import {
  Body,
  Controller,
  Get,
  Param,
  ParseIntPipe,
  Post,
  Query,
  UseGuards,
} from '@nestjs/common';
import {
  IsInt,
  IsOptional,
  IsString,
  MaxLength,
  MinLength,
} from 'class-validator';
import { Type } from 'class-transformer';
import { ForumService } from './forum.service';
import { CurrentUser, JwtAuthGuard, type JwtPayload } from '../auth/roles';

class CreateThreadDto {
  @IsString() @MinLength(1) @MaxLength(40)
  board!: string;

  @IsOptional() @Type(() => Number) @IsInt()
  modelId?: number;

  @IsString() @MinLength(2) @MaxLength(80)
  title!: string;

  @IsString() @MinLength(1) @MaxLength(5000)
  body!: string;
}

class ReplyDto {
  @IsString() @MinLength(1) @MaxLength(5000)
  body!: string;
}

@Controller('api')
export class ForumController {
  constructor(private readonly forum: ForumService) {}

  @Get('boards')
  boards() {
    return this.forum.boards();
  }

  @Get('threads')
  list(
    @Query('board') board?: string,
    @Query('modelId') modelId?: string,
  ) {
    return this.forum.listThreads({
      board,
      modelId: modelId ? Number(modelId) : undefined,
    });
  }

  @Get('threads/:id')
  get(@Param('id', ParseIntPipe) id: number) {
    return this.forum.getThread(id);
  }

  @Post('threads')
  @UseGuards(JwtAuthGuard)
  create(@Body() dto: CreateThreadDto, @CurrentUser() user: JwtPayload) {
    return this.forum.createThread(user.sub, dto);
  }

  @Post('threads/:id/replies')
  @UseGuards(JwtAuthGuard)
  reply(
    @Param('id', ParseIntPipe) id: number,
    @Body() dto: ReplyDto,
    @CurrentUser() user: JwtPayload,
  ) {
    return this.forum.addReply(user.sub, id, dto.body);
  }
}