from app.api.chat_service import get_user_balance
from fastapi import APIRouter, Depends, HTTPException, Query
from sqlalchemy.orm import Session
from sqlalchemy import and_, desc, asc
from pydantic import BaseModel, Field
from typing import Optional
import uuid
from datetime import datetime, date

from ..database import get_db
from ..models import (
    User, LoginLog, ApiKey, MembershipSubscription, AppPurchase, MarketApp,
    SmsConfig, gen_uuid
)
from ..auth import get_current_user, hash_password, verify_password
from ..middleware.log_service import LogService
from ..sms_client import send_sms_text

router = APIRouter()


class UpdateProfileRequest(BaseModel):
    username: Optional[str] = None
    email: Optional[str] = None
    phone: Optional[str] = None
    avatar: Optional[str] = None


class UpdatePasswordRequest(BaseModel):
    old_password: str
    new_password: str = Field(min_length=6, max_length=100)


class CreateApiKeyRequest(BaseModel):
    name: str = Field(min_length=1, max_length=100)


class UpdateApiKeyRequest(BaseModel):
    status: str  # enabled, disabled, revoked



@router.get("/balance")
async def get_balance(user=Depends(get_current_user)):
    balance = await get_user_balance(user["id"])
    return {"code": 0, "data": balance, "message": "ok"}

@router.get("/")
def get_profile(
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user),
):
    # 获取会员信息
    membership = db.query(MembershipSubscription).filter(
        MembershipSubscription.user_id == current_user.id
    ).first()

    membership_info = None
    if membership:
        membership_info = {
            "id": membership.id,
            "plan_id": membership.plan_id,
            "status": membership.status,
            "start_at": str(membership.start_at) if membership.start_at else None,
            "expire_at": str(membership.end_at) if membership.end_at else None,
            "is_expired": membership.end_at < datetime.now() if membership.end_at else False,
        }

    return {
        "code": 0,
        "data": {
            "id": current_user.id,
            "username": current_user.username,
            "email": current_user.email,
            "phone": current_user.phone,
            "avatar": current_user.avatar,
            "role": current_user.role,
            "status": current_user.status,
            "membership": membership_info,
            "created_at": str(current_user.created_at) if current_user.created_at else None,
            "updated_at": str(current_user.updated_at) if current_user.updated_at else None,
        },
        "message": "ok",
    }


@router.put("/")
def update_profile(
    req: UpdateProfileRequest,
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user),
):
    # 从当前会话中重新获取用户对象
    db_user = db.query(User).filter(User.id == current_user.id).first()
    if not db_user:
        raise HTTPException(status_code=404, detail="用户不存在")

    if req.username is not None and req.username != db_user.username:
        # 检查用户名是否被占用
        existing = db.query(User).filter(User.username == req.username).first()
        if existing:
            raise HTTPException(status_code=400, detail="用户名已被占用")
        db_user.username = req.username

    if req.email is not None and req.email != db_user.email:
        existing = db.query(User).filter(User.email == req.email).first()
        if existing:
            raise HTTPException(status_code=400, detail="邮箱已被占用")
        db_user.email = req.email

    if req.phone is not None:
        db_user.phone = req.phone
    if req.avatar is not None:
        db_user.avatar = req.avatar

    db_user.updated_at = datetime.now()

    LogService.log_operation(
        user_id=db_user.id, username=db_user.username, action="update_profile",
        target="user", target_id=db_user.id,
        detail=f"用户 {db_user.username} 更新了个人信息",
    )

    db.commit()
    db.refresh(db_user)

    return {
        "code": 0,
        "data": {
            "id": db_user.id,
            "username": db_user.username,
            "email": db_user.email,
            "phone": db_user.phone,
            "avatar": db_user.avatar,
        },
        "message": "更新成功",
    }


@router.put("/password")
def update_password(
    req: UpdatePasswordRequest,
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user),
):
    db_user = db.query(User).filter(User.id == current_user.id).first()
    if not db_user:
        raise HTTPException(status_code=404, detail="用户不存在")

    if not verify_password(req.old_password, db_user.password_hash):
        raise HTTPException(status_code=400, detail="原密码错误")

    db_user.password_hash = hash_password(req.new_password)
    db_user.updated_at = datetime.now()

    # 密码修改成功后发送短信通知（若已配置短信且用户绑定手机号）
    try:
        sms_cfg = db.query(SmsConfig).first()
        if sms_cfg and sms_cfg.provider and db_user.phone:
            send_sms_text(sms_cfg, db_user.phone, "您的登录密码已修改，如非本人操作请尽快联系客服。")
    except Exception as sms_err:
        import logging
        logging.getLogger("aiflow").warning(f"密码修改短信通知失败(不影响修改结果): {sms_err}")

