<?php

declare(strict_types=1);

namespace App\Http\Controllers\Api\Admin\EmailLog;

use App\Http\Controllers\Controller;
use App\Models\Mail;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

final class EmailLogController extends Controller
{
    public function index(Request $request): JsonResponse
    {
        $limit = min((int) $request->get('limit', $request->get('per_page', 20)), 200);

        $query = Mail::query()->with(['customer', 'template'])->orderByDesc('created_at');

        // sort=field_asc|field_desc
        if ($sort = $request->get('sort')) {
            $parts = explode('_', $sort);
            $dir   = array_pop($parts);
            $col   = implode('_', $parts);

            $allowed = ['created_at', 'subject', 'status', 'to'];
            if (in_array($col, $allowed, true) && in_array($dir, ['asc', 'desc'], true)) {
                $query->reorder($col, $dir);
            }
        }

        if ($status = $request->get('status')) {
            $query->where('status', array_search($status, Mail::STATUS_MAP, true) ?: $status);
        }
        if ($customerId = $request->get('customer_id')) {
            $query->where('customer_id', (int) $customerId);
        }
        if ($search = trim((string) $request->get('search', ''))) {
            $query->where(function ($q) use ($search) {
                $q->where('to', 'like', "%{$search}%")
                  ->orWhere('subject', 'like', "%{$search}%");
            });
        }

        $paginator = $query->paginate($limit);

        return response()->json([
            'error' => false,
            'data'  => [
                'items'        => $paginator->getCollection()->map($this->mapLog(...))->all(),
                'total'        => $paginator->total(),
                'per_page'     => $paginator->perPage(),
                'current_page' => $paginator->currentPage(),
                'last_page'    => $paginator->lastPage(),
            ],
        ]);
    }

    public function show(int $id): JsonResponse
    {
        $log = Mail::with(['customer', 'template'])->find($id);

        if (!$log) {
            return response()->json(['error' => true, 'message' => 'Không tìm thấy email log'], 404);
        }

        return response()->json(['error' => false, 'data' => $this->mapLog($log)]);
    }

    private function mapLog(Mail $log): array
    {
        return [
            'id'            => $log->id,
            'to_email'      => $log->to,
            'to_name'       => $log->customer->fullname ?? null,
            'customer_id'   => $log->customer_id,
            'subject'       => $log->subject,
            'template'      => $log->template->name ?? '—',
            'status'        => $log->status,
            'error_message' => null,
            'sent_at'       => $log->status === 'sent' ? $log->created_at : null,
            'created_at'    => $log->created_at,
        ];
    }
}