptureContext, user: User) -> None:
+    fields, photo_file_id, photo_unique_id = snapshot_from_high_level(user)
+    await write_profile(ctx.pool, ctx.account_id, user.id, fields, str(user))
+    if photo_file_id and photo_unique_id:
+        await note_avatar(
+            ctx.pool, ctx.account_id, user.id, "peer", photo_unique_id, photo_file_id
+        )
+
+
+async def _enrich_chat_meta(client: Client, ctx: CaptureContext, chat_id: int) -> None:
+    chat = await client.get_chat(chat_id)
+    photo = chat.photo
+    photo_unique_id = photo.big_photo_unique_id if photo else None
+    photo_file_id = photo.big_file_id if photo else None
+    await insert_chat_history(
+        ctx.pool,
+        ctx.account_id,
+        chat_id,
+        0,
+        "meta",
+        chat.title,
+        photo_unique_id,
+        None,
+        datetime.now(UTC),
+        str(chat),
+    )
+    if photo_file_id and photo_unique_id:
+        await note_avatar(
+            ctx.pool, ctx.account_id, chat_id, "chat", photo_unique_id, photo_file_id
+        )
+
+
+async def _enrich_members(client: Client, ctx: CaptureContext, chat_id: int) -> None:
+    try:
+        async for member in client.get_chat_members(chat_id, limit=MEMBER_CAP):
+            if isinstance(member.user, User):
+                await _save_user(ctx, member.user)
+    except (BadRequest, Forbidden):
+        return
+
+
+async def _enrich_senders(client: Client, ctx: CaptureContext, chat_id: int) -> None:
+    rows = await ctx.pool.fetch(_MISSING_SENDERS, ctx.account_id, chat_id)
+    ids = [row["sender_id"] for row in rows]
+    for sender_id in ids:
+        try:
+            user = await client.get_users(sender_id)
+        except BadRequest:
+            continue
+        if isinstance(user, User):
+            await _save_user(ctx, user)
+
+
+@register("enrich_chat")
+async def enrich_chat(ctx: JobContext) -> None:
+    client = ctx.client
+    if client is None:
+        return
+    capture = getattr(client, "capture", None)
+    if capture is None:
+        return
+    chat_id = ctx.job.params["chat_id"]
+    await _enrich_chat_meta(client, capture, chat_id)
+    await _enrich_members(client, capture, chat_id)
+    await _enrich_senders(client, capture, chat_id)

backend/src/userbot/modules/jobs/handlers/fetch_avatar.py

@@ -0,0 +1,40 @@
+from io import BytesIO
+
+from userbot.modules.avatars.repository import get_avatar_file, mark_avatar_downloaded
+from userbot.modules.jobs.context import JobContext
+from userbot.modules.jobs.registry import register
+
+
+@register("fetch_avatar")
+async def fetch_avatar(ctx: JobContext) -> None:
+    client = ctx.client
+    if client is None:
+        return
+    capture = getattr(client, "capture", None)
+    if capture is None:
+        return
+    owner_kind = ctx.job.params["owner_kind"]
+    owner_id = ctx.job.params["owner_id"]
+    unique_id = ctx.job.params["unique_id"]
+    found = await get_avatar_file(
+        ctx.pool, ctx.account_id, owner_kind, owner_id, unique_id
+    )
+    if found is None:
+        return
+    file_id, downloaded = found
+    if downloaded or file_id is None:
+        return
+    buffer = await client.download_media(file_id, in_memory=True)
+    if not isinstance(buffer, BytesIO):
+        return
+    data = buffer.getvalue()
+    storage_key = capture.storage.put(data)
+    await mark_avatar_downloaded(
+        ctx.pool,
+        ctx.account_id,
+        owner_kind,
+        owner_id,
+        unique_id,
+        storage_key,
+        len(data),
+    )

backend/src/userbot/modules/media/__init__.py

@@ -1,3 +1,7 @@
-from userbot.modules.media.downloader import capture_media, self_destruct_ttl
+from userbot.modules.media.downloader import (
+    capture_media,
+    media_unique_id,
+    self_destruct_ttl,
+)
 
-__all__ = ["capture_media", "self_destruct_ttl"]
+__all__ = ["capture_media", "media_unique_id", "self_destruct_ttl"]

backend/src/userbot/modules/media/downloader.py

@@ -33,6 +33,11 @@ def self_destruct_ttl(message: Message) -> int | None:
     return getattr(obj, "ttl_seconds", None) if obj is not None else None
 
