<?php

namespace App\Models\Admin;

use App\Models\User;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Relations\HasOne;

/**
 * API Flow Tester - 플로우 정의 모델
 *
 * @property int $id
 * @property string $name
 * @property string|null $description
 * @property string|null $category
 * @property array $flow_definition
 * @property bool $is_active
 * @property int|null $created_by
 * @property int|null $updated_by
 * @property \Carbon\Carbon $created_at
 * @property \Carbon\Carbon $updated_at
 */
class AdminApiFlow extends Model
{
    protected $table = 'admin_api_flows';

    protected $fillable = [
        'name',
        'description',
        'category',
        'flow_definition',
        'is_active',
        'created_by',
        'updated_by',
    ];

    protected $casts = [
        'flow_definition' => 'array',
        'is_active' => 'boolean',
        'created_by' => 'integer',
        'updated_by' => 'integer',
    ];

    /**
     * 활성화된 플로우만 조회
     */
    public function scopeActive($query)
    {
        return $query->where('is_active', true);
    }

    /**
     * 카테고리로 필터링
     */
    public function scopeCategory($query, string $category)
    {
        return $query->where('category', $category);
    }

    /**
     * 관계: 실행 이력
     */
    public function runs(): HasMany
    {
        return $this->hasMany(AdminApiFlowRun::class, 'flow_id');
    }

    /**
     * 관계: 생성자
     */
    public function creator(): BelongsTo
    {
        return $this->belongsTo(User::class, 'created_by');
    }

    /**
     * 관계: 수정자
     */
    public function updater(): BelongsTo
    {
        return $this->belongsTo(User::class, 'updated_by');
    }

    /**
     * 관계: 최신 실행 기록 (서브쿼리 방식 - window function 회피)
     */
    public function latestRun(): HasOne
    {
        return $this->hasOne(AdminApiFlowRun::class, 'flow_id')
            ->whereIn('id', function ($query) {
                $query->selectRaw('MAX(id)')
                    ->from('admin_api_flow_runs')
                    ->groupBy('flow_id');
            });
    }

    /**
     * 최근 실행 결과 조회 (단일 조회용)
     */
    public function getLatestRunResult(): ?AdminApiFlowRun
    {
        return $this->runs()->latest('created_at')->first();
    }

    /**
     * 플로우 정의에서 스텝 수 반환
     */
    public function getStepCountAttribute(): int
    {
        return count($this->flow_definition['steps'] ?? []);
    }
}