From d5fbb55425ea36167e2981a12ea6b14337aa0d37 Mon Sep 17 00:00:00 2001
From: Natalia Portillo <claunia@claunia.com>
Date: Sat, 15 Nov 2025 04:48:11 +0000
Subject: [PATCH] Add companies list.

---
 Marechai.App/App.xaml.cs                      |   5 +
 .../Converters/FoundationDateConverter.cs     |  20 ++
 .../ViewModels/CompaniesViewModel.cs          | 189 ++++++++++++++++++
 .../Presentation/Views/CompaniesPage.xaml     | 104 ++++++++++
 Marechai.App/Services/CompaniesService.cs     |  77 +++++++
 5 files changed, 395 insertions(+)
 create mode 100644 Marechai.App/Presentation/Converters/FoundationDateConverter.cs
 create mode 100644 Marechai.App/Presentation/ViewModels/CompaniesViewModel.cs
 create mode 100644 Marechai.App/Presentation/Views/CompaniesPage.xaml
 create mode 100644 Marechai.App/Services/CompaniesService.cs

diff --git a/Marechai.App/App.xaml.cs b/Marechai.App/App.xaml.cs
index ec5b0a15..d2c04866 100644
--- a/Marechai.App/App.xaml.cs
+++ b/Marechai.App/App.xaml.cs
@@ -111,6 +111,8 @@ public partial class App : Application
                                                                  services.AddSingleton<ComputersViewModel>();
                                                                  services.AddSingleton<ConsolesService>();
                                                                  services.AddSingleton<ConsolesViewModel>();
+                                                                 services.AddSingleton<CompaniesService>();
+                                                                 services.AddSingleton<CompaniesViewModel>();
                                                                  services.AddSingleton<MachineViewViewModel>();
 
                                                                  services
@@ -145,6 +147,7 @@ public partial class App : Application
                        new ViewMap<ComputersListPage, ComputersListViewModel>(),
                        new ViewMap<ConsolesPage, ConsolesViewModel>(),
                        new ViewMap<ConsolesListPage, ConsolesListViewModel>(),
+                       new ViewMap<CompaniesPage, CompaniesViewModel>(),
                        new ViewMap<MachineViewPage, MachineViewViewModel>(),
                        new DataViewMap<SecondPage, SecondViewModel, Entity>());
 
@@ -179,6 +182,8 @@ public partial class App : Application
                                                                                views.FindByViewModel<
                                                                                    ConsolesListViewModel>())
                                                                        ]),
+                                                          new RouteMap("companies",
+                                                                       views.FindByViewModel<CompaniesViewModel>()),
                                                           new RouteMap("Second",
                                                                        views.FindByViewModel<SecondViewModel>())
                                                       ])
diff --git a/Marechai.App/Presentation/Converters/FoundationDateConverter.cs b/Marechai.App/Presentation/Converters/FoundationDateConverter.cs
new file mode 100644
index 00000000..071e76a8
--- /dev/null
+++ b/Marechai.App/Presentation/Converters/FoundationDateConverter.cs
@@ -0,0 +1,20 @@
+using System;
+using Microsoft.UI.Xaml.Data;
+
+namespace Marechai.App.Presentation.Converters;
+
+/// <summary>
+///     Converts DateTime to formatted foundation date string, returns empty if null
+/// </summary>
+public class FoundationDateConverter : IValueConverter
+{
+    public object Convert(object value, Type targetType, object parameter, string language)
+    {
+        if(value is DateTime dateTime) return dateTime.ToString("MMMM d, yyyy");