 
+def media_unique_id(message: Message) -> str | None:
+    _, obj = media_object(message)
+    return getattr(obj, "file_unique_id", None) if obj is not None else None
+
+
 async def capture_media(  # noqa: PLR0913
     client: Client,
     message: Message,
@@ -44,6 +49,7 @@ async def capture_media(  # noqa: PLR0913
     kind, obj = media_object(message)
     if obj is None:
         return
+    unique_id = getattr(obj, "file_unique_id", None)
     ttl = getattr(obj, "ttl_seconds", None)
     want = toggles.self_destruct_media if ttl else toggles.media
     file_size = getattr(obj, "file_size", None)
@@ -51,12 +57,25 @@ async def capture_media(  # noqa: PLR0913
     storage_key: str | None = None
     downloaded = False
     if want:
-        buffer = await client.download_media(message, in_memory=True)
-        if isinstance(buffer, BytesIO):
-            data = buffer.getvalue()
-            storage_key = ctx.storage.put(data)
-            file_size = len(data)
+        existing = await repository.current_media(
+            ctx.pool, ctx.account_id, chat_id, message_id
+        )
+        if (
+            existing is not None
+            and existing["downloaded"]
+            and existing["unique_id"] == unique_id
+            and existing["storage_key"] is not None
+        ):
+            storage_key = existing["storage_key"]
+            file_size = existing["file_size"]
             downloaded = True
+        else:
+            buffer = await client.download_media(message, in_memory=True)
+            if isinstance(buffer, BytesIO):
+                data = buffer.getvalue()
+                storage_key = ctx.storage.put(data)
+                file_size = len(data)
+                downloaded = True
     await repository.insert_media(
         ctx.pool,
         ctx.account_id,
@@ -67,5 +86,6 @@ async def capture_media(  # noqa: PLR0913
         file_size,
         mime,
         ttl,
+        unique_id,
         downloaded=downloaded,
     )

backend/src/userbot/modules/profiles/__init__.py

@@ -1,7 +1,13 @@
 from userbot.modules.profiles.parse import (
     ProfileFields,
     active_username,
+    snapshot_from_high_level,
     snapshot_from_user,
 )
 
-__all__ = ["ProfileFields", "active_username", "snapshot_from_user"]
+__all__ = [
+    "ProfileFields",
+    "active_username",
+    "snapshot_from_high_level",
+    "snapshot_from_user",
+]

backend/src/userbot/modules/profiles/parse.py

@@ -37,3 +37,20 @@ def snapshot_from_user(
         is_deleted_account=bool(getattr(raw_user, "deleted", False)),
     )
     return fields, photo_file_id, photo_unique_id
+
+
+def snapshot_from_high_level(
+    user: User,
+) -> tuple[ProfileFields, str | None, str | None]:
+    photo = user.photo
+    photo_unique_id = photo.big_photo_unique_id if photo else None
+    photo_file_id = photo.big_file_id if photo else None
+    fields = ProfileFields(
+        first_name=user.first_name,
+        last_name=user.last_name,
+        username=user.username,
+        phone=user.phone_number,
+        photo_unique_id=photo_unique_id,
+        is_deleted_account=bool(user.is_deleted),
+    )
+    return fields, photo_file_id, photo_unique_id

backend/src/utils/env.py

@@ -34,6 +34,7 @@ class TelegramSettings(BaseSettings):
 class ApiSettings(BaseSettings):
     host: str = "0.0.0.0"  # noqa: S104
     port: int = 8080
+    static_dir: str = "static"
 
 
 class AuthSettings(BaseSettings):

backend/src/utils/read/accounts.py

@@ -0,0 +1,11 @@
+import asyncpg
+
+from utils.read.models import AccountView
+
+
+async def list_accounts(pool: asyncpg.Pool) -> list[AccountView]:
+    rows = await pool.fetch(
+        "SELECT account_id, label, phone, tg_user_id, is_active FROM accounts "
+        "ORDER BY account_id"
+    )
+    return [AccountView(**dict(row)) for row in rows]

backend/src/utils/read/avatars.py

@@ -0,0 +1,30 @@
+import asyncpg
+
+from utils.read.models import AvatarRef
+
+_PEER_UNIQUE_ID = """
+SELECT photo_unique_id FROM peers
+WHERE account_id = $1 AND peer_id = $2
+"""
+
+_CHAT_UNIQUE_ID = """
+SELECT photo_unique_id FROM chat_history
+WHERE account_id = $1 AND chat_id = $2 AND photo_unique_id IS NOT NULL
+ORDER BY ts DESC LIMIT 1
+"""
+
+_AVATAR = """
+SELECT unique_id, storage_key, downloaded, mime FROM avatars
+WHERE account_id = $1 AND owner_id = $2 AND unique_id = $3
+"""
+
+
+async def current_avatar(
+    pool: asyncpg.Pool, account_id: int, owner_kind: str, owner_id: int
+) -> AvatarRef | None:
+    query = _PEER_UNIQUE_ID if owner_kind == "peer" else _CHAT_UNIQUE_ID
+    unique_id = await pool.fetchval(query, account_id, owner_id)
+    if unique_id is None:
+        return None
+    row = await pool.fetchrow(_AVATAR, account_id, owner_id, unique_id)
+    return AvatarRef(**dict(row)) if row else None

backend/src/utils/read/chats.py

@@ -1,13 +1,46 @@
 import asyncpg
 
-from utils.read.models import ChatListItem, MessageVersionView, MessageView, Page
+from utils.read.message_view import build_message_view, load_raw, media_ref_from
+from utils.read.models import (
+    ChatListItem,
+    MediaRef,
+    MessageVersionView,
+    MessageView,
+    Page,
+)
 
