module.exports = (function() {
    let isEmpty = true
    let scriptPath = {
        scriptPath: './pyforJS'
    };
    var library = English.library()
    .given("The player has opened and has no advertisement in playList and train is in station",function(){
        return new Promise(function(resolve,reject){
            launch.app.webContents.send('playProgramRequest',undefined,0)
            var pyshell = new PythonShell('detect_arrive.py',scriptPath);
            pyshell.on('message', function (result) {
                if(result){
                    let _emptyProgramTable = utils.getProgramTable()
                    for(var index in _emptyProgramTable) {
                        if(_emptyProgramTable[index].length !=0) assert.fail('there is already a program')
                    }
                    isEmpty = true
                    resolve()
                }
            })
        })
    })
    .when("Train depart the station over $NUM seconds", function(number) {
        let seconds = parseInt(number*1000)
        return new Promise(function(resolve, reject) {
            setTimeout(function() {
                var pyshell = new PythonShell('detect_depart.py',scriptPath);
                pyshell.on('message', function (result) {
                    if(result) {
                        setTimeout(() => {
                            if(isEmpty){
                                launch.app.webContents.send('playProgramRequest',undefined,0)
                            }
                            else{
                                launch.app.webContents.send('playProgramRequest',program,0)
                            }
                            resolve(result)
                        }, seconds);

                        assert(true)
                    }
                    else {
                        reject(result)
                        assert.fail()
                    }
                });
            }, 100);
        })
    })
    .then("The player should start to play", function() {
        return new Promise(function(resolve,reject){
            setTimeout(() => {
                resolve()
            }, 5000);
        })
        return launch.app.client.getAttribute('video','src')
        .then(result=>{
            if(result === ''){
                assert.fail('the program does not start')
            }
        })
    })
    .then("The player should stay paused",function(){
        return new Promise(function(resolve,reject){
            setTimeout(() => {
                resolve()
            }, 5000);
        })
        return launch.app.client.getAttribute('video','src')
        .then(result=>{
            if(result !== ''){
                assert.fail('the player should stay stopped')
            }
        })
    })
    return library;
})();