package repostatus

import (
	"errors"
	"fmt"
	"io/ioutil"
	"os"
	"os/exec"
	"os/user"
	"path/filepath"
	"regexp"
	"strconv"
	"strings"
	"time"

	"go.wit.com/lib/gui/shell"
	"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) RunCmdEcho(parts []string) (error, string) {
	log.Info("RunCmdEcho()", parts)
	return rs.RunCmd(parts)
}

func (rs *RepoStatus) RunCmd(parts []string) (error, string) {
	path := rs.realPath.String()
	err, _, output := shell.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 shell.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)

		/* todo: see if there is a way to get the exit value
		// 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 (rs *RepoStatus) Exists(filename string) bool {
	usr, err := user.Current()
	if err != nil {
		log.Error(err, "Exists() error: could not determine what your username is")
		return false
	}
	testf := filepath.Join(usr.HomeDir, "go/src/", rs.String(), filename)
	if Exists(testf) {
		return true
	}
	return false
}

func (rs *RepoStatus) mtime(filename string) (time.Time, error) {
	pathf := filepath.Join(rs.Path(), filename)
	statf, err := os.Stat(pathf)
	if err == nil {
		return statf.ModTime(), nil
	}
	log.Log(REPOWARN, "mtime() error", pathf, err)
	return time.Now(), err
}

// returns true if the file exists
func Exists(file string) bool {
	_, err := os.Stat(file)
	if err != nil {
		return false
	}
	return true
}

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

// converts a git for-each-ref date. "Wed Feb 7 10:13:38 2024 -0600"
func getGitDateStamp(gitdefault string) (time.Time, string, string) {
	// now := time.Now().Format("Wed Feb 7 10:13:38 2024 -0600")
	const gitLayout = "Mon Jan 2 15:04:05 2006 -0700"
	tagTime, err := time.Parse(gitLayout, gitdefault)
	if err != nil {
		log.Warn("GOT THIS IN PARSE AAA." + gitdefault + ".AAA")
		log.Warn(err)
		return time.Now(), "Feb 1 12:34:56 1978 -0600", ""
	}
	return tagTime, gitdefault, getDurationStamp(tagTime)
}
func getRawDateStamp(raw string) (time.Time, string, string) {
	parts := strings.Split(raw, " ")
	if len(parts) == 0 {
		// raw was blank here
		// return "Jan 4 1977", "40y" // eh, why not. it'll be easy to grep for this
		return time.Now(), "Jan 4 1977", "40y" // eh, why not. it'll be easy to grep for this
	}
	i, err := strconv.ParseInt(parts[0], 10, 64) // base 10 string, return int64
	if err != nil {
		log.Warn("Error converting timestamp:", raw)
		log.Warn("Error converting timestamp err =", err)
		return time.Now(), "", ""
	}

	// Parse the Unix timestamp into a time.Time object
	gitTagDate := time.Unix(i, 0)
	return gitTagDate, gitTagDate.UTC().Format("2006/01/02 15:04:05 UTC"), getDurationStamp(gitTagDate)
}

func getDurationStamp(t time.Time) string {

	// Get the current time
	currentTime := time.Now()

	// Calculate the duration between t current time
	duration := currentTime.Sub(t)

	return formatDuration(duration)
}

func formatDuration(d time.Duration) string {
	seconds := int(d.Seconds()) % 60
	minutes := int(d.Minutes()) % 60
	hours := int(d.Hours()) % 24
	days := int(d.Hours()) / 24
	years := int(d.Hours()) / (24 * 365)

	result := ""
	if years > 0 {
		result += fmt.Sprintf("%dy ", years)
		return result
	}
	if days > 0 {
		result += fmt.Sprintf("%dd ", days)
		return result
	}
	if hours > 0 {
		result += fmt.Sprintf("%dh ", hours)
		return result
	}
	if minutes > 0 {
		result += fmt.Sprintf("%dm ", minutes)
		return result
	}
	if seconds > 0 {
		result += fmt.Sprintf("%ds", seconds)
	}
	return result
}

func (rs *RepoStatus) XtermNohup(cmdline string) {
	shell.XtermCmd(rs.Path(), []string{cmdline})
}
func (rs *RepoStatus) Xterm(cmdline string) {
	shell.XtermCmd(rs.Path(), []string{cmdline})
}
func (rs *RepoStatus) XtermWait(cmdline string) {
	shell.XtermCmdWait(rs.Path(), []string{cmdline})
}

