import { Body, Controller, Get, Headers, HttpCode, Param, Patch, Post, Query, Req } from '@nestjs/common';
import type { AuthenticatedRequest } from '../auth/auth.types.js';
import { ZodValidationPipe } from '../common/zod-validation.pipe.js';
import {
  type GetQuery,
  type ListQuery,
  bodySchema,
  getQuerySchema,
  listQuerySchema,
  pickSlHeaders,
} from './sl-request.js';
import { SlProxyService } from './sl-proxy.service.js';

type Body = Record<string, unknown>;
type IncomingHeaders = Record<string, string | string[] | undefined>;

/** Proxy del Service Layer: `/api/sl/<Recurso>[/<clave>]` con parámetros OData del frontend. */
@Controller('sl')
export class SlProxyController {
  constructor(private readonly proxy: SlProxyService) {}

  @Get(':resource')
  list(
    @Req() req: AuthenticatedRequest,
    @Param('resource') resource: string,
    @Query(new ZodValidationPipe(listQuerySchema)) query: ListQuery,
    @Headers() headers: IncomingHeaders,
  ) {
    return this.proxy.list(req.user, resource, query, pickSlHeaders(headers, 'GET'));
  }

  @Get(':resource/:key')
  get(
    @Req() req: AuthenticatedRequest,
    @Param('resource') resource: string,
    @Param('key') key: string,
    @Query(new ZodValidationPipe(getQuerySchema)) query: GetQuery,
  ) {
    return this.proxy.get(req.user, resource, key, query);
  }

  @Post(':resource')
  create(
    @Req() req: AuthenticatedRequest,
    @Param('resource') resource: string,
    @Body(new ZodValidationPipe(bodySchema)) body: Body,
    @Headers() headers: IncomingHeaders,
  ) {
    return this.proxy.create(req.user, resource, body, pickSlHeaders(headers, 'POST'));
  }

  @Patch(':resource/:key')
  @HttpCode(204)
  async update(
    @Req() req: AuthenticatedRequest,
    @Param('resource') resource: string,
    @Param('key') key: string,
    @Body(new ZodValidationPipe(bodySchema)) body: Body,
    @Headers() headers: IncomingHeaders,
  ): Promise<void> {
    await this.proxy.update(req.user, resource, key, body, pickSlHeaders(headers, 'PATCH'));
  }
}