/**
 * Queries de usuários usando Prisma
 * Migrado de lib/db/queries/users.ts
 */

import type { User } from "@prisma/client";
import { prisma } from "../app";
import { getDefaultSubscriptionTier } from "./subscription-tiers";

export interface CreateUserData {
  username: string;
  email: string;
  password_hash: string;
  first_name: string;
  last_name: string;
  phone?: string;
  cpf?: string;
}

export interface UpdateUserData {
  first_name?: string;
  last_name?: string;
  phone?: string;
  whatsapp_notifications?: boolean;
  subscription_tier_id?: number | null;
}

/**
 * Cria um novo usuário
 */
export async function createUser(
  data: CreateUserData,
): Promise<{ userId: number; username: string; email: string }> {
  const defaultTier = await getDefaultSubscriptionTier();
  const user = await prisma.user.create({
    data: {
      username: data.username,
      email: data.email,
      password_hash: data.password_hash,
      first_name: data.first_name,
      last_name: data.last_name,
      phone: data.phone || null,
      cpf: data.cpf || null,
      subscription_tier_id: defaultTier?.subscription_tier_id ?? undefined,
    },
    select: {
      user_id: true,
      username: true,
      email: true,
    },
  });

  return {
    userId: user.user_id,
    username: user.username,
    email: user.email,
  };
}

/**
 * Busca usuário por email (inclui password_hash para login)
 */
type UserWithTier = User & {
  subscription_tier?: {
    subscription_tier_id: number;
    name: string;
    slug: string;
    level: number;
  } | null;
};

export async function getUserByEmail(
  email: string,
): Promise<UserWithTier | null> {
  return (await prisma.user.findUnique({
    where: { email },
    include: {
      subscription_tier: {
        select: {
          subscription_tier_id: true,
          name: true,
          slug: true,
          level: true,
        },
      },
    },
  })) as UserWithTier | null;
}

/**
 * Busca usuário por username
 */
export async function getUserByUsername(
  username: string,
): Promise<UserWithTier | null> {
  return (await prisma.user.findUnique({
    where: { username },
    include: {
      subscription_tier: {
        select: {
          subscription_tier_id: true,
          name: true,
          slug: true,
          level: true,
        },
      },
    },
  })) as UserWithTier | null;
}

/**
 * Busca usuário por ID (sem password_hash)
 */
type PublicUser = {
  user_id: number;
  username: string;
  email: string;
  first_name: string;
  last_name: string;
  phone: string | null;
  cpf: string | null;
  account_level: string;
  has_donated: boolean;
  whatsapp_notifications: boolean;
  created_at: Date;
  updated_at: Date;
  last_login: Date | null;
  is_active: boolean;
  is_verified: boolean;
  subscription_tier?: {
    subscription_tier_id: number;
    name: string;
    slug: string;
    level: number;
  } | null;
};

export async function getUserById(userId: number): Promise<PublicUser | null> {
  return (await prisma.user.findUnique({
    where: { user_id: userId },
    select: {
      user_id: true,
      username: true,
      email: true,
      first_name: true,
      last_name: true,
      phone: true,
      cpf: true,
      account_level: true,
      has_donated: true,
      whatsapp_notifications: true,
      created_at: true,
      updated_at: true,
      last_login: true,
      is_active: true,
      is_verified: true,
      subscription_tier: {
        select: {
          subscription_tier_id: true,
          name: true,
          slug: true,
          level: true,
        },
      },
    },
  })) as PublicUser | null;
}

/**
 * Busca usuário por CPF (verifica duplicidade)
 */
export async function getUserByCpf(
  cpf: string,
): Promise<Pick<User, "user_id" | "username" | "email"> | null> {
  return (await prisma.user.findUnique({
    where: { cpf },
    select: {
      user_id: true,
      username: true,
      email: true,
    },
  })) as Pick<User, "user_id" | "username" | "email"> | null;
}

/**
 * Atualiza dados do usuário
 */
export async function updateUser(
  userId: number,
  data: UpdateUserData,
): Promise<PublicUser> {
  const updateData: any = {};
  if (data.first_name !== undefined) updateData.first_name = data.first_name;
  if (data.last_name !== undefined) updateData.last_name = data.last_name;
  if (data.phone !== undefined) updateData.phone = data.phone || null;
  if (data.whatsapp_notifications !== undefined)
    updateData.whatsapp_notifications = data.whatsapp_notifications;
  if (data.subscription_tier_id !== undefined) {
    if (data.subscription_tier_id === null) {
      updateData.subscription_tier = { disconnect: true };
    } else {
      updateData.subscription_tier = {
        connect: { subscription_tier_id: data.subscription_tier_id },
      };
    }
  }

  const user = await prisma.user.update({
    where: { user_id: userId },
    data: updateData,
    select: {
      user_id: true,
      username: true,
      email: true,
      first_name: true,
      last_name: true,
      phone: true,
      cpf: true,
      account_level: true,
      has_donated: true,
      whatsapp_notifications: true,
      created_at: true,
      updated_at: true,
      last_login: true,
      is_active: true,
      is_verified: true,
      subscription_tier: {
        select: {
          subscription_tier_id: true,
          name: true,
          slug: true,
          level: true,
        },
      },
    },
  });

  return user as PublicUser;
}

/**
 * Atualiza timestamp de último login
 */
export async function updateLastLogin(userId: number): Promise<void> {
  await prisma.user.update({
    where: { user_id: userId },
    data: { last_login: new Date() },
  });
}