"""
Notification settings and history API endpoints.
"""
from typing import List

from fastapi import APIRouter, Depends, HTTPException, Query
from sqlalchemy.orm import Session

from app.core.database import get_db
from app.api.deps import CurrentUser
from app.models.notification import NotificationSetting, NotificationHistory
from app.schemas.notification import (
    NotificationSettingCreate,
    NotificationSettingUpdate,
    NotificationSettingResponse,
    NotificationHistoryResponse,
)

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


@router.get("/settings", response_model=List[NotificationSettingResponse])
async def get_notification_settings(
    current_user: CurrentUser,
    db: Session = Depends(get_db),
):
    """Get all notification settings for the current user."""
    settings = (
        db.query(NotificationSetting)
        .filter(NotificationSetting.user_id == current_user.id)
        .all()
    )
    return settings


@router.post("/settings", response_model=NotificationSettingResponse, status_code=201)
async def create_notification_setting(
    data: NotificationSettingCreate,
    current_user: CurrentUser,
    db: Session = Depends(get_db),
):
    """Create a new notification setting."""
    existing = (
        db.query(NotificationSetting)
        .filter(
            NotificationSetting.user_id == current_user.id,
            NotificationSetting.channel_type == data.channel_type,
        )
        .first()
    )
    if existing:
        raise HTTPException(
            status_code=400,
            detail=f"Setting for {data.channel_type.value} already exists. Use PUT to update.",
        )

    setting = NotificationSetting(
        user_id=current_user.id,
        channel_type=data.channel_type,
        webhook_url=data.webhook_url,
        enabled=data.enabled,
    )
    db.add(setting)
    db.commit()
    db.refresh(setting)
    return setting


@router.put("/settings/{setting_id}", response_model=NotificationSettingResponse)
async def update_notification_setting(
    setting_id: int,
    data: NotificationSettingUpdate,
    current_user: CurrentUser,
    db: Session = Depends(get_db),
):
    """Update an existing notification setting."""
    setting = (
        db.query(NotificationSetting)
        .filter(
            NotificationSetting.id == setting_id,
            NotificationSetting.user_id == current_user.id,
        )
        .first()
    )
    if not setting:
        raise HTTPException(status_code=404, detail="Notification setting not found")

    if data.webhook_url is not None:
        setting.webhook_url = data.webhook_url
    if data.enabled is not None:
        setting.enabled = data.enabled

    db.commit()
    db.refresh(setting)
    return setting


@router.get("/history", response_model=List[NotificationHistoryResponse])
async def get_notification_history(
    current_user: CurrentUser,
    db: Session = Depends(get_db),
    limit: int = Query(50, ge=1, le=200),
):
    """Get notification history."""
    history = (
        db.query(NotificationHistory)
        .order_by(NotificationHistory.sent_at.desc())
        .limit(limit)
        .all()
    )
    return history