package main

/*
 * This file is part of Autogits.
 *
 * Copyright © 2024 SUSE LLC
 *
 * Autogits is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 2 of the License, or (at your option) any later
 * version.
 *
 * Autogits is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * Foobar. If not, see <https://www.gnu.org/licenses/>.
 */

import (
	"bytes"
	"errors"
	"flag"
	"fmt"
	"log"
	"net/url"
	"os"
	"os/exec"
	"path"
	"path/filepath"
	"slices"
	"strings"

	transport "github.com/go-openapi/runtime/client"
	"src.opensuse.org/autogits/common"
	apiclient "src.opensuse.org/autogits/common/gitea-generated/client"
	"src.opensuse.org/autogits/common/gitea-generated/client/organization"
	"src.opensuse.org/autogits/common/gitea-generated/client/repository"
	"src.opensuse.org/autogits/common/gitea-generated/models"
)

const commandLineHelp = `
SYNTAX
    devel-importer <obs-project> <gitea-org>

`

func printHelp(flags string) {
	os.Stdout.WriteString(commandLineHelp)
	os.Stdout.WriteString(flags)
}

func outputList(str string) []string {
	out := []string{}

	for _, l := range strings.Split(strings.TrimSpace(str), "\n") {
		l = strings.TrimSpace(l)
		if len(l) > 0 {
			out = append(out, l)
		}
	}
	return out
}

func runObsCommand(args ...string) ([]string, error) {
	cmd := exec.Command("osc", args...)
	out, err := cmd.Output()

	return outputList(string(out)), err
}

var DebugMode bool

func giteaPackage(pkg string) string {
	return strings.ReplaceAll(pkg, "+", "_")
}

func projectMaintainer(obs *common.ObsClient, prj string) ([]string, []string) { // users, groups
	meta, err := obs.GetProjectMeta(prj)
	if err != nil {
		log.Panicln(err)
	}

	uids := []string{}
	gids := []string{}

	for _, p := range meta.Persons {
		if !slices.Contains(uids, p.UserID) {
			uids = append(uids, p.UserID)
		}
	}
	for _, g := range meta.Groups {
		if !slices.Contains(gids, g.GroupID) {
			gids = append(gids, g.GroupID)
		}
	}

	return uids, gids
}

func packageMaintainers(obs *common.ObsClient, prj, pkg string) ([]string, []string) { // users, groups
	meta, err := obs.GetPackageMeta(prj, pkg)
	if err != nil {
		log.Panicln(err, "FOR:", prj, "/", pkg)
	}

	uids := []string{}
	gids := []string{}

	for _, p := range meta.Persons {
		if !slices.Contains(uids, p.UserID) {
			uids = append(uids, p.UserID)
		}
	}
	for _, g := range meta.Groups {
		if !slices.Contains(gids, g.GroupID) {
			gids = append(gids, g.GroupID)
		}
	}

	return uids, gids
}

func listMaintainers(obs *common.ObsClient, prj string, pkgs []string) {
	users, groups := projectMaintainer(obs, prj)
	log.Println("Fetching maintainers for prj:", prj, users)

	for _, pkg := range pkgs {
		u, g := packageMaintainers(obs, prj, pkg)
		log.Println("maintainers for pkg:", pkg, u)
		users = append(users, u...)
		groups = append(groups, g...)
	}

	slices.Sort(users)
	slices.Sort(groups)
	users = slices.Compact(users)
	groups = slices.Compact(groups)
	log.Println("need to contact following:", strings.Join(users, ", "))

	contact_email := []string{}
	for _, uid := range users {
		user, err := obs.GetUserMeta(uid)
		if err != nil {
			log.Panicln(err)
		}

		if user != nil {
			contact_email = append(contact_email, fmt.Sprintf("%s <%s>", user.Name, user.Email))
		}
	}
	log.Println(strings.Join(contact_email, ", "))
}

func gitImporter(prj, pkg string) error {
	params := []string{"-p", prj, "-r", git.GetPath()}
	if DebugMode {
		params = append(params, "-l", "debug")
	}
	params = append(params, pkg)
	common.LogDebug("git-importer", params)
	cmd := exec.Command("./git-importer", params...)
	if idx := slices.IndexFunc(cmd.Env, func(val string) bool { return val[0:12] == "GITEA_TOKEN=" }); idx != -1 {
		cmd.Env = slices.Delete(cmd.Env, idx, idx+1)
	}
	out, err := cmd.CombinedOutput()
	log.Println(string(out))
	if code := cmd.ProcessState.ExitCode(); code != 0 {
		return fmt.Errorf("Non-zero exit code from git-importer: %d %w", code, err)
	}
	return nil
}

func cloneDevel(git common.Git, gitDir, outName, urlString, remote string, fatal bool) error {
	if url, _ := url.Parse(urlString); url != nil {
		url.Fragment = ""
		urlString = url.String()
	}

