<?php

namespace App\Http\Controllers\Api\Admin\IpPool\Concerns;

use App\Models\Customer;
use App\Models\IpPool;
use App\Models\IpPoolLog;
use App\Services\IpPool\IpAllocationService;
use App\Services\IpPool\IpReleaseService;
use App\Support\MailAttachments;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

trait ManagesIpPoolAllocation
{
    public function allocationPreview(Request $request, IpAllocationService $allocation): JsonResponse
    {
        $data = $this->validateAllocation($request);

        return response()->json([
            'error' => false,
            'data'  => $allocation->previewAllocation($data['ids'], $this->allocationCustomer($data), $data),
        ]);
    }

    public function allocate(Request $request, IpAllocationService $allocation): JsonResponse
    {
        $data = $this->validateAllocation($request);
        $count = $allocation->allocate($data['ids'], $this->allocationCustomer($data), $data, $request->user('admin'));

        return response()->json(['error' => false, 'message' => "Đã cấp phát {$count} IP và gửi email cho khách hàng"]);
    }

    public function revocationPreview(Request $request, IpAllocationService $allocation): JsonResponse
    {
        $data = $this->validateRevocation($request);

        return response()->json(['error' => false, 'data' => $allocation->previewRevocation($data['ids'], $data)]);
    }

    public function revoke(Request $request, IpAllocationService $allocation): JsonResponse
    {
        $data = $this->validateRevocation($request, withRecipients: true);
        $recipients = collect($data['recipients'])->keyBy('key')->all();
        $count = $allocation->revoke($data['ids'], $data, $recipients, $request->user('admin'));

        return response()->json(['error' => false, 'message' => "Đã thu hồi {$count} IP và gửi email thông báo"]);
    }

    public function release(Request $request, IpReleaseService $release): JsonResponse
    {
        $data = $request->validate([
            'ids'   => 'required|array|min:1|max:1000',
            'ids.*' => 'integer',
            'note'  => 'nullable|string|max:2000',
        ]);
        $count = $release->release($data['ids'], $data['note'] ?? null, $request->user('admin'));

        return response()->json(['error' => false, 'message' => "Đã giải phóng {$count} IP khỏi dịch vụ/VM"]);
    }

    public function logs(int $id): JsonResponse
    {
        $pool = IpPool::withTrashed()->findOrFail($id);

        return response()->json([
            'error' => false,
            'data'  => $pool->logs()->with('user:id,username,fullname')->limit(200)->get(),
        ]);
    }

    public function allLogs(Request $request): JsonResponse
    {
        $data = $request->validate([
            'filter'    => 'nullable|string|max:255',
            'action'    => 'nullable|array',
            'action.*'  => 'in:' . implode(',', [IpPoolLog::ALLOCATED, IpPoolLog::REVOKED, IpPoolLog::VM_ASSIGNED, IpPoolLog::VM_RELEASED]),
            'date_from' => 'nullable|date',
            'date_to'   => 'nullable|date',
            'per_page'  => 'nullable|integer|min:1|max:100',
        ]);

        $paginator = IpPoolLog::with('user:id,username,fullname')
            ->when($data['filter'] ?? null, function ($query, string $filter) {
                $like = '%' . addcslashes($filter, '%_\\') . '%';
                $query->where(fn ($q) => $q->where('ip_address', 'like', $like)
                    ->orWhere('customer_name', 'like', $like)
                    ->orWhere('service_name', 'like', $like)
                    ->orWhere('vm_name', 'like', $like)
                    ->orWhere('email_to', 'like', $like)
                    ->orWhere('email_cc', 'like', $like)
                    ->orWhere('email_bcc', 'like', $like));
            })
            ->when($data['action'] ?? null, fn ($query, array $actions) => $query->whereIn('action', $actions))
            ->when($data['date_from'] ?? null, fn ($query, string $from) => $query->whereDate('created_at', '>=', $from))
            ->when($data['date_to'] ?? null, fn ($query, string $to) => $query->whereDate('created_at', '<=', $to))
            ->latest('id')
            ->paginate($data['per_page'] ?? 20);

        return response()->json([
            'error' => false,
            'data'  => [
                'items'        => $paginator->items(),
                'total'        => $paginator->total(),
                'per_page'     => $paginator->perPage(),
                'current_page' => $paginator->currentPage(),
            ],
        ]);
    }

    private function validateAllocation(Request $request): array
    {
        return $request->validate([
            'ids'           => 'required|array|min:1|max:1000',
            'ids.*'         => 'integer',
            'customer_uuid' => 'required|string|exists:customers,uuid',
            'to'            => ['required', 'string', 'max:1000', $this->multiEmailRule()],
            'cc'            => ['nullable', 'string', 'max:1000', $this->multiEmailRule()],
            'date'          => 'required|date',
            'service_name'  => 'nullable|string|max:255',
            'services'      => 'nullable|array',
            'services.*'    => 'nullable|string|max:255',
            'note'          => 'nullable|string|max:2000',
            'subject'       => 'nullable|string|max:255',
            ...MailAttachments::rules(),
        ]);
    }

    private function validateRevocation(Request $request, bool $withRecipients = false): array
    {
        return $request->validate([
            'ids'                => 'required|array|min:1|max:1000',
            'ids.*'              => 'integer',
            'date'               => 'required|date',
            'note'               => 'nullable|string|max:2000',
            'recipients'         => $withRecipients ? 'required|array|min:1' : 'prohibited',
            'recipients.*.key'   => 'required|string',
            'recipients.*.to'    => ['nullable', 'string', 'max:1000', $this->multiEmailRule()],
            'recipients.*.cc'    => ['nullable', 'string', 'max:1000', $this->multiEmailRule()],
            'recipients.*.subject' => 'nullable|string|max:255',
        ]);
    }

    private function allocationCustomer(array $data): Customer
    {
        return Customer::where('uuid', $data['customer_uuid'])->firstOrFail();
    }
}