chapter-organizer/WebApp/Components/Pages/Home.razor

@page "/"
@attribute [Authorize]
@using Microsoft.EntityFrameworkCore
@using WebApp.Models
@inject IConfiguration Configuration
@inject AppDbContext Context

<PageTitle>@Configuration["ChapterSettings:Name"] - TSA Chapter Organizer</PageTitle>

<MudPaper Elevation="0" Class="mb-6">
    <div class="d-flex flex-column align-center text-center mb-4">
        <MudImage Fluid="true" Src="TCO_Title.png" Alt="TSA Chapter Organizer" Class="mb-4" Style="width: 100%; max-width: 600px; height: auto;" />
        <MudHidden Breakpoint="Breakpoint.SmAndDown">
            <MudText Typo="Typo.h3" Class="mb-2">
                <strong>@Configuration["ChapterSettings:Name"]</strong>
            </MudText>
        </MudHidden>
        <MudHidden Breakpoint="Breakpoint.MdAndUp">
            <MudText Typo="Typo.h5" Class="mb-2">
                <strong>@Configuration["ChapterSettings:Name"]</strong>
            </MudText>
        </MudHidden>
        <MudText Typo="Typo.h6" Color="Color.Secondary">
            @Configuration["ChapterSettings:CompetitionYear"] Competition Year
        </MudText>
    </div>
</MudPaper>

@if (!_hasStudents)
{
    <!-- Getting Started: No students yet -->
    <MudPaper Elevation="0" Class="mb-4">
        <MudText Typo="Typo.h4" Color="Color.Primary">Getting Started</MudText>
        <MudText Typo="Typo.body2" Color="Color.Secondary">Add your chapter's students to begin</MudText>
    </MudPaper>
    <MudGrid>
        <DashboardCard Icon="@AppIcons.Student"
                       Title="Students"
                       Count="@_studentCount"
                       Subtitle="Add Students"
                       NavigateUrl="/students"
                       Emphasized="true">
            <MudText Typo="Typo.caption" Class="mt-2">Import or add your chapter roster</MudText>
        </DashboardCard>

        <DashboardCard Icon="@AppIcons.Events"
                       Title="Events"
                       Count="@_eventCount"
                       Subtitle="Total Events"
                       Caption="@($"{_teamEventsCount} Team | {_individualEventsCount} Individual")"
                       NavigateUrl="/events" />
    </MudGrid>
}
else if (!_hasTeams)
{
    <!-- Team Building: Students exist but no teams yet -->
    <MudPaper Elevation="0" Class="mb-4">
        <MudText Typo="Typo.h4" Color="Color.Primary">Team Building</MudText>
        <MudText Typo="Typo.body2" Color="Color.Secondary">Collect event rankings and build your teams</MudText>
    </MudPaper>
    <MudGrid>
        <DashboardCard Icon="@AppIcons.EventRank"
                       Title="Event Ranking"
                       Caption="Collect student event preferences"
                       NavigateUrl="/students/event-ranking"
                       Emphasized="true"/>

        <DashboardCard Icon="@AppIcons.TeamAssignment"
                       Title="Team Assignment"
                       Caption="Build optimal teams"
                       NavigateUrl="/teams/assignment"
                       Emphasized="true"/>
    </MudGrid>

    <MudPaper Elevation="0" Class="my-4">
        <MudText Typo="Typo.h4">Chapter Data</MudText>
    </MudPaper>
    <MudGrid>
        <DashboardCard Icon="@AppIcons.Student"
                       Title="Students"
                       Count="@_studentCount"
                       Subtitle="Active Students"
                       NavigateUrl="/students">
            @if (!string.IsNullOrEmpty(_gradeDistribution) && _gradeDistribution != "No students yet")
            {
                <MudStack>
                    <MudText Typo="Typo.caption">@((MarkupString)_gradeDistribution)</MudText>
                </MudStack>
            }
        </DashboardCard>

        <DashboardCard Icon="@AppIcons.Events"
                       Title="Events"
                       Count="@_eventCount"
                       Subtitle="Total Events"
                       Caption="@($"{_teamEventsCount} Team | {_individualEventsCount} Individual")"
                       NavigateUrl="/events" />
    </MudGrid>
}
else
{
    <!-- Normal view: Students and teams exist -->
    <MudPaper Elevation="0" Class="mb-4">
        <MudText Typo="Typo.h4">Scheduling</MudText>
    </MudPaper>
    <MudGrid>
        <DashboardCard Icon="@AppIcons.Scheduler"
                       Title="Meeting Schedule"
                       Caption="Optimize meeting times"
                       NavigateUrl="/meeting-schedule"/>