	params := []string{"clone", "-o", remote}
	params = append(params, urlString, outName)

	if fatal {
		git.GitExecOrPanic(gitDir, params...)
	} else {
		git.GitExec(gitDir, params...)
	}
	return nil
}

func findMissingDevelBranch(git common.Git, pkg, project string) {
	d, err := git.GitBranchHead(pkg, "devel")
	if err != nil {
		if _, err = git.GitBranchHead(pkg, "factory"); err != nil {
			log.Println("factory is missing... so maybe repo is b0rked.")
			return
		}

		hash := common.SplitLines(git.GitExecWithOutputOrPanic(pkg,
			"log",
			"factory",
			"--all",
			"--grep=build.opensuse.org/package/show/"+project+"/"+pkg,
			"-1",
			"--pretty=format:%H"))
		if len(hash) > 0 {
			log.Println("  devel @", hash[0])
			git.GitExecOrPanic(pkg, "branch", "devel", hash[0])
		} else {
			git.GitExecOrPanic(pkg, "branch", "devel", "factory")
		}
	} else {
		log.Println("  devel already exists?", d)
	}
}

func importFactoryRepoAndCheckHistory(pkg string, meta *common.PackageMeta) (factoryRepo *models.Repository, retErr error) {
	if repo, err := client.Repository.RepoGet(repository.NewRepoGetParams().WithDefaults().WithOwner("pool").WithRepo(giteaPackage(pkg)), r.DefaultAuthentication); err != nil || repo.Payload.ObjectFormatName != "sha256" {
		if err != nil && !errors.Is(err, &repository.RepoGetNotFound{}) {
			log.Panicln(err)
		}

		log.Println("Cannot find src package:", pkg)
		return nil, nil
	} else {
		factoryRepo = repo.Payload
		CreatePoolFork(factoryRepo)
	}

	if _, err := os.Stat(filepath.Join(git.GetPath(), pkg)); os.IsNotExist(err) {
		common.LogDebug("Cloning factory...")
		cloneDevel(git, "", pkg, factoryRepo.CloneURL, "pool", true) // in case we have imported
	} else if err != nil {
		common.PanicOnError(err)
	} else {
		// we have already cloned it... so, fetch pool remote
		common.LogDebug("Fetching pool, as already should have the remote")
		if err = git.GitExec(pkg, "fetch", "pool"); err != nil {
			common.LogError(err)
			return factoryRepo, err
		}
	}

	roots := 0
	if _, err := git.GitRemoteHead(pkg, "pool", "devel"); err == nil {
		factory_roots := strings.TrimSpace(git.GitExecWithOutputOrPanic(pkg, "rev-list", "pool/factory", "--max-parents=0"))
		devel_roots := strings.TrimSpace(git.GitExecWithOutputOrPanic(pkg, "rev-list", "pool/devel", "--max-parents=0"))
		roots = len(common.SplitLines(factory_roots))
		if devel_roots != factory_roots || len(common.SplitLines(factory_roots)) != 1 {
			roots = 10
		}
	} else if _, err := git.GitRemoteHead(pkg, "pool", "factory"); err == nil {
		items := strings.TrimSpace(git.GitExecWithOutputOrPanic(pkg, "rev-list", "pool/factory", "--max-parents=0"))
		roots = len(common.SplitLines(items))
	} else {
		common.LogInfo("No factory import ...")
	}

	if roots != 1 {
		common.LogError("Expected 1 root in factory, but found", roots)
		common.LogError("Ignoring current import")
		common.PanicOnError(os.RemoveAll(path.Join(git.GetPath(), pkg)))
		retErr = fmt.Errorf("Invalid factory repo -- treating as devel project only")
		return
	}

	devel_project, err := devel_projects.GetDevelProject(pkg)
	common.LogDebug("Devel project:", devel_project, err)
	if err == common.DevelProjectNotFound {
		// assume it's this project, maybe removed from factory
		devel_project = prj
	}
	common.LogDebug("finding missing branches in", pkg, devel_project)
	findMissingDevelBranch(git, pkg, devel_project)
	return
}

func SetRepoOptions(repo *models.Repository) {
	_, err := client.Repository.RepoEdit(repository.NewRepoEditParams().WithOwner(org).WithRepo(repo.Name).WithBody(
		&models.EditRepoOption{
			HasPullRequests:            true,
			HasPackages:                false,
			HasReleases:                false,
			HasActions:                 false,
			AllowMerge:                 true,
			AllowRebaseMerge:           false,
			AllowSquash:                false,
			AllowFastForwardOnly:       true,
			AllowRebaseUpdate:          false,
			AllowManualMerge:           true,
			AutodetectManualMerge:      true,
			DefaultMergeStyle:          "fast-forward-only",
			AllowRebase:                false,
			DefaultAllowMaintainerEdit: true,
			DefaultBranch:              "main",
		}),
		r.DefaultAuthentication,
	)

