'use strict';

const router = require('express').Router();
const {Host, Domain} = require('../models').models;
const authz = require('../middleware/authz');
const {normalizeHostFeatures} = require('../utils/host_features');

const Model = Host;

router.get('/', async function(req, res, next){
	try{
		let results = await Model[req.query.detail ? "listDetail" : "list"]();

		// Restrict to hosts whose domain the caller may view. list() yields host
		// strings; listDetail() yields instances with a .host.
		results = await authz.filterViewable(req, results,
			item => (typeof item === 'string' ? item : item.host));

		return res.json({results});
	}catch(error){
		return next(error);
	}
});

router.post('/', authz.requireDomainRole('manager', authz.resolve.hostBody), async function(req, res, next){
	try{
		req.body.created_by = authz.reqUsername(req);
		normalizeHostFeatures(req.body);
		let item = await Model.create(req.body);

		return res.json({
			message: `"${item[Model._key]}" added.`,
			...item,
		});
	} catch (error){
		next(error);
	}
});

router.get('/lookup/:item', authz.requireDomainRole('viewer', authz.resolve.hostParam), async function(req, res, next){
	try{
		return res.json({
			string: req.params.item,
			results: await Model.lookUp(req.params.item),
		});

	}catch(error){
		return next(error);
	}
});

// The full lookup tree exposes every host, so restrict it to admins.
router.get('/lookupobj', authz.requireAdmin, async function(req, res, next){
	try{
		return res.json({
			results: Model.lookUpObj,
		});

	}catch(error){
		return next(error);
	}
});

router.delete('/cache', authz.requireAdmin, async function(req, res, next){
	try{
		let count = await Model.clearCache();

		return res.json({
			message: `Cleared ${count} cached host${count === 1 ? '' : 's'}.`,
			count,
		});
	}catch(error){
		return next(error);
	}
});

router.get('/:item', authz.requireDomainRole('viewer', authz.resolve.hostParam), async function(req, res, next){
	try{

		return res.json({
			item: req.params.item,
			results: await Model.get(req.params.item)
		});
	}catch(error){
		return next(error);
	}
});

router.put('/:item', authz.requireDomainRole('manager', authz.resolve.hostParam), async function(req, res, next){
	try{
		req.body.updated_by = authz.reqUsername(req);
		normalizeHostFeatures(req.body);
		let item = await Model.get(req.params.item);
		item = await item.update(req.body);

		return res.json({
			message: `"${req.params.item}" updated.`,
			__requestedHost: req.params.item,
			...item,
		});

	}catch(error){
		return next(error);

	}
});

router.delete('/:item', authz.requireDomainRole('manager', authz.resolve.hostParam), async function(req, res, next){
	try{
		let item = await Model.get(req.params.item);
		let count = await item.remove();

		return res.json({
			message: `${req.params.item} deleted`,
			...item,
		});

	}catch(error){
		return next(error);
	}
});

router.put('/:item/renew', authz.requireDomainRole('manager', authz.resolve.hostParam), async function(req, res, next){
	try{
		let item = await Model.get(req.params.item);
		item.createWildcardCert();

		return res.json({
			message: `Requesting wildcard cert for ${req.params.item}`,
		})
	}catch(error){
		next(error);
	}
});

module.exports = router;