<?php

namespace App\Http\Controllers;

use App\Models\IncidentActivity;
use App\Models\PaymentIncident;
use Illuminate\Http\Request;

class PaymentDashboardController extends Controller
{
    // ─── GF-Ansicht (Alois) ───────────────────────────────────────────────────
    public function management()
    {
        $stats = $this->getStats();
        $recentIncidents = PaymentIncident::orderBy('detected_at', 'desc')->take(5)->get();
        $openIncidents = PaymentIncident::whereIn('status', ['open', 'in_progress', 'waiting_provider'])->get();
        $providerStats = $this->getProviderStats();

        return view('dashboard.management', compact('stats', 'recentIncidents', 'openIncidents', 'providerStats'));
    }

    // ─── Entwickler-Ansicht (Kevin) ───────────────────────────────────────────
    public function developer()
    {
        $stats = $this->getStats();
        $allIncidents = PaymentIncident::with('activities')->orderBy('detected_at', 'desc')->paginate(20);
        $openIncidents = PaymentIncident::whereIn('status', ['open', 'in_progress', 'waiting_provider'])->with('activities')->get();
        $providerStats = $this->getProviderStats();
        $recentActivity = IncidentActivity::with('incident')->orderBy('created_at', 'desc')->take(10)->get();

        return view('dashboard.developer', compact('stats', 'allIncidents', 'openIncidents', 'providerStats', 'recentActivity'));
    }

    // ─── Incident erstellen ───────────────────────────────────────────────────
    public function store(Request $request)
    {
        $validated = $request->validate([
            'title' => 'required|string|max:255',
            'description' => 'nullable|string',
            'provider' => 'required|in:payone,stripe,paypal,mollie,other',
            'type' => 'required|in:outage,ipn_error,payment_failure,slow_response,other',
            'severity' => 'required|in:low,medium,high,critical',
            'affected_orders' => 'nullable|integer|min:0',
            'affected_revenue' => 'nullable|numeric|min:0',
            'ticket_number' => 'nullable|string|max:100',
            'detected_at' => 'required|date',
        ]);

        $incident = PaymentIncident::create($validated);

        // Erste Aktivität automatisch anlegen
        IncidentActivity::create([
            'incident_id' => $incident->id,
            'type' => 'note',
            'title' => 'Incident eröffnet',
            'content' => $validated['description'] ?? null,
            'author' => auth()->user()->name ?? 'Kevin',
        ]);

        return redirect()->route('payment-dashboard.developer')
            ->with('success', 'Incident erfolgreich angelegt.');
    }

    // ─── Aktivität hinzufügen ─────────────────────────────────────────────────
    public function addActivity(Request $request, PaymentIncident $incident)
    {
        $validated = $request->validate([
            'type' => 'required|in:note,email,call,ticket,status_change,provider_response',
            'title' => 'required|string|max:255',
            'content' => 'nullable|string',
        ]);

        IncidentActivity::create([
            'incident_id' => $incident->id,
            'type' => $validated['type'],
            'title' => $validated['title'],
            'content' => $validated['content'] ?? null,
            'author' => auth()->user()->name ?? 'Kevin',
        ]);

        // Status automatisch auf "in_progress" setzen wenn noch offen
        if ($incident->status === 'open') {
            $incident->update(['status' => 'in_progress']);
        }

        return back()->with('success', 'Aktivität hinzugefügt.');
    }

    // ─── Status ändern ────────────────────────────────────────────────────────
    public function updateStatus(Request $request, PaymentIncident $incident)
    {
        $request->validate(['status' => 'required|in:open,in_progress,waiting_provider,resolved,closed']);

        $oldStatus = $incident->status_label;
        $incident->update([
            'status' => $request->status,
            'resolved_at' => in_array($request->status, ['resolved', 'closed']) ? now() : null,
        ]);

        IncidentActivity::create([
            'incident_id' => $incident->id,
            'type' => 'status_change',
            'title' => 'Status geändert: '.$oldStatus.' → '.$incident->fresh()->status_label,
            'author' => auth()->user()->name ?? 'Kevin',
        ]);

        return back()->with('success', 'Status aktualisiert.');
    }

    // ─── Incident Detail ──────────────────────────────────────────────────────
    public function show(PaymentIncident $incident)
    {
        $incident->load('activities');

        return view('dashboard.show', compact('incident'));
    }

    // ─── Helpers ──────────────────────────────────────────────────────────────
    private function getStats(): array
    {
        return [
            'open_incidents' => PaymentIncident::whereIn('status', ['open', 'waiting_provider'])->count(),
            'in_progress' => PaymentIncident::where('status', 'in_progress')->count(),
            'resolved_this_month' => PaymentIncident::where('status', 'resolved')
                ->whereMonth('resolved_at', now()->month)->count(),
            'total_affected_revenue' => PaymentIncident::whereIn('status', ['open', 'in_progress', 'waiting_provider'])
                ->sum('affected_revenue'),
            'payone_incidents_30d' => PaymentIncident::where('provider', 'payone')
                ->where('detected_at', '>=', now()->subDays(30))->count(),
        ];
    }

    private function getProviderStats(): array
    {
        $providers = ['payone', 'stripe', 'paypal', 'mollie'];
        $stats = [];

        foreach ($providers as $provider) {
            $stats[$provider] = [
                'label' => strtoupper($provider),
                'open_incidents' => PaymentIncident::where('provider', $provider)
                    ->whereIn('status', ['open', 'in_progress', 'waiting_provider'])->count(),
                'total_30d' => PaymentIncident::where('provider', $provider)
                    ->where('detected_at', '>=', now()->subDays(30))->count(),
                'last_incident' => PaymentIncident::where('provider', $provider)
                    ->orderBy('detected_at', 'desc')->first(),
            ];
        }

        return $stats;
    }
}