// This is a simple example
package repostatus

import (
	"errors"
	"io/ioutil"
	"os"
	"os/exec"
	"os/user"
	"path/filepath"
	"regexp"
	"strings"
	"syscall"

	"go.wit.com/log"
)

func run(path string, thing string, cmdline string) string {
	parts := strings.Split(cmdline, " ")
	// Create the command
	cmd := exec.Command(thing, parts...)

	// Set the working directory
	cmd.Dir = path

	// Execute the command
	output, err := cmd.CombinedOutput()
	tmp := string(output)
	tmp = strings.TrimSpace(tmp)

	if err != nil {
		log.Log(WARN, "run()", path, thing, cmdline, "=", tmp)
		log.Error(err, "cmd error'd out", parts)
		return ""
	}

	// Print the output
	log.Log(INFO, "run()", path, thing, cmdline, "=", tmp)
	return tmp
}

// goes in one directory so it gets remote branch names
func listFiles(directory string) []string {
	var files []string
	fileInfo, err := os.ReadDir(directory)
	if err != nil {
		log.Error(err)
		return nil
	}

	for _, file := range fileInfo {
		if file.IsDir() {
			dirname := file.Name()
			newdir, _ := os.ReadDir(directory + "/" + dirname)
			for _, file := range newdir {
				if !file.IsDir() {
					files = append(files, dirname+"/"+file.Name())
				}
			}
		} else {
			files = append(files, file.Name())
		}
	}

	return files
}

/*
// string handling examples that might be helpful for normalizeInt()
isAlpha := regexp.MustCompile(`^[A-Za-z]+$`).MatchString

for _, username := range []string{"userone", "user2", "user-three"} {
    if !isAlpha(username) {
        log.Log(GUI, "%q is not valid\n", username)
    }
}

const alpha = "abcdefghijklmnopqrstuvwxyz"

func alphaOnly(s string) bool {
   for _, char := range s {
      if !strings.Contains(alpha, strings.ToLower(string(char))) {
         return false
      }
   }
   return true
}
*/

func normalizeVersion(s string) string {
	// reg, err := regexp.Compile("[^a-zA-Z0-9]+")
	parts := strings.Split(s, "-")
	if len(parts) == 0 {
		return ""
	}
	reg, err := regexp.Compile("[^0-9.]+")
	if err != nil {
		log.Log(WARN, "normalizeVersion() regexp.Compile() ERROR =", err)
		return parts[0]
	}
	clean := reg.ReplaceAllString(parts[0], "")
	log.Log(INFO, "normalizeVersion() s =", clean)
	return clean
}

func splitVersion(version string) (a, b, c string) {
	tmp := normalizeVersion(version)
	parts := strings.Split(tmp, ".")
	switch len(parts) {
	case 1:
		return parts[0], "", ""
	case 2:
		return parts[0], parts[1], ""
	default:
		return parts[0], parts[1], parts[2]
	}
}

func (rs *RepoStatus) RunCmd(parts []string) (error, string) {
	path := rs.realPath.String()
	err, _, output := RunCmd(path, parts)
	if err != nil {
		log.Log(WARN, "cmd:", parts)
		log.Log(WARN, "ouptput:", output)
		log.Log(WARN, "failed with error:", err)
	}
	return err, output
}

// temp hack. fix this
func runCmd(path string, parts []string) (error, bool, string) {
	return RunCmd(path, parts)
}

func RunCmd(workingpath string, parts []string) (error, bool, string) {
	if len(parts) == 0 {
		log.Warn("command line was empty")
		return errors.New("empty"), false, ""
	}
	if parts[0] == "" {
		log.Warn("command line was empty")
		return errors.New("empty"), false, ""
	}
	thing := parts[0]
	parts = parts[1:]
	log.Log(INFO, "working path =", workingpath, "thing =", thing, "cmdline =", parts)

	// Create the command
	cmd := exec.Command(thing, parts...)

	// Set the working directory
	cmd.Dir = workingpath

	// Execute the command
	output, err := cmd.CombinedOutput()
	if err != nil {
		if thing == "git" {
			log.Log(INFO, "git ERROR. maybe okay", workingpath, "thing =", thing, "cmdline =", parts)
			log.Log(INFO, "git ERROR. maybe okay err =", err)
			if err.Error() == "exit status 1" {
				log.Log(INFO, "git ERROR. normal exit status 1")
				if parts[0] == "diff-index" {
					log.Log(INFO, "git normal diff-index when repo dirty")
					return nil, false, "git diff-index exit status 1"
				}
			}
		}

		log.Log(WARN, "ERROR working path =", workingpath, "thing =", thing, "cmdline =", parts)
		log.Log(WARN, "ERROR working path =", workingpath, "thing =", thing, "cmdline =", parts)
		log.Log(WARN, "ERROR working path =", workingpath, "thing =", thing, "cmdline =", parts)
		log.Error(err)
		log.Warn("output was", string(output))
		log.Warn("cmd exited with error", err)
		// panic("fucknuts")
		return err, false, string(output)

		// The command failed (non-zero exit status)
		if exitErr, ok := err.(*exec.ExitError); ok {
			// Assert that it is an exec.ExitError and get the exit code
			if status, ok := exitErr.Sys().(syscall.WaitStatus); ok {
				log.Warn("Exit Status: %d\n", status.ExitStatus())
			}
		} else {
			log.Warn("cmd.Run() failed with %s\n", err)
		}
	}

	tmp := string(output)
	tmp = strings.TrimSpace(tmp)

	// Print the output
	return nil, true, tmp
}

// Set the path to the package
func getfiles(pathToPackage string) {
	// List files in the directory
	err := filepath.Walk(pathToPackage, nil) // compiles but crashes
	if err == nil {
		log.Log(INFO, "directory ok", pathToPackage)
	} else {
		log.Warn("directory wrong", pathToPackage)
	}
}

func IsDirectory(path string) bool {
	info, err := os.Stat(path)
	if err != nil {
		return false
	}
	return info.IsDir()
}

func VerifyLocalGoRepo(gorepo string) bool {
	// Get current user
	usr, err := user.Current()
	if err != nil {
		log.Error(err, "VerifyLocalGoRepo() thinks you should switch to Ultrix")
		return false
	}

	// Form the path to the home Git directory
	gitDir := filepath.Join(usr.HomeDir, "go/src/", gorepo, ".git")

	log.Log(INFO, "go directory:", gitDir)
	return IsDirectory(gitDir)
}

func readFileToString(filename string) (string, error) {
	data, err := ioutil.ReadFile(filename)
	if err != nil {
		return "", err
	}
	return strings.TrimSpace(string(data)), nil
}