import {
  BadRequestException,
  Body,
  Controller,
  Delete,
  Get,
  Patch,
  Post,
  StreamableFile,
  UploadedFile,
  UseGuards,
  UseInterceptors,
} from '@nestjs/common';
import { FileInterceptor } from '@nestjs/platform-express';
import { memoryStorage } from 'multer';
import { AuthService } from './auth.service';
import {
  LoginDto,
  LoginOtpRequestDto,
  LoginOtpVerifyDto,
  RegisterOrganizationDto,
  RegisterVerifyOtpDto,
  SelectOrganizationDto,
  SwitchOrganizationDto,
  UpdateProfileDto,
} from './dto';
import { JwtAuthGuard } from './jwt-auth.guard';
import { CurrentUser } from './current-user.decorator';
import type { Actor } from '../common/record-scope';

@Controller('auth')
export class AuthController {
  constructor(private readonly authService: AuthService) {}

  @Post('register')
  register(@Body() dto: RegisterOrganizationDto) {
    return this.authService.startRegister(dto);
  }

  @Post('register/verify')
  registerVerify(@Body() dto: RegisterVerifyOtpDto) {
    return this.authService.verifyRegister(dto);
  }

  /** ورود با رمز (بدون OTP) */
  @Post('login')
  login(@Body() dto: LoginDto) {
    return this.authService.loginWithPassword(dto);
  }

  /** درخواست کد ورود با موبایل */
  @Post('login/otp')
  loginOtpRequest(@Body() dto: LoginOtpRequestDto) {
    return this.authService.requestLoginOtp(dto);
  }

  /** تأیید کد ورود با موبایل */
  @Post('login/otp/verify')
  loginOtpVerify(@Body() dto: LoginOtpVerifyDto) {
    return this.authService.verifyLoginOtp(dto);
  }

  @Post('select-organization')
  selectOrganization(@Body() dto: SelectOrganizationDto) {
    return this.authService.selectOrganization(dto.selectionToken, dto.organizationId);
  }

  @UseGuards(JwtAuthGuard)
  @Post('switch-organization')
  switchOrganization(
    @CurrentUser() user: Actor,
    @Body() dto: SwitchOrganizationDto,
  ) {
    return this.authService.switchOrganization(user.userId, dto.organizationId);
  }

  @UseGuards(JwtAuthGuard)
  @Get('organizations')
  listOrganizations(@CurrentUser() user: Actor) {
    return this.authService.listMyOrganizations(user.userId);
  }

  @UseGuards(JwtAuthGuard)
  @Post('logout')
  logout(@CurrentUser() user: Actor) {
    return this.authService.logout(user);
  }

  @UseGuards(JwtAuthGuard)
  @Get('me')
  me(@CurrentUser() user: Actor) {
    return this.authService.me(user.userId, user.organizationId, user);
  }

  @UseGuards(JwtAuthGuard)
  @Post('view-as')
  viewAs(
    @CurrentUser() user: Actor,
    @Body() body: { targetUserId?: string },
  ) {
    if (!body.targetUserId?.trim()) {
      throw new BadRequestException('کاربر هدف مشخص نیست.');
    }
    return this.authService.viewAs(user, body.targetUserId.trim());
  }

  @UseGuards(JwtAuthGuard)
  @Patch('me')
  updateMe(@CurrentUser() user: Actor, @Body() dto: UpdateProfileDto) {
    return this.authService.updateMe(user.userId, user.organizationId, dto);
  }

  @UseGuards(JwtAuthGuard)
  @Patch('me/prior-archive')
  setPriorLens(
    @CurrentUser() user: Actor,
    @Body() body: { lens?: string },
  ) {
    if (body.lens !== 'archive' && body.lens !== 'current') {
      throw new BadRequestException('حالت بایگانی نامعتبر است');
    }
    return this.authService.setPriorLens(
      user.userId,
      user.organizationId,
      body.lens,
      user,
    );
  }

  /** عکس پروفایل کاربر جاری */
  @UseGuards(JwtAuthGuard)
  @Get('me/avatar')
  async avatar(@CurrentUser() user: Actor) {
    const file = await this.authService.openAvatar(user.userId);
    return new StreamableFile(file.stream, { type: file.mimeType });
  }

  @UseGuards(JwtAuthGuard)
  @Post('me/avatar')
  @UseInterceptors(
    FileInterceptor('file', {
      storage: memoryStorage(),
      limits: { fileSize: 2 * 1024 * 1024 },
    }),
  )
  uploadAvatar(
    @CurrentUser() user: Actor,
    @UploadedFile() file: Express.Multer.File,
  ) {
    return this.authService.saveAvatar(user.userId, user.organizationId, file);
  }

  @UseGuards(JwtAuthGuard)
  @Delete('me/avatar')
  removeAvatar(@CurrentUser() user: Actor) {
    return this.authService.removeAvatar(user.userId, user.organizationId);
  }
}