 _MESSAGE_COLS = (
-    "chat_id, message_id, date, sender_id, text, "
-    "has_media, is_self_destruct, edited_at, deleted_at"
+    "chat_id, message_id, date, sender_id, text, has_media, is_self_destruct, "
+    "edited_at, deleted_at, raw, raw->>'media_group_id' AS media_group_id"
 )
 
 
+async def _media_map(
+    pool: asyncpg.Pool, account_id: int, rows: list[asyncpg.Record]
+) -> dict[tuple[int, int], asyncpg.Record]:
+    message_ids = list({row["message_id"] for row in rows})
+    if not message_ids:
+        return {}
+    media_rows = await pool.fetch(
+        "SELECT id, chat_id, message_id, kind, downloaded, mime, file_size, "
+        "ttl_seconds FROM media "
+        "WHERE account_id = $1 AND message_id = ANY($2::bigint[])",
+        account_id,
+        message_ids,
+    )
+    return {(row["chat_id"], row["message_id"]): row for row in media_rows}
+
+
+def _single_media(
+    row: asyncpg.Record, raw: dict, media_by_key: dict[tuple[int, int], asyncpg.Record]
+) -> list[MediaRef]:
+    media_row = media_by_key.get((row["chat_id"], row["message_id"]))
+    if not (row["has_media"] or media_row):
+        return []
+    ref = media_ref_from(row["message_id"], raw, media_row)
+    return [ref] if ref else []
+
+
 def _peer_title(
     first: str | None, last: str | None, username: str | None
 ) -> str | None:
@@ -28,7 +61,24 @@ async def list_chats(
         "WHERE p.account_id = $1 AND p.peer_id = m.chat_id) AS username, "
         "(SELECT ch.title FROM chat_history ch "
         "WHERE ch.account_id = $1 AND ch.chat_id = m.chat_id "
-        "AND ch.title IS NOT NULL ORDER BY ch.ts DESC LIMIT 1) AS group_title "
+        "AND ch.title IS NOT NULL ORDER BY ch.ts DESC LIMIT 1) AS group_title, "
+        "EXISTS (SELECT 1 FROM avatars a "
+        "WHERE a.account_id = $1 AND a.owner_id = m.chat_id) AS has_avatar, "
+        "(SELECT COALESCE((p.raw->>'is_bot')::bool, (p.raw->>'bot')::bool, false) "
+        "FROM peers p WHERE p.account_id = $1 AND p.peer_id = m.chat_id) AS is_bot, "
+        "(SELECT COALESCE((p.raw->>'is_contact')::bool, (p.raw->>'contact')::bool, "
+        "false) FROM peers p "
+        "WHERE p.account_id = $1 AND p.peer_id = m.chat_id) AS is_contact, "
+        "(SELECT ch.raw->'chat'->>'type' = 'ChatType.CHANNEL' FROM chat_history ch "
+        "WHERE ch.account_id = $1 AND ch.chat_id = m.chat_id "
+        "AND ch.raw->'chat'->>'type' IS NOT NULL "
+        "ORDER BY ch.ts DESC LIMIT 1) AS is_broadcast, "
+        "(SELECT lm.text FROM messages lm "
+        "WHERE lm.account_id = $1 AND lm.chat_id = m.chat_id "
+        "ORDER BY lm.date DESC, lm.message_id DESC LIMIT 1) AS last_text, "
+        "(SELECT lm.sender_id FROM messages lm "
+        "WHERE lm.account_id = $1 AND lm.chat_id = m.chat_id "
+        "ORDER BY lm.date DESC, lm.message_id DESC LIMIT 1) AS last_sender_id "
         "FROM messages m WHERE m.account_id = $1 "
         "GROUP BY m.chat_id ORDER BY last_date DESC LIMIT $2 OFFSET $3",
         account_id,
@@ -44,8 +94,15 @@ async def list_chats(
             ChatListItem(
                 chat_id=row["chat_id"],
                 title=title,
+                kind="private" if row["chat_id"] > 0 else "group",
+                has_avatar=row["has_avatar"],
+                is_bot=bool(row["is_bot"]),
+                is_contact=bool(row["is_contact"]),
+                is_broadcast=bool(row["is_broadcast"]),
                 message_count=row["message_count"],
                 last_date=row["last_date"],
+                last_text=row["last_text"],
+                last_sender_id=row["last_sender_id"],
             )
         )
     return items
@@ -70,7 +127,43 @@ async def get_chat_history(
         page.capped_limit,
         page.offset,
     )
-    return [MessageView(**dict(row)) for row in rows]
+    media_by_key = await _media_map(pool, account_id, rows)
+    parsed = [(row, load_raw(row["raw"])) for row in rows]
+    views: list[MessageView] = []
+    index = 0
+    while index < len(parsed):
+        group_id = parsed[index][0]["media_group_id"]
+        end = index + 1
+        if group_id is not None:
+            while end < len(parsed) and parsed[end][0]["media_group_id"] == group_id:
+                end += 1
+        members = parsed[index:end]
+        if len(members) == 1:
+            row, raw = members[0]
+            views.append(
+                build_message_view(row, raw, _single_media(row, raw, media_by_key))
+            )
+        else:
+            views.append(_build_album(members, media_by_key))
+        index = end
+    return views
+
+
+def _build_album(
+    members: list[tuple[asyncpg.Record, dict]],
+    media_by_key: dict[tuple[int, int], asyncpg.Record],
+) -> MessageView:
+    ordered = sorted(members, key=lambda m: m[0]["message_id"])
+    media: list[MediaRef] = []
+    for row, raw in ordered:
+        media_row = media_by_key.get((row["chat_id"], row["message_id"]))
+        ref = media_ref_from(row["message_id"], raw, media_row)
+        if ref:
+            media.append(ref)
+    primary_row, primary_raw = next(
+        ((row, raw) for row, raw in ordered if row["text"]), ordered[0]
+    )
+    return build_message_view(primary_row, primary_raw, media)
 