    LogService.log_operation(
        user_id=db_user.id, username=db_user.username, action="change_password",
        target="user", target_id=db_user.id,
        detail=f"用户 {db_user.username} 修改了密码",
    )

    db.commit()

    return {"code": 0, "message": "密码修改成功"}


@router.get("/login-logs")
def get_login_logs(
    page: int = Query(default=1, ge=1),
    page_size: int = Query(default=20, ge=1, le=100),
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user),
):
    query = db.query(LoginLog).filter(LoginLog.user_id == current_user.id)
    total = query.count()

    logs = (
        query.order_by(desc(LoginLog.login_at))
        .offset((page - 1) * page_size)
        .limit(page_size)
        .all()
    )

    result = []
    for log_item in logs:
        result.append({
            "id": log_item.id,
            "ip": log_item.ip,
            "user_agent": log_item.user_agent,
            "login_at": str(log_item.login_at) if log_item.login_at else None,
        })

    return {
        "code": 0,
        "data": {"total": total, "page": page, "page_size": page_size, "items": result},
        "message": "ok",
    }


@router.get("/api-keys")
def get_api_keys(
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user),
):
    keys = (
        db.query(ApiKey)
        .filter(ApiKey.user_id == current_user.id)
        .order_by(desc(ApiKey.created_at))
        .all()
    )

    result = []
    for k in keys:
        preview = None
        if k.api_key and len(k.api_key) > 12:
            preview = k.api_key[:8] + "****" + k.api_key[-4:]
        result.append({
            "id": k.id,
            "name": k.name,
            "key_preview": preview or "****",
            "status": k.status,
            "last_used_at": str(k.last_used_at) if k.last_used_at else None,
            "created_at": str(k.created_at) if k.created_at else None,
            "expire_at": str(k.expired_at) if k.expired_at else None,
        })

    return {"code": 0, "data": result, "message": "ok"}


@router.post("/api-keys")
def create_api_key(
    req: CreateApiKeyRequest,
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user),
):
    # 生成API密钥
    key_value = f"sk-{gen_uuid().replace('-', '')}"

    api_key = ApiKey(
        id=gen_uuid(),
        user_id=current_user.id,
        name=req.name,
        api_key=key_value,
        secret=f"sec-{gen_uuid().replace('-', '')}",
        status="active",
        created_at=datetime.now(),
    )
    db.add(api_key)

    LogService.log_operation(
        user_id=current_user.id, username=current_user.username, action="create_api_key",
        target="api_key", target_id=api_key.id,
        detail=f"用户 {current_user.username} 创建了API密钥 {api_key.name}",
    )

    db.commit()
    db.refresh(api_key)

    return {
        "code": 0,
        "data": {
            "id": api_key.id,
            "name": api_key.name,
            "api_key": key_value,  # 仅创建时返回完整key
            "status": api_key.status,
            "created_at": str(api_key.created_at),
        },
        "message": "API密钥创建成功，请妥善保管",
    }


@router.put("/api-keys/{key_id}")
def update_api_key(
    key_id: str,
    req: UpdateApiKeyRequest,
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user),
):
    api_key = db.query(ApiKey).filter(
        and_(ApiKey.id == key_id, ApiKey.user_id == current_user.id)
    ).first()
    if not api_key:
        raise HTTPException(status_code=404, detail="API密钥不存在")

    if req.status not in ("enabled", "disabled", "revoked"):
        raise HTTPException(status_code=400, detail="无效的状态值")

    api_key.status = req.status

    LogService.log_operation(
        user_id=current_user.id, username=current_user.username, action="update_api_key",
        target="api_key", target_id=api_key.id,
        detail=f"用户 {current_user.username} 更新了API密钥 {api_key.name} 状态为 {req.status}",
    )

    db.commit()

    return {"code": 0, "data": {"id": api_key.id, "status": api_key.status}, "message": "更新成功"}


@router.get("/membership")
def get_membership(
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user),
):
    membership = db.query(MembershipSubscription).filter(
        MembershipSubscription.user_id == current_user.id
    ).first()

    if not membership:
        return {
            "code": 0,
            "data": {"has_membership": False, "status": None},
            "message": "ok",
        }

    is_expired = membership.end_at < datetime.now() if membership.end_at else False

    return {
        "code": 0,
        "data": {
            "has_membership": True,
            "id": membership.id,
            "plan_id": membership.plan_id,
            "status": "expired" if is_expired else membership.status,
            "start_at": str(membership.start_at) if membership.start_at else None,
            "expire_at": str(membership.end_at) if membership.end_at else None,
            "is_expired": is_expired,
        },
        "message": "ok",
    }


@router.get("/purchased-apps")
def get_purchased_apps(
    db: Session = Depends(get_db),
    current_user: User = Depends(get_current_user),
):
    purchases = (
        db.query(AppPurchase)
        .filter(AppPurchase.user_id == current_user.id)
        .order_by(desc(AppPurchase.created_at))
        .all()
    )

    result = []
    for p in purchases:
        app = db.query(MarketApp).filter(MarketApp.id == p.app_id).first()
        result.append({
            "id": p.id,
            "app_id": p.app_id,
            "app_name": app.name if app else "unknown",
            "app_icon": app.icon if app else None,
            "app_type": app.type if app else None,
            "price": float(p.price if p.price and app else 0),
            "purchased_at": str(p.created_at) if p.created_at else None,
        })

    return {"code": 0, "data": result, "message": "ok"}