+
+        return string.Empty;
+    }
+
+    public object ConvertBack(object value, Type targetType, object parameter, string language) =>
+        throw new NotImplementedException();
+}
\ No newline at end of file
diff --git a/Marechai.App/Presentation/ViewModels/CompaniesViewModel.cs b/Marechai.App/Presentation/ViewModels/CompaniesViewModel.cs
new file mode 100644
index 00000000..80b41897
--- /dev/null
+++ b/Marechai.App/Presentation/ViewModels/CompaniesViewModel.cs
@@ -0,0 +1,189 @@
+#nullable enable
+
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows.Input;
+using Marechai.App.Helpers;
+using Marechai.App.Services;
+using Uno.Extensions.Navigation;
+
+namespace Marechai.App.Presentation.ViewModels;
+
+public partial class CompaniesViewModel : ObservableObject
+{
+    private readonly CompaniesService            _companiesService;
+    private readonly IStringLocalizer            _localizer;
+    private readonly ILogger<CompaniesViewModel> _logger;
+    private readonly INavigator                  _navigator;
+
+    private readonly List<CompanyListItem> _allCompanies = [];
+
+    [ObservableProperty]
+    private ObservableCollection<CompanyListItem> _companiesList = [];
+
+    [ObservableProperty]
+    private int _companyCount;
+
+    [ObservableProperty]
+    private string _companyCountText = string.Empty;
+
+    [ObservableProperty]
+    private string _errorMessage = string.Empty;
+
+    [ObservableProperty]
+    private bool _hasError;
+
+    [ObservableProperty]
+    private bool _isDataLoaded;
+
+    [ObservableProperty]
+    private bool _isLoading;
+
+    [ObservableProperty]
+    private string _searchQuery = string.Empty;
+
+    public CompaniesViewModel(CompaniesService            companiesService, IStringLocalizer localizer,
+                              ILogger<CompaniesViewModel> logger,           INavigator       navigator)
+    {
+        _companiesService        = companiesService;
+        _localizer               = localizer;
+        _logger                  = logger;
+        _navigator               = navigator;
+        LoadData                 = new AsyncRelayCommand(LoadDataAsync);
+        GoBackCommand            = new AsyncRelayCommand(GoBackAsync);
+        NavigateToCompanyCommand = new AsyncRelayCommand<CompanyListItem>(NavigateToCompanyAsync);
+    }
+
+    public IAsyncRelayCommand                  LoadData                 { get; }
+    public ICommand                            GoBackCommand            { get; }
+    public IAsyncRelayCommand<CompanyListItem> NavigateToCompanyCommand { get; }
+    public string                              Title                    { get; } = "Companies";
+
+    partial void OnSearchQueryChanged(string value)
+    {
+        // Automatically filter when SearchQuery changes
+        UpdateFilter(value);
+    }
+
+    /// <summary>
+    ///     Loads companies count and list from the API
+    /// </summary>
+    private async Task LoadDataAsync()
+    {
+        try
+        {
+            IsLoading    = true;
+            ErrorMessage = string.Empty;
+            HasError     = false;
+            IsDataLoaded = false;
+            CompaniesList.Clear();
+            _allCompanies.Clear();
+
+            // Load companies
+            List<CompanyDto> companies = await _companiesService.GetAllCompaniesAsync();
+
+            // Set count
+            CompanyCount     = companies.Count;
+            CompanyCountText = _localizer["Companies in the database"];
+
+            // Build the full list in memory
+            foreach(CompanyDto company in companies)
+            {
+                // Extract id from UntypedNode
+                int companyId = UntypedNodeExtractor.ExtractInt(company.Id);
+
+                // Convert DateTimeOffset? to DateTime?