	if err != nil {
		log.Panicln("Failed to adjust repository:", repo.Name, err)
	}
}

func CreatePoolFork(factoryRepo *models.Repository) *models.Repository {
	pkg := factoryRepo.Name
	log.Println("factory fork creator for develProjectPackage:", pkg)
	if repoData, err := client.Repository.RepoGet(repository.NewRepoGetParams().WithOwner(org).WithRepo(pkg), r.DefaultAuthentication); err != nil {
		// update package
		fork, err := client.Repository.CreateFork(repository.NewCreateForkParams().
			WithOwner("pool").
			WithRepo(factoryRepo.Name).
			WithBody(&models.CreateForkOption{
				Organization: org,
			}), r.DefaultAuthentication)
		if err != nil {
			log.Panicln("Error while trying to create fork from 'pool'", pkg, "to", org, ":", err)
		}

		repo := fork.Payload
		return repo
	} else {
		return repoData.Payload
	}
}

func CreateDevelOnlyPackage(pkg string) *models.Repository {
	log.Println("repo creator for develProjectPackage:", pkg)
	if repoData, err := client.Repository.RepoGet(repository.NewRepoGetParams().WithOwner(org).WithRepo(giteaPackage(pkg)), r.DefaultAuthentication); err != nil {
		giteaPkg := giteaPackage(pkg)
		repoData, err := client.Organization.CreateOrgRepo(organization.NewCreateOrgRepoParams().WithOrg(org).WithBody(
			&models.CreateRepoOption{
				ObjectFormatName: "sha256",
				AutoInit:         false,
				Name:             &giteaPkg,
				DefaultBranch:    "main",
			}),
			r.DefaultAuthentication,
		)

		if err != nil {
			log.Panicln("Error creating new package repository:", pkg, err)
		}

		repo := repoData.Payload
		return repo
	} else {
		return repoData.Payload
	}
}

func PushRepository(factoryRepo, develRepo *models.Repository, pkg string) (repo *models.Repository) {
	//		branchName := repo.DefaultBranch
	if factoryRepo != nil {
		repo = CreatePoolFork(factoryRepo)

		/*
			devel
				for _, b := range branches {
					if len(b) > 12 && b[0:12] == "develorigin/" {
						b = b[12:]
						if b == "factory" || b == "devel" {
							git.GitExec(pkg, "push", "develorigin", "--delete", b)
						}
					}
				}*/

		//branches := common.SplitStringNoEmpty(git.GitExecWithOutputOrPanic(pkg.Name, "branch", "-r"), "\n")
		/* factory
		for _, b := range branches {
			if len(b) > 12 && b[0:12] == "develorigin/" {
				b = b[12:]
				if b == "factory" || b == "devel" {
					git.GitExec(pkg.Name, "push", "develorigin", "--delete", b)
				}
			}
		}
		*/
		// git.GitExecOrPanic(pkg.ame, "checkout", "-B", "main", "devel/main")
	} else {
		repo = CreateDevelOnlyPackage(pkg)
	}

	remotes := common.SplitStringNoEmpty(git.GitExecWithOutputOrPanic(pkg, "remote", "show"), "\n")
	if !slices.Contains(remotes, "develorigin") {
		git.GitExecOrPanic(pkg, "remote", "add", "develorigin", repo.SSHURL)
		//			git.GitExecOrPanic(pkgName, "fetch", "devel")
	}
	if slices.Contains(remotes, "origin") {
		git.GitExecOrPanic(pkg, "lfs", "fetch", "--all")
		git.GitExecOrPanic(pkg, "lfs", "push", "develorigin", "--all")
	}

	git.GitExecOrPanic(pkg, "push", "develorigin", "main", "-f")
	SetRepoOptions(repo)
	git.GitExec(pkg, "push", "develorigin", "--delete", "factory")
	git.GitExec(pkg, "push", "develorigin", "--delete", "devel")
	git.GitExec(pkg, "push", "develorigin", "--delete", "leap-16.0")
	return repo
}

func importDevelRepoAndCheckHistory(pkg string, meta *common.PackageMeta) *models.Repository {
	repo := CreateDevelOnlyPackage(pkg)
	if _, err := os.Stat(filepath.Join(git.GetPath(), pkg)); os.IsNotExist(err) {
		cloneDevel(git, "", pkg, repo.SSHURL, "develorigin", false) // in case we have imported
	}

