Adding final project to dev branch

WguApp/Views/TermPage.xaml.cs

@@ -0,0 +1,147 @@
+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 TermPage : ContentPage
+{
+
+    private Term _term;
+
+    private List<Course> _courses = [];
+    
+    public TermPage(Term term)
+    {
+        InitializeComponent();
+        
+        _term = term;
+        
+        Title = string.IsNullOrWhiteSpace(_term.Name) ? "Term" : _term.Name;
+        TitleEntry.Text = _term.Name;
+        
+        StartDatePicker.Date = _term.StartDate;
+        EndDatePicker.Date = _term.EndDate;
+    }
+
+    private async Task RefreshCourseList()
+    {
+        _courses.Clear();
+        _courses = await DatabaseService.GetCoursesByTermId(_term.Id);
+        
+        CourseButtonStack.Children.Clear();
+
+        foreach (var course in _courses)
+        {
+            var btn = new CustomButton()
+            {
+                Text = course.Name,
+                DateText = $"{DateOnly.FromDateTime(course.StartDate).ToString()} - {DateOnly.FromDateTime(course.EndDate).ToString()}"
+            };
+            
+            CourseButtonStack.Add(btn);
+
+            btn.Clicked += (sender, e) =>
+            {
+                HandleCourseButtonClick(course);
+            };
+        }
+    }
+    
+    protected override async void OnNavigatedTo(NavigatedToEventArgs args)
+    {
+        try
+        {
+            await RefreshCourseList();
+        }
+        catch (Exception e)
+        {
+            await DisplayAlert("Error", e.Message, "Ok");
+        }
+    }
+
+    private async void HandleCourseButtonClick(Course course)
+    {
+        await Navigation.PushAsync(new CoursePage(course));
+    }
+
+    private async void SaveButton_OnClicked(object? sender, EventArgs e)
+    {
+        var validationResult = ValidateFields();
+
+        if (!validationResult.result)
+        {
+            await DisplayAlert("Validation Error", validationResult.msg, "Ok");
+            return;
+        }
+        
+        _term.Name = TitleEntry.Text;
+        _term.StartDate = StartDatePicker.Date;
+        _term.EndDate = EndDatePicker.Date;
+        
+        var updateResult = await DatabaseService.UpdateTerm(_term);
+
+        if (updateResult)
+        {
+            await DisplayAlert("Info", $"{_term.Name} Saved!", "Ok");
+        }
+        else
+        {
+            await DisplayAlert("Error", "Could not save term", "Ok");
+        }
+
+        Title = _term.Name;
+    }
+
+    private (string msg, bool result) ValidateFields()
+    {
+        var message = string.Empty;
+        
+        if (string.IsNullOrWhiteSpace(TitleEntry.Text)) message += "Title cannot be blank\n";
+        if (StartDatePicker.Date > EndDatePicker.Date) message += "Start Date cannot be after the End Date\n";
+
+        return string.IsNullOrWhiteSpace(message) ? (message, true) : (message, false);
+    }
+
+    private async void DeleteButton_OnClicked(object? sender, EventArgs e)
+    {
+        var result = await DisplayAlert("Delete Term", $"Do you really want to delete '{_term.Name}'? This action cannot be undone.", "Delete", "Cancel");
+        if (!result) return;
+        
+        await DatabaseService.DeleteTerm(_term);
+        await Navigation.PopAsync();
+    }
+
+    private async void AddCourseButton_OnClicked(object? sender, EventArgs e)
+    {
+        if (_courses.Count >= 6)
+        {
+            await DisplayAlert("Info", $"Cannot add more than 6 courses per term", "Ok");
+            return;
+        }
+        
+        var course = new Course()
+        {
+            TermId = _term.Id,
+            Name = "New Course",
+            StartDate = DateTime.Today,
+            EndDate = DateTime.Today.AddDays(30),
+            InstructorName = "",
+            InstructorEmail = "",
+            InstructorPhone = "",
+            StartNotifCheck = false,
+            EndNotifCheck = false,
+            Status = CourseStatus.Planned,
+            Notes = ""
+        };
+        
+        await DatabaseService.AddCourse(course);
+
+        await RefreshCourseList();
+    }
+}