"""Notification target management API routes."""

from fastapi import APIRouter, Depends, HTTPException, status
from pydantic import BaseModel
from sqlmodel import select
from sqlmodel.ext.asyncio.session import AsyncSession
from typing import Any

from ..auth.dependencies import get_current_user
from ..database.engine import get_session
from ..database.models import NotificationTarget, User

router = APIRouter(prefix="/api/targets", tags=["targets"])


class TargetCreate(BaseModel):
    type: str  # "telegram" or "webhook"
    name: str
    icon: str = ""
    config: dict[str, Any] = {}
    template_config_id: int | None = None


class TargetUpdate(BaseModel):
    name: str | None = None
    icon: str | None = None
    config: dict[str, Any] | None = None
    template_config_id: int | None = None


@router.get("")
async def list_targets(
    user: User = Depends(get_current_user),
    session: AsyncSession = Depends(get_session),
):
    """List all notification targets for the current user."""
    result = await session.exec(
        select(NotificationTarget).where(NotificationTarget.user_id == user.id)
    )
    return [
        {
            "id": t.id,
            "type": t.type,
            "name": t.name,
            "icon": t.icon,
            "config": _safe_config(t),
            "template_config_id": t.template_config_id,
            "created_at": t.created_at.isoformat(),
        }
        for t in result.all()
    ]


@router.post("", status_code=status.HTTP_201_CREATED)
async def create_target(
    body: TargetCreate,
    user: User = Depends(get_current_user),
    session: AsyncSession = Depends(get_session),
):
    """Create a new notification target."""
    if body.type not in ("telegram", "webhook"):
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail="Type must be 'telegram' or 'webhook'",
        )
    target = NotificationTarget(
        user_id=user.id,
        type=body.type,
        name=body.name,
        icon=body.icon,
        config=body.config,
        template_config_id=body.template_config_id,
    )
    session.add(target)
    await session.commit()
    await session.refresh(target)
    return {"id": target.id, "type": target.type, "name": target.name}


@router.get("/{target_id}")
async def get_target(
    target_id: int,
    user: User = Depends(get_current_user),
    session: AsyncSession = Depends(get_session),
):
    """Get a specific notification target."""
    target = await _get_user_target(session, target_id, user.id)
    return {
        "id": target.id,
        "type": target.type,
        "name": target.name,
        "icon": target.icon,
        "config": _safe_config(target),
        "template_config_id": target.template_config_id,
    }


@router.put("/{target_id}")
async def update_target(
    target_id: int,
    body: TargetUpdate,
    user: User = Depends(get_current_user),
    session: AsyncSession = Depends(get_session),
):
    """Update a notification target."""
    target = await _get_user_target(session, target_id, user.id)
    if body.name is not None:
        target.name = body.name
    if body.icon is not None:
        target.icon = body.icon
    if body.config is not None:
        target.config = body.config
    if body.template_config_id is not None:
        target.template_config_id = body.template_config_id
    session.add(target)
    await session.commit()
    await session.refresh(target)
    return {"id": target.id, "type": target.type, "name": target.name}


@router.delete("/{target_id}", status_code=status.HTTP_204_NO_CONTENT)
async def delete_target(
    target_id: int,
    user: User = Depends(get_current_user),
    session: AsyncSession = Depends(get_session),
):
    """Delete a notification target."""
    target = await _get_user_target(session, target_id, user.id)
    await session.delete(target)
    await session.commit()


@router.post("/{target_id}/test")
async def test_target(
    target_id: int,
    user: User = Depends(get_current_user),
    session: AsyncSession = Depends(get_session),
):
    """Send a test notification to a target."""
    target = await _get_user_target(session, target_id, user.id)
    from ..services.notifier import send_test_notification
    result = await send_test_notification(target)
    return result


def _safe_config(target: NotificationTarget) -> dict:
    """Return config with sensitive fields masked."""
    config = dict(target.config)
    if "bot_token" in config:
        token = config["bot_token"]
        config["bot_token"] = f"{token[:8]}...{token[-4:]}" if len(token) > 12 else "***"
    if "api_key" in config:
        config["api_key"] = "***"
    return config


async def _get_user_target(
    session: AsyncSession, target_id: int, user_id: int
) -> NotificationTarget:
    target = await session.get(NotificationTarget, target_id)
    if not target or target.user_id != user_id:
        raise HTTPException(status_code=404, detail="Target not found")
    return target