	if CloneScmsync(pkg, meta) {
		return repo
	}
	var p, dp string
	factory_branch, fhe := git.GitRemoteHead(pkg, "develorigin", "factory")
	if fhe == nil {
		p = strings.TrimSpace(git.GitExecWithOutputOrPanic(pkg, "rev-list", "--max-parents=0", "--count", factory_branch))
	} else {
		common.LogError(fhe)
	}
	devel_branch, dhe := git.GitRemoteHead(pkg, "develorigin", "devel")
	if dhe != nil {
		devel_project, err := devel_projects.GetDevelProject(pkg)
		common.LogDebug("Devel project:", devel_project, err)
		if err == common.DevelProjectNotFound {
			// assume it's this project, maybe removed from factory
			devel_project = prj
		}
		common.LogDebug("finding missing branches in", pkg, devel_project)
		findMissingDevelBranch(git, pkg, devel_project)
		devel_branch, dhe = git.GitBranchHead(pkg, "devel")
	}
	if dhe == nil {
		dp = strings.TrimSpace(git.GitExecWithOutputOrPanic(pkg, "rev-list", "--max-parents=0", "--count", devel_branch))
	} else {
		common.LogError(dhe)
	}

	// even if one parent for both, we need common ancestry, or we are comparing different things.
	mb, mb_err := git.GitExecWithOutput(pkg, "merge-base", factory_branch, devel_branch)
	mb = strings.TrimSpace(mb)

	if p != "1" || dp != "1" || mb_err != nil || mb != factory_branch || mb != devel_branch {
		common.LogInfo("Bad export found ... clearing", p, dp)
		common.LogInfo("  merge branch:", mb, factory_branch, devel_branch, mb_err)
		common.PanicOnError(os.RemoveAll(path.Join(git.GetPath(), pkg)))
	}

	if err := gitImporter("openSUSE:Factory", pkg); err != nil {
		common.PanicOnError(gitImporter(prj, pkg))
	}
	if p := strings.TrimSpace(git.GitExecWithOutputOrPanic(pkg, "rev-list", "--max-parents=0", "--count", "factory")); p != "1" {
		common.LogError("Failed to import package:", pkg)
		common.PanicOnError(fmt.Errorf("Expecting 1 root in after devel import, but have %s", p))
	}
	if out, err := git.GitExecWithOutput(pkg, "show-ref", "--branches"); err != nil || len(common.SplitStringNoEmpty(out, "\n")) == 0 {
		common.LogError(" *** no branches in package. removing")
		return repo
	}

	return repo
}

func SetMainBranch(pkg string, meta *common.PackageMeta) {
	// scnsync, follow that and don't care
	common.LogDebug("Setting main branch...")
	remotes := common.SplitStringNoEmpty(git.GitExecWithOutputOrPanic(pkg, "remote", "show"), "\n")
	if slices.Contains(remotes, "origin") {
		u, err := url.Parse(meta.ScmSync)
		common.PanicOnError(err)
		if len(u.Fragment) == 0 {
			u.Fragment = "HEAD"
		}
		if err := git.GitExec(pkg, "checkout", "-B", "main", u.Fragment); err != nil {
			git.GitExecOrPanic(pkg, "checkout", "-B", "main", "origin/"+u.Fragment)
		}
		return
	}

	// check if we have factory
	if _, err := git.GitBranchHead(pkg, "factory"); err != nil {
		if len(git.GitExecWithOutputOrPanic(pkg, "show-ref", "pool/factory")) > 20 {
			git.GitExecOrPanic(pkg, "branch", "factory", "pool/factory")
		}
	}

	// mark newer branch as main
	branch := "factory"
	if len(common.SplitStringNoEmpty(git.GitExecWithOutputOrPanic(pkg, "rev-list", "^factory", "devel"), "\n")) > 0 {
		branch = "devel"
	}
	common.LogInfo("setting main to", branch)
	git.GitExecOrPanic(pkg, "checkout", "-B", "main", branch)
}

func ObsToRepoName(obspkg string) string {
	return strings.ReplaceAll(obspkg, "+", "_")
}

func ImportSha1Sync(pkg string, url *url.URL) {
	common.LogDebug("Converting SHA1", url.String())

	branch := url.Fragment
	url.Fragment = ""
	p := path.Join(pkg, "sha1stuff")
	common.PanicOnError(os.RemoveAll(path.Join(git.GetPath(), p)))
	git.GitExecOrPanic(pkg, "clone", "--mirror", url.String(), "sha1stuff")
	git.GitExecOrPanic(p, "fetch", "origin", branch)