 
 async def get_deleted_messages(
@@ -88,7 +181,14 @@ async def get_deleted_messages(
         f"ORDER BY deleted_at DESC LIMIT ${len(params) - 1} OFFSET ${len(params)}",
         *params,
     )
-    return [MessageView(**dict(row)) for row in rows]
+    media_by_key = await _media_map(pool, account_id, rows)
+    views: list[MessageView] = []
+    for row in rows:
+        raw = load_raw(row["raw"])
+        views.append(
+            build_message_view(row, raw, _single_media(row, raw, media_by_key))
+        )
+    return views
 
 
 async def get_message_versions(

backend/src/utils/read/media.py

@@ -1,12 +1,14 @@
 import asyncpg
 
-from utils.read.models import MediaView
+from utils.read.models import MediaVersionView, MediaView
 
 _MEDIA_COLS = (
     "id, account_id, chat_id, message_id, kind, storage_key, file_size, "
     "mime, ttl_seconds, downloaded, extracted_text, created_at"
 )
 
+_VERSION_COLS = "id, kind, storage_key, file_size, mime, observed_at"
+
 
 async def get_media(pool: asyncpg.Pool, media_id: int) -> MediaView | None:
     row = await pool.fetchrow(
@@ -27,3 +29,27 @@ async def get_message_media(
         message_id,
     )
     return MediaView(**dict(row)) if row else None
+
+
+async def get_media_versions(
+    pool: asyncpg.Pool, account_id: int, chat_id: int, message_id: int
+) -> list[MediaVersionView]:
+    rows = await pool.fetch(
+        f"SELECT {_VERSION_COLS} FROM media_versions "  # noqa: S608
+        "WHERE account_id = $1 AND chat_id = $2 AND message_id = $3 "
+        "ORDER BY observed_at",
+        account_id,
+        chat_id,
+        message_id,
+    )
+    return [MediaVersionView(**dict(row)) for row in rows]
+
+
+async def get_media_version(
+    pool: asyncpg.Pool, version_id: int
+) -> MediaVersionView | None:
+    row = await pool.fetchrow(
+        f"SELECT {_VERSION_COLS} FROM media_versions WHERE id = $1",  # noqa: S608
+        version_id,
+    )
+    return MediaVersionView(**dict(row)) if row else None