/*
func (rs *RepoStatus) XtermNohup(args []string) {
	var argsX = []string{"xterm", "-geometry", "120x40"}
	argsX = append(argsX, "-e", "bash", "-c")
	argsX = append(argsX, args...)
	log.Info("xterm cmd=", argsX)
	// set less to not exit on small diff's
	os.Setenv("LESS", "-+F -+X -R")
	cmd := exec.Command("nohup", argsX...)
	path := rs.realPath.String()
	cmd.Dir = path
	log.Info("path =", path)
	log.Info("cmd =", strings.Join(args, " "))
	if err := cmd.Run(); err != nil {
		log.Info("xterm.Run() failed")
		log.Info("path =", path)
		log.Info("cmd =", argsX)
	} else {
		log.Info("xterm.Run() worked")
		log.Info("path =", path)
		log.Info("cmd =", argsX)
	}
}
*/

/*
func (rs *RepoStatus) Xterm(args []string) {
	var argsX = []string{"-geometry", "120x40"}
	argsX = append(argsX, "-e", "bash", "-c")
	argsX = append(argsX, args...)
	log.Info("xterm cmd=", argsX)
	// set less to not exit on small diff's
	os.Setenv("LESS", "-+F -+X -R")
	cmd := exec.Command("xterm", argsX...)
	path := rs.realPath.String()
	cmd.Dir = path
	if err := cmd.Run(); err != nil {
		log.Info("xterm.Run() failed")
		log.Info("path =", path)
		log.Info("cmd = xterm", argsX)
	} else {
		log.Info("xterm.Run() worked")
		log.Info("path =", path)
		log.Info("cmd = xterm", argsX)
	}
}
*/

/*
func (rs *RepoStatus) XtermHold(args []string) {
	var argsX = []string{"-hold", "-geometry", "120x40"}
	tmp := strings.Join(args, " ") + ";bash"
	argsX = append(argsX, "-e", "bash", "-c", tmp)
	argsX = append(argsX, args...)
	log.Info("xterm cmd=", argsX)
	// set less to not exit on small diff's
	os.Setenv("LESS", "-+F -+X -R")
	cmd := exec.Command("xterm", argsX...)
	path := rs.realPath.String()
	cmd.Dir = path
	if err := cmd.Run(); err != nil {
		log.Info("xterm.Run() failed")
		log.Info("path =", path)
		log.Info("cmd = xterm", argsX)
	} else {
		log.Info("xterm.Run() worked")
		log.Info("path =", path)
		log.Info("cmd = xterm", argsX)
	}
}
*/

func (rs *RepoStatus) XtermBash(args []string) {
	var argsX = []string{"-geometry", "120x40"}
	tmp := strings.Join(args, " ") + ";bash"
	argsX = append(argsX, "-e", "bash", "-c", tmp)
	argsX = append(argsX, args...)
	log.Info("xterm cmd=", argsX)
	// set less to not exit on small diff's
	os.Setenv("LESS", "-+F -+X -R")
	cmd := exec.Command("xterm", argsX...)
	path := rs.realPath.String()
	cmd.Dir = path
	if err := cmd.Run(); err != nil {
		log.Log(WARN, "xterm.Run() failed")
		log.Log(WARN, "path =", path)
		log.Log(WARN, "cmd = xterm", argsX)
	} else {
		log.Log(WARN, "xterm.Run() worked")
		log.Log(WARN, "path =", path)
		log.Log(WARN, "cmd = xterm", argsX)
	}
}

func (rs *RepoStatus) DoAll(all [][]string) bool {
	for _, cmd := range all {
		log.Log(WARN, "doAll() RUNNING: cmd =", cmd)
		err, out := rs.RunCmd(cmd)
		if err != nil {
			log.Log(WARN, "doAll() err =", err)
			log.Log(WARN, "doAll() out =", out)
			return false
		}
	}
	return true
}

func ScanGitDirectories(srcDir string) []string {
	var all []string
	err := filepath.Walk(srcDir, func(path string, info os.FileInfo, err error) error {
		if err != nil {
			log.Log(REPOWARN, "Error accessing path:", path, err)
			return nil
		}

		// Check if the path is a directory and has a .git subdirectory
		if info.IsDir() && IsGitDir(path) {
			all = append(all, path)
		}

		return nil
	})

	if err != nil {
		log.Log(REPOWARN, "Error walking the path:", srcDir, err)
	}

	return all
}