<?php

declare(strict_types=1);

namespace plugin\produce\app\validate;

use core\base\BaseValidate;
use Illuminate\Validation\Rule;
use plugin\produce\app\model\StepRelation;

class StepRelationValidate extends BaseValidate
{
    public function rules(): array
    {
        $id = request()->route?->param('id');
        $fromStepId = (string) (request()->input('from_step_id') ?? '');
        $toStepId = (string) (request()->input('to_step_id') ?? '');
        $relationType = (string) (request()->input('relation_type') ?? 'normal');

        return [
            'from_step_id' => ['required', 'integer'],
            'to_step_id' => ['required', 'integer', 'different:from_step_id'],
            'relation_type' => [
                'required',
                'max:20',
                Rule::in(['normal', 'exception']),
                Rule::unique(StepRelation::class, 'relation_type')
                    ->where(fn ($query) => $query
                        ->where('from_step_id', $fromStepId)
                        ->where('to_step_id', $toStepId)
                    )
                    ->ignore($id, 'id')
            ],
            'flow_condition' => [
                'nullable',
                function (string $attribute, mixed $value, \Closure $fail) {
                    if ($value === null || $value === '') {
                        return;
                    }

                    if (is_array($value)) {
                        return;
                    }

                    if (!is_string($value)) {
                        $fail('流转条件必须为有效的JSON字符串');
                        return;
                    }

                    json_decode($value, true);
                    if (json_last_error() !== JSON_ERROR_NONE) {
                        $fail('流转条件必须为有效的JSON字符串');
                    }
                }
            ],
            'priority' => ['nullable', 'integer', 'min:0'],
            'description' => ['nullable', 'max:65535'],
            'sort' => ['nullable', 'integer', 'min:0'],
            'status' => ['nullable', 'integer', 'in:0,1'],
        ];
    }

    protected array $message = [
        'from_step_id.required' => '源步骤不能为空',
        'from_step_id.integer' => '源步骤格式不正确',
        'to_step_id.required' => '目标步骤不能为空',
        'to_step_id.integer' => '目标步骤格式不正确',
        'to_step_id.different' => '目标步骤不能与源步骤相同',
        'relation_type.required' => '关系类型不能为空',
        'relation_type.max' => '关系类型长度不能超过20个字符',
        'relation_type.in' => '关系类型值不正确',
        'relation_type.unique' => '该步骤关系已存在',
        'priority.integer' => '优先级必须为整数',
        'priority.min' => '优先级不能小于0',
        'description.max' => '描述内容过长',
        'sort.integer' => '排序必须为整数',
        'sort.min' => '排序不能小于0',
        'status.integer' => '状态格式不正确',
        'status.in' => '状态值不正确',
    ];

    protected array $scene = [
        'store' => ['from_step_id', 'to_step_id', 'relation_type', 'flow_condition', 'priority', 'description', 'sort', 'status'],
        'update' => ['from_step_id', 'to_step_id', 'relation_type', 'flow_condition', 'priority', 'description', 'sort', 'status'],
    ];
}