backend/src/utils/read/message_view.py

@@ -0,0 +1,404 @@
+import json
+from datetime import datetime
+from typing import Any
+
+import asyncpg
+from pydantic import ValidationError
+
+from utils.read.models import (
+    ContactView,
+    EntityView,
+    ForwardView,
+    InlineButton,
+    LocationView,
+    MediaRef,
+    MessageView,
+    PollOption,
+    PollView,
+    ReactionCount,
+    ReplyView,
+    ServiceView,
+    StickerView,
+    WebPageView,
+)
+
+_MEDIA_KEYS = (
+    "photo",
+    "video",
+    "animation",
+    "voice",
+    "video_note",
+    "audio",
+    "document",
+    "sticker",
+)
+
+
+def load_raw(raw: str | None) -> dict[str, Any]:
+    if not raw:
+        return {}
+    try:
+        parsed = json.loads(raw)
+    except (ValueError, TypeError):
+        return {}
+    return parsed if isinstance(parsed, dict) else {}
+
+
+def _enum(value: object) -> str | None:
+    if not isinstance(value, str):
+        return None
+    return value.rsplit(".", 1)[-1].lower()
+
+
+def _parse_dt(value: object) -> datetime | None:
+    if not isinstance(value, str):
+        return None
+    try:
+        return datetime.fromisoformat(value)
+    except ValueError:
+        return None
+
+
+def _peer_name(user: dict[str, Any]) -> str | None:
+    name = " ".join(
+        part for part in (user.get("first_name"), user.get("last_name")) if part
+    )
+    return name or user.get("username")
+
+
+def _entities(raw: dict[str, Any]) -> list[EntityView]:
+    source = raw.get("entities") or raw.get("caption_entities") or []
+    if not isinstance(source, list):
+        return []
+    out: list[EntityView] = []
+    for item in source:
+        if not isinstance(item, dict):
+            continue
+        kind = _enum(item.get("type"))
+        offset = item.get("offset")
+        length = item.get("length")
+        if kind is None or not isinstance(offset, int) or not isinstance(length, int):
+            continue
+        custom = item.get("custom_emoji_id")
+        out.append(
+            EntityView(
+                type=kind,
+                offset=offset,
+                length=length,
+                url=item.get("url"),
+                custom_emoji_id=str(custom) if custom is not None else None,
+                language=item.get("language"),
+            )
+        )
+    return out
+
+
+def _media_kind(message: dict[str, Any]) -> str | None:
+    kind = _enum(message.get("media"))
+    if kind:
+        return kind
+    for key in _MEDIA_KEYS:
+        if key in message:
+            return key
+    return None
+
+
+def _reply(raw: dict[str, Any]) -> ReplyView | None:
+    reply = raw.get("reply_to_message")
+    reply_id = raw.get("reply_to_message_id")
+    if not isinstance(reply, dict):
+        return ReplyView(message_id=reply_id) if reply_id else None
+    sender = reply.get("from_user")
+    sender_chat = reply.get("sender_chat")
+    sender_id = None
+    sender_name = None
+    if isinstance(sender, dict):
+        sender_id = sender.get("id")
+        sender_name = _peer_name(sender)
+    elif isinstance(sender_chat, dict):
+        sender_id = sender_chat.get("id")
+        sender_name = sender_chat.get("title")
+    return ReplyView(
+        message_id=reply.get("id") or reply_id,
+        sender_id=sender_id,
+        sender_name=sender_name,
+        text=reply.get("text") or reply.get("caption"),
+        media_kind=_media_kind(reply),
+    )
+
+
+def _forward(raw: dict[str, Any]) -> ForwardView | None:
+    origin = raw.get("forward_origin")
+    if not isinstance(origin, dict):
+        return None
+    tag = origin.get("_")
+    date = _parse_dt(origin.get("date"))
+    if tag == "MessageOriginUser":
+        user = origin.get("sender_user")
+        user = user if isinstance(user, dict) else {}
+        return ForwardView(
+            kind="user", from_id=user.get("id"), from_name=_peer_name(user), date=date
+        )
+    if tag == "MessageOriginChannel":
+        chat = origin.get("chat")
+        chat = chat if isinstance(chat, dict) else {}
+        return ForwardView(
+            kind="channel",
+            chat_id=chat.get("id"),
+            chat_title=chat.get("title"),
+            message_id=origin.get("message_id"),
+            signature=origin.get("author_signature"),
+            date=date,
+        )
+    return ForwardView(
+        kind="hidden", from_name=origin.get("sender_user_name"), date=date
+    )
+
+
+def _reactions(raw: dict[str, Any]) -> list[ReactionCount]:
+    container = raw.get("reactions")
+    if not isinstance(container, dict):
+        return []
+    items = container.get("reactions")
+    if not isinstance(items, list):
+        return []
+    out: list[ReactionCount] = []
+    for item in items:
+        if not isinstance(item, dict):
+            continue
+        custom = item.get("custom_emoji_id")
+        out.append(
+            ReactionCount(
+                emoji=item.get("emoji"),
+                custom_emoji_id=str(custom) if custom is not None else None,
+                count=item.get("count") or 0,
+                chosen="chosen_order" in item,
+            )
+        )
+    return out
+
+
+def _button_kind(button: dict[str, Any]) -> str:
+    if button.get("url"):
+        return "url"
+    if button.get("callback_data") is not None:
+        return "callback"
+    if "switch_inline_query" in button or "switch_inline_query_current_chat" in button:
+        return "switch"
+    return "other"
+
+
+def _inline_buttons(raw: dict[str, Any]) -> list[list[InlineButton]]:
+    markup = raw.get("reply_markup")
+    if not isinstance(markup, dict):
+        return []
+    rows = markup.get("inline_keyboard")
+    if not isinstance(rows, list):
+        return []
+    out: list[list[InlineButton]] = []
+    for row in rows:
+        if not isinstance(row, list):
+            continue
+        buttons: list[InlineButton] = []
+        for button in row:
+            if not isinstance(button, dict):
+                continue
+            data = button.get("callback_data")
+            buttons.append(
+                InlineButton(
+                    text=button.get("text") or "",
+                    kind=_button_kind(button),
+                    url=button.get("url"),
+                    data=data if isinstance(data, str) else None,
+                )
+            )
+        if buttons:
+            out.append(buttons)
+    return out
+
+
+def _web_page(raw: dict[str, Any]) -> WebPageView | None:
