// Package validator ...
//
// Description : validator ...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 2024-05-01 22:32
package validator

import (
	"fmt"
	"git.zhangdeman.cn/gateway/validator/define"
	"git.zhangdeman.cn/zhangdeman/consts"
	"git.zhangdeman.cn/zhangdeman/serialize"
	"git.zhangdeman.cn/zhangdeman/util"
	"github.com/tidwall/gjson"
	"reflect"
	"strings"
)

// handleSliceInt ...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 22:30 2024/4/30
func handleSliceInt(inputValue interface{}, rule *define.FieldRule) ([]int64, error) {
	var (
		anySlice []any
		err      error
	)
	if anySlice, err = handleSlice(inputValue, rule); nil != err {
		return nil, err
	}
	intSlice := make([]int64, 0)
	for _, item := range anySlice {
		var itemInt int64
		if err = util.ConvertAssign(&itemInt, item); nil != err {
			return nil, fmt.Errorf("%v : data type expect int, but convert fail : %v", rule.Path, err.Error())
		}
		intSlice = append(intSlice, itemInt)
	}
	return intSlice, nil
}

// handleSliceUint ...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 22:30 2024/4/30
func handleSliceUint(inputValue interface{}, rule *define.FieldRule) ([]uint64, error) {
	var (
		anySlice []any
		err      error
	)
	if anySlice, err = handleSlice(inputValue, rule); nil != err {
		return nil, err
	}
	uintSlice := make([]uint64, 0)
	for _, item := range anySlice {
		var itemUint uint64
		if err = util.ConvertAssign(&itemUint, item); nil != err {
			return nil, fmt.Errorf("%v : data type expect uint, but convert fail : %v", rule.Path, err.Error())
		}
		uintSlice = append(uintSlice, itemUint)
	}
	return uintSlice, nil
}

// handleSliceBool ...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 22:30 2024/4/30
func handleSliceBool(inputValue interface{}, rule *define.FieldRule) ([]bool, error) {
	var (
		anySlice []any
		err      error
	)
	if anySlice, err = handleSlice(inputValue, rule); nil != err {
		return nil, err
	}
	boolSlice := make([]bool, 0)
	for _, item := range anySlice {
		var itemBool bool
		if err = util.ConvertAssign(&itemBool, item); nil != err {
			return nil, fmt.Errorf("%v : data type expect bool, but convert fail : %v", rule.Path, err.Error())
		}
		boolSlice = append(boolSlice, itemBool)
	}
	return boolSlice, nil
}

// handleSliceFloat ...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 22:30 2024/4/30
func handleSliceFloat(inputValue interface{}, rule *define.FieldRule) ([]float64, error) {
	var (
		anySlice []any
		err      error
	)
	if anySlice, err = handleSlice(inputValue, rule); nil != err {
		return nil, err
	}
	floatSlice := make([]float64, 0)
	for _, item := range anySlice {
		var itemFloat float64
		if err = util.ConvertAssign(&itemFloat, item); nil != err {
			return nil, fmt.Errorf("%v : data type expect float, but convert fail : %v", rule.Path, err.Error())
		}
		floatSlice = append(floatSlice, itemFloat)
	}
	return floatSlice, nil
}

// handleSliceSlice ...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 22:30 2024/4/30
func handleSliceSlice(inputValue interface{}, rule *define.FieldRule) ([][]any, error) {
	var (
		anySlice []any
		err      error
	)
	if anySlice, err = handleSlice(inputValue, rule); nil != err {
		return nil, err
	}
	sliceSlice := make([][]any, 0)
	for _, item := range anySlice {
		byteData := serialize.JSON.MarshalForByteIgnoreError(item)
		res := make([]any, 0)
		if err = serialize.JSON.UnmarshalWithNumber(byteData, &res); nil != err {
			return nil, fmt.Errorf("%v : data type is expect [][]any, but convert fail : %v", rule.Path, err.Error())
		}
		sliceSlice = append(sliceSlice, res)
	}
	return sliceSlice, nil
}

// handleSliceMapAny ...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 22:30 2024/4/30
func handleSliceMapAny(inputValue interface{}, rule *define.FieldRule) ([]map[any]any, error) {
	var (
		anySlice []any
		err      error
	)
	if anySlice, err = handleSlice(inputValue, rule); nil != err {
		return nil, err
	}
	mapSlice := make([]map[any]any, 0)
	for _, item := range anySlice {
		byteData := serialize.JSON.MarshalForByteIgnoreError(item)
		jsonRes := gjson.ParseBytes(byteData)
		res := make(map[any]any)
		jsonRes.ForEach(func(key, value gjson.Result) bool {
			res[key.Value()] = value.Value()
			return true
		})
		mapSlice = append(mapSlice, res)
	}
	return mapSlice, nil
}

