<?php

namespace App\Services;

use App\Jobs\LogActivityJob;
use Carbon\CarbonInterface;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\Log;

class ActivityLogger
{
    private array $hiddenFields = [
        'password',
        'remember_token',
        'plain_password',
        'token',
        'secret',
        'api_key',
        'updated_at',
    ];

    public function log(
        string $event,
        string $logName,
        string $description,
        ?Model  $subject = null,
        array   $oldValues = [],
        array   $newValues = [],
        ?CarbonInterface $startedAt = null,
        ?CarbonInterface $finishedAt = null,
    ): void {
        try {
            [$causerType, $causerId, $causerName] = $this->resolveCauser();

            LogActivityJob::dispatch([
                'log_name'     => $logName,
                'event'        => $event,
                'description'  => $description,
                'subject_type' => $subject ? get_class($subject) : null,
                'subject_id'   => $subject?->getKey(),
                'causer_type'  => $causerType,
                'causer_id'    => $causerId,
                'causer_name'  => $causerName,
                'old_values'   => $oldValues ?: null,
                'new_values'   => $newValues ?: null,
                'ip_address'   => request()->getClientIp(),
                'user_agent'   => request()->userAgent(),
                'started_at'   => $startedAt?->format('Y-m-d H:i:s.v'),
                'finished_at'  => $finishedAt?->format('Y-m-d H:i:s.v'),
                'created_at'   => now()->format('Y-m-d H:i:s.v'),
            ]);
        } catch (\Throwable $e) {
            Log::warning('[ActivityLogger] Failed to dispatch log job', [
                'error'    => $e->getMessage(),
                'event'    => $event,
                'log_name' => $logName,
            ]);
        }
    }

    public function logCreated(Model $model, string $logName): void
    {
        $causer = $this->getCauserName();
        $id     = $model->getKey();

        $this->log(
            event: 'created',
            logName: $logName,
            description: "$causer tạo mới $logName" . ($id ? " #$id" : ''),
            subject: $model,
            newValues: $this->filterValues($model->getAttributes()),
        );
    }

    public function logUpdated(Model $model, string $logName): void
    {
        $dirty = $model->getDirty();
        if (empty($dirty)) {
            return;
        }

        $dirty    = $this->filterValues($dirty);
        $original = $this->filterValues(array_intersect_key($model->getOriginal(), $dirty));

        if (empty($dirty)) {
            return;
        }

        $causer = $this->getCauserName();
        $id     = $model->getKey();
        $fields = implode(', ', array_keys($dirty));

        $this->log(
            event: 'updated',
            logName: $logName,
            description: "$causer cập nhật $logName" . ($id ? " #$id" : '') . " [$fields]",
            subject: $model,
            oldValues: $original,
            newValues: $dirty,
        );
    }

    public function logDeleted(Model $model, string $logName): void
    {
        $causer = $this->getCauserName();
        $id     = $model->getOriginal($model->getKeyName()) ?? $model->getKey();

        $this->log(
            event: 'deleted',
            logName: $logName,
            description: "$causer xóa $logName" . ($id ? " #$id" : ''),
            subject: $model,
        );
    }

    public function logRestored(Model $model, string $logName): void
    {
        $causer = $this->getCauserName();
        $id     = $model->getKey();

        $this->log(
            event: 'restored',
            logName: $logName,
            description: "$causer khôi phục $logName" . ($id ? " #$id" : ''),
            subject: $model,
        );
    }

    public function logAuth(string $event, string $causerType, $causerId, string $causerName): void
    {
        $action = match ($event) {
            'login'    => 'đăng nhập',
            'logout'   => 'đăng xuất',
            'register' => 'đăng ký tài khoản',
            default    => $event,
        };

        $this->log(
            event: $event,
            logName: 'auth',
            description: "[$causerType] $causerName $action",
            subject: null,
            oldValues: [],
            newValues: ['causer_type' => $causerType, 'causer_id' => $causerId, 'causer_name' => $causerName],
        );
    }

    private function resolveCauser(): array
    {
        if ($admin = auth()->guard('admin')->user()) {
            return ['admin', $admin->id, $admin->username ?? $admin->email];
        }

        if ($customer = auth()->guard('client')->user()) {
            return ['customer', $customer->id, $customer->email ?? $customer->name];
        }

        return ['system', null, 'System'];
    }

    public function getCauserName(): string
    {
        [, , $name] = $this->resolveCauser();
        return $name;
    }

    private function filterValues(array $values): array
    {
        return array_diff_key($values, array_flip($this->hiddenFields));
    }
}