+    page = raw.get("web_page")
+    if not isinstance(page, dict) or not page.get("url"):
+        return None
+    return WebPageView(
+        url=page["url"],
+        display_url=page.get("display_url"),
+        type=page.get("type"),
+        site_name=page.get("site_name"),
+        title=page.get("title"),
+        description=page.get("description"),
+        has_photo="photo" in page,
+    )
+
+
+def _text_of(value: dict[str, Any] | str | None) -> str | None:
+    if isinstance(value, dict):
+        text = value.get("text")
+        return text if isinstance(text, str) else None
+    return value if isinstance(value, str) else None
+
+
+def _poll(raw: dict[str, Any]) -> PollView | None:
+    poll = raw.get("poll")
+    if not isinstance(poll, dict):
+        return None
+    raw_options = poll.get("options")
+    options: list[PollOption] = []
+    if isinstance(raw_options, list):
+        for option in raw_options:
+            if not isinstance(option, dict):
+                continue
+            options.append(
+                PollOption(
+                    text=_text_of(option.get("text")) or "",
+                    voter_count=option.get("voter_count") or 0,
+                    vote_percentage=option.get("vote_percentage") or 0,
+                    correct=option.get("is_correct"),
+                )
+            )
+    return PollView(
+        question=_text_of(poll.get("question")) or "",
+        options=options,
+        total_voter_count=poll.get("total_voter_count") or 0,
+        quiz=_enum(poll.get("type")) == "quiz",
+        closed=bool(poll.get("is_closed")),
+        multiple=bool(poll.get("allows_multiple_answers")),
+        anonymous=bool(poll.get("is_anonymous", True)),
+    )
+
+
+def _contact(raw: dict[str, Any]) -> ContactView | None:
+    contact = raw.get("contact")
+    if not isinstance(contact, dict):
+        return None
+    return ContactView(
+        user_id=contact.get("user_id"),
+        first_name=contact.get("first_name"),
+        last_name=contact.get("last_name"),
+        phone_number=contact.get("phone_number"),
+    )
+
+
+def _location(raw: dict[str, Any]) -> LocationView | None:
+    venue = raw.get("venue")
+    if isinstance(venue, dict):
+        point = venue.get("location")
+        point = point if isinstance(point, dict) else {}
+        return LocationView(
+            latitude=point.get("latitude"),
+            longitude=point.get("longitude"),
+            title=venue.get("title"),
+            address=venue.get("address"),
+        )
+    point = raw.get("location")
+    if not isinstance(point, dict):
+        return None
+    return LocationView(
+        latitude=point.get("latitude"), longitude=point.get("longitude")
+    )
+
+
+def _service(raw: dict[str, Any]) -> ServiceView | None:
+    kind = _enum(raw.get("service"))
+    if kind is None:
+        return None
+    members = raw.get("new_chat_members") or raw.get("left_chat_member")
+    member_ids = None
+    if isinstance(members, list):
+        member_ids = [m["id"] for m in members if isinstance(m, dict) and "id" in m]
+    elif isinstance(members, dict) and "id" in members:
+        member_ids = [members["id"]]
+    pinned = raw.get("pinned_message")
+    call = raw.get("phone_call_ended")
+    return ServiceView(
+        kind=kind,
+        member_ids=member_ids,
+        pinned_message_id=pinned.get("id") if isinstance(pinned, dict) else None,
+        duration=call.get("duration") if isinstance(call, dict) else None,
+    )
+
+
+def _sticker(raw: dict[str, Any]) -> StickerView | None:
+    sticker = raw.get("sticker")
+    if not isinstance(sticker, dict):
+        return None
+    return StickerView(
+        emoji=sticker.get("emoji"),
+        set_name=sticker.get("set_name"),
+        width=sticker.get("width"),
+        height=sticker.get("height"),
+        mime=sticker.get("mime_type"),
+        is_animated=bool(sticker.get("is_animated")),
+        is_video=bool(sticker.get("is_video")),
+    )
+
+
+def media_ref_from(
+    message_id: int, raw: dict[str, Any], media_row: asyncpg.Record | None
+) -> MediaRef | None:
+    kind = (media_row["kind"] if media_row else None) or _media_kind(raw)
+    if kind is None:
+        return None
+    obj = raw.get(kind)
+    obj = obj if isinstance(obj, dict) else {}
+    width = obj.get("width") or obj.get("length")
+    height = obj.get("height") or obj.get("length")
+    return MediaRef(
+        message_id=message_id,
+        id=media_row["id"] if media_row else None,
+        kind=kind,
+        downloaded=bool(media_row["downloaded"]) if media_row else False,
+        width=width,
+        height=height,
+        duration=obj.get("duration"),
+        mime=(media_row["mime"] if media_row else None) or obj.get("mime_type"),
+        file_size=(media_row["file_size"] if media_row else None)
+        or obj.get("file_size"),
+        ttl_seconds=media_row["ttl_seconds"] if media_row else None,
+    )
+
+
+def _base_fields(row: asyncpg.Record) -> dict[str, Any]:
+    return {
+        "chat_id": row["chat_id"],
+        "message_id": row["message_id"],
+        "date": row["date"],
+        "sender_id": row["sender_id"],
+        "text": row["text"],
+        "has_media": row["has_media"],
+        "is_self_destruct": row["is_self_destruct"],
+        "edited_at": row["edited_at"],
+        "deleted_at": row["deleted_at"],
+        "media_group_id": row["media_group_id"],
+    }
+
+
+def build_message_view(
+    row: asyncpg.Record, raw: dict[str, Any], media: list[MediaRef]
+) -> MessageView:
+    base = _base_fields(row)
+    via_bot = raw.get("via_bot")
+    sticker = _sticker(raw)
+    try:
+        return MessageView(
+            **base,
+            entities=_entities(raw),
+            quote=_text_of(raw.get("quote")),
+            reply=_reply(raw),
+            forward=_forward(raw),
+            media=media,
+            reactions=_reactions(raw),
+            inline_buttons=_inline_buttons(raw),
+            web_page=_web_page(raw),
+            poll=_poll(raw),
+            contact=_contact(raw),
+            location=_location(raw),
+            service=_service(raw),
+            via_bot_id=via_bot.get("id") if isinstance(via_bot, dict) else None,
+            sticker=sticker,
+            is_sticker=sticker is not None,
+            is_animated_emoji=False,
+        )
+    except ValidationError:
+        return MessageView(**base, media=media)

