// Package api_doc ...
//
// Description : api_doc ...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 2025-02-12 22:15
package api_doc

import (
	"git.zhangdeman.cn/gateway/api-doc/define"
	"reflect"
	"strconv"
	"strings"
)

var (
	ParseStructField = parseStructField{}
)

type parseStructField struct {
}

// GetParamName 获取参数名称
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 21:58 2025/2/11
func (psf parseStructField) GetParamName(structField reflect.StructField) string {
	paramNameTagList := []string{
		define.TagJson, define.TagForm,
		define.TagXml, define.TagYaml,
		define.TagYml,
	}
	for _, tag := range paramNameTagList {
		tagVal := structField.Tag.Get(tag)
		if tagVal != "" {
			return tagVal
		}
	}
	// 未设置相关字段, 则字段名即为参数名
	return structField.Name
}

// GetParamDesc ...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 22:01 2025/2/11
func (psf parseStructField) GetParamDesc(structField reflect.StructField) string {
	descTagList := []string{define.TagDesc, define.TagDescription}
	for _, tag := range descTagList {
		tagVal := structField.Tag.Get(tag)
		if tagVal != "" {
			return tagVal
		}
	}
	// 没有显示的设置参数描述, 则使用参数名作为参数描述
	return psf.GetParamName(structField)
}

// GetDefaultValue 获取默认值
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 22:05 2025/2/11
func (psf parseStructField) GetDefaultValue(structField reflect.StructField) any {
	defaultTagList := []string{define.TagD, define.TagDefault}
	fieldType := structField.Type.Kind().String()
	for _, tag := range defaultTagList {
		if val, exist := structField.Tag.Lookup(tag); exist && val != "" {
			if strings.HasPrefix(fieldType, "int") {
				i, _ := strconv.Atoi(val)
				return i
			}
			if strings.HasPrefix(fieldType, "uint") {
				uintVal, _ := strconv.ParseUint(val, 10, 64)
				return uintVal
			}
			if strings.HasPrefix(fieldType, "float") {
				floatVal, _ := strconv.ParseFloat(val, 64)
				return floatVal
			}
			if strings.HasPrefix(fieldType, "string") {
				return val
			}
			if strings.HasPrefix(fieldType, "bool") {
				if val == "true" {
					return true
				} else {
					return false
				}
			}
			return val
		}
	}
	return nil
}

// GetValidateRule 获取验证规则
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 15:30 2025/2/13
func (psf parseStructField) GetValidateRule(structField reflect.StructField) string {
	defaultTagList := []string{define.TagValidate, define.TagBinding}
	for _, tag := range defaultTagList {
		if tagVal, exist := structField.Tag.Lookup(tag); exist && len(tagVal) > 0 {
			return tagVal
		}
	}
	return ""
}

// Deprecated 是否弃用
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 21:12 2025/2/13
func (psf parseStructField) Deprecated(structField reflect.StructField) bool {
	defaultTagList := []string{define.TagDeprecated}
	for _, tag := range defaultTagList {
		if tagVal, exist := structField.Tag.Lookup(tag); exist && (tagVal == "1" || strings.ToLower(tagVal) == "true") {
			return true
		}
	}
	return false
}