<?php

namespace App\Http\Controllers;

use App\Models\Plantel;
use App\Models\Promocion;
use App\Models\WhatsappLog;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;

class WhatsAppAnalyticsController extends Controller
{
    public function index(Request $request)
    {
        $plantelesIds = Auth::user()->plantelUsuarios->pluck('id');
        $planteles    = Auth::user()->plantelUsuarios;

        $query = WhatsappLog::query();

        if ($request->filled('plantel_id')) {
            $plantelId = (int) $request->plantel_id;
            $query->whereNotNull('alumno_id')
                  ->whereHas('alumno.alumnos.plantelUsuarios', function ($q) use ($plantelId) {
                      $q->where('plantels.id', $plantelId);
                  });
        }

        if ($request->filled('promocion_id')) {
            $query->whereJsonContains('payload->promocion_id', (int) $request->promocion_id);
        }

        if ($request->filled('fecha_desde')) {
            $query->where('created_at', '>=', $request->fecha_desde . ' 00:00:00');
        }

        if ($request->filled('fecha_hasta')) {
            $query->where('created_at', '<=', $request->fecha_hasta . ' 23:59:59');
        }

        // Métricas siempre sobre todos los tipos (sin filtro de tipo)
        $enviados   = (clone $query)->where('tipo', 'enviado')->count();
        $fallidos   = (clone $query)->where('tipo', 'error')->count();
        $optOuts    = (clone $query)->where('tipo', 'opt_out')->count();
        $recibidos  = (clone $query)->where('tipo', 'recibido')->count();
        $entregados = (clone $query)->where('tipo', 'status_delivered')->count();
        $leidos     = (clone $query)->where('tipo', 'status_read')->count();

        // El filtro de tipo solo aplica al listado de logs
        $logsQuery = clone $query;
        if ($request->filled('tipo')) {
            $logsQuery->where('tipo', $request->tipo);
        }

        $logsRecientes = $logsQuery
            ->with('alumno.alumnos')
            ->latest('created_at')
            ->paginate(20);

        $promociones = Promocion::whereHas('planteles', function ($q) use ($plantelesIds) {
            $q->whereIn('plantels.id', $plantelesIds);
        })->latest()->get();

        return view('promocion.analytics', compact(
            'enviados', 'fallidos', 'optOuts', 'recibidos', 'entregados', 'leidos',
            'logsRecientes', 'planteles', 'promociones'
        ));
    }

    public function stats(Request $request)
    {
        $query = WhatsappLog::query();

        if ($request->filled('plantel_id')) {
            $plantelId = (int) $request->plantel_id;
            $query->whereNotNull('alumno_id')
                  ->whereHas('alumno.alumnos.plantelUsuarios', function ($q) use ($plantelId) {
                      $q->where('plantels.id', $plantelId);
                  });
        }

        return response()->json([
            'enviados'  => (clone $query)->where('tipo', 'enviado')->count(),
            'recibidos' => (clone $query)->where('tipo', 'recibido')->count(),
            'fallidos'  => (clone $query)->where('tipo', 'error')->count(),
            'opt_outs'  => (clone $query)->where('tipo', 'opt_out')->count(),
        ]);
    }

    public function logs(Request $request)
    {
        $query = WhatsappLog::with('alumno.alumnos')
            ->orderByDesc('created_at');

        if ($request->filled('fecha_desde')) {
            $query->where('created_at', '>=', $request->fecha_desde);
        }

        if ($request->filled('fecha_hasta')) {
            $query->where('created_at', '<=', $request->fecha_hasta . ' 23:59:59');
        }

        if ($request->filled('plantel_id')) {
            $plantelId = (int) $request->plantel_id;
            $query->whereNotNull('alumno_id')
                  ->whereHas('alumno.alumnos.plantelUsuarios', function ($q) use ($plantelId) {
                      $q->where('plantels.id', $plantelId);
                  });
        }

        if ($request->filled('tipo')) {
            $query->where('tipo', $request->tipo);
        }

        $logs = $query->paginate(50);

        return response()->json($logs);
    }
}