+                DateTime? foundedDate = company.Founded?.DateTime;
+
+                _allCompanies.Add(new CompanyListItem
+                {
+                    Id             = companyId,
+                    Name           = company.Name ?? string.Empty,
+                    FoundationDate = foundedDate
+                });
+            }
+
+            // Apply current filter (will show all if SearchQuery is empty)
+            UpdateFilter(SearchQuery);
+
+            if(CompaniesList.Count == 0)
+            {
+                ErrorMessage = _localizer["No companies found"].Value;
+                HasError     = true;
+            }
+            else
+                IsDataLoaded = true;
+        }
+        catch(Exception ex)
+        {
+            _logger.LogError("Error loading companies data: {Exception}", ex.Message);
+            ErrorMessage = _localizer["Failed to load companies data. Please try again later."].Value;
+            HasError     = true;
+        }
+        finally
+        {
+            IsLoading = false;
+        }
+    }
+
+    /// <summary>
+    ///     Handles back navigation
+    /// </summary>
+    private async Task GoBackAsync()
+    {
+        await _navigator.NavigateViewModelAsync<MainViewModel>(this);
+    }
+
+    /// <summary>
+    ///     Navigates to company detail view
+    /// </summary>
+    private async Task NavigateToCompanyAsync(CompanyListItem? company)
+    {
+        if(company is null) return;
+
+        _logger.LogInformation("Navigating to company: {CompanyName} (ID: {CompanyId})", company.Name, company.Id);
+
+        // TODO: Implement company detail view
+        // For now, just log the navigation
+    }
+
+    /// <summary>
+    ///     Updates the filtered list based on search query
+    /// </summary>
+    private void UpdateFilter(string? query)
+    {
+        string lowerQuery = string.IsNullOrWhiteSpace(query) ? string.Empty : query.Trim().ToLowerInvariant();
+
+        CompaniesList.Clear();
+
+        if(string.IsNullOrEmpty(lowerQuery))
+        {
+            // No filter, show all companies
+            foreach(CompanyListItem company in _allCompanies) CompaniesList.Add(company);
+        }
+        else
+        {
+            // Filter companies by name (case-insensitive)
+            var filtered = _allCompanies.Where(c => c.Name.Contains(lowerQuery, StringComparison.OrdinalIgnoreCase))
+                                        .ToList();
+
+            foreach(CompanyListItem company in filtered) CompaniesList.Add(company);
+        }
+    }
+}
+
+/// <summary>
+///     Data model for a company in the list
+/// </summary>
+public class CompanyListItem
+{
+    public int       Id             { get; set; }
+    public string    Name           { get; set; } = string.Empty;
+    public DateTime? FoundationDate { get; set; }
+
+    public string FoundationDateDisplay =>
+        FoundationDate.HasValue ? FoundationDate.Value.ToString("MMMM d, yyyy") : string.Empty;
+}
\ No newline at end of file
diff --git a/Marechai.App/Presentation/Views/CompaniesPage.xaml b/Marechai.App/Presentation/Views/CompaniesPage.xaml
new file mode 100644
index 00000000..801b4dee
--- /dev/null
+++ b/Marechai.App/Presentation/Views/CompaniesPage.xaml
@@ -0,0 +1,104 @@
+<?xml version="1.0"
+      encoding="utf-8"?>
+
+<Page x:Class="Marechai.App.Presentation.Views.CompaniesPage"
+      x:Name="PageRoot"
+      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+      xmlns:utu="using:Uno.Toolkit.UI"
+      NavigationCacheMode="Required"
+      Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
+
+    <Grid utu:SafeArea.Insets="VisibleBounds">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto" /> <RowDefinition Height="*" />
+        </Grid.RowDefinitions>
+
+        <!-- Header -->
+        <utu:NavigationBar Grid.Row="0"
+                           Content="{Binding Path=Title}">
+            <utu:NavigationBar.MainCommand>
+                <AppBarButton Icon="Back"
+                              Label="Back"
+                              Command="{Binding GoBackCommand}"
+                              AutomationProperties.Name="Go back" />
+            </utu:NavigationBar.MainCommand>
+        </utu:NavigationBar>
+
+        <!-- Content -->
+        <ScrollViewer Grid.Row="1">
+            <StackPanel Padding="16"
+                        Spacing="16">
+
+                <!-- Company Count Display -->
+                <StackPanel HorizontalAlignment="Center"
+                            Spacing="8">
+                    <TextBlock Text="{Binding CompanyCountText}"
+                               TextAlignment="Center"
+                               FontSize="18"
+                               FontWeight="SemiBold"
+                               Foreground="{ThemeResource SystemBaseMediumColor}" />
+                    <TextBlock Text="{Binding CompanyCount}"
+                               TextAlignment="Center"
+                               FontSize="48"
+                               FontWeight="Bold"
+                               Foreground="{ThemeResource SystemAccentColor}" />
+                </StackPanel>
+
+                <!-- Search Box -->
+                <AutoSuggestBox x:Name="CompaniesSearchBox"
+                                HorizontalAlignment="Stretch"
+                                PlaceholderText="Search companies..."
