package convx

import (
	"strconv"

	"errors"
)

// interface 转 float64
func ToFloat64(val interface{}) (f float64, err error) {
	if v, ok := val.(string); ok {
		f, err = strconv.ParseFloat(v, 64)
	} else if v, ok := val.(float64); ok {
		return v, nil
	} else if v, ok := val.(float32); ok {
		return float64(v), nil
	} else if v, ok := val.(int); ok {
		return float64(v), nil
	} else if v, ok := val.(int8); ok {
		return float64(v), nil
	} else if v, ok := val.(int16); ok {
		return float64(v), nil
	} else if v, ok := val.(int32); ok {
		return float64(v), nil
	} else if v, ok := val.(int64); ok {
		return float64(v), nil
	} else if v, ok := val.(uint); ok {
		return float64(v), nil
	} else if v, ok := val.(uint8); ok {
		return float64(v), nil
	} else if v, ok := val.(uint16); ok {
		return float64(v), nil
	} else if v, ok := val.(uint32); ok {
		return float64(v), nil
	} else if v, ok := val.(uint64); ok {
		return float64(v), nil
	} else if v, ok := val.(bool); ok {
		if v {
			return 1, nil
		} else {
			return 0, nil
		}
	} else {
		return 0, errors.New("类型转换失败")
	}
	return
}