import { CacheInterceptor, CacheTTL } from "@nestjs/cache-manager";
import {
	Body,
	Controller,
	DefaultValuePipe,
	Delete,
	Get,
	Header,
	NotFoundException,
	Param,
	ParseBoolPipe,
	ParseIntPipe,
	Post,
	Query,
	Req,
	Res,
	UploadedFile,
	UseGuards,
	UseInterceptors,
} from "@nestjs/common";
import { FileInterceptor } from "@nestjs/platform-express";
import type { Response } from "express";
import { Roles } from "../auth/decorators/roles.decorator";
import { AuthGuard } from "../auth/guards/auth.guard";
import { OptionalAuthGuard } from "../auth/guards/optional-auth.guard";
import { RolesGuard } from "../auth/guards/roles.guard";
import type { AuthenticatedRequest } from "../common/interfaces/request.interface";
import { ContentsService } from "./contents.service";
import { CreateContentDto } from "./dto/create-content.dto";
import { UploadContentDto } from "./dto/upload-content.dto";

@Controller("contents")
export class ContentsController {
	constructor(private readonly contentsService: ContentsService) {}

	@Post()
	@UseGuards(AuthGuard)
	create(
		@Req() req: AuthenticatedRequest,
		@Body() createContentDto: CreateContentDto,
	) {
		return this.contentsService.create(req.user.sub, createContentDto);
	}

	@Post("upload-url")
	@UseGuards(AuthGuard)
	getUploadUrl(
		@Req() req: AuthenticatedRequest,
		@Query("fileName") fileName: string,
	) {
		return this.contentsService.getUploadUrl(req.user.sub, fileName);
	}

	@Post("upload")
	@UseGuards(AuthGuard)
	@UseInterceptors(FileInterceptor("file"))
	upload(
		@Req() req: AuthenticatedRequest,
		@UploadedFile()
		file: Express.Multer.File,
		@Body() uploadContentDto: UploadContentDto,
	) {
		return this.contentsService.uploadAndProcess(
			req.user.sub,
			file,
			uploadContentDto,
		);
	}

	@Get("explore")
	@UseGuards(OptionalAuthGuard)
	@UseInterceptors(CacheInterceptor)
	@CacheTTL(60)
	@Header("Cache-Control", "public, max-age=60")
	explore(
		@Req() req: AuthenticatedRequest,
		@Query("limit", new DefaultValuePipe(10), ParseIntPipe) limit: number,
		@Query("offset", new DefaultValuePipe(0), ParseIntPipe) offset: number,
		@Query("sort") sort?: "trend" | "recent",
		@Query("tag") tag?: string,
		@Query("category") category?: string,
		@Query("author") author?: string,
		@Query("query") query?: string,
		@Query("favoritesOnly", new DefaultValuePipe(false), ParseBoolPipe)
		favoritesOnly?: boolean,
		@Query("userId") userIdQuery?: string,
	) {
		return this.contentsService.findAll({
			limit,
			offset,
			sortBy: sort,
			tag,
			category,
			author,
			query,
			favoritesOnly,
			userId: userIdQuery || req.user?.sub,
		});
	}

	@Get("trends")
	@UseGuards(OptionalAuthGuard)
	@UseInterceptors(CacheInterceptor)
	@CacheTTL(300)
	@Header("Cache-Control", "public, max-age=300")
	trends(
		@Req() req: AuthenticatedRequest,
		@Query("limit", new DefaultValuePipe(10), ParseIntPipe) limit: number,
		@Query("offset", new DefaultValuePipe(0), ParseIntPipe) offset: number,
	) {
		return this.contentsService.findAll({
			limit,
			offset,
			sortBy: "trend",
			userId: req.user?.sub,
		});
	}

	@Get("recent")
	@UseGuards(OptionalAuthGuard)
	@UseInterceptors(CacheInterceptor)
	@CacheTTL(60)
	@Header("Cache-Control", "public, max-age=60")
	recent(
		@Req() req: AuthenticatedRequest,
		@Query("limit", new DefaultValuePipe(10), ParseIntPipe) limit: number,
		@Query("offset", new DefaultValuePipe(0), ParseIntPipe) offset: number,
	) {
		return this.contentsService.findAll({
			limit,
			offset,
			sortBy: "recent",
			userId: req.user?.sub,
		});
	}

	@Get(":idOrSlug")
	@UseGuards(OptionalAuthGuard)
	@UseInterceptors(CacheInterceptor)
	@CacheTTL(3600)
	@Header("Cache-Control", "public, max-age=3600")
	async findOne(
		@Param("idOrSlug") idOrSlug: string,
		@Req() req: AuthenticatedRequest,
		@Res() res: Response,
	) {
		const content = await this.contentsService.findOne(idOrSlug, req.user?.sub);
		if (!content) {
			throw new NotFoundException("Contenu non trouvé");
		}

		const userAgent = req.headers["user-agent"] || "";
		const isBot =
			/bot|googlebot|crawler|spider|robot|crawling|facebookexternalhit|twitterbot/i.test(
				userAgent,
			);

		if (isBot) {
			const html = this.contentsService.generateBotHtml(content);
			return res.send(html);
		}

		return res.json(content);
	}

	@Post(":id/view")
	incrementViews(@Param("id") id: string) {
		return this.contentsService.incrementViews(id);
	}

	@Post(":id/use")
	incrementUsage(@Param("id") id: string) {
		return this.contentsService.incrementUsage(id);
	}

	@Delete(":id")
	@UseGuards(AuthGuard)
	remove(@Param("id") id: string, @Req() req: AuthenticatedRequest) {
		return this.contentsService.remove(id, req.user.sub);
	}

	@Delete(":id/admin")
	@UseGuards(AuthGuard, RolesGuard)
	@Roles("admin")
	removeAdmin(@Param("id") id: string) {
		return this.contentsService.removeAdmin(id);
	}
}