using Soulseek;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Threading.Tasks;
using System.Windows.Input;
using Xamarin.Forms;

namespace XSeek.ViewModels
{

    public class SearchViewModel : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;
        public ICommand SearchCommand { get; }
        private string st;
        public string SearchText
        {
            get
            {
                return st;
            }
            set
            {
                if (st != value)
                {
                    st = value;
                    OnPropertyChanged("SearchText");
                }
            }
        }
        public Soulseek.Search SearchResponses {get; set;}
        public ObservableCollection<SearchResponse> ResponseResponses { get; set; }

        public SearchViewModel()
        {
            var searchProgress = new Progress<Soulseek.Search>(s => UpdateSearchResults(s));
            var responseProgress = new Progress<IReadOnlyCollection<SearchResponse>>(r => UpdateResponseResults(r));
            SearchCommand = new Command(async () => await SearchSoulseekAsync(SearchText, App.AppClient, searchProgress, responseProgress));
        }
        private void UpdateSearchResults(Soulseek.Search s)
        {
            SearchResponses = s;
        }
        private void UpdateResponseResults(IReadOnlyCollection<SearchResponse> r)
        {
            ResponseResponses = (ObservableCollection<SearchResponse>)r;
        }


        private async Task SearchSoulseekAsync(string SearchText, SoulseekClient AppClient, IProgress<Soulseek.Search> searchProgress, IProgress<IReadOnlyCollection<SearchResponse>> responseProgress)
        {
            (Soulseek.Search SearchRes, IReadOnlyCollection<SearchResponse> ResponseRes) responses = await AppClient.SearchAsync(SearchQuery.FromText(SearchText));
            //return (ObservableCollection<SearchResponse>)responses.ResponseRes;
            searchProgress.Report(responses.SearchRes);
            responseProgress.Report(responses.ResponseRes);
        }

        //var responses = await client.SearchAsync(SearchQuery.FromText("Mariya Takeuchi"));
        protected void OnPropertyChanged(string propName)
        {
            if (PropertyChanged != null)
                PropertyChanged(this, new PropertyChangedEventArgs(propName));
        }
    }
}