package flow_definition

import (
	"approveflow/app/base"
	"encoding/json"
)

const (
	ActionAutoReject       = "ActionAutoReject"
	ActionReassignApprover = "ReassignApprover"
	ActionAutoApprove      = "ActionAutoApprove"
)

// ApprovalRule 审批规则表
type ApprovalRule struct {
	ID                      int64  `gorm:"primaryKey;autoIncrement" json:"id"`     // 主键ID
	Name                    string `gorm:"type:varchar(100);not null" json:"name"` // 规则名称
	Action                  string `gorm:"type:varchar(50)" json:"action"`         // 执行动作
	Priority                int    `gorm:"type:int;default:0" json:"priority"`     // 优先级
	StepID                  int64  `gorm:"index;not null" json:"step_id"`
	ConditionExpression     string `gorm:"type:text" json:"condition_expression"` // 条件表达式
	ApprovalConditionCommon `gorm:"-"`
	base.Model              // 通用字段，包括创建时间、更新时间等
}

func (rule *ApprovalRule) MarshalBinary() ([]byte, error) {
	return json.Marshal(rule)
}

func (rule *ApprovalRule) UnmarshalBinary(data []byte) error {
	return json.Unmarshal(data, rule)
}

func NewAutoApproveRule() *ApprovalRule {
	return &ApprovalRule{
		ApprovalConditionCommon: ApprovalConditionCommon{},
		Name:                    "自动通过",
		Action:                  ActionAutoApprove,
		Priority:                1,
	}
}

// IsConditionMet 评估规则是否满足条件
func (rule *ApprovalRule) IsConditionMet(data map[string]interface{}) (bool, error) {
	// 解析和评估条件表达式
	result, err := rule.EvaluateCondition(data)
	if err != nil {
		return false, err
	}
	return result, nil
}