import { Injectable } from '@nestjs/common';
import { UserStatus, Prisma } from '@prisma/client';
import { PrismaService } from '../prisma/prisma.service';

type UserWithProfile = Prisma.UserGetPayload<{
  include: { userProfile: true };
}>;

@Injectable()
export class UsersService {
  constructor(private readonly prisma: PrismaService) {}

  async findAll(page = 1, limit = 10) {
    const skip = (page - 1) * limit;

    const [users, total] = await Promise.all([
      this.prisma.user.findMany({
        skip,
        take: limit,
        orderBy: { createdAt: 'desc' },
        include: {
          userProfile: true,
        },
      }) as Promise<UserWithProfile[]>,
      this.prisma.user.count(),
    ]);

    return {
      users: users.map((user) => ({
        id: user.id,
        email: user.email,
        role: user.role,
        status: user.status,
        emailVerified: user.emailVerified,
        authProvider: user.authProvider,
        createdAt: user.createdAt,
        lastLoginAt: user.lastLoginAt,
        profile: user.userProfile
          ? {
              firstName: user.userProfile.firstName,
              lastName: user.userProfile.lastName,
              avatar: user.userProfile.avatar,
              phone: user.userProfile.phone,
              city: user.userProfile.city,
              state: user.userProfile.state,
              country: user.userProfile.country,
            }
          : null,
      })),
      total,
      page,
      limit,
      totalPages: Math.ceil(total / limit),
    };
  }

  async findOne(id: string) {
    const user = (await this.prisma.user.findUnique({
      where: { id },
      include: {
        userProfile: true,
      },
    })) as UserWithProfile | null;

    if (!user) {
      return null;
    }

    return {
      id: user.id,
      email: user.email,
      role: user.role,
      status: user.status,
      emailVerified: user.emailVerified,
      authProvider: user.authProvider,
      createdAt: user.createdAt,
      lastLoginAt: user.lastLoginAt,
      profile: user.userProfile,
    };
  }

  async updateStatus(id: string, status: UserStatus) {
    return this.prisma.user.update({
      where: { id },
      data: { status },
    });
  }
}