const axios = require('axios').default;

const data = require('../data');

const TEAM_TYPE = {
	PUBLIC: 0,
	PRIVATE: 1
};

const { server } = data;

const rocketchat = axios.create({
	baseURL: `${server}/api/v1/`,
	headers: {
		'Content-Type': 'application/json;charset=UTF-8'
	}
});

const login = async (username, password) => {
	console.log(`Logging in as user ${username}`);
	const response = await rocketchat.post('login', {
		user: username,
		password
	});
	const { userId } = response.data.data;
	const { authToken } = response.data.data;
	rocketchat.defaults.headers.common['X-User-Id'] = userId;
	rocketchat.defaults.headers.common['X-Auth-Token'] = authToken;
	return { authToken, userId };
};

const createUser = async (username, password, name, email) => {
	console.log(`Creating user ${username}`);
	try {
		await rocketchat.post('users.create', {
			username,
			password,
			name,
			email
		});
	} catch (error) {
		console.log(JSON.stringify(error));
		throw new Error('Failed to create user');
	}
};

const createChannelIfNotExists = async channelname => {
	console.log(`Creating public channel ${channelname}`);
	try {
		const room = await rocketchat.post('channels.create', {
			name: channelname
		});
		return room;
	} catch (createError) {
		try {
			// Maybe it exists already?
			const room = rocketchat.get(`channels.info?roomName=${channelname}`);
			return room;
		} catch (infoError) {
			console.log(JSON.stringify(createError));
			console.log(JSON.stringify(infoError));
			throw new Error('Failed to find or create public channel');
		}
	}
};

const createTeamIfNotExists = async teamname => {
	console.log(`Creating private team ${teamname}`);
	try {
		await rocketchat.post('teams.create', {
			name: teamname,
			type: TEAM_TYPE.PRIVATE
		});
	} catch (createError) {
		try {
			// Maybe it exists already?
			await rocketchat.get(`teams.info?teamName=${teamname}`);
		} catch (infoError) {
			console.log(JSON.stringify(createError));
			console.log(JSON.stringify(infoError));
			throw new Error('Failed to find or create private team');
		}
	}
};

const createGroupIfNotExists = async groupname => {
	console.log(`Creating private group ${groupname}`);
	try {
		await rocketchat.post('groups.create', {
			name: groupname
		});
	} catch (createError) {
		try {
			// Maybe it exists already?
			await rocketchat.get(`groups.info?roomName=${groupname}`);
		} catch (infoError) {
			console.log(JSON.stringify(createError));
			console.log(JSON.stringify(infoError));
			throw new Error('Failed to find or create private group');
		}
	}
};

const changeChannelJoinCode = async (roomId, joinCode) => {
	console.log(`Changing channel Join Code ${roomId}`);
	try {
		await rocketchat.post('method.call/saveRoomSettings', {
			message: JSON.stringify({
				method: 'saveRoomSettings',
				params: [roomId, { joinCode }]
			})
		});
	} catch (createError) {
		console.log(JSON.stringify(createError));
		throw new Error('Failed to create protected channel');
	}
};

const sendMessage = async (user, channel, msg, tmid) => {
	console.log(`Sending message to ${channel}`);
	try {
		await login(user.username, user.password);
		const response = await rocketchat.post('chat.postMessage', { channel, msg, tmid });
		return response.data;
	} catch (infoError) {
		console.log(JSON.stringify(infoError));
		throw new Error('Failed to find or create private group');
	}
};

const setup = async () => {
	await login(data.adminUser, data.adminPassword);

	for (const userKey in data.users) {
		if (Object.prototype.hasOwnProperty.call(data.users, userKey)) {
			const user = data.users[userKey];
			await createUser(user.username, user.password, user.username, user.email);
		}
	}

	for (const channelKey in data.channels) {
		if (Object.prototype.hasOwnProperty.call(data.channels, channelKey)) {
			const channel = data.channels[channelKey];
			const {
				data: {
					channel: { _id }
				}
			} = await createChannelIfNotExists(channel.name);

			if (channel.joinCode) {
				await changeChannelJoinCode(_id, channel.joinCode);
			}
		}
	}

	await login(data.users.regular.username, data.users.regular.password);

	for (const groupKey in data.groups) {
		if (Object.prototype.hasOwnProperty.call(data.groups, groupKey)) {
			const group = data.groups[groupKey];
			await createGroupIfNotExists(group.name);
		}
	}

	for (const teamKey in data.teams) {
		if (Object.prototype.hasOwnProperty.call(data.teams, teamKey)) {
			const team = data.teams[teamKey];
			await createTeamIfNotExists(team.name);
		}
	}
};

const get = endpoint => {
	console.log(`GET /${endpoint}`);
	return rocketchat.get(endpoint);
};

const post = (endpoint, body) => {
	console.log(`POST /${endpoint} ${JSON.stringify(body)}`);
	return rocketchat.post(endpoint, body);
};

module.exports = {
	setup,
	sendMessage,
	get,
	post,
	login
};