module.exports = class SSHLogin {
	constructor() {
		this.awaitUsername = false;
		this.awaitPassword = false;
		this.username = "";
		this.password = "";
		this.loggedIn = false;
		this.player = null;
		this.failCount = 0;
		this.inputBuffer = [];
		this.inputHistory = [];
		this.isReconnecting = false;
		this.reconnectLogin = null;
		this.cursorPos = 0;
		this.historyPos = 0;
	}

	attachChannel(channel) {
		this.socket = channel;
	}

	attach(userData) {
		this.socket.write(config.welcomeBanner.replace(/\n/g, "\r\n") + "\r\n");
		world.mud_playerLoad(this, userData);
		this.loggedIn = true;

	}

	receive(data) {
		if(this.handleSpecialKeys(data)) {
			return;
		}
		
		//typing output
		if(data == "\x7f") { //backspace
			this.inputBuffer.splice(--this.cursorPos, 1);
			this.socket.write("\r" + " ".repeat(80));
		} else if(data == "\x1b\x5b\x33\x7e") { //delete
			this.inputBuffer.splice(this.cursorPos, 1);
			this.socket.write("\r" + " ".repeat(80));
		} else if(data == "\x0d") {
			//mute return
			this.inputBuffer.push(data.toString());
		} else {
			this.inputBuffer[this.cursorPos++] = data.toString();
		}
		this.socket.write("\r");
		this.socket.write(this.inputBuffer.join(""));
		this.socket.write("\b".repeat(this.inputBuffer.length - this.cursorPos));
		
		if(!(this.inputBuffer.join("").indexOf("\r\n") != -1 || this.inputBuffer.join("").indexOf("\n") != -1 || this.inputBuffer.join("").indexOf("\r") != -1)) {
			//did not see a return char, keep building buffer
			return;
		}
		this.inputBuffer = this.inputBuffer.join("").replace("\r", "").split("");
		this.inputBuffer = this.inputBuffer.join("").replace("\n", "").split("");
		var input = this.inputBuffer.join("").toString().trim().split(" ");
		this.inputHistory.push(""+input.join(" "));
		this.historyPos = this.inputHistory.length;
		this.inputBuffer = [];
		//local echo
		this.socket.write(this.inputBuffer.join("") + "\r\n");
		this.receivePlayer(input);
		this.cursorPos = 0;
	}

	handleSpecialKeys(data) {
		if(data == "\x03") { //ctrl + c
			this.logout();
			return true;
		}
		if(data == "\x1b\x5b\x41") { //up
			this.historyPos = Math.max(0, this.historyPos-1);
			this.inputBuffer = this.inputHistory[this.historyPos].split("");
			this.cursorPos = this.inputBuffer.length;
			this.socket.write("\r" + " ".repeat(80));
			this.socket.write("\r");
		this.socket.write(this.inputBuffer.join(""));
		this.socket.write("\b".repeat(this.inputBuffer.length - this.cursorPos));
			return true;
		}
		if(data == "\x1b\x5b\x42") { //down
			this.historyPos = Math.min(this.inputHistory.length, this.historyPos+1);
			if(this.historyPos < this.inputHistory.length) {
				this.inputBuffer = this.inputHistory[this.historyPos].split("");
			} else {
				this.inputBuffer = [];
			}
			this.cursorPos = this.inputBuffer.length;
			this.socket.write("\r" + " ".repeat(80));
			this.socket.write("\r");
		this.socket.write(this.inputBuffer.join(""));
		this.socket.write("\b".repeat(this.inputBuffer.length - this.cursorPos));
			return true;
		}
		if(data == "\x1b\x5b\x44") { //left
			this.cursorPos = Math.max(0, this.cursorPos-1);
			this.socket.write("\b");
			return true;
		}
		if(data == "\x1b\x5b\x43") { //right
			this.cursorPos = Math.min(this.inputBuffer.length, this.cursorPos+1);
			this.socket.write(this.inputBuffer[this.cursorPos-1]);
			return true;
		}
		if(data == "\x1b\x5b\x48") {//home
			this.cursorPos = 0;
			return true;
		}

