golib/infra/ii/item_init.go

package ii

import (
	"fmt"
	"regexp"
	"strings"
)

func (c *ItemInfo) init() error {
	if err := c.initEnums(); err != nil {
		return err
	}
	if err := c.initValue(); err != nil {
		return err
	}
	if err := c.initPattern(); err != nil {
		return err
	}
	c.initMap()
	c.initFieldMap()
	return nil
}

// initFieldMap 创建字段索引
func (c *ItemInfo) initFieldMap() {
	if c.fieldMap == nil {
		c.fieldMap = make(map[string]int)
	}
	for i := 0; i < len(c.Fields); i++ {
		c.fieldMap[c.Fields[i].Name] = i
	}
}

// initEnums 初始化枚举类型值
func (c *ItemInfo) initEnums() error {
	for i := 0; i < len(c.Fields); i++ {
		length := len(c.Fields[i].Enums)
		enum := make([]any, length)
		for j := 0; j < length; j++ {
			val, err := c.Fields[i].Convert(c.Fields[i].Enums[j])
			if err != nil {
				return fmt.Errorf("%s.%s: initEnums: %s", c.Name, c.Fields[i].Name, err)
			}
			enum[j] = val
		}
		c.Fields[i].enums = enum
	}
	return nil
}

// initValue 初始化默认值类型
func (c *ItemInfo) initValue() error {
	for i := 0; i < len(c.Fields); i++ {
		if strings.TrimSpace(c.Fields[i].Value) == "" {
			c.Fields[i].value = getDefaultValueWith(c.Fields[i].Type)
			continue
		}
		val, err := c.Fields[i].Convert(c.Fields[i].Value)
		if err != nil {
			return fmt.Errorf("%s.%s: initValue: %s", c.Name, c.Fields[i].Name, err)
		}
		c.Fields[i].value = val
	}
	return nil
}

func (c *ItemInfo) initPattern() error {
	for i := 0; i < len(c.Fields); i++ {
		if c.Fields[i].Pattern != "" {
			regex, err := regexp.Compile(c.Fields[i].Pattern)
			if err != nil {
				return fmt.Errorf("%s.%s: initPattern: %s", c.Name, c.Fields[i].Name, err)
			}
			c.Fields[i].pattern = regex
		}
	}
	return nil
}

// initMap 初始化必填和唯一
func (c *ItemInfo) initMap() {
	c.requiredMap = make(map[string]int)
	c.uniqueMap = make(map[string]int)
	for idx, field := range c.Fields {
		if field.Required {
			c.requiredMap[field.Name] = idx
		}
		if field.Unique {
			c.uniqueMap[field.Name] = idx
		}
	}
}