	gitexport := exec.Command("/usr/bin/git", "fast-export", "--signed-tags=strip", "--tag-of-filtered-object=drop", "--all")
	gitexport.Dir = path.Join(git.GetPath(), p)
	gitexportData, err := gitexport.Output()
	common.LogDebug("Got export data size:", len(gitexportData))
	common.PanicOnError(err)
	gitimport := exec.Command("/usr/bin/git", "fast-import", "--allow-unsafe-features")
	gitimport.Dir = path.Join(git.GetPath(), pkg)
	gitimport.Stdin = bytes.NewReader(gitexportData)
	data, err := gitimport.CombinedOutput()
	common.LogError(string(data))
	common.PanicOnError(err)
	common.PanicOnError(os.RemoveAll(path.Join(git.GetPath(), p)))
	git.GitExecOrPanic(pkg, "checkout", branch)
}

func LfsImport(pkg string) {
	git.GitExecOrPanic(pkg, "lfs", "migrate", "import", "--everything",
		"--include=*.7z,*.bsp,*.bz2,*.gem,*.gz,*.jar,*.lz,*.lzma,*.obscpio,*.oxt,*.pdf,*.png,*.rpm,*.tar,*.tbz,*.tbz2,*.tgz,*.ttf,*.txz,*.whl,*.xz,*.zip,*.zst")
}

func CloneScmsync(pkg string, meta *common.PackageMeta) bool {
	if len(meta.ScmSync) > 0 {
		u, _ := url.Parse(meta.ScmSync)
		if remotes := common.SplitStringNoEmpty(git.GitExecWithOutputOrPanic(pkg, "remote", "show"), "\n"); !slices.Contains(remotes, "origin") {
			branch := u.Fragment
			if len(branch) == 0 {
				branch = "HEAD"
			}
			u.Fragment = ""
			git.GitExecOrPanic(pkg, "remote", "add", "origin", u.String())
			u.Fragment = branch
		}
		if err := git.GitExec(pkg, "fetch", "origin"); err != nil && strings.Contains(err.Error(), "fatal: mismatched algorithms: client sha256; server sha1") {
			ImportSha1Sync(pkg, u)
		} else if err != nil {
			panic(err)
		}

		LfsImport(pkg)
		return true
	}

	return false
}

func importRepo(pkg string) (BrokenFactoryPackage, FailedImport bool) {
	BrokenFactoryPackage = false
	FailedImport = false

	var develRepo, factoryRepo *models.Repository

	src_pkg_name := strings.Split(pkg, ":")
	pkg = src_pkg_name[0]

	meta, err := obs.GetPackageMeta(prj, pkg)
	if err != nil {
		meta, err = obs.GetPackageMeta(prj, pkg)
		if err != nil {
			log.Println("Error fetching pkg meta for:", prj, pkg, err)
		}
	}
	if err != nil {
		common.PanicOnError(err)
	}
	if meta == nil {
		panic("package meta is nil...")
	}

	factoryRepo, err = importFactoryRepoAndCheckHistory(pkg, meta)
	if factoryRepo != nil && err != nil {
		BrokenFactoryPackage = true
	}
	if factoryRepo == nil && forceNonPoolPackages {
		log.Println(" IGNORING and will create these as non-pool packages!")
	}

	if factoryRepo == nil || BrokenFactoryPackage {
		develRepo = importDevelRepoAndCheckHistory(pkg, meta)
	} else {
		CloneScmsync(pkg, meta)
	}

	SetMainBranch(pkg, meta)
	PushRepository(factoryRepo, develRepo, pkg)
	return
}

func syncOrgTeams(groupName string, origTeam []common.PersonRepoMeta) []string {
	teamMembers := make([]common.PersonRepoMeta, len(origTeam))
	copy(teamMembers, origTeam)

	missing := []string{}
	if DebugMode {
		log.Println("syncOrgTeams", groupName, " -> ", teamMembers)
	}
	teamsRes, err := client.Organization.OrgListTeams(organization.NewOrgListTeamsParams().WithOrg(org), r.DefaultAuthentication)
	if err != nil {
		log.Panicln("failed to list org teams", org, err)
	}
	teams := teamsRes.Payload

	found := false
	teamID := int64(0)
	for _, team := range teams {
		if team.Name == groupName {
			teamID = team.ID
			membersRes, err := client.Organization.OrgListTeamMembers(organization.NewOrgListTeamMembersParams().WithID(team.ID), r.DefaultAuthentication)
			if err != nil {
				log.Panicln("failed get team members", team.Name, err)
			}

			for _, m := range membersRes.Payload {
				for i := 0; i < len(teamMembers); {
					if teamMembers[i].UserID == m.UserName || (teamMembers[i].Role != "maintainer" && teamMembers[i].Role != "") {
						teamMembers = slices.Delete(teamMembers, i, i+1)
					} else {
						i++
					}
				}
			}

