<?php

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

use App\Helpers\OrderHelper;
use App\Http\Controllers\Controller;
use App\Jobs\VirtualMachine\Provision\ResendVmCredentialsEmailJob;
use App\Models\ActivityLog;
use App\Models\DomainPricing;
use App\Models\ModuleVmware;
use App\Models\Service;
use App\Services\Customer\CustomerServiceAssignment;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;

class ServiceController extends Controller
{
    public function __construct(private readonly CustomerServiceAssignment $assignment) {}

    public function index(Request $request): JsonResponse
    {
        $perPage = min((int) ($request->per_page ?? 15), 100);

        $query = Service::with(['customer:id,uuid,fullname,email', 'product:id,uuid,name', 'invoice:id,invoice_number', 'vmware:id,name,module_ip_address'])
            ->where(fn($q) => $q->whereNull('order_item_id')->orWhereNull('type')->orWhere('type', '!=', 'domain'))
            ->when($request->filter, fn($q, $v) => $q->where('server_name', 'like', "%{$v}%"))
            ->when($request->status,  fn($q, $v) => $q->where('status', $v))
            ->when($request->customer_id, fn($q, $v) => $q->where('customer_id', $v))
            ->when($request->boolean('unassigned'), fn($q) => $q->whereNull('customer_id'));

        $paginator = $query->latest()->paginate($perPage);

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

    public function domainQuote(Request $request): JsonResponse
    {
        $data = $request->validate([
            'domain' => 'required|string|max:255',
            'billing_cycle' => 'nullable|in:monthly,quarterly,semi_annually,annually,biennially,triennially',
        ]);

        $pricing = DomainPricing::matchDomain($data['domain']);
        if (!$pricing) {
            return response()->json(['error' => false, 'data' => null]);
        }

        $years = DomainPricing::yearsForMonths(OrderHelper::cycleToMonths($data['billing_cycle'] ?? 'annually'));

        return response()->json([
            'error' => false,
            'data' => [
                'tld' => $pricing->tld,
                'setup_fee' => is_numeric($pricing->setup_fee) ? (int) $pricing->setup_fee : 0,
                'first_year' => (int) $pricing->first_year,
                'renewal' => (int) $pricing->recurring_fee,
                'years' => $years,
                'price' => $pricing->orderPrice($years),
            ],
        ]);
    }

    public function show(int $id): JsonResponse
    {
        $service = Service::with(['customer', 'product', 'orderItem', 'invoice', 'vmware.os.osGroup', 'addons', ...Service::HOSTING_ACCOUNT_RELATIONS])
            ->findOrFail($id);

        ModuleVmware::resolveVirtualMachineIds([$service->vmware]);

        $service->setAttribute('activity_logs', ActivityLog::where('subject_type', Service::class)
            ->where('subject_id', $service->id)
            ->latest('id')
            ->limit(50)
            ->get(['id', 'event', 'description', 'causer_type', 'causer_name', 'old_values', 'new_values', 'created_at']));

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

    public function bulkAction(Request $request): JsonResponse
    {
        $data = $request->validate([
            'ids' => 'required|array|min:1',
            'ids.*' => 'integer|distinct|exists:services,id',
            'action' => 'required|in:activate,suspend,cancel,detach-customer',
        ]);

        if ($data['action'] === 'detach-customer') {
            $updated = $this->detachCustomers($data['ids']);
        } else {
            $updates = match ($data['action']) {
                'activate' => ['status' => 'active', 'suspended_at' => null, 'cancelled_at' => null],
                'suspend' => ['status' => 'suspended', 'suspended_at' => now()],
                'cancel' => ['status' => 'cancelled', 'cancelled_at' => now()],
            };

            $updated = Service::whereIn('id', $data['ids'])->update($updates);
        }

        return response()->json([
            'error' => false,
            'message' => "Đã cập nhật {$updated} dịch vụ.",
            'data' => ['updated' => $updated],
        ]);
    }

    public function detachCustomer(int $id): JsonResponse
    {
        $this->detachCustomers([Service::findOrFail($id)->id]);

        return response()->json(['error' => false, 'message' => 'Đã gỡ khách hàng khỏi dịch vụ.']);
    }

    private function detachCustomers(array $ids): int
    {
        return DB::transaction(function () use ($ids) {
            $services = Service::with('customer')->whereIn('id', $ids)->whereNotNull('customer_id')->get();
            $services->each(fn (Service $service) => $this->assignment->detach($service));

            return $services->count();
        });
    }

    public function resendCredentials(int $id): JsonResponse
    {
        $service = Service::findOrFail($id);

        abort_if(!$service->vm_id, 422, 'Dịch vụ chưa gắn VM.');

        ResendVmCredentialsEmailJob::dispatch($service->vm_id);

        return response()->json(['error' => false, 'message' => 'Đã xếp hàng gửi lại thông tin VPS cho khách hàng.']);
    }
}