        <DashboardCard Icon="@Icons.Material.Filled.Event"
                       Title="Event Calendar"
                       Caption="Conference schedules"
                       NavigateUrl="/calendar"/>
    </MudGrid>

    <MudPaper Elevation="0" Class="my-4">
        <MudText Typo="Typo.h4">Teams & Registration</MudText>
    </MudPaper>
    <MudGrid>
        <DashboardCard Icon="@Icons.Material.Filled.AppRegistration"
                       Title="Registration"
                       Caption="View student registrations"
                       NavigateUrl="/students/teams"/>

        <DashboardCard Icon="@AppIcons.Teams"
                       Title="Teams"
                       Count="@_teamCount"
                       Subtitle="Total Teams"
                       Caption="@($"{_groupTeamsCount} Team | {_individualTeamsCount} Individual")"
                       NavigateUrl="/teams" />
    </MudGrid>

    <MudPaper Elevation="0" Class="my-4">
        <MudText Typo="Typo.h4">Team Building</MudText>
    </MudPaper>
    <MudGrid>
        <DashboardCard Icon="@AppIcons.EventRank"
                       Title="Event Ranking"
                       Caption="Student event preferences"
                       NavigateUrl="/students/event-ranking"/>

        <DashboardCard Icon="@AppIcons.TeamAssignment"
                       Title="Team Assignment"
                       Caption="Build optimal teams"
                       NavigateUrl="/teams/assignment"/>
    </MudGrid>

    <MudPaper Elevation="0" Class="my-4">
        <MudText Typo="Typo.h4">Chapter Data</MudText>
    </MudPaper>
    <MudGrid>
        <DashboardCard Icon="@AppIcons.Student"
                       Title="Students"
                       Count="@_studentCount"
                       Subtitle="Active Students"
                       NavigateUrl="/students">
            @if (!string.IsNullOrEmpty(_gradeDistribution) && _gradeDistribution != "No students yet")
            {
                <MudStack>
                    <MudText Typo="Typo.caption">@((MarkupString)_gradeDistribution)</MudText>
                </MudStack>
            }
        </DashboardCard>

        <DashboardCard Icon="@AppIcons.Events"
                       Title="Events"
                       Count="@_eventCount"
                       Subtitle="Total Events"
                       Caption="@($"{_teamEventsCount} Team | {_individualEventsCount} Individual")"
                       NavigateUrl="/events" />
    </MudGrid>
}

@code {
    private int _eventCount;
    private int _individualEventsCount;
    private int _teamEventsCount;
    private int _studentCount;
    private string _gradeDistribution = "";
    private int _teamCount;
    private int _individualTeamsCount;
    private int _groupTeamsCount;

    private bool _hasStudents => _studentCount > 0;
    private bool _hasTeams => _teamCount > 0;

    protected override async Task OnInitializedAsync()
    {
        await LoadStatistics();
    }

    private async Task LoadStatistics()
    {
        // Events statistics
        var events = await Context.Events.ToListAsync();
        _eventCount = events.Count();
        _individualEventsCount = events.Count(e => e.EventFormat == EventFormat.Individual);
        _teamEventsCount = events.Count(e => e.EventFormat == EventFormat.Team);

        // Students statistics
        _studentCount = await Context.Students.CountAsync();

        // Grade distribution
        var gradeGroups = await Context.Students
            .GroupBy(s => s.Grade)
            .Select(g => new { Grade = g.Key, Count = g.Count() })
            .OrderBy(g => g.Grade)
            .ToListAsync();

        if (gradeGroups.Any())
        {
            _gradeDistribution = string.Join(" | ", gradeGroups.Select(g =>
                $"<span style=\"white-space: nowrap\">{AppIcons.GetOrdinalSuperscript(g.Grade)}: <strong>{g.Count}</strong></span>"));
        }
        else
        {
            _gradeDistribution = "No students yet";
        }

        // Teams statistics
        var contextTeams = await Context.Teams.ToListAsync();
        _teamCount = contextTeams.Count;
        _individualTeamsCount =  contextTeams.Count(e => e.Event.EventFormat == EventFormat.Individual);
        _groupTeamsCount = contextTeams.Count(e => e.Event.EventFormat == EventFormat.Team);
    }
}