using Android.Widget;
using Plugin.AudioRecorder;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using Xamarin.Forms;
using Xamarin.Forms.PlatformConfiguration;
using Xamarin.Forms.Xaml;

namespace MST.MobileApp.Views
{
    [XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class RecordAudioPage : ContentPage
    {
        AudioRecorderService recorder { get; set; }
        AudioPlayer player { get; set; }
        string path { get; set; }

        public RecordAudioPage()
        {
            InitializeComponent();

            
            
            recorder = new AudioRecorderService
            {
                //FilePath = System.Environment.GetFolderPath(System.Environment.SpecialFolder.ApplicationData),
                //StopRecordingOnSilence = true, //will stop recording after 2 seconds (default)
                //StopRecordingAfterTimeout = true,  //stop recording after a max timeout (defined below)
                TotalAudioTimeout = TimeSpan.FromSeconds(15) //audio will stop recording after 15 seconds
            };

            player = new AudioPlayer();
            player.FinishedPlaying += Player_FinishedPlaying;
        }

        public async void Record_Clicked(object sender, EventArgs e)
        {
            await RecordAudio();
        }

        public async Task RecordAudio()
        {
            try
            {
                if (!recorder.IsRecording) //Record button clicked
                {
                    //recorder.StopRecordingOnSilence = !TimeoutSwitch.IsToggled;

                    RecordButton.IsEnabled = false;
                    PlayButton.IsEnabled = false;

                    //start recording audio
                    var audioRecordTask = await recorder.StartRecording();

                    RecordButton.Text = "Stop Recording";
                    RecordButton.IsEnabled = true;

                    var audioFile = await audioRecordTask;
                    RecordButton.Text = "Record";

                    if (audioFile != null) //non-null audioFile indicates audio was successfully recorded
                    {
                        path = audioFile;
                        PlayButton.IsEnabled = true;
                    }
                }
                else //Stop button clicked
                {
                    RecordButton.IsEnabled = false;

                    //stop the recording...
                    await recorder.StopRecording();

                    //Get the path to save the audio to Application data folder
                    string path1 = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
                    //string filename = DateTime.Now.ToShortDateString().Trim().Replace("/", "") +
                    //    DateTime.Now.ToShortTimeString().Trim().Replace(":", "").Replace("AM", "");
                    string fileName = string.Format("audio_{0}.wav", DateTime.Now.ToString("yyyyMMddHHmmss"));
                    string filePath = Path.Combine(path1, "audio_" + fileName);

                    //Create a file and write the stream into it.
                    FileStream audioStreamCache = System.IO.File.Open(recorder.FilePath, FileMode.Open, FileAccess.Read, FileShare.Read);
                    FileStream fileStream = File.Open(filePath, FileMode.Create);
                    audioStreamCache.Position = 0;
                    //copy the file from cache location to application data folder
                    audioStreamCache.CopyTo(fileStream);
                    audioStreamCache.Dispose();
                    audioStreamCache.Close();
                    fileStream.Flush();
                    fileStream.Close();

                    path = filePath;
                    RecordButton.IsEnabled = true;
                }
            }
            catch (Exception ex)
            {
                //blow up the app!
                //Toast.MakeText(Android.App.Application.Context, ex.Message, ToastLength.Long).Show();
            }
        }

        void Play_Clicked(object sender, EventArgs e)
        {
            PlayAudio();
        }

        void PlayAudio()
        {
            var filePath = recorder.GetAudioFilePath();
            var fileStream = recorder.GetAudioFileStream();
            try
            {
                if (path != null)
                {
                    PlayButton.IsEnabled = false;
                    RecordButton.IsEnabled = false;
                    
                    player.Play(path);
                }
            }
            catch (Exception ex)
            {
                //Toast.MakeText(Android.App.Application.Context, ex.Message, ToastLength.Short).Show();
            }
        }

        void Player_FinishedPlaying(object sender, EventArgs e)
        {
            PlayButton.IsEnabled = true;
            RecordButton.IsEnabled = true;
        }

        private async void BtnClose_Clicked(object sender, EventArgs e)
        {
            await Navigation.PopModalAsync();
        }
    }
}