			found = true
			break
		}

	}

	if !found {
		team, err := client.Organization.OrgCreateTeam(organization.NewOrgCreateTeamParams().WithOrg(org).WithBody(&models.CreateTeamOption{
			CanCreateOrgRepo:        false,
			IncludesAllRepositories: true,
			Permission:              "write",
			Name:                    &groupName,
			Units:                   []string{"repo.code"},
			UnitsMap:                map[string]string{"repo.code": "write"},
		}), r.DefaultAuthentication)
		if err != nil {
			log.Panicln("can't create orgteam", org, err)
		}
		teamID = team.Payload.ID
	}

	if DebugMode && len(teamMembers) > 0 {
		log.Println("missing team members:", teamMembers)
	}

	for _, user := range teamMembers {
		_, err := client.Organization.OrgAddTeamMember(organization.NewOrgAddTeamMemberParams().WithID(teamID).WithUsername(user.UserID), r.DefaultAuthentication)
		if err != nil {
			if _, notFound := err.(*organization.OrgAddTeamMemberNotFound); !notFound {
				log.Panicln(err)
			} else {
				if DebugMode {
					log.Println("can't add user to group:", groupName, user.UserID)
				}
				missing = append(missing, user.UserID)
			}
		}
	}

	if DebugMode {
		log.Println("org team synced", groupName)
	}

	return missing
}

func syncOrgOwners(uids []common.PersonRepoMeta) []string {
	return syncOrgTeams("Owners", append(uids, common.PersonRepoMeta{UserID: "autogits-devel"}))
}

func syncPackageCollaborators(pkg string, orig_uids []common.PersonRepoMeta) []string {
	missing := []string{}
	uids := make([]common.PersonRepoMeta, len(orig_uids))
	copy(uids, orig_uids)
	collab, err := client.Repository.RepoListCollaborators(repository.NewRepoListCollaboratorsParams().WithOwner(org).WithRepo(giteaPackage(pkg)), r.DefaultAuthentication)
	if err != nil {
		if errors.Is(err, &repository.RepoListCollaboratorsNotFound{}) {
			return missing
		}
		log.Panicln(err)
	}

	for _, u := range collab.Payload {
		for i := range uids {
			if uids[i].UserID == u.UserName {
				uids = slices.Delete(uids, i, i+1)
				break
			}
		}
	}

	if DebugMode && len(uids) > 0 {
		log.Println("missing collabs for", pkg, ":", uids)
	}
	for _, u := range uids {
		_, err := client.Repository.RepoAddCollaborator(repository.NewRepoAddCollaboratorParams().WithOwner(org).WithRepo(giteaPackage(pkg)).WithBody(&models.AddCollaboratorOption{
			Permission: "write",
		}).WithCollaborator(u.UserID), r.DefaultAuthentication)

		if err != nil {
			if _, notFound := err.(*repository.RepoAddCollaboratorUnprocessableEntity); notFound {
				if DebugMode {
					log.Println("can't add user to collaborators:", u.UserID)
				}
				missing = append(missing, u.UserID)
			} else {
				log.Println(err)
			}
		}
	}
	return missing
}

func syncMaintainersToGitea(pkgs []string) {
	maintainers := common.MaintainershipMap{
		Data: map[string][]string{},
	}

	prjMeta, err := obs.GetProjectMeta(prj)
	if err != nil {
		log.Panicln("failed to get project meta", prj, err)
	}

	missingDevs := []string{}
	devs := []string{}

	if len(prjMeta.ScmSync) > 0 {
		common.LogInfo("Project already in Git. Maintainers must have been already synced. Skipping...")
		return
	}

	for _, group := range prjMeta.Groups {
		if group.GroupID == "factory-maintainers" {
			log.Println("Ignoring factory-maintainers")
			continue
		}
		teamMembers, err := obs.GetGroupMeta(group.GroupID)
		if err != nil {
			log.Panicln("failed to get group", err)
		}

		if DebugMode {
			log.Println("syncing", group.GroupID, teamMembers.Persons)
		}
		missingDevs = append(missingDevs, syncOrgTeams(group.GroupID, teamMembers.Persons.Persons)...)
		for _, m := range teamMembers.Persons.Persons {
			devs = append(devs, m.UserID)
		}
	}
	for _, p := range prjMeta.Persons {
		devs = append(devs, p.UserID)
	}

	missingDevs = append(missingDevs, syncOrgOwners(prjMeta.Persons)...)
	maintainers.Data[""] = devs

	for _, pkg := range pkgs {
		pkgMeta, err := obs.GetPackageMeta(prj, pkg)
		if err != nil {
			log.Panicln("failed to get package meta", prj, pkg, err)
		}
		missingDevs = append(missingDevs, syncPackageCollaborators(pkg, pkgMeta.Persons)...)

