package matsformula

import (
	"appPlatform/overall/publicmethod"
	"fmt"
	"math"
	"strconv"
	"strings"

	"github.com/dengsgo/math-engine/engine"
	"github.com/gin-gonic/gin"
)

/*
*
@ 作者: 秦东
@ 时间: 2024-01-02 08:53:21
@ 功能: 解析数学公式
@ 参数

	#

@ 返回值

	#

@ 方法原型

	#
*/
func (a *ApiMethod) AnalyticalMathematicalFormulas(c *gin.Context) {
	var requestsData Formula
	err := c.ShouldBindJSON(&requestsData)
	if err != nil {
		publicmethod.Result(1, err, c)
		return
	}
	mathsStr := requestsData.Val
	for _, v := range requestsData.FormJson {
		zhi := strconv.FormatFloat(v.Val, 'f', -1, 64)
		mathsStr = strings.Replace(mathsStr, v.Keys, zhi, 1)
	}

	sendData := publicmethod.MapOut[string]()

	sendData["mathsStr"] = mathsStr

	runMaths, err := AnalyticCalculation(mathsStr, 0, 2)

	sendData["runMaths"] = runMaths
	sendData["err"] = err

	publicmethod.Result(0, sendData, c)
}

/*
*
@ 作者: 秦东
@ 时间: 2024-01-08 10:46:15
@ 功能: 解析数学公式
@ 参数

	#mathsFormula			组合后的公式
	#takingMethod			结果保留形式 0:原始数据； 1：四舍五入；2：向上取整；3：向下取整；4：舍去
	#digit					保留位数

@ 返回值

	#

@ 方法原型

	#
*/
func AnalyticCalculation(mathsFormula string, takingMethod, digit int) (runMaths float64, err error) {
	//自定义一个Sum计算
	engine.RegFunction("sum", -1, func(expr ...engine.ExprAST) float64 {
		var sum float64
		for _, v := range expr {
			sum = sum + engine.ExprASTResult(v)
		}
		return sum
	})
	engine.RegFunction("average", -1, func(expr ...engine.ExprAST) float64 {
		var sum float64
		num := 0
		for _, v := range expr {
			sum = sum + engine.ExprASTResult(v)
			num++
		}
		if num > 0 {
			sum = sum / float64(num)
		}
		return sum
	})
	//解析、执行数学公式字符串
	runMaths, err = engine.ParseAndExec(mathsFormula)
	switch takingMethod {
	case 1:
		// fmt.Printf("1:%v--1-->%v---->%v\n", takingMethod, digit, runMaths)
		runMaths = publicmethod.DecimalEs(runMaths, digit)
		// fmt.Printf("1:%v---->%v---->%v\n", takingMethod, digit, runMaths)
	case 2:
		runMaths = math.Ceil(runMaths)
		// fmt.Printf("2:%v---->%v---->%v\n", takingMethod, digit, runMaths)
	case 3:
		runMaths = math.Floor(runMaths)
		// fmt.Printf("3:%v---->%v---->%v\n", takingMethod, digit, runMaths)
	case 4:
		runMaths = float64(int64(runMaths))
		// fmt.Printf("4:%v---->%v---->%v\n", takingMethod, digit, runMaths)
	default:
		// fmt.Printf("5:%v---->%v---->%v\n", takingMethod, digit, runMaths)
		return
	}
	return
}

