@using SZUAbsolventenverein.Module.PremiumArea.Services
@using SZUAbsolventenverein.Module.PremiumArea.Models

@namespace SZUAbsolventenverein.Module.PremiumArea
@inherits ModuleBase
@inject IEngineerApplicationService ApplicationService
@inject NavigationManager NavManager
@inject IStringLocalizer<Apply> Localizer

<div class="row">
    <div class="col-md-12">
        <h3>@Localizer["Ingenieur Antrag"]</h3>
        @if (!string.IsNullOrEmpty(_message))
        {
            <div class="alert alert-info">@_message</div>
        }
    </div>
</div>

@if (_showForm)
{
    <div class="card p-3">
        <p>Bitte laden Sie Ihren Ingenieur-Antrag als PDF-Datei hoch.</p>

        <div class="mb-3">
            <label for="title" class="form-label">Titel</label>
            <input id="title" type="text" class="form-control" @bind="_existingApp.Title" maxlength="256"/>
        </div>

        <div class="mb-3">
            <label for="description" class="form-label">Kurzbeschreibung</label>
            <textarea id="description" class="form-control" rows="3" @bind="_existingApp.ShortDescription" placeholder="Kurze Beschreibung Ihres Ingenieur-Antrags..."></textarea>
        </div>

        @* <div class="mb-3">
            <label for="pdfUpload" class="form-label">Antrags-PDF</label>
            <InputFile OnChange="@LoadFiles" class="form-control" accept=".pdf"/>
            <div class="form-text">Max Größe: 20MB. Format: Nur PDF.</div>
        </div> *@


        <FileManager OnSelectFile="@OnSelectFile" ShowProgress="true" ShowSuccess="true"/>

        <div class="mt-2">
            <button class="btn btn-primary" @onclick="SubmitApplication" disabled="@(_existingApp?.FileId == 0)">
                @(_existingApp.ApplicationId > 0 ? "Antrag aktualisieren" : "Antrag hochladen")
            </button>
            <button class="btn btn-secondary" @onclick="Cancel">Abbrechen</button>
        </div>
    </div>
}
else
{
    @if (_existingApp.FileId > 0)
    {
        <div class="card">
            <div class="card-header">Ihr Antrag</div>
            <div class="card-body">
                <p>
                    <strong>Status:</strong> <span class="badge bg-success">Veröffentlicht</span>
                </p>
                @if (!string.IsNullOrEmpty(_existingApp.Title))
                {
                    <p>
                        <strong>Titel:</strong> @_existingApp.Title
                    </p>
                }
                @if (!string.IsNullOrEmpty(_existingApp.ShortDescription))
                {
                    <p>
                        <strong>Kurzbeschreibung:</strong> @_existingApp.ShortDescription
                    </p>
                }
                <p>
                    <strong>Datum:</strong> @_existingApp.CreatedOn.ToShortDateString()
                </p>
                <button class="btn btn-primary" @onclick="EditApp">Antrag aktualisieren</button>
            </div>
        </div>
    }
}

@code {
    public override SecurityAccessLevel SecurityAccessLevel => SecurityAccessLevel.View;

    private EngineerApplication _existingApp = new EngineerApplication();
    private bool _showForm = true;
    private string _message = "";

    protected override async Task OnInitializedAsync()
    {
        try
        {
            var apps = await ApplicationService.GetApplicationsAsync(ModuleState.ModuleId);
            var userId = PageState.User?.UserId ?? -1;
            _existingApp.Status = "New";
            _existingApp = apps.FirstOrDefault(a => a.UserId == userId, _existingApp);

            if (_existingApp.FileId > 0)
            {
                _showForm = false;
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
        }
    }

    private void EditApp()
    {
        _showForm = true;
    }

    private async Task SubmitApplication()
    {
        if (_existingApp == null || _existingApp.FileId == 0)
        {
            _message = "Bitte wählen Sie eine Datei aus.";
            return;
        }

        try
        {
            var app = new EngineerApplication
            {
                ApplicationId = _existingApp?.ApplicationId ?? 0,
                ModuleId = ModuleState.ModuleId,
                UserId = PageState.User.UserId,
                FileId = _existingApp.FileId,
                Title = _existingApp.Title,
                ShortDescription = _existingApp.ShortDescription,
                Status = "Published", // Auto-publish
                SubmittedOn = DateTime.UtcNow,
                ApprovedOn = DateTime.UtcNow, // Auto-approved
            };

            if (app.ApplicationId == 0)
            {
                var result = await ApplicationService.AddApplicationAsync(app);
                _existingApp = result;
            }
            else
            {
                await ApplicationService.UpdateApplicationAsync(app);
                _existingApp = await ApplicationService.GetApplicationAsync(app.ApplicationId, ModuleState.ModuleId);
            }

            _showForm = false;
            _message = "Antrag erfolgreich veröffentlicht.";
        }
        catch (Exception ex)
        {
            _message = "Fehler: " + ex.Message;
        }
    }

    private void Cancel()
    {
        NavManager.NavigateTo(NavigateUrl());
    }


    private Task OnSelectFile(int fileId)
    {
        _existingApp.FileId = fileId;
        return Task.CompletedTask;
    }

}