from __future__ import annotations

import os
from typing import Any

import httpx


class TodoistClient:
    def __init__(self, api_key: str | None = None, base_url: str | None = None):
        self.api_key = api_key or os.getenv("TODOIST_API_KEY")
        self.base_url = (base_url or os.getenv("TODOIST_API_BASE_URL") or "https://api.todoist.com/rest/v2").rstrip("/")
        self.project_id = os.getenv("TODOIST_PROJECT_ID")

    @property
    def enabled(self) -> bool:
        return bool(self.api_key)

    def _headers(self) -> dict[str, str]:
        if not self.api_key:
            raise RuntimeError("TODOIST_API_KEY is not configured")
        return {"Authorization": f"Bearer {self.api_key}", "Content-Type": "application/json"}

    async def create_task(self, *, content: str, description: str, due_string: str | None = None) -> dict[str, Any]:
        payload: dict[str, Any] = {"content": content, "description": description}
        if self.project_id:
            payload["project_id"] = self.project_id
        if due_string:
            payload["due_string"] = due_string
        async with httpx.AsyncClient(timeout=30) as client:
            response = await client.post(f"{self.base_url}/tasks", headers=self._headers(), json=payload)
            response.raise_for_status()
            return response.json()

    async def update_task(self, task_id: str, *, content: str, description: str, due_string: str | None = None) -> None:
        payload: dict[str, Any] = {"content": content, "description": description}
        if due_string:
            payload["due_string"] = due_string
        async with httpx.AsyncClient(timeout=30) as client:
            response = await client.post(f"{self.base_url}/tasks/{task_id}", headers=self._headers(), json=payload)
            response.raise_for_status()

    async def add_comment(self, task_id: str, content: str) -> dict[str, Any]:
        payload = {"task_id": task_id, "content": content}
        async with httpx.AsyncClient(timeout=30) as client:
            response = await client.post(f"{self.base_url}/comments", headers=self._headers(), json=payload)
            response.raise_for_status()
            return response.json()