import { inviteRoleValidation, inviteBodyValidation, inviteVerificationBodyValidation } from "../validation/joi.js";
import jwt from "jsonwebtoken";
import { getTokenFromHeaders } from "../utils/utils.js";
import { asyncHandler, createServerError } from "../utils/errorUtils.js";

const SERVICE_NAME = "inviteController";

class InviteController {
	constructor(db, settingsService, emailService, stringService) {
		this.db = db;
		this.settingsService = settingsService;
		this.emailService = emailService;
		this.stringService = stringService;
	}

	/**
	 * Issues an invitation to a new user. Only admins can invite new users. An invitation token is created and sent via email.
	 * @async
	 * @param {Object} req - The Express request object.
	 * @property {Object} req.headers - The headers of the request.
	 * @property {string} req.headers.authorization - The authorization header containing the JWT token.
	 * @property {Object} req.body - The body of the request.
	 * @property {string} req.body.email - The email of the user to be invited.
	 * @param {Object} res - The Express response object.
	 * @param {function} next - The next middleware function.
	 * @returns {Object} The response object with a success status, a message indicating the sending of the invitation, and the invitation token.
	 * @throws {Error} If there is an error during the process, especially if there is a validation error (422).
	 */
	getInviteToken = asyncHandler(
		async (req, res, next) => {
			// Only admins can invite
			const token = getTokenFromHeaders(req.headers);
			const { role, teamId } = jwt.decode(token);
			req.body.teamId = teamId;
			await inviteRoleValidation.validateAsync({ roles: role });
			await inviteBodyValidation.validateAsync(req.body);

			const inviteToken = await this.db.requestInviteToken({ ...req.body });
			return res.success({
				msg: this.stringService.inviteIssued,
				data: inviteToken,
			});
		},
		SERVICE_NAME,
		"getInviteToken"
	);

	sendInviteEmail = asyncHandler(
		async (req, res, next) => {
			// Only admins can invite
			const token = getTokenFromHeaders(req.headers);
			const { role, firstname, teamId } = jwt.decode(token);
			req.body.teamId = teamId;
			await inviteRoleValidation.validateAsync({ roles: role });
			await inviteBodyValidation.validateAsync(req.body);

			const inviteToken = await this.db.requestInviteToken({ ...req.body });
			const { clientHost } = this.settingsService.getSettings();

			const html = await this.emailService.buildEmail("employeeActivationTemplate", {
				name: firstname,
				link: `${clientHost}/register/${inviteToken.token}`,
			});
			const result = await this.emailService.sendEmail(req.body.email, "Welcome to Uptime Monitor", html);
			if (!result) {
				throw createServerError("Failed to send invite e-mail... Please verify your settings.");
			}

			return res.success({
				msg: this.stringService.inviteIssued,
				data: inviteToken,
			});
		},
		SERVICE_NAME,
		"sendInviteEmail"
	);

	inviteVerifyController = asyncHandler(
		async (req, res, next) => {
			await inviteVerificationBodyValidation.validateAsync(req.body);
			const invite = await this.db.getInviteToken(req.body.token);
			return res.success({
				msg: this.stringService.inviteVerified,
				data: invite,
			});
		},
		SERVICE_NAME,
		"inviteVerifyController"
	);
}

export default InviteController;