backend/src/utils/read/models.py

@@ -16,11 +16,139 @@ class Page(BaseModel):
         return min(self.limit, MAX_LIMIT)
 
 
+class AccountView(BaseModel):
+    account_id: int
+    label: str | None
+    phone: str | None
+    tg_user_id: int | None
+    is_active: bool
+
+
 class ChatListItem(BaseModel):
     chat_id: int
     title: str | None
+    kind: str
+    has_avatar: bool
+    is_bot: bool
+    is_contact: bool
+    is_broadcast: bool
     message_count: int
     last_date: datetime | None
+    last_text: str | None
+    last_sender_id: int | None
+
+
+class EntityView(BaseModel):
+    type: str
+    offset: int
+    length: int
+    url: str | None = None
+    custom_emoji_id: str | None = None
+    language: str | None = None
+
+
+class ReplyView(BaseModel):
+    message_id: int | None = None
+    sender_id: int | None = None
+    sender_name: str | None = None
+    text: str | None = None
+    media_kind: str | None = None
+
+
+class ForwardView(BaseModel):
+    kind: str
+    from_id: int | None = None
+    from_name: str | None = None
+    chat_id: int | None = None
+    chat_title: str | None = None
+    message_id: int | None = None
+    date: datetime | None = None
+    signature: str | None = None
+
+
+class MediaRef(BaseModel):
+    message_id: int
+    id: int | None = None
+    kind: str
+    downloaded: bool = False
+    width: int | None = None
+    height: int | None = None
+    duration: float | None = None
+    mime: str | None = None
+    file_size: int | None = None
+    ttl_seconds: int | None = None
+
+
+class ReactionCount(BaseModel):
+    emoji: str | None = None
+    custom_emoji_id: str | None = None
+    count: int
+    chosen: bool = False
+
+
+class InlineButton(BaseModel):
+    text: str
+    kind: str
+    url: str | None = None
+    data: str | None = None
+
+
+class WebPageView(BaseModel):
+    url: str
+    display_url: str | None = None
+    type: str | None = None
+    site_name: str | None = None
+    title: str | None = None
+    description: str | None = None
+    has_photo: bool = False
+
+
+class PollOption(BaseModel):
+    text: str
+    voter_count: int = 0
+    vote_percentage: int = 0
+    correct: bool | None = None
+
+
+class PollView(BaseModel):
+    question: str
+    options: list[PollOption] = []
+    total_voter_count: int = 0
+    quiz: bool = False
+    closed: bool = False
+    multiple: bool = False
+    anonymous: bool = True
+
+
+class ContactView(BaseModel):
+    user_id: int | None = None
+    first_name: str | None = None
+    last_name: str | None = None
+    phone_number: str | None = None
+
+
+class LocationView(BaseModel):
+    latitude: float | None = None
+    longitude: float | None = None
+    title: str | None = None
+    address: str | None = None
+
+
+class ServiceView(BaseModel):
+    kind: str
+    member_ids: list[int] | None = None
+    pinned_message_id: int | None = None
+    duration: int | None = None
+
+
+class StickerView(BaseModel):
+    emoji: str | None = None
+    set_name: str | None = None
+    width: int | None = None
+    height: int | None = None
+    mime: str | None = None
+    is_animated: bool = False
+    is_video: bool = False
 
