import { Controller, Get, Inject, Injectable, Module, Query, Req, Res } from '@nestjs/common';
import { ApiOperation, ApiTags } from '@nestjs/swagger';
import type { FastifyReply, FastifyRequest } from 'fastify';
import { resolveTenantRoute } from '../features/tenant/routes.js';
import { DomainRouteService } from './domain-route.service.js';
import { TenantResolveQueryDto } from './dto.js';
import { RequestContextFactory } from './request-context.factory.js';
import { ApiEnvelopeProperties } from './api-doc.decorators.js';

const TENANT_HANDLERS = Symbol('TENANT_HANDLERS');
const tenantHandlers = { resolve: resolveTenantRoute };

@Injectable()
class TenantService extends DomainRouteService {
  constructor(factory: RequestContextFactory, @Inject(TENANT_HANDLERS) injectedHandlers: typeof tenantHandlers) {
    super(factory, injectedHandlers);
  }
}

@ApiTags('租户解析')
@Controller('/api/tenant')
class TenantController {
  constructor(private readonly service: TenantService) {}

  @Get('resolve')
  @ApiOperation({ summary: '解析当前租户', description: '根据访问域名、host 参数或 tenantCode 解析启用中的租户及公开品牌配置。' })
  @ApiEnvelopeProperties({
    tenant: { type: 'object', description: '租户基本信息', properties: { id: { type: 'string', format: 'uuid' }, slug: { type: 'string' }, name: { type: 'string' }, mode: { type: 'string' } } },
    branding: { type: 'object', description: '公开品牌与主题配置', additionalProperties: true },
    features: { type: 'object', description: '学生端功能开关', additionalProperties: true },
    adminFeatures: { type: 'object', description: '管理端功能开关', additionalProperties: true },
    publicConfig: { type: 'object', description: '允许公开给客户端的租户配置', additionalProperties: true },
  })
  resolve(@Query() _query: TenantResolveQueryDto, @Req() req: FastifyRequest, @Res({ passthrough: true }) res: FastifyReply) {
    return this.service.execute('resolve', req, res);
  }
}

@Module({ controllers: [TenantController], providers: [TenantService, { provide: TENANT_HANDLERS, useValue: tenantHandlers }] })
export class TenantModule {}