let bcrypt = require('bcrypt-nodejs');
let io = require('../security/io');
let messages = require('../misc/messages');
let connections = require('../security/connections');
let leaderboard = require('../leaderboard/leaderboard');
let skins = require('../config/skins');
let roles = require('../config/roles');
let profanities = require('../misc/profanities');
let fixes = require('../fixes/fixes');
let loginRewards = require('../config/loginRewards');
let mail = require('../misc/mail');

module.exports = {
	type: 'auth',

	username: null,
	charname: null,
	characters: {},
	characterList: [],
	stash: null,
	accountInfo: null,

	customChannels: [],

	play: function (data) {
		if (this.username === null)
			return;

		let character = this.characters[data.data.name];
		if (!character)
			return;

		if (character.permadead)
			return;

		character.stash = this.stash;
		character.account = this.username;

		this.charname = character.name;

		this.checkLoginReward(data, character);
	},

	checkLoginReward: function (data, character) {
		let accountInfo = this.accountInfo;

		let scheduler = require('../misc/scheduler');
		let time = scheduler.getTime();
		let lastLogin = accountInfo.lastLogin;
		if ((!lastLogin) || (lastLogin.day !== time.day)) {
			let daysSkipped = 1;
			if (lastLogin) {
				if (time.day > lastLogin.day)
					daysSkipped = time.day - lastLogin.day;
				else {
					let daysInMonth = scheduler.daysInMonth(lastLogin.month);
					daysSkipped = (daysInMonth - lastLogin.day) + time.day;

					for (let i = lastLogin.month + 1; i < time.month - 1; i++) 
						daysSkipped += scheduler.daysInMonth(i);
				}
			}

			if (daysSkipped === 1) {
				accountInfo.loginStreak++;
				if (accountInfo.loginStreak > 21)
					accountInfo.loginStreak = 21;
			} else {
				accountInfo.loginStreak -= (daysSkipped - 1);
				if (accountInfo.loginStreak < 1)
					accountInfo.loginStreak = 1;
			}

			let rewards = loginRewards.generate(accountInfo.loginStreak);
			mail.sendMail(character.name, rewards, this.onSendRewards.bind(this, data, character));
		} else
			this.onSendRewards(data, character);

		accountInfo.lastLogin = time;
	},

	onSendRewards: function (data, character) {
		delete mail.busy[character.name];

		io.set({
			ent: this.username,
			field: 'accountInfo',
			value: JSON.stringify(this.accountInfo),
			callback: this.onUpdateAccountInfo.bind(this, data, character)
		});
	},

	onUpdateAccountInfo: function (data, character) {
		this.obj.player.sessionStart = +new Date();
		this.obj.player.spawn(character, data.callback);

		let prophecies = this.obj.prophecies ? this.obj.prophecies.simplify().list : [];
		leaderboard.setLevel(character.name, this.obj.stats.values.level, prophecies);
	},

	doSave: function (extensionObj) {
		let simple = this.obj.getSimple(true, true);
		simple.components.spliceWhere(c => c.type === 'stash');

		let stats = simple.components.find(c => c.type === 'stats');
		stats.values = extend(true, {}, stats.values);

		let social = simple.components.find(c => c.type === 'social');
		delete social.party;
		delete social.customChannels;

		let statKeys = Object.keys(stats.values);
		let sLen = statKeys.length;
		for (let i = 0; i < sLen; i++) {
			let s = statKeys[i];
			if (
				(
					(s.indexOf('xp') > -1) &&
					(s !== 'xpIncrease')
				) ||
				(s === 'level') ||
				(s === 'hp') ||
				(s === 'mana')
			)
				continue;

			delete stats.values[s];
		}

		//Calculate and store the ttl for effects
		let time = +new Date();
		simple.components.find(e => e.type === 'effects').effects.forEach(function (e) {
			if (e.expire)
				return;

			e.expire = time + (e.ttl * 350);
		});

		let callback = null;
		if (extensionObj) {
			callback = extensionObj.callback;
			delete extensionObj.callback;
		}

		extend(true, simple, extensionObj);

		io.set({
			ent: this.charname,
			field: 'character',
			value: JSON.stringify(simple).split('\'').join('`'),
			callback: callback
		});

