"""Minimal end-to-end example: one turn against a real `claude` CLI.

Prerequisites:
  1. `claude` is on PATH and the user is logged in (`claude /login` once).
  2. Your subscription is healthy (no rate limit, no auth block).

Run:
  python examples/basic_usage.py
"""

from __future__ import annotations

import asyncio
import os
from pathlib import Path

from claude_code_api import (
    AssistantMessage,
    BackendOptions,
    ClaudeCodeBackend,
    ResultMessage,
    TextBlock,
)

CWD = Path(os.environ.get("CLAUDE_CODE_CWD", Path.cwd())).resolve()


async def main() -> None:
    opts = BackendOptions(cwd=str(CWD), dangerously_skip_permissions=True)
    async with ClaudeCodeBackend(opts) as backend:
        async for event in backend.complete(
            [{"role": "user", "content": "Reply with the single word: OK"}]
        ):
            if isinstance(event, AssistantMessage):
                for block in event.content:
                    if isinstance(block, TextBlock):
                        print(f"[assistant] {block.text.strip()}")
            elif isinstance(event, ResultMessage):
                print(
                    f"[result]    stop_reason={event.stop_reason} "
                    f"duration_ms={event.duration_ms}"
                )


if __name__ == "__main__":
    asyncio.run(main())