+                                Text="{Binding SearchQuery, Mode=TwoWay}"
+                                QuerySubmitted="OnSearchQuerySubmitted"
+                                TextChanged="OnSearchTextChanged">
+                    <AutoSuggestBox.ItemTemplate>
+                        <DataTemplate>
+                            <TextBlock Text="{Binding Name}" />
+                        </DataTemplate>
+                    </AutoSuggestBox.ItemTemplate>
+                </AutoSuggestBox>
+
+                <!-- Loading State -->
+                <StackPanel Visibility="{Binding IsLoading}"
+                            VerticalAlignment="Center"
+                            HorizontalAlignment="Center"
+                            Padding="32"
+                            Spacing="16">
+                    <ProgressRing IsActive="True"
+                                  IsIndeterminate="True"
+                                  Height="48"
+                                  Width="48" />
+                    <TextBlock Text="Loading..."
+                               TextAlignment="Center"
+                               FontSize="14" />
+                </StackPanel>
+
+                <!-- Error State -->
+                <StackPanel Visibility="{Binding HasError}"
+                            Padding="16"
+                            Background="{ThemeResource SystemErrorBackgroundColor}"
+                            CornerRadius="8"
+                            Spacing="8">
+                    <TextBlock Text="Error"
+                               FontWeight="Bold"
+                               Foreground="{ThemeResource SystemErrorTextForegroundColor}" />
+                    <TextBlock Text="{Binding ErrorMessage}"
+                               Foreground="{ThemeResource SystemErrorTextForegroundColor}"
+                               TextWrapping="Wrap" />
+                </StackPanel>
+
+                <!-- Companies List -->
+                <StackPanel Visibility="{Binding IsDataLoaded}"
+                            Spacing="8">
+                    <ItemsRepeater ItemsSource="{Binding CompaniesList}">
+                        <ItemsRepeater.ItemTemplate></ItemsRepeater.ItemTemplate>
+                    </ItemsRepeater>
+                </StackPanel>
+
+            </StackPanel>
+        </ScrollViewer>
+
+    </Grid>
+
+</Page>
\ No newline at end of file
diff --git a/Marechai.App/Services/CompaniesService.cs b/Marechai.App/Services/CompaniesService.cs
new file mode 100644
index 00000000..2574379c
--- /dev/null
+++ b/Marechai.App/Services/CompaniesService.cs
@@ -0,0 +1,77 @@
+#nullable enable
+
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace Marechai.App.Services;
+
+/// <summary>
+///     Service for fetching companies data from the API
+/// </summary>
+public class CompaniesService
+{
+    private readonly ApiClient                 _apiClient;
+    private readonly ILogger<CompaniesService> _logger;
+
+    public CompaniesService(ApiClient apiClient, ILogger<CompaniesService> logger)
+    {
+        _apiClient = apiClient;
+        _logger    = logger;
+    }
+
+    /// <summary>
+    ///     Gets all companies
+    /// </summary>
+    public async Task<List<CompanyDto>> GetAllCompaniesAsync()
+    {
+        try
+        {
+            _logger.LogInformation("Fetching all companies from API");
+
+            List<CompanyDto>? companies = await _apiClient.Companies.GetAsync();
+
+            if(companies == null) return [];
+
+            _logger.LogInformation("Successfully fetched {Count} total companies", companies.Count);
+
+            return companies;
+        }
+        catch(Exception ex)
+        {
+            _logger.LogError(ex, "Error fetching all companies from API");
+
+            return [];
+        }
+    }
+
+    /// <summary>
+    ///     Gets a single company by ID
+    /// </summary>
+    public async Task<CompanyDto?> GetCompanyByIdAsync(int companyId)
+    {
+        try
+        {
+            _logger.LogInformation("Fetching company {CompanyId} from API", companyId);
+
+            CompanyDto? company = await _apiClient.Companies[companyId].GetAsync();
+
+            if(company == null)
+            {
+                _logger.LogWarning("Company {CompanyId} not found", companyId);
+
+                return null;
+            }
+
+            _logger.LogInformation("Successfully fetched company {CompanyId}: {CompanyName}", companyId, company.Name);
+
+            return company;
+        }
+        catch(Exception ex)
+        {
+            _logger.LogError(ex, "Error fetching company {CompanyId} from API", companyId);
+
+            return null;
+        }
+    }
+}
\ No newline at end of file