'use strict';

var defaults = {
	baseUrl: 'https://dns.api.gandi.net/api/v5/'
};

module.exports.create = function(config) {
	var baseUrl = (config.baseUrl || defaults.baseUrl).replace(/\/$/, '');
	var authtoken = config.token;
	var request;

	return {
		init: function(opts) {
			request = opts.request;
			return null;
		},

		zones: function(opts) {
			console.log(opts);

			return request({
				method: 'GET',
				url: baseUrl + '/zones',
				headers: {
					'X-Api-Key': authtoken
				},
				json: true
			}).then(function(resp) {
				return resp.body.map(function(zone) {
					return zone.name;
				});
			});
		},

		set: function(opts) {
			console.log(opts);

			return request({
				method: 'GET',
				url:
					baseUrl +
					'/domains/' +
					opts.challenge.dnsZone +
					'/records/' +
					opts.challenge.dnsPrefix +
					'/TXT',
				headers: {
					'X-Api-Key': authtoken
				},
				json: true
			}).then(function(resp) {
				if (resp.body.cause === 'Not Found') {
					return request({
						method: 'POST',
						url:
							baseUrl +
							'/domains/' +
							opts.challenge.dnsZone +
							'/records',
						headers: {
							'X-Api-Key': authtoken
						},
						json: {
							rrset_name: opts.challenge.dnsPrefix,
							rrset_type: 'TXT',
							rrset_ttl: 300,
							rrset_values: [opts.challenge.dnsAuthorization]
						}
					});
				} else {
					const body = resp.body;
					let value = body.rrset_values.map(x => JSON.parse(x));

					if (body.rrset_values) {
						return request({
							method: 'PUT',
							url:
								baseUrl +
								'/domains/' +
								opts.challenge.dnsZone +
								'/records/' +
								opts.challenge.dnsPrefix +
								'/TXT',
							headers: {
								'X-Api-Key': authtoken
							},
							json: {
								rrset_ttl: 300,
								rrset_values: value.concat([
									opts.challenge.dnsAuthorization
								])
							}
						});
					}
				}
			});
		},

		remove: function(opts) {
			console.log(opts);

			return request({
				method: 'DELETE',
				url:
					baseUrl +
					'/domains/' +
					opts.challenge.dnsZone +
					'/records/' +
					opts.challenge.dnsPrefix +
					'/TXT',
				headers: {
					'X-Api-Key': authtoken
				},
				json: true
			});
		},

		get: function(opts) {
			console.log(opts);

			return request({
				method: 'GET',
				url:
					baseUrl +
					'/domains/' +
					opts.challenge.dnsZone +
					'/records/' +
					opts.challenge.dnsPrefix,
				headers: {
					'X-Api-Key': authtoken
				},
				json: true
			}).then(function(resp) {
				const body = resp.body;
				if (body.length > 0) {
					let value = body[0].rrset_values
						.map(x => JSON.parse(x))
						.filter(
							field => field === opts.challenge.dnsAuthorization
						);
					if (value !== []) {
						return {
							dnsAuthorization: value[0]
						};
					} else {
						return null;
					}
				} else {
					return null;
				}
			});
		}
	};
};