/*
*
@ 作者: 秦东
@ 时间: 2024-01-09 14:48:06
@ 功能: 数学计算
@ 参数

	#

@ 返回值

	#

@ 方法原型

	#
*/
func (a *ApiMethod) MathematicalCalculations(c *gin.Context) {
	var requestsData ReceiveMathsFornula
	err := c.ShouldBindJSON(&requestsData)
	if err != nil {
		publicmethod.Result(1, err, c)
		return
	}
	zhi := make(map[string]float64)
	var formulaList []FormJsonInfor
	for i, v := range requestsData.MathsFornula {
		var formulaCont FormJsonInfor
		formulaCont.Keys = i
		formulaCont.Val = v.MathsFormula
		formulaList = append(formulaList, formulaCont)
		if i != requestsData.FieldKey {
			zhiVal := FieldToValue(v.MathsFormula, requestsData.KeyVal, v.TakingMethod, v.Digit)
			zhi[i] = zhiVal
		}
	}
	// publicmethod.Result(10000, zhi, c)
	sendData := publicmethod.MapOut[string]()
	sendData["formulaList"] = formulaList
	sendData["zhi"] = zhi
	sendData["requestsData"] = requestsData
	publicmethod.Result(0, zhi, c)
}

/*
*
@ 作者: 秦东
@ 时间: 2024-01-09 15:52:41
@ 功能: 解析计算数值
@ 参数

	#formula				计算公式
	#formKeyVal 			表单字段
	#takingMethod			结果保留形式 1：四舍五入；2：向上取整；3：向下取整；4：舍去
	#digit					保留位数

@ 返回值

	#

@ 方法原型

	#
*/
func FieldToValue(formula string, formKeyVal map[string]interface{}, takingMethod, digit int) (runMaths float64) {
	for i, v := range formKeyVal {
		if val, isOk := v.(string); isOk {
			if val == "" {
				val = "0"
			}
			formula = strings.Replace(formula, i, val, -1)
		}
		if val, isOk := v.(int); isOk {
			valStr := strconv.Itoa(val)
			formula = strings.Replace(formula, i, valStr, -1)
		}
		if val, isOk := v.(int64); isOk {
			valStr := strconv.FormatInt(val, 10)
			formula = strings.Replace(formula, i, valStr, -1)
		}
		if val, isOk := v.(float32); isOk {
			valStr := strconv.FormatFloat(float64(val), 'f', -1, 64)
			formula = strings.Replace(formula, i, valStr, -1)
		}
		if val, isOk := v.(float64); isOk {
			valStr := strconv.FormatFloat(val, 'f', -1, 64)
			formula = strings.Replace(formula, i, valStr, -1)
		}
	}
	formula = strings.Replace(formula, "，", ",", -1)
	smaillMathsStr := strings.ToLower(formula)
	fmt.Printf("smaillMathsStr===>%v\n", smaillMathsStr)
	runMaths, err := AnalyticCalculation(smaillMathsStr, takingMethod, digit)
	if err != nil {
		runMaths = 0
		return
	}

	return
}

/*
*
@ 作者: 秦东
@ 时间: 2024-01-09 15:00:33
@ 功能: 数学公式字段转化数值
@ 参数

	#

@ 返回值

	#

@ 方法原型

	#
*/
func FieldToValues(formulaList []FormJsonInfor, key string, val string, takingMethod, digit int) map[string]float64 {
	var fieldVal map[string]float64
	for _, v := range formulaList {
		mathsStr := strings.Replace(v.Val, key, val, -1)
		mathsStr = strings.Replace(mathsStr, "，", ",", -1)
		smaillMathsStr := strings.ToLower(mathsStr)
		fmt.Printf("smaillMathsStr===>%v\n", smaillMathsStr)
		runMaths, err := AnalyticCalculation(smaillMathsStr, takingMethod, digit)
		fmt.Printf("runMaths===>%v\n err===>%v\n", runMaths, err)
		// if err == nil {
		// 	switch takingMethod {
		// 	case 2:
		// 		fieldVal[v.Keys] = math.Ceil(runMaths)
		// 	case 3:
		// 		fieldVal[v.Keys] = math.Floor(runMaths)
		// 	case 4:
		// 		fieldVal[v.Keys] = math.Floor(runMaths)
		// 	default:
		// 		fieldVal[v.Keys] = math.Round(publicmethod.DecimalEs(runMaths, digit))
		// 	}
		// } else {
		// 	fieldVal[v.Keys] = 0
		// }
	}
	return fieldVal
}