package forgepb

import (
	"os"
	"os/user"
	"path/filepath"
	"strings"

	"go.wit.com/log"
)

func (f *Forge) ScanGoSrc() (bool, error) {
	dirs, err := gitDirectories(f.goSrc)
	if err != nil {
		return false, err
	}

	for _, dir := range dirs {
		if strings.HasPrefix(dir, f.goSrc) {
			gopath := strings.TrimPrefix(dir, f.goSrc)
			gopath = strings.Trim(gopath, "/")
			// log.Info("ScanGoSrc()  ok:", f.goSrc, gopath)
			newr, err := f.Repos.NewGoPath(f.goSrc, gopath)
			if err != nil {
				log.Log(FORGEPBWARN, "init failed", err)
				panic("crapnuts")
			}
			log.Info("init worked for", newr.GoPath)
			// try to guess what the 'master' branch is
			if newr.IsBranch("guimaster") {
				newr.SetMasterBranchName("guimaster")
			} else if newr.IsBranch("master") {
				newr.SetMasterBranchName("master")
			} else if newr.IsBranch("main") {
				newr.SetMasterBranchName("main")
			} else {
				newr.SetMasterBranchName("masterFIXME")
			}

			if newr.IsBranch("guidevel") {
				newr.SetDevelBranchName("guidevel")
			} else if newr.IsBranch("devel") {
				newr.SetDevelBranchName("devel")
			} else {
				newr.SetDevelBranchName("develFIXME")
			}

			usr, _ := user.Current()
			uname := usr.Username
			if newr.IsBranch(uname) {
				newr.SetUserBranchName(uname)
			} else {
				newr.SetUserBranchName(uname + "FIXME")
			}
		} else {
			log.Log(FORGEPBWARN, "ScanGoSrc() bad:", dir)
		}
	}
	return true, err
}

func gitDirectories(srcDir string) ([]string, error) {
	var all []string
	err := filepath.Walk(srcDir, func(path string, info os.FileInfo, err error) error {
		if err != nil {
			log.Log(FORGEPBWARN, "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(FORGEPBWARN, "Error walking the path:", srcDir, err)
	}

	return all, err
}

// IsGitDir checks if a .git directory exists inside the given directory
func IsGitDir(dir string) bool {
	gitDir := filepath.Join(dir, ".git")
	info, err := os.Stat(gitDir)
	if os.IsNotExist(err) {
		return false
	}
	return info.IsDir()
}

/*
// rill is awesome. long live rill
func rillAddDirs(gopaths []string) {
	// Convert a slice of user IDs into a channel
	ids := rill.FromSlice(gopaths, nil)

	// Read users from the API.
	// Concurrency = 20
	dirs := rill.Map(ids, 20, func(id string) (*repolist.RepoRow, error) {
		return me.repos.View.FindByName(id), nil
	})

	// Activate users.
	// Concurrency = 10
	err := rill.ForEach(dirs, 10, func(repo *repolist.RepoRow) error {
		fmt.Printf("Repo found : %s\n", repo.GoPath())
		repo.Run([]string{"git", "pull"})
		return nil
	})

	// Handle errors
	fmt.Println("Error:", err)
}
*/