		devs := []string{}
		for _, m := range pkgMeta.Persons {
			devs = append(devs, m.UserID)
		}
		maintainers.Data[pkg] = devs
	}

	createPrjGit()

	file, err := os.Create(path.Join(git.GetPath(), common.DefaultGitPrj, common.MaintainershipFile))
	if err != nil {
		log.Println(" *** Cannot create maintainership file:", err)
	} else {
		maintainers.WriteMaintainershipFile(file)
		file.Close()

		status, err := git.GitStatus(common.DefaultGitPrj)
		if err != nil {
			log.Panicln(err)
		}

		for _, s := range status {
			if s.Path == common.MaintainershipFile && s.Status == common.GitStatus_Untracked {
				git.GitExecOrPanic(common.DefaultGitPrj, "add", common.MaintainershipFile)
				git.GitExecOrPanic(common.DefaultGitPrj, "commit", "-m", "Initial sync of maintainership with OBS")
				git.GitExecOrPanic(common.DefaultGitPrj, "push")
			}
		}
		if l := len(common.SplitStringNoEmpty(git.GitExecWithOutputOrPanic(common.DefaultGitPrj, "status", "--porcelain=2"), "\n")); l > 0 {
		}
	}

	slices.Sort(missingDevs)
	log.Println("Users without Gitea accounts:", slices.Compact(missingDevs))
}

func createPrjGit() {
	if _, err := os.Stat(path.Join(git.GetPath(), common.DefaultGitPrj)); errors.Is(err, os.ErrNotExist) {
		if err := git.GitExec("", "clone", "gitea@src.opensuse.org:"+org+"/_ObsPrj.git", common.DefaultGitPrj); err != nil {
			repoName := common.DefaultGitPrj
			_, err := client.Organization.CreateOrgRepo(organization.NewCreateOrgRepoParams().WithOrg(org).WithBody(
				&models.CreateRepoOption{
					AutoInit:         false,
					Name:             &repoName,
					ObjectFormatName: "sha256",
				}), r.DefaultAuthentication)
			if err != nil {
				log.Panicln(err)
			}

			git.GitExecOrPanic("", "clone", "gitea@src.opensuse.org:"+org+"/_ObsPrj.git", common.DefaultGitPrj)

			config, err := obs.ProjectConfig(prj)
			if err != nil {
				log.Panicln(err)
			}

			file, err := os.Create(path.Join(git.GetPath(), common.DefaultGitPrj, "_config"))
			if err != nil {
				log.Panicln(err)
			}
			config = strings.TrimSpace(config)
			if len(config) > 1 {
				file.Write([]byte(config))
				file.Close()
				git.GitExecOrPanic(common.DefaultGitPrj, "add", "_config")
			}

			file, err = os.Create(path.Join(git.GetPath(), common.DefaultGitPrj, "staging.config"))
			if err != nil {
				log.Panicln(err)
			}
			file.WriteString("{\n   // Reference build project\n   \"ObsProject\": \"" + prj + "\",\n}\n")
			file.Close()
			git.GitExecOrPanic(common.DefaultGitPrj, "add", "staging.config")

			if file, err = os.Create(path.Join(git.GetPath(), common.DefaultGitPrj, "workflow.config")); err != nil {
				log.Panicln(err)
			}
			file.WriteString("{\n    \"Workflows\": [\"direct\", \"pr\"],\n    \"Organization\": \"" + org + "\",\n}\n")
			file.Close()
			git.GitExecOrPanic(common.DefaultGitPrj, "add", "workflow.config")
		}
	}
}

func TrimMultibuildPackages(packages []string) []string {
	for i := 0; i < len(packages); {
		if strings.Contains(packages[i], ":") {
			packages = slices.Delete(packages, i, i+1)
		} else {
			i++
		}
	}
	return packages
}

var client *apiclient.GiteaAPI
var r *transport.Runtime
var git common.Git
var obs *common.ObsClient
var prj, org string
var forceBadPool bool
var forceNonPoolPackages bool
var devel_projects common.DevelProjects

func main() {
	if err := common.RequireGiteaSecretToken(); err != nil {
		log.Panicln("Missing GITEA_TOKEN")
	}

	if err := common.RequireObsSecretToken(); err != nil {
		log.Panicln("Missing OBS_PASSWORD and/or OBS_USER")
	}

	flags := flag.NewFlagSet("devel-importer", flag.ContinueOnError)
	helpString := new(bytes.Buffer)

