using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using WguApp.Controls;
using WguApp.Models;
using WguApp.Services;

namespace WguApp.Views;

public partial class HomePage : ContentPage
{

    private List<Term> _terms = [];
    
    public HomePage()
    {
        InitializeComponent();

        _ = RefreshTermList();
    }

    private async Task RefreshTermList()
    {
        _terms.Clear();
        _terms = await DatabaseService.GetAllTerms();
        
        TermButtonStack.Children.Clear();
        
        

        foreach (var term in _terms)
        {
            var btn = new CustomButton()
            {
                Text = term.Name,
                DateText = $"{DateOnly.FromDateTime(term.StartDate).ToString()} - {DateOnly.FromDateTime(term.EndDate).ToString()}"
            };
            
            TermButtonStack.Add(btn);

            btn.Clicked += (sender, e) =>
            {
                HandleTermButtonClick(term);
            };
        }
    }
    

    private async void AddTermButton_OnClicked(object? sender, EventArgs e)
    {
        var newTerm = new Term()
        {
            Name = "New Term",
            StartDate = DateTime.Today,
            EndDate = DateTime.Today.AddDays(30)
        };
        
        await DatabaseService.AddTerm(newTerm);

        await RefreshTermList();
    }

    protected override async void OnNavigatedTo(NavigatedToEventArgs args)
    {
        await RefreshTermList();
    }

    private void HandleTermButtonClick(Term term)
    {
        Navigation.PushAsync(new TermPage(term));
    }

    private void TestButton_OnClicked(object? sender, EventArgs e)
    {
        Navigation.PushAsync(new TestPage());
    }
}