package common

import (
	"bytes"
	"encoding/json"
	"fmt"
	"log"
	"net"
	"os"
	"os/exec"
	"regexp"
	"strings"

	"github.com/gofiber/fiber/v2"
)

type RouteGroups struct {
	Api    fiber.Router
	Server fiber.Router
	Config fiber.Router
	Lookup fiber.Router
	StateHistory fiber.Router
}

func CheckError(err error) {
	if err != nil {
		log.Printf("Error occured. %v", err)
	}
}

var matchFirstCap = regexp.MustCompile("(.)([A-Z][a-z]+)")
var matchAllCap = regexp.MustCompile("([a-z0-9])([A-Z])")

func ToSnakeCase(str string) string {
	snake := matchFirstCap.ReplaceAllString(str, "${1}_${2}")
	snake = matchAllCap.ReplaceAllString(snake, "${1}_${2}")
	return strings.ToLower(snake)
}

func GetIP() string {
	addrs, err := net.InterfaceAddrs()
	if err != nil {
		os.Stderr.WriteString("Oops: " + err.Error() + "\n")
		os.Exit(1)
	}

	for _, a := range addrs {
		if ipnet, ok := a.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
			if ipnet.IP.To4() != nil {
				return ipnet.IP.String()
			}
		}
	}
	return ""
}

func Find[T any](lst *[]T, callback func(item *T) bool) *T {
	for _, item := range *lst {
		if callback(&item) {
			return &item
		}
	}
	return nil
}

func RunElevatedCommand(command string, service string) (string, error) {
	cmd := exec.Command("powershell", "-nologo", "-noprofile", ".\\nssm", command, service)
	// cmd := exec.Command("powershell", "-nologo", "-noprofile", "-File", "run_sc.ps1", command, service)
	output, err := cmd.CombinedOutput()
	if err != nil {
		return "", fmt.Errorf("error: %v, output: %s", err, string(output))
	}
	return string(output), nil
}

func IndentJson(body []byte) ([]byte, error) {
	newBody := new([]byte)
	unmarshaledBody := bytes.NewBuffer(*newBody)
	err := json.Indent(unmarshaledBody, body, "", "  ")
	if err != nil {
		return nil, err
	}
	return unmarshaledBody.Bytes(), nil
}