using System;
using System.Linq;
using Comal.Classes;
using InABox.Core;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;

namespace PRS.Mobile
{
    [XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class SiteForms
    {
        private JobFormModel _model;
        
        public SiteForms(JobShell job) : base(job)
        {
            _model = new JobFormModel(App.Data, () => new Filter<JobForm>(x => x.Parent.ID).IsEqualTo(Job.ID));
            InitializeComponent();
            ProgressVisible = true;
            Title = job?.DisplayName ?? "Site Forms";
            _forms.DataModel = _model;
            _forms.AppliesTo = "Job";
            _forms.Property = model => _model.Items.OfType<IDigitalFormInstanceShell>().ToArray();
            RefreshData(false, true);
        }

        private void RefreshData(bool force, bool async)
        {
            if (async)
                _model.Refresh(force, () => Device.BeginInvokeOnMainThread(RefreshScreen));
            else
            {
                _model.Refresh(force);
                RefreshScreen();
            }
        }

        private void RefreshScreen()
        {
            _forms.Refresh();
            ProgressVisible = false;
        }
        
        private void AddForm_Clicked(object sender, EventArgs e)
        {
            var selector = new NewForms() { AppliesTo = _forms.AppliesTo };
            selector.ItemSelected += CreateNewForm;
            Navigation.PushAsync(selector);
        }

        private async void CreateNewForm(object sender, NewFormSelectedArgs args)
        {
            var instance = _model.AddItem();
            instance.ParentID = Job.ID;
            instance.FormID = args.Form.ID;
            instance.FormCode = args.Form.Code;
            instance.FormDescription = args.Form.Description;
            instance.Save("Created on Mobile Device");
            Device.BeginInvokeOnMainThread(() =>
            {
                _forms.RefreshData(false,false);
                _forms.EditForm<Job,JobLink,JobForm>(instance,Job.Entity);
            });

        }

        private void _forms_OnFormTapped(object sender, ExistingFormTappedEventArgs args)
        {
            ProgressVisible = true;
            _forms.EditForm<Job, JobLink, JobForm>(args.Shell, Job.Entity);
            ProgressVisible = false;
        }
    }
}