feat: add jobs queue

backend/src/utils/db/models.py

@@ -1,4 +1,5 @@
 from datetime import datetime
+from enum import StrEnum
 from typing import Any
 
 from sqlalchemy import BigInteger, Column, DateTime, LargeBinary, func
@@ -6,6 +7,13 @@ from sqlalchemy.dialects.postgresql import JSONB
 from sqlmodel import Field, SQLModel
 
 
+class JobStatus(StrEnum):
+    PENDING = "pending"
+    RUNNING = "running"
+    DONE = "done"
+    FAILED = "failed"
+
+
 class Account(SQLModel, table=True):
     __tablename__ = "accounts"
 
@@ -158,6 +166,44 @@ class Reaction(SQLModel, table=True):
     )
 
 
+class Job(SQLModel, table=True):
+    __tablename__ = "jobs"
+
+    id: int | None = Field(default=None, sa_column=Column(BigInteger, primary_key=True))
+    account_id: int
+    kind: str
+    status: str = JobStatus.PENDING
+    params: dict[str, Any] = Field(
+        default_factory=dict, sa_column=Column(JSONB, nullable=False)
+    )
+    cursor: dict[str, Any] | None = Field(default=None, sa_column=Column(JSONB))
+    progress: dict[str, Any] = Field(
+        default_factory=dict, sa_column=Column(JSONB, nullable=False)
+    )
+    flood_waits: int = 0
+    attempts: int = 0
+    error: str | None = None
+    created_at: datetime = Field(
+        sa_column=Column(
+            DateTime(timezone=True), nullable=False, server_default=func.now()
+        )
+    )
+    updated_at: datetime = Field(
+        sa_column=Column(
+            DateTime(timezone=True),
+            nullable=False,
+            server_default=func.now(),
+            onupdate=func.now(),
+        )
+    )
+    started_at: datetime | None = Field(
+        default=None, sa_column=Column(DateTime(timezone=True))
+    )
+    finished_at: datetime | None = Field(
+        default=None, sa_column=Column(DateTime(timezone=True))
+    )
+
+
 class CapturePolicy(SQLModel, table=True):
     __tablename__ = "capture_policy"