from fastapi import APIRouter, Depends
from lover.deps import get_current_user, AuthedUser
from lover.response import success_response
from lover.db import get_db
from sqlalchemy.orm import Session
from sqlalchemy import and_, or_
from lover.models import FriendRelation, User

router = APIRouter()

@router.get("/api/friend/index")
@router.post("/api/friend/index")
def get_friend_index(user: AuthedUser = Depends(get_current_user), db: Session = Depends(get_db)):
    """获取好友列表"""
    # 查询当前用户的好友关系（双向：user_id 或 friend_id 为当前用户，且 status=1 表示已通过）
    friend_relations = db.query(FriendRelation).filter(
        and_(
            or_(
                FriendRelation.user_id == user.id,
                FriendRelation.friend_id == user.id
            ),
            FriendRelation.status == "1"
        )
    ).all()

    friend_ids = []
    result = []
    for rel in friend_relations:
        # 确定好友的 user_id（不是自己）
        fid = rel.friend_id if rel.user_id == user.id else rel.user_id
        friend_ids.append(fid)

    # 查询好友用户信息
    friend_users = db.query(User).filter(User.id.in_(friend_ids)).all() if friend_ids else []
    user_map = {u.id: u for u in friend_users}

    for rel in friend_relations:
        fid = rel.friend_id if rel.user_id == user.id else rel.user_id
        friend_user = user_map.get(fid)
        if not friend_user:
            continue
        result.append({
            "friend_id": fid,
            "friend": {
                "id": friend_user.id,
                "nickname": friend_user.nickname,
                "avatar": friend_user.avatar,
                "user_number": str(friend_user.id),  # 前端期望 user_number
                "open_id": "",  # 小程序 open_id，如有需要可补充字段
            },
            "intimacy": rel.intimacy or 0,
            "intimacy_level": rel.intimacy_level or 0,
            "is_online": False,  # 默认离线，前端会单独调用在线状态接口
        })

    return success_response({
        "data": result,
        "total": len(result)
    })

@router.post("/api/friend/add")
def add_friend(user: AuthedUser = Depends(get_current_user)):
    """添加好友"""
    return success_response({"message": "添加成功"})

@router.delete("/api/friend/delete")
def delete_friend(user: AuthedUser = Depends(get_current_user)):
    """删除好友"""
    return success_response({"message": "删除成功"})