// handleSliceMapString ...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 21:33 2024/5/1
func handleSliceMapString(inputValue interface{}, rule *define.FieldRule) ([]map[string]any, error) {
	var (
		anySlice []any
		err      error
	)
	if anySlice, err = handleSlice(inputValue, rule); nil != err {
		return nil, err
	}
	mapSlice := make([]map[string]any, 0)
	for _, item := range anySlice {
		byteData := serialize.JSON.MarshalForByteIgnoreError(item)
		jsonRes := gjson.ParseBytes(byteData)
		res := make(map[string]any)
		jsonRes.ForEach(func(key, value gjson.Result) bool {
			res[key.String()] = value.Value()
			return true
		})
		mapSlice = append(mapSlice, res)
	}
	return mapSlice, nil
}

// handleSlice 数组处理
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 21:30 2024/4/30
func handleSlice(inputValue interface{}, rule *define.FieldRule) ([]any, error) {
	inputValType := reflect.TypeOf(inputValue).Kind()
	if inputValType != reflect.Slice && inputValType != reflect.String {
		return nil, fmt.Errorf("%v : data type is expect slice or string, but get %v", rule.Path, inputValType.String())
	}
	if inputValType == reflect.Slice {
		inputValue = serialize.JSON.MarshalForStringIgnoreError(inputValue)
		// 重置配置
		if nil == rule.SliceConfig {
			rule.SliceConfig = &define.SliceConfig{
				Mode:               consts.DataSliceModelMarshal,
				DisableIgnoreEmpty: false,
				SplitChar:          "",
			}
		} else {
			rule.SliceConfig.Mode = consts.DataSliceModelMarshal
		}
	}
	var (
		err      error
		anySlice []any
	)

	if inputStr, ok := inputValue.(string); ok {
		if anySlice, err = handleSliceString(inputStr, rule); nil != err {
			return nil, err
		}
	}
	if err = validateSlice(anySlice, rule); nil != err {
		return nil, err
	}

	return anySlice, nil
}

// handleSliceString ...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 22:06 2024/4/30
func handleSliceString(inputStr string, rule *define.FieldRule) ([]any, error) {
	if nil == rule.SliceConfig {
		return nil, fmt.Errorf("%v : data type is slice, but get string", rule.Path)
	}
	if rule.SliceConfig.Mode == consts.DataSliceModelReal {
		return nil, fmt.Errorf("%v : data type expect real slice, but get string", rule.Path)
	}
	var (
		err error
		res []any
	)
	if rule.SliceConfig.Mode == consts.DataSliceModelMarshal { // json序列化之后的
		if err = serialize.JSON.UnmarshalWithNumber([]byte(inputStr), &res); nil != err {
			return nil, fmt.Errorf("%v : data type expect marshal slice, but can not convert", rule.Path)
		}
		return res, nil
	}
	if rule.SliceConfig.Mode == consts.DataSliceModelWithSplitChar { // 指定字符串切割
		strArr := strings.Split(inputStr, rule.SliceConfig.SplitChar)
		res = make([]any, 0)
		for _, item := range strArr {
			if !rule.SliceConfig.DisableIgnoreEmpty && len(item) == 0 {
				// 没禁用忽略空字符串
				continue
			}
			res = append(res, item)
		}
		return res, nil
	}
	return nil, fmt.Errorf("%v : data type is slice, but rule mode [%v] is not supported", rule.Path, rule.SliceConfig.Mode)
}

// validateSlice ...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 09:39 2024/5/1
func validateSlice(anySlice []any, rule *define.FieldRule) error {

	// 验证
	if nil == rule.ValueLimit {
		return nil
	}

	if nil != rule.ValueLimit.Min && float64(len(anySlice)) < *rule.ValueLimit.Min {
		return fmt.Errorf("%v : data type is slice, min length is [%v], real length is [%v]", rule.Path, *rule.ValueLimit.Min, len(anySlice))
	}

	if nil != rule.ValueLimit.Max && float64(len(anySlice)) > *rule.ValueLimit.Max {
		return fmt.Errorf("%v : data type is slice, max length is [%v], real length is [%v]", rule.Path, *rule.ValueLimit.Max, len(anySlice))
	}

	enumTable := make(map[string]bool)
	for _, item := range rule.ValueLimit.EnumList {
		enumTable[item] = true
	}

	for _, itemVal := range anySlice {
		if _, exist := enumTable[fmt.Sprintf("%v", itemVal)]; !exist {
			return fmt.Errorf("%v : data type is slice, slice value [%v] is not un enum list", rule.Path, itemVal)
		}
	}
	return nil
}