import {
  Controller,
  Get,
  Post,
  Param,
  Body,
  UseGuards,
  UseInterceptors,
  UploadedFiles,
  BadRequestException,
} from '@nestjs/common';
import { AuthGuard } from '@nestjs/passport';
import { FileFieldsInterceptor } from '@nestjs/platform-express';
import { CommentService } from './comment.service';
import { Roles } from '../common/decorators/roles.decorator';
import { RolesGuard } from '../common/guards/roles.guard';
import { TenantGuard } from '../common/guards/tenant.guard';
import { CurrentUser, CurrentUserPayload } from '../common/decorators/current-user.decorator';
import { multerOptions } from '../common/multer/multer.config';

@Controller('tickets/:ticketId/comments')
@UseGuards(AuthGuard('jwt'), TenantGuard, RolesGuard)
export class CommentController {
  constructor(private readonly commentService: CommentService) {}

  @Get()
  @Roles('technician', 'collector')
  async findAll(
    @CurrentUser() user: CurrentUserPayload,
    @Param('ticketId') ticketId: string,
  ) {
    return this.commentService.findAll(user.tenantId, ticketId);
  }

  @Post()
  @Roles('technician', 'collector')
  @UseInterceptors(FileFieldsInterceptor([{ name: 'files', maxCount: 3 }], multerOptions))
  async create(
    @CurrentUser() user: CurrentUserPayload,
    @Param('ticketId') ticketId: string,
    @Body() body: any,
    @UploadedFiles() files?: { files?: Express.Multer.File[] },
  ) {
    let content = body?.content;
    if (Array.isArray(content)) content = content[0];
    if (typeof content !== 'string') content = String(content ?? '');
    if (!content || content.length > 50000) {
      throw new BadRequestException('Content must be between 1 and 50000 characters');
    }
    return this.commentService.create(
      user.tenantId,
      ticketId,
      user.sub,
      content,
      files?.files,
    );
  }
}