		if(data == "\x1b\x5b\x46") {//end
			this.cursorPos = this.inputBuffer.length;
			return true;
		}

		return false;
	}

	sendMessage(message){
		var terminalWidthPreference = (!this.player.hasOwnProperty("terminalWidthPreference") || this.player.terminalWidthPreference == null) ? 78 :  this.player.terminalWidthPreference;
		var hintColor = (!this.player.hasOwnProperty("hintColor") || this.player.hintColor == null) ? libs.Color.FgMagenta :  libs.Color[this.player.hintColor];
		var simpleMessage = message.replace(/\{.*?\}/g, "");

		message  = libs.Color.Reset + message;
		message = message.replace(/\{hint\}/g, hintColor);
		message = message.replace(/\{\/hint\}/g, libs.Color.Reset);

		message = message.replace(/\{mobile\}/g, libs.Color.FgYellow);
		message = message.replace(/\{\/mobile\}/g, libs.Color.Reset);

		message = message.replace(/\{item\}/g, libs.Color.FgGreen);
		message = message.replace(/\{\/item\}/g, libs.Color.Reset);

		message = message.replace(/\{error\}/g, libs.Color.FgRed);
		message = message.replace(/\{\/error\}/g, libs.Color.Reset);

		message = message.replace(/\{global\}/g, libs.Color.FgCyan);
		message = message.replace(/\{\/global\}/g, libs.Color.Reset);

		message = message.replace(/\{red\}/g, libs.Color.FgRed);
		message = message.replace(/\{\/red\}/g, libs.Color.Reset);
		message = message.replace(/\{green\}/g, libs.Color.FgGreen);
		message = message.replace(/\{\/green\}/g, libs.Color.Reset);
		message = message.replace(/\{yellow\}/g, libs.Color.FgYellow);
		message = message.replace(/\{\/yellow\}/g, libs.Color.Reset);
		message = message.replace(/\{blue\}/g, libs.Color.FgBlue);
		message = message.replace(/\{\/blue\}/g, libs.Color.Reset);
		message = message.replace(/\{magenta\}/g, libs.Color.FgMagenta);
		message = message.replace(/\{\/magenta\}/g, libs.Color.Reset);
		message = message.replace(/\{cyan\}/g, libs.Color.FgCyan);
		message = message.replace(/\{\/cyan\}/g, libs.Color.Reset);

		message = message.replace(/\{.*?\}/g, "");

		var buffer = [], colorBuffer = [];
		buffer = simpleMessage.split(" ");
		colorBuffer = message.split(" ");
		while(buffer.length > 0) {
			var wrapString = buffer.shift();
			var displayString = colorBuffer.shift();
			if(buffer.length > 0) {
				while(wrapString.length + buffer[0].length < terminalWidthPreference) {
					wrapString += " " + buffer.shift();
					displayString += " " + colorBuffer.shift();
					if(buffer.length == 0) {
						break;
					}
				}
			}
			this.socket.write(displayString + "\r\n");
		}

		//this.socket.write("\r");
		//this.socket.write(this.inputBuffer.join(""));
		//this.socket.write("\b".repeat(this.inputBuffer.length - this.cursorPos));
	}


	disconnect() {
		if(this.isReconnecting) {
			this.player.login = this.reconnectLogin;
			this.isReconnecting = false;
			this.socket = null;
			this.loggedIn = false;
			libs.Output.toMobile(this.player.id, "Reconnecting to existing session...");
			world.mud_handleInput(this.player.roomId, this.player.id, ["look"]);
			return;
		}

		if(this.loggedIn) {
			world.mud_playerQuit(this.player);
			this.socket = null;
			this.loggedIn = false;
		}
	}

	receivePlayer(input) {
		if(this.isReconnecting || !this.loggedIn) {
			return;
		}
		world.mud_handleInput(this.player.roomId, this.player.id, input);
	}

	setConnectionTimeout(time) {
		//this.socket.setTimeout(time);
	}

	logout() {
		this.socket.close();
	}

	reconnect(newLogin) {
		this.socket.close();
		this.isReconnecting = true;
		this.reconnectLogin = newLogin;
	}

	disconnect() {

	}
};