// *** WARNING: this file was generated by test. ***
// *** Do not edit by hand unless you're certain you know what you are doing! ***

package mod2

import (
	"fmt"
	"os"
	"reflect"
	"regexp"
	"strconv"
	"strings"

	"github.com/blang/semver"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
)

type envParser func(v string) interface{}

func parseEnvBool(v string) interface{} {
	b, err := strconv.ParseBool(v)
	if err != nil {
		return nil
	}
	return b
}

func parseEnvInt(v string) interface{} {
	i, err := strconv.ParseInt(v, 0, 0)
	if err != nil {
		return nil
	}
	return int(i)
}

func parseEnvFloat(v string) interface{} {
	f, err := strconv.ParseFloat(v, 64)
	if err != nil {
		return nil
	}
	return f
}

func parseEnvStringArray(v string) interface{} {
	var result pulumi.StringArray
	for _, item := range strings.Split(v, ";") {
		result = append(result, pulumi.String(item))
	}
	return result
}

func getEnvOrDefault(def interface{}, parser envParser, vars ...string) interface{} {
	for _, v := range vars {
		if value := os.Getenv(v); value != "" {
			if parser != nil {
				return parser(value)
			}
			return value
		}
	}
	return def
}

// PkgVersion uses reflection to determine the version of the current package.
func PkgVersion() (semver.Version, error) {
	type sentinal struct{}
	pkgPath := reflect.TypeOf(sentinal{}).PkgPath()
	re := regexp.MustCompile("^.*/pulumi-example/sdk(/v\\d+)?")
	if match := re.FindStringSubmatch(pkgPath); match != nil {
		vStr := match[1]
		if len(vStr) == 0 { // If the version capture group was empty, default to v1.
			return semver.Version{Major: 1}, nil
		}
		return semver.MustParse(fmt.Sprintf("%s.0.0", vStr[2:])), nil
	}
	return semver.Version{}, fmt.Errorf("failed to determine the package version from %s", pkgPath)
}

// isZero is a null safe check for if a value is it's types zero value.
func isZero(v interface{}) bool {
	if v == nil {
		return true
	}
	return reflect.ValueOf(v).IsZero()
}