		//Save stash
		io.set({
			ent: this.username,
			field: 'stash',
			value: JSON.stringify(this.obj.stash.items).split('\'').join('`')
		});
	},

	simplify: function () {
		return {
			type: 'auth',
			username: this.username,
			charname: this.charname,
			skins: this.skins
		};
	},

	getCharacterList: function (data) {
		if (this.username === null)
			return;

		io.get({
			ent: this.username,
			field: 'characterList',
			callback: this.onGetCharacterList.bind(this, data)
		});
	},
	onGetCharacterList: function (data, result) {
		let characters = JSON.parse(result || '[]');
		this.characterList = characters;

		result = characters
			.map(c => ({
				name: c.name ? c.name : c,
				level: leaderboard.getLevel(c.name ? c.name : c)
			}));

		data.callback(result);
	},

	getCharacter: function (data) {
		let name = data.data.name;
		if (!this.characterList.some(c => ((c.name === name) || (c === name))))
			return;

		io.get({
			ent: name,
			field: 'character',
			callback: this.onGetCharacter.bind(this, data)
		});
	},
	onGetCharacter: function (data, result) {
		if (result) {
			result = result.split('`').join('\'');
			result = result.replace(/''+/g, '\'');
		} else {
			console.log('char not found');
			console.log(data);
		}

		let character = JSON.parse(result || '{}');
		fixes.fixCharacter(character);

		//Hack for old characters
		if (!character.skinId)
			character.skinId = character.class + ' 1';

		character.cell = skins.getCell(character.skinId);
		character.sheetName = skins.getSpritesheet(character.skinId);

		this.characters[data.data.name] = character;

		this.getCustomChannels(data, character);
	},

	getCustomChannels: function (data, character) {
		io.get({
			ent: character.name,
			field: 'customChannels',
			callback: this.onGetCustomChannels.bind(this, data, character)
		});
	},

	onGetCustomChannels: function (data, character, result) {
		this.customChannels = JSON
			.parse(result || '[]')
			.filter(c => (typeof (c) === 'string'))
			.map(c => c.split(' ').join(''))
			.filter(c => (c.length > 0));

		this.customChannels = this.customChannels
			.filter((c, i) => (this.customChannels.indexOf(c) === i));

		let social = character.components.find(c => (c.type === 'social'));
		if (social)
			social.customChannels = this.customChannels;

		this.getStash(data, character);
	},

	getStash: function (data, character) {
		io.get({
			ent: this.username,
			field: 'stash',
			callback: this.onGetStash.bind(this, data, character)
		});
	},

	onGetStash: function (data, character, result) {
		if (result) {
			result = result.split('`').join('\'');
			result = result.replace(/''+/g, '\'');
		}

		this.stash = JSON.parse(result || '[]');

		fixes.fixStash(this.stash);

		if (this.skins !== null) {
			this.verifySkin(character);
			data.callback(character);
		} else {
			data.callback = data.callback.bind(null, character);
			this.getSkins(data, character);
		}
	},

	getSkins: function (msg, character) {
		io.get({
			ent: this.username,
			field: 'skins',
			callback: this.onGetSkins.bind(this, msg, character)
		});
	},

	onGetSkins: function (msg, character, result) {
		this.skins = JSON.parse(result || '[]');
		fixes.fixSkins(this.username, this.skins);

		let list = [...this.skins, ...roles.getSkins(this.username)];
		let skinList = skins.getSkinList(list);

		this.verifySkin(character);

		msg.callback(skinList);
	},

	saveSkin: function (skinId) {
		if (!this.skins) {
			this.getSkins({
				callback: this.saveSkin.bind(this, skinId)
			});

			return;
		}

		this.skins.push(skinId);

		io.set({
			ent: this.username,
			field: 'skins',
			value: JSON.stringify(this.skins),
			callback: this.onSaveSkin.bind(this)
		});
	},

	onSaveSkin: function () {

	},

	verifySkin: function (character) {
		if (!character)
			return;

		let list = [...this.skins, ...roles.getSkins(this.username)];
		let skinList = skins.getSkinList(list);

		if (!skinList.some(s => (s.id === character.skinId))) {
			character.skinId = '1.0';

			character.cell = skins.getCell(character.skinId);
			character.sheetName = skins.getSpritesheet(character.skinId);
		}
	},

	doesOwnSkin: function (skinId) {
		return this.skins.some(s => s === skinId);
	},

	login: function (msg) {
		let credentials = msg.data;

		if ((credentials.username === '') | (credentials.password === '')) {
			msg.callback(messages.login.allFields);
			return;
		}

		this.username = credentials.username;

		io.get({
			ent: credentials.username,
			field: 'login',
			callback: this.onHashCompare.bind(this, msg)
		});
	},
	onHashCompare: function (msg, storedPassword) {
		let credentials = msg.data;

		bcrypt.compare(credentials.password, storedPassword, this.onLogin.bind(this, msg, storedPassword));
	},
	onLogin: function (msg, storedPassword, err, compareResult) {
		if (!storedPassword)
			msg.callback(messages.login.incorrect);
		else if (compareResult) { //If stored password matches the hashed password entered by the user, log them in directly
			this.onLoginVerified(msg);
		} else if (msg.data.password === storedPassword) { //If the stored password matches a plaintext password entered by the user; In that case the password gets hashed for the future
			this.onUnhashedLogin(msg);
		} else
			msg.callback(messages.login.incorrect);
	},
	onUnhashedLogin: function (msg) {
		bcrypt.hash(msg.data.password, null, null, this.onPasswordHashed.bind(this, msg));
	},
	onPasswordHashed: function (msg, err, hashedPassword) {
		io.set({
			ent: msg.data.username,
			field: 'login',
			value: hashedPassword,
			callback: this.onLoginVerified.bind(this, msg)
		});
	},
	onLoginVerified: function (msg) {
		this.username = msg.data.username;
		connections.logOut(this.obj);

		io.get({
			ent: msg.data.username,
			field: 'accountInfo',
			callback: this.onGetAccountInfo.bind(this, msg)
		});
	},

	onGetAccountInfo: function (msg, info) {
		if (!info) {
			info = {
				loginStreak: 0
			};
		} else
			info = JSON.parse(info);

		this.accountInfo = info;

		msg.callback();
	},

	register: function (msg) {
		let credentials = msg.data;

		if ((credentials.username === '') || (credentials.password === '')) {
			msg.callback(messages.login.allFields);
			return;
		}

		let illegal = ["'", '"', '/', '(', ')', '[', ']', '{', '}', ':', ';', '<', '>'];
		for (let i = 0; i < illegal.length; i++) {
			if ((credentials.username.indexOf(illegal[i]) > -1) || (credentials.password.indexOf(illegal[i]) > -1)) {
				msg.callback(messages.login.illegal);
				return;
			}
		}

		io.get({
			ent: credentials.username,
			field: 'login',
			callback: this.onCheckExists.bind(this, msg)
		});
	},
	onCheckExists: function (msg, result) {
		if (result) {
			msg.callback(messages.login.exists);
			return;
		}

		let credentials = msg.data;

		bcrypt.hash(credentials.password, null, null, this.onHashGenerated.bind(this, msg));
	},
	onHashGenerated: function (msg, err, hashedPassword) {
		io.set({
			ent: msg.data.username,
			field: 'login',
			value: hashedPassword,
			callback: this.onRegister.bind(this, msg)
		});
	},
	onRegister: function (msg, result) {
		this.accountInfo = {
			loginStreak: 0
		};

		io.set({
			ent: msg.data.username,
			field: 'characterList',
			value: '[]',
			callback: this.onCreateCharacterList.bind(this, msg)
		});
	},
	onCreateCharacterList: function (msg, result) {
		this.username = msg.data.username;
		connections.logOut(this.obj);
		msg.callback();
	},

	createCharacter: function (msg) {
		let data = msg.data;

		if ((data.name.length < 3) || (data.name.length > 12)) {
			msg.callback(messages.createCharacter.nameLength);
			return;
		}

		if (!profanities.isClean(data.name)) {
			msg.callback(messages.login.invalid);
			return;
		} 
		let name = data.name;

		if (name.indexOf('  ') > -1) {
			msg.callback(messages.login.invalid);
			return;
		}

		let nLen = name.length;
		for (let i = 0; i < nLen; i++) {
			let char = name[i].toLowerCase();
			let valid = [
				'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'
			];

			if (valid.indexOf(char) === -1) {
				msg.callback(messages.login.invalid);
				return;
			}
		}

		io.get({
			ent: data.name,
			field: 'character',
			callback: this.onCheckCharacterExists.bind(this, msg)
		});
	},
	onCheckCharacterExists: function (msg, result) {
		if (result) {
			msg.callback(messages.login.charExists);
			return;
		}

		let data = msg.data;

		this.obj.name = data.name;
		this.obj.skinId = data.skinId;
		this.obj.class = data.class;

		this.obj.cell = skins.getCell(this.obj.skinId);
		this.obj.sheetName = skins.getSpritesheet(this.obj.skinId);

		this.verifySkin(this.obj);

		let simple = this.obj.getSimple(true);
		let prophecies = data.prophecies || [];
		prophecies = prophecies.filter((p, i) => (prophecies.indexOf(p) === i));
		simple.components.push({
			type: 'prophecies',
			list: prophecies
		});

		io.set({
			ent: data.name,
			field: 'character',
			value: JSON.stringify(simple),
			callback: this.onCreateCharacter.bind(this, msg)
		});
	},
	onCreateCharacter: function (msg, result) {
		let name = msg.data.name;

		let simple = this.obj.getSimple(true);
		simple.components.push({
			type: 'prophecies',
			list: msg.data.prophecies || []
		});
		simple.components.push({
			type: 'social',
			customChannels: this.customChannels
		});

		this.characters[name] = simple;
		this.characterList.push(name);
		io.set({
			ent: this.username,
			field: 'characterList',
			value: JSON.stringify(this.characterList),
			callback: this.onAppendList.bind(this, msg)
		});
	},

	deleteCharacter: function (msg) {
		let data = msg.data;

		if ((!data.name) || (!this.username))
			return;

		if (!this.characterList.some(c => ((c.name === data.name) || (c === data.name)))) {
			msg.callback([]);
			return;
		}

		io.delete({
			ent: data.name,
			field: 'character',
			callback: this.onDeleteCharacter.bind(this, msg)
		});
	},
	onDeleteCharacter: function (msg, result) {
		this.characterList.spliceWhere(c => ((c.name === msg.data.name) || (c === msg.data.name)));
		let characterList = this.characterList
			.map(c => ({
				name: c.name ? c.name : c,
				level: leaderboard.getLevel(c.name ? c.name : c)
			}));

		io.set({
			ent: this.username,
			field: 'characterList',
			value: JSON.stringify(characterList),
			callback: this.onRemoveFromList.bind(this, msg)
		});

		leaderboard.deleteCharacter(msg.data.name);
	},
	onRemoveFromList: function (msg, result) {
		result = this.characterList
			.map(c => ({
				name: c.name ? c.name : c,
				level: leaderboard.getLevel(c.name ? c.name : c)
			}));

		msg.callback(result);
	},

	onAppendList: function (msg, result) {
		this.play({
			data: {
				name: msg.data.name
			},
			callback: msg.callback
		});
	},

	permadie: function () {
		this.obj.permadead = true;

		this.doSave({
			permadead: true,
			callback: this.onPermadie.bind(this)
		});
	},

	onPermadie: function () {
		process.send({
			method: 'object',
			serverId: this.obj.serverId,
			obj: {
				dead: true
			}
		});
	}
};