 
 class MessageView(BaseModel):
@@ -33,6 +161,23 @@ class MessageView(BaseModel):
     is_self_destruct: bool
     edited_at: datetime | None
     deleted_at: datetime | None
+    entities: list[EntityView] = []
+    quote: str | None = None
+    reply: ReplyView | None = None
+    forward: ForwardView | None = None
+    media_group_id: str | None = None
+    media: list[MediaRef] = []
+    reactions: list[ReactionCount] = []
+    inline_buttons: list[list[InlineButton]] = []
+    web_page: WebPageView | None = None
+    poll: PollView | None = None
+    contact: ContactView | None = None
+    location: LocationView | None = None
+    service: ServiceView | None = None
+    via_bot_id: int | None = None
+    sticker: StickerView | None = None
+    is_sticker: bool = False
+    is_animated_emoji: bool = False
 
 
 class MessageVersionView(BaseModel):
@@ -56,6 +201,22 @@ class MediaView(BaseModel):
     created_at: datetime
 
 
+class MediaVersionView(BaseModel):
+    id: int
+    kind: str
+    storage_key: str
+    file_size: int | None
+    mime: str | None
+    observed_at: datetime
+
+
+class AvatarRef(BaseModel):
+    unique_id: str
+    storage_key: str | None
+    downloaded: bool
+    mime: str | None
+
+
 class CallbackView(BaseModel):
     position: int
     label: str | None
@@ -103,6 +264,7 @@ class PeerView(BaseModel):
     phone: str | None
     photo_unique_id: str | None
     is_deleted_account: bool
+    has_avatar: bool
     updated_at: datetime
 
 

backend/src/utils/read/peers.py

@@ -2,13 +2,19 @@ import asyncpg
 
 from utils.read.models import Page, PeerHistoryView, PeerView, StoryView
 
+_PEER_COLS = (
+    "peer_id, first_name, last_name, username, phone, photo_unique_id, "
+    "is_deleted_account, updated_at, "
+    "EXISTS (SELECT 1 FROM avatars a WHERE a.account_id = peers.account_id "
+    "AND a.owner_id = peers.peer_id) AS has_avatar"
+)
+
 
 async def get_peer(
     pool: asyncpg.Pool, account_id: int, peer_id: int
 ) -> PeerView | None:
     row = await pool.fetchrow(
-        "SELECT peer_id, first_name, last_name, username, phone, "
-        "photo_unique_id, is_deleted_account, updated_at FROM peers "
+        f"SELECT {_PEER_COLS} FROM peers "  # noqa: S608
         "WHERE account_id = $1 AND peer_id = $2",
         account_id,
         peer_id,
@@ -16,6 +22,20 @@ async def get_peer(
     return PeerView(**dict(row)) if row else None
 
 
+async def get_peers(
+    pool: asyncpg.Pool, account_id: int, ids: list[int]
+) -> list[PeerView]:
+    if not ids:
+        return []
+    rows = await pool.fetch(
+        f"SELECT {_PEER_COLS} FROM peers "  # noqa: S608
+        "WHERE account_id = $1 AND peer_id = ANY($2)",
+        account_id,
+        ids,
+    )
+    return [PeerView(**dict(row)) for row in rows]
+
+
 async def get_peer_history(
     pool: asyncpg.Pool, account_id: int, peer_id: int
 ) -> list[PeerHistoryView]: