import {
	Body,
	Controller,
	Get,
	Headers,
	Post,
	Query,
	Req,
	Res,
} from "@nestjs/common";
import { ConfigService } from "@nestjs/config";
import { Throttle } from "@nestjs/throttler";
import type { Request, Response } from "express";
import { getIronSession } from "iron-session";
import { AuthService } from "./auth.service";
import { BootstrapService } from "./bootstrap.service";
import { LoginDto } from "./dto/login.dto";
import { RegisterDto } from "./dto/register.dto";
import { Verify2faDto } from "./dto/verify-2fa.dto";
import { getSessionOptions, SessionData } from "./session.config";

@Controller("auth")
export class AuthController {
	constructor(
		private readonly authService: AuthService,
		private readonly bootstrapService: BootstrapService,
		private readonly configService: ConfigService,
	) {}

	@Post("register")
	@Throttle({ default: { limit: 5, ttl: 60000 } })
	register(@Body() registerDto: RegisterDto) {
		return this.authService.register(registerDto);
	}

	@Post("login")
	@Throttle({ default: { limit: 5, ttl: 60000 } })
	async login(
		@Body() loginDto: LoginDto,
		@Headers("user-agent") userAgent: string,
		@Req() req: Request,
		@Res() res: Response,
	) {
		const ip = req.ip;
		const result = await this.authService.login(loginDto, userAgent, ip);

		if (result.access_token) {
			const session = await getIronSession<SessionData>(
				req,
				res,
				getSessionOptions(this.configService.get("SESSION_PASSWORD") as string),
			);
			session.accessToken = result.access_token;
			session.refreshToken = result.refresh_token;
			session.userId = result.userId;
			await session.save();

			// On ne renvoie pas les tokens dans le body pour plus de sécurité
			return res.json({
				message: result.message,
				userId: result.userId,
			});
		}

		return res.json(result);
	}

	@Post("verify-2fa")
	@Throttle({ default: { limit: 5, ttl: 60000 } })
	async verifyTwoFactor(
		@Body() verify2faDto: Verify2faDto,
		@Headers("user-agent") userAgent: string,
		@Req() req: Request,
		@Res() res: Response,
	) {
		const ip = req.ip;
		const result = await this.authService.verifyTwoFactorLogin(
			verify2faDto.userId,
			verify2faDto.token,
			userAgent,
			ip,
		);

		if (result.access_token) {
			const session = await getIronSession<SessionData>(
				req,
				res,
				getSessionOptions(this.configService.get("SESSION_PASSWORD") as string),
			);
			session.accessToken = result.access_token;
			session.refreshToken = result.refresh_token;
			session.userId = verify2faDto.userId;
			await session.save();

			return res.json({
				message: result.message,
			});
		}

		return res.json(result);
	}

	@Post("refresh")
	async refresh(@Req() req: Request, @Res() res: Response) {
		const session = await getIronSession<SessionData>(
			req,
			res,
			getSessionOptions(this.configService.get("SESSION_PASSWORD") as string),
		);

		if (!session.refreshToken) {
			return res.status(401).json({ message: "No refresh token" });
		}

		const result = await this.authService.refresh(session.refreshToken);

		session.accessToken = result.access_token;
		session.refreshToken = result.refresh_token;
		await session.save();

		return res.json({ message: "Token refreshed" });
	}

	@Post("logout")
	async logout(@Req() req: Request, @Res() res: Response) {
		const session = await getIronSession<SessionData>(
			req,
			res,
			getSessionOptions(this.configService.get("SESSION_PASSWORD") as string),
		);
		session.destroy();
		return res.json({ message: "User logged out" });
	}

	@Get("bootstrap-admin")
	async bootstrapAdmin(
		@Query("token") token: string,
		@Query("username") username: string,
	) {
		return this.bootstrapService.consumeToken(token, username);
	}
}