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/// <reference path="node.d.ts" />

/// <reference path="session.ts" />

namespace ts.server {

var nodeproto: typeof NodeJS._debugger = require('_debugger');

var readline: NodeJS.ReadLine = require('readline');

var path: NodeJS.Path = require('path');

var fs: typeof NodeJS.fs = require('fs');

var rl = readline.createInterface({

input: process.stdin,

output: process.stdout,

terminal: false,

});

class Logger implements ts.server.Logger {

fd = -1;

seq = 0;

inGroup = false;

firstInGroup = true;

constructor(public logFilename: string, public level: string) {

}

static padStringRight(str: string, padding: string) {

return (str + padding).slice(0, padding.length);

}

close() {

if (this.fd >= 0) {

fs.close(this.fd);

}

}

perftrc(s: string) {

this.msg(s, "Perf");

}

info(s: string) {

this.msg(s, "Info");

}

startGroup() {

this.inGroup = true;

this.firstInGroup = true;

}

endGroup() {

this.inGroup = false;

this.seq++;

this.firstInGroup = true;

}

loggingEnabled() {

return !!this.logFilename;

}

isVerbose() {

return this.loggingEnabled() && (this.level == "verbose");

}

msg(s: string, type = "Err") {

if (this.fd < 0) {

if (this.logFilename) {

this.fd = fs.openSync(this.logFilename, "w");

}

}

if (this.fd >= 0) {

s = s + "\n";

var prefix = Logger.padStringRight(type + " " + this.seq.toString(), " ");

if (this.firstInGroup) {

s = prefix + s;

this.firstInGroup = false;

}

if (!this.inGroup) {

this.seq++;

this.firstInGroup = true;

}

var buf = new Buffer(s);

fs.writeSync(this.fd, buf, 0, buf.length, null);

}

}

}

class IOSession extends Session {

constructor(host: ServerHost, logger: ts.server.Logger) {

super(host, Buffer.byteLength, process.hrtime, logger);

}

exit() {

this.projectService.log("Exiting...","Info");

this.projectService.closeLog();

process.exit(0);

}

listen() {

rl.on('line',(input: string) => {

var message = input.trim();

this.onMessage(message);

});

rl.on('close',() => {

this.exit();

});

}

}

interface LogOptions {

file?: string;

detailLevel?: string;

}

function parseLoggingEnvironmentString(logEnvStr: string): LogOptions {

var logEnv: LogOptions = {};

var args = logEnvStr.split(' ');

for (var i = 0, len = args.length; i < (len - 1); i += 2) {

var option = args[i];

var value = args[i + 1];

if (option && value) {

switch (option) {

case "-file":

logEnv.file = value;

break;

case "-level":

logEnv.detailLevel = value;

break;

}

}

}

return logEnv;

}

// TSS_LOG "{ level: "normal | verbose | terse", file?: string}"

function createLoggerFromEnv() {

var fileName: string = undefined;

var detailLevel = "normal";

var logEnvStr = process.env["TSS_LOG"];

if (logEnvStr) {

var logEnv = parseLoggingEnvironmentString(logEnvStr);

if (logEnv.file) {

fileName = logEnv.file;

}

else {

fileName = __dirname + "/.log" + process.pid.toString();

}

if (logEnv.detailLevel) {

detailLevel = logEnv.detailLevel;

}

}

return new Logger(fileName, detailLevel);

}

// This places log file in the directory containing editorServices.js

// TODO: check that this location is writable

var logger = createLoggerFromEnv();

var ioSession = new IOSession(ts.sys, logger);

process.on('uncaughtException', function(err: Error) {

ioSession.logError(err, "unknown");

});

// Start listening

ioSession.listen();

}