@page "/logs"
@using Microsoft.EntityFrameworkCore
@using TrafagSalesExporter.Data
@inject IDbContextFactory<AppDbContext> DbFactory
@inject ISnackbar Snackbar
@inject IDialogService DialogService

<PageTitle>Logs</PageTitle>

<MudText Typo="Typo.h4" Class="mb-4">Export Logs</MudText>

<MudPaper Class="pa-4 mb-4" Elevation="1">
    <MudStack Row AlignItems="AlignItems.Center" Spacing="3">
        <MudSelect @bind-Value="_filterLand" Label="Land" Clearable Dense Style="max-width:200px;">
            @foreach (var land in _availableLands)
            {
                <MudSelectItem Value="@land">@land</MudSelectItem>
            }
        </MudSelect>
        <MudSelect @bind-Value="_filterStatus" Label="Status" Clearable Dense Style="max-width:150px;">
            <MudSelectItem Value="@("OK")">OK</MudSelectItem>
            <MudSelectItem Value="@("Error")">Error</MudSelectItem>
        </MudSelect>
        <MudDatePicker @bind-Date="_filterDate" Label="Datum" Clearable Dense Style="max-width:200px;" />
        <MudButton Variant="Variant.Filled" Color="Color.Primary" OnClick="ApplyFilter"
                   StartIcon="@Icons.Material.Filled.FilterAlt">
            Filtern
        </MudButton>
        <MudSpacer />
        <MudButton Variant="Variant.Outlined" Color="Color.Error" OnClick="DeleteOldLogs"
                   StartIcon="@Icons.Material.Filled.DeleteSweep">
            Alte Logs löschen
        </MudButton>
    </MudStack>
</MudPaper>

<MudTable Items="_logs" Dense Hover Striped Loading="_loading">
    <HeaderContent>
        <MudTh>Zeitpunkt</MudTh>
        <MudTh>Land</MudTh>
        <MudTh>TSC</MudTh>
        <MudTh>Status</MudTh>
        <MudTh>Zeilen</MudTh>
        <MudTh>Dauer</MudTh>
        <MudTh>Dateiname</MudTh>
        <MudTh>Fehler</MudTh>
    </HeaderContent>
    <RowTemplate>
        <MudTd>@context.Timestamp.ToString("dd.MM.yyyy HH:mm:ss")</MudTd>
        <MudTd>@context.Land</MudTd>
        <MudTd>@context.TSC</MudTd>
        <MudTd>
            @if (context.Status == "OK")
            {
                <MudChip T="string" Size="Size.Small" Color="Color.Success">OK</MudChip>
            }
            else
            {
                <MudChip T="string" Size="Size.Small" Color="Color.Error">Error</MudChip>
            }
        </MudTd>
        <MudTd>@context.RowCount.ToString("N0")</MudTd>
        <MudTd>@($"{context.DurationSeconds:F1}s")</MudTd>
        <MudTd>@context.FileName</MudTd>
        <MudTd>
            @if (!string.IsNullOrEmpty(context.ErrorMessage))
            {
                <MudTooltip Text="@context.ErrorMessage">
                    <MudText Typo="Typo.caption" Color="Color.Error" Style="max-width:300px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; display:block;">
                        @context.ErrorMessage
                    </MudText>
                </MudTooltip>
            }
        </MudTd>
    </RowTemplate>
</MudTable>

@code {
    private List<ExportLog> _logs = new();
    private List<string> _availableLands = new();
    private string? _filterLand;
    private string? _filterStatus;
    private DateTime? _filterDate;
    private bool _loading = true;

    protected override async Task OnInitializedAsync()
    {
        using var db = await DbFactory.CreateDbContextAsync();
        _availableLands = await db.ExportLogs.Select(l => l.Land).Distinct().OrderBy(l => l).ToListAsync();
        await LoadLogsAsync();
    }

    private async Task LoadLogsAsync()
    {
        _loading = true;
        using var db = await DbFactory.CreateDbContextAsync();
        IQueryable<ExportLog> query = db.ExportLogs.OrderByDescending(l => l.Timestamp);

        if (!string.IsNullOrEmpty(_filterLand))
            query = query.Where(l => l.Land == _filterLand);

        if (!string.IsNullOrEmpty(_filterStatus))
            query = query.Where(l => l.Status == _filterStatus);

        if (_filterDate.HasValue)
            query = query.Where(l => l.Timestamp.Date == _filterDate.Value.Date);

        _logs = await query.Take(500).ToListAsync();
        _loading = false;
    }

    private async Task ApplyFilter()
    {
        await LoadLogsAsync();
    }

    private async Task DeleteOldLogs()
    {
        var result = await DialogService.ShowMessageBox(
            "Alte Logs löschen",
            "Logs älter als 90 Tage löschen?",
            yesText: "Löschen", cancelText: "Abbrechen");

        if (result != true) return;

        using var db = await DbFactory.CreateDbContextAsync();
        var cutoff = DateTime.Now.AddDays(-90);
        var oldLogs = await db.ExportLogs.Where(l => l.Timestamp < cutoff).ToListAsync();
        db.ExportLogs.RemoveRange(oldLogs);
        var count = await db.SaveChangesAsync();
        await LoadLogsAsync();
        Snackbar.Add($"{oldLogs.Count} alte Logs gelöscht", Severity.Info);
    }
}