const path = require('path');
const fs = require('fs');
const fse = require('fs-extra');
const os = require('os');
const gunzip = require('gulp-gunzip');
const untar = require('gulp-untar');
const through = require('through2');
const gulp = require('gulp');
const gutil = require('gulp-util');
const Sdk = require('./sdk');
const exec = require('./exec');
const col = gutil.colors;


class FlashPlayer extends Sdk {

    constructor(version) {
        super(FlashPlayer.ID, version || FlashPlayer.VERSION);
    }

    playerPath(debug) {
        const v = this.version.split('.');
        const dir = `${v[0]}_${v[1]}_r${v[2]}_${v[3]}`;
        return `${this.path}/${dir}${debug ? '_debug': ''}`;
    }

    prepare() {
        let p = super.prepare();
        if (!this.prepared && os.type() === 'Linux') {
            p = p.then(() => {
                let arch = null;
                if (os.arch() === 'ia32') { arch = 'i386'}
                if (os.arch() === 'x64') { arch = 'x86_64'}

                const extract = (debug) => {
                    const v = this.version.split('.');
                    const playerPath = this.playerPath(debug);
                    const archive = `${playerPath}/flashplayer${v[0]}_${v[1]}r${v[2]}_${v[3]}_linux_sa${debug ? '_debug' : ''}.${arch}.tar.gz`;
                    return gulp.src(archive)
                            .pipe(gunzip()).pipe(untar())
                            .pipe(gulp.dest(playerPath));
                };

                return new Promise((success, fail) => {
                    extract().on('end', () => {
                        extract(true).on('end', success).on('error', fail)
                    }).on('error', fail);
                })
            })
        }
        return p;
    }

    get prepared() {
        try {
            return fs.existsSync(`${this.flashPlayerBin()}`);
        } catch (e) {
            return false;
        }
    }

    get link() {
        return `https://fpdownload.macromedia.com/pub/flashplayer/installers/archive/fp_${this.version}_archive.zip`;
    }

    flashPlayerBin(debug) {
        if (os.type() === 'Windows_NT') {
            const v = this.version.split('.');
            const playerName = `flashplayer${v[0]}_${v[1]}r${v[2]}_${v[3]}_win_sa${debug ? '_debug' : ''}.exe`;
            return `${this.playerPath(debug)}/${playerName}`;
        } else if (os.type() === 'Linux') {
            const binPath = `${this.playerPath(debug)}/${debug ? 'flashplayerdebugger': 'flashplayer'}`;
            fs.chmodSync(binPath, 0o755);
            return binPath;
        } else {
            throw `Unsupported os '${os.type()}'`;
        }
    }

    static get flashPlayerDir() {
        if (os.type() === 'Windows_NT') {
            return `${process.env.APPDATA}/Macromedia/Flash Player`;
        } else if (os.type() === 'Linux') {
            return `${os.homedir()}/.macromedia/Flash_Player`;
        }
    }

    static get log() {
        return `${this.flashPlayerDir}/Logs/flashlog.txt`;
    }

    static enableLog() {
        const filename = `${os.homedir()}/mm.cfg`;
        const value = 'TraceOutputFileEnable=1';
        if (fs.exists(filename)) {
            const data = fs.readFileSync(filename);
            if (data.indexOf(value) === -1) {
                fs.appendFileSync(filename, `${value}\n`);
            }
        } else {
            fs.writeFileSync(filename, `${value}\n`);
        }
    }

    static trust(value) {
        const filename = `${this.flashPlayerDir}/#Security/FlashPlayerTrust/gulp.cfg`;
        if (fs.exists(filename)) {
            const data = fs.readFileSync(filename);
            if (data.indexOf(value) === -1) {
                fs.appendFileSync(filename, `${value}\n`);
            }
        } else {
            if (!fs.exists(path.dirname(filename))) {
                fse.ensureDirSync(path.dirname(filename));
            }
            fs.writeFileSync(filename, `${value}\n`);
        }
    }

    run(debug) {
        let stream = null;
        const bufferContents = (file, enc, callback) => {
            gutil.log(this.tag, col.cyan("run"), col.magenta(file.path));
            FlashPlayer.trust(file.path);
            FlashPlayer.enableLog();
            exec('.', [this.flashPlayerBin(debug), file.path].join(' ')).then(() => {
                stream.emit('end');
                //callback();
            }).catch((error) => {
                stream.emit('end');
                //callback();
                stream.emit('error', error);
            });
            //stream.push(file);
            // ToDo: watch when file is exists
            // or create log file in FlashPlayer.enableLog()?
            stream.push(new gutil.File({
                path: FlashPlayer.log
            }));
        };

        return stream = through.obj(bufferContents);
    }
}

FlashPlayer.ID = "flashplayer";

FlashPlayer.VERSION_11_2_202_644 = '11.2.202.644';
FlashPlayer.VERSION_11 = FlashPlayer.VERSION_11_2_202_644;

FlashPlayer.VERSION_24_0_0_186 = '24.0.0.186';
FlashPlayer.VERSION_24_0_0_194 = '24.0.0.194';
FlashPlayer.VERSION_24_0_0_221 = '24.0.0.221';
FlashPlayer.VERSION_24 = FlashPlayer.VERSION_24_0_0_221;

FlashPlayer.VERSION_25_0_0_127 = '25.0.0.127';
FlashPlayer.VERSION_25_0_0_148 = '25.0.0.148';
FlashPlayer.VERSION_25_0_0_163 = '25.0.0.163';
FlashPlayer.VERSION_25_0_0_117 = '25.0.0.171';
FlashPlayer.VERSION_25 = FlashPlayer.VERSION_25_0_0_117;

FlashPlayer.VERSION_26_0_0_131 = '26.0.0.131';
FlashPlayer.VERSION_26 = FlashPlayer.VERSION_26_0_0_131;

if (os.type() === 'Linux' && os.arch() === 'ia32') { //Linux i386
    FlashPlayer.VERSION = FlashPlayer.VERSION_11;
} else {
    FlashPlayer.VERSION = FlashPlayer.VERSION_26;
}

module.exports = FlashPlayer;