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path: root/doClean.go
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package main

import (
	"fmt"
	"path/filepath"
	"slices"

	"go.wit.com/lib/protobuf/gitpb"
	"go.wit.com/log"
)

var ErrorReposHasLocalBranches error = fmt.Errorf("repo still has local branches")

func doClean() error {
	if err := IsEverythingOnMaster(); err != nil {
		log.Info("Not all repos are on the master branch")
		// return err
	}

	all := me.forge.Repos.SortByFullPath()
	for all.Scan() {
		repo := all.Next()
		if repo.GetCurrentBranchName() != repo.GetMasterBranchName() {
			// skip this while in devel
			// continue
		}
		if repo.IsDirty() {
			continue
		}
		if err := doCleanRepo(repo); err != nil {
			badRepoExit(repo, err)
		}
	}
	log.Info("All repos on the master branch are clean")
	return nil
}

// removes all local branches
func doCleanRepo(repo *gitpb.Repo) error {
	var hasLocal bool
	if argv.Verbose {
		log.Info("Cleaning:", repo.GetGoPath())
	}
	if repo.GitConfig == nil {
		return fmt.Errorf("GitConfig == nil")
	}

	for _, l := range repo.GitConfig.Local {
		log.Info("\tlocal branch name:", l.Name)
	}

	for name, b := range repo.GitConfig.Branches {
		if b.Name == "" {
			b.Name = name
		}
		if name == repo.GetMasterBranchName() {
			// never delete the master branch
			// todo: make sure the master branch is in sync with remote master
			continue
		}
		if name == repo.GetUserBranchName() {
			hasLocal = true
			if err := doCleanUserBranch(repo, b); err != nil {
				log.Info("\tLOCAL BRANCH ERROR user")
				return err
			}
			log.Info("\tLOCAL BRANCH user")
			continue
		}
		if name == repo.GetDevelBranchName() {
			if err := doCleanDevelBranch(repo, b); err != nil {
				log.Info("\tLOCAL BRANCH ERROR devel")
				return err
			}
			log.Info("\tLOCAL BRANCH devel")
			continue
		}
		log.Info("\tlocal branch name unknown:", name, b.Merge, b.Remote)
	}
	if argv.Clean.Force == nil {
		if hasLocal {
			return ErrorReposHasLocalBranches
		}
	}
	return nil
}

func verifyLocalBranchIsMerged(repo *gitpb.Repo, branch *gitpb.GitBranch) error {
	return nil
}

func doCleanDevelBranch(repo *gitpb.Repo, branch *gitpb.GitBranch) error {
	log.Printf("\tDo something %s on branch name:%s merge:%s remote:%s\n", repo.GetGoPath(), branch.Name, branch.Merge, branch.Remote)
	return nil
}

func doCleanUserBranch(repo *gitpb.Repo, branch *gitpb.GitBranch) error {
	if branch.Name != repo.GetUserBranchName() {
		return fmt.Errorf("repo %s was not user branch %s", repo.GetGoPath(), branch.Name)
	}
	/*
		if bran == repo.GetUserBranchName() {
			log.Info("The user branch also has a remote branch", repo.CurrentTag.Refname)
			log.Info("TODO: verify the remote branch is out of date", repo.CurrentTag.Refname)
			log.Info("TODO: delete the remote branch", repo.CurrentTag.Refname)
			return nil
		}
	*/

	if !repo.Exists(filepath.Join(".git/refs/heads", branch.Name)) {
		err := fmt.Errorf("BAD FORGE LOGIC. DELETE REPO %s", repo.GetGoPath())
		log.Warn(err)
		me.forge.Repos.Repos = slices.DeleteFunc(me.forge.Repos.Repos, func(r *gitpb.Repo) bool {
			if repo.GetGoPath() == r.GetGoPath() {
				return true
			}
			return false
		})

		// me.forge.Repos.Delete(repo)
		me.forge.ConfigSave()
		// os.Exit(0)
		return nil
	}

	if repo.Exists(filepath.Join(".git/refs/remotes/origin", branch.Name)) {
		log.Info("why is this non-localonly branch a problem?", branch.Name)
		repo.RunVerbose([]string{"ls", "-l", ".git/refs/remotes/origin"})
		repo.RunVerbose([]string{"cat", filepath.Join(".git/refs/remotes/origin", branch.Name)})
		repo.RunVerbose([]string{"cat", filepath.Join(".git/refs/heads", branch.Name)})
		if err := userToDevelRequiresGitPush(repo, branch.Name); err != nil {
			log.Info(err)
			log.Info("THIS USER BRANCH MUST BE PUSHED TO DEVEL", branch.Name)
			return err
		}
		log.Info("THIS USER BRANCH IS CLEAN TO DELETE", branch.Name)
		if argv.Clean.Force != nil {
			cmd := []string{"git", "branch", "-D", branch.Name}
			_, err := repo.RunVerbose(cmd)
			log.Info(err)
			return err
		}
	} else {
		log.Info("why is this local only branch a problem?", branch.Name)
		repo.RunVerbose([]string{"ls", "-l", ".git/refs/remotes/origin"})
		r, err := repo.RunVerbose([]string{"cat", filepath.Join(".git/refs/heads", branch.Name)})
		if err == nil {
			cmd := []string{"git", "show", "-s", "--format=\"%H %ae %as %s\"", r.Stdout[0]}
			repo.RunVerbose(cmd)
			log.Info(cmd)
		}
		if err := userToDevelRequiresGitPush(repo, branch.Name); err != nil {
			log.Info(err)
			log.Info("THIS USER BRANCH MUST BE PUSHED TO DEVEL", branch.Name)
			return err
		}
		log.Info("THIS USER BRANCH IS CLEAN TO DELETE", branch.Name)
		if argv.Clean.Force != nil {
			cmd := []string{"git", "branch", "-D", branch.Name}
			_, err := repo.RunVerbose(cmd)
			log.Info("THE GIT BRANCH DELETE ERROR IS:", err)
			return err
		}
	}
	// return fmt.Errorf("%s repo.CurrentTag is not local: %s. Don't proceed yet", repo.GetGoPath(), repo.CurrentTag.Refname)
	log.Printf("Do something %s on branch name:%s merge:%s remote:%s\n", repo.GetGoPath(), branch.Name, branch.Merge, branch.Remote)
	return nil
}

func userToDevelRequiresGitPush(repo *gitpb.Repo, branchName string) error {
	devel := repo.GetDevelBranchName()
	missing := countDiffObjects(repo, branchName, "origin/"+devel)
	b2 := countDiffObjects(repo, "origin/"+devel, branchName)
	log.Info("user vs devel count", missing, b2)
	if missing == 0 && b2 == 0 {
		return nil
	}
	if missing != 0 {
		log.Info("user vs devel count missing != 0, b2 ==", missing, b2)
		log.Info("THIS MEANS THE LOCAL BRANCH NEEDS GIT PUSH TO ORIGIN BRANCH ==", missing)
		// if argv.Examine.Fix != nil {
		// 	return gitPushStrict(repo, branchName)
		// }
		return fmt.Errorf("user branch not clean to delete %d %d", missing, b2)
	}
	if missing == 0 {
		// log.Info("THIS MEANS THE LOCAL BRANCH IS OK TO DELETE missing =", missing)
		log.Info("THIS IS REALLY BAD RIGHT NOW. must to git push / git merge missing =", missing, b2)
	}
	return fmt.Errorf("user branch not clean to delete. maybe it is? devel might be ahead of user branch. %d %d", missing, b2)
}