@page "/management-cockpit"
@using TrafagSalesExporter.Models
@using TrafagSalesExporter.Services
@inject IManagementCockpitService CockpitService
@inject ISnackbar Snackbar

<PageTitle>Management Cockpit</PageTitle>

<MudText Typo="Typo.h4" Class="mb-4">Management Cockpit</MudText>

<MudPaper Class="pa-4 mb-4" Elevation="1">
    <MudGrid>
        <MudItem xs="12" md="8">
            <MudSelect T="string" @bind-Value="_selectedFilePath" Label="Vorhandene Excel-Datei" Dense>
                @foreach (var file in _files)
                {
                    <MudSelectItem Value="@file.Path">@file.DisplayName</MudSelectItem>
                }
            </MudSelect>
        </MudItem>
        <MudItem xs="12" md="4">
            <MudStack Row Spacing="2">
                <MudButton Variant="Variant.Outlined" Color="Color.Info" OnClick="ReloadFiles"
                           StartIcon="@Icons.Material.Filled.Refresh" Disabled="_loadingFiles">
                    Dateien laden
                </MudButton>
                <MudButton Variant="Variant.Filled" Color="Color.Primary" OnClick="Analyze"
                           StartIcon="@Icons.Material.Filled.Analytics" Disabled="_analyzing || string.IsNullOrWhiteSpace(_selectedFilePath)">
                    @(_analyzing ? "Analysiere..." : "Cockpit erzeugen")
                </MudButton>
            </MudStack>
        </MudItem>
    </MudGrid>
</MudPaper>

@if (_result is not null)
{
    <MudGrid Class="mb-4">
        <MudItem xs="12" md="3"><MudPaper Class="pa-4"><MudText Typo="Typo.caption">Land</MudText><MudText Typo="Typo.h6">@_result.Summary.Land</MudText></MudPaper></MudItem>
        <MudItem xs="12" md="3"><MudPaper Class="pa-4"><MudText Typo="Typo.caption">TSC</MudText><MudText Typo="Typo.h6">@_result.Summary.Tsc</MudText></MudPaper></MudItem>
        <MudItem xs="12" md="3"><MudPaper Class="pa-4"><MudText Typo="Typo.caption">Umsatz</MudText><MudText Typo="Typo.h6">@_result.Summary.SalesValueTotal.ToString("N2")</MudText></MudPaper></MudItem>
        <MudItem xs="12" md="3"><MudPaper Class="pa-4"><MudText Typo="Typo.caption">Geschätzte Marge</MudText><MudText Typo="Typo.h6">@($"{_result.Summary.EstimatedMarginPercent:F1}%")</MudText></MudPaper></MudItem>
    </MudGrid>

    <MudPaper Class="pa-4 mb-4" Elevation="1">
        <MudText Typo="Typo.h6" Class="mb-2">Management Aussagen</MudText>
        @foreach (var finding in _result.Findings)
        {
            <MudAlert Severity="@MapSeverity(finding.Severity)" Dense Variant="Variant.Outlined" Class="mb-2">
                <b>@finding.Title:</b> @finding.Detail
            </MudAlert>
        }
    </MudPaper>

    <MudGrid Class="mb-4">
        <MudItem xs="12" md="4">
            <MudPaper Class="pa-4" Elevation="1">
                <MudText Typo="Typo.h6" Class="mb-2">Top Kunden</MudText>
                @foreach (var item in _result.TopCustomers)
                {
                    <MudText Typo="Typo.body2">@($"{item.Label}: {item.Value:N2} ({item.SharePercent:F1}%)")</MudText>
                }
            </MudPaper>
        </MudItem>
        <MudItem xs="12" md="4">
            <MudPaper Class="pa-4" Elevation="1">
                <MudText Typo="Typo.h6" Class="mb-2">Top Produktgruppen</MudText>
                @foreach (var item in _result.TopProductGroups)
                {
                    <MudText Typo="Typo.body2">@($"{item.Label}: {item.Value:N2} ({item.SharePercent:F1}%)")</MudText>
                }
            </MudPaper>
        </MudItem>
        <MudItem xs="12" md="4">
            <MudPaper Class="pa-4" Elevation="1">
                <MudText Typo="Typo.h6" Class="mb-2">Top Sales Owner</MudText>
                @foreach (var item in _result.TopSalesEmployees)
                {
                    <MudText Typo="Typo.body2">@($"{item.Label}: {item.Value:N2} ({item.SharePercent:F1}%)")</MudText>
                }
            </MudPaper>
        </MudItem>
    </MudGrid>

    <MudPaper Class="pa-4" Elevation="1">
        <MudText Typo="Typo.h6" Class="mb-2">Datenqualität</MudText>
        @foreach (var entry in _result.DataQualityCounts.OrderByDescending(x => x.Value))
        {
            <MudText Typo="Typo.body2">@($"{entry.Key}: {entry.Value}")</MudText>
        }
    </MudPaper>
}

@code {
    private List<ManagementCockpitFileOption> _files = [];
    private string? _selectedFilePath;
    private ManagementCockpitResult? _result;
    private bool _loadingFiles;
    private bool _analyzing;

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

    private async Task ReloadFiles()
    {
        _loadingFiles = true;
        try
        {
            _files = await CockpitService.GetAvailableFilesAsync();
            _selectedFilePath ??= _files.FirstOrDefault()?.Path;
        }
        finally
        {
            _loadingFiles = false;
        }
    }

    private async Task Analyze()
    {
        if (string.IsNullOrWhiteSpace(_selectedFilePath))
            return;

        _analyzing = true;
        try
        {
            _result = await CockpitService.AnalyzeAsync(_selectedFilePath);
        }
        catch (Exception ex)
        {
            Snackbar.Add($"Cockpit konnte nicht erzeugt werden: {ex.Message}", Severity.Error);
        }
        finally
        {
            _analyzing = false;
        }
    }

    private static Severity MapSeverity(string severity) => severity switch
    {
        "Warning" => Severity.Warning,
        "Error" => Severity.Error,
        _ => Severity.Info
    };
}