	flags.SetOutput(helpString)
	//workflowConfig := flag.String("config", "", "Repository and workflow definition file")
	giteaHost := flags.String("gitea", "src.opensuse.org", "Gitea instance")
	obsUrl := flags.String("obs-url", "https://api.opensuse.org", "OBS API Url")
	//rabbitUrl := flag.String("url", "amqps://rabbit.opensuse.org", "URL for RabbitMQ instance")
	flags.BoolVar(&DebugMode, "debug", false, "Extra debugging information")
	// revNew := flag.Int("nrevs", 20, "Number of new revisions in factory branch. Indicator of broken history import")
	purgeOnly := flags.Bool("purge-only", false, "Purges package repositories on Gitea. Use with caution")
	debugGitPath := flags.String("git-path", "", "Path for temporary git directory. Only used if DebugMode")
	getMaintainers := flags.Bool("maintainers-only", false, "Get maintainers only and exit")
	syncMaintainers := flags.Bool("sync-maintainers-only", false, "Sync maintainers to Gitea and exit")
	flags.BoolVar(&forceBadPool, "bad-pool", false, "Force packages if pool has no branches due to bad import")
	flags.BoolVar(&forceNonPoolPackages, "non-pool", false, "Allow packages that are not in pool to be created. WARNING: Can't add to factory later!")
	specificPackages := flags.String("packages", "", "Process specific package, separated by commas, ignoring the others")
	resumeAt := flags.String("resume", "", "Resume import at given pacakge")
	syncPool := flags.Bool("sync-pool-only", false, "Force updates pool based on currrently imported project")

	if help := flags.Parse(os.Args[1:]); help == flag.ErrHelp || flags.NArg() != 2 {
		printHelp(helpString.String())
		return
	}

	if DebugMode {
		common.SetLoggingLevel(common.LogLevelDebug)
	}

	r = transport.New(*giteaHost, apiclient.DefaultBasePath, [](string){"https"})
	r.DefaultAuthentication = transport.BearerToken(common.GetGiteaToken())
	// r.SetDebug(true)
	client = apiclient.New(r, nil)

	obs, _ = common.NewObsClient(*obsUrl)

	var gh common.GitHandlerGenerator
	var err error

	devel_projects, err = common.FetchDevelProjects()
	if err != nil {
		log.Panic("Cannot load devel projects:", err)
	}
	log.Println("# devel projects loaded:", len(devel_projects))

	if DebugMode {
		if len(*debugGitPath) > 0 {
			gh, err = common.AllocateGitWorkTree(*debugGitPath, "Autogits - Devel Importer", "not.exist")
			if err != nil {
				log.Panicln(err)
			}
		}
	} else {
		dir, _ := os.MkdirTemp(os.TempDir(), "devel-importer")
		gh, err = common.AllocateGitWorkTree(dir, "Autogits - Devel Importer", "not.exist")
		if err != nil {
			log.Panicln("Failed to allocate git handler", err)
		}
	}

	prj = flags.Arg(0)
	org = flags.Arg(1)
	packages, err := runObsCommand("ls", prj)
	packages = TrimMultibuildPackages(packages)

	git, err = gh.CreateGitHandler(org)
	if err != nil {
		log.Panicln("Cannot create git", err)
	}
	defer git.Close()
	log.Println(" - working directory:" + git.GetPath())

	if *syncPool {
		factory_pkgs, err := runObsCommand("ls", "openSUSE:Factory")
		common.PanicOnError(err)
		common.LogInfo("Syncing pool only...")
		factory_pkgs = TrimMultibuildPackages(factory_pkgs)

		for _, pkg := range packages {
			if !slices.Contains(factory_pkgs, pkg) {
				continue
			}

			repo, err := client.Repository.RepoGet(repository.NewRepoGetParams().WithOwner(org).WithRepo(ObsToRepoName(pkg)), r.DefaultAuthentication)
			common.PanicOnError(err)

			if !slices.Contains(common.SplitLines(git.GitExecWithOutputOrPanic(pkg, "remote")), "pool") {
				git.GitExecOrPanic(pkg, "remote", "add", "pool", repo.Payload.SSHURL)
			}
			git.GitExecOrPanic(pkg, "fetch", "pool")
		}
	}

	/*
		for _, pkg := range packages {
			if _, err := client.Organization.CreateOrgRepo(organization.NewCreateOrgRepoParams().WithOrg(org).WithBody(
				&models.CreateRepoOption{
					ObjectFormatName: "sha256",
					AutoInit:         false,
					Name:             &pkg,
					DefaultBranch:    "main",
				}),
				r.DefaultAuthentication,
			); err != nil {
				log.Println(err)
			}
		}
	*/

	if *getMaintainers {
		listMaintainers(obs, prj, packages)
		return
	}

	if *syncMaintainers {
		syncMaintainersToGitea(packages)
		return
	}

	if err != nil {
		log.Printf("Cannot list packages for project '%s'. Err: %v\n", prj, err)
		return
	}
	slices.Sort(packages)
	for i := range packages {
		packages[i] = strings.Split(packages[i], ":")[0]
	}
	packages = slices.Compact(packages)

	log.Printf("%d packages: %s\n\n", len(packages), strings.Join(packages, " "))

	if *purgeOnly {
		log.Println("Purging repositories...")
		pkgs := packages
		if len(*specificPackages) > 0 {
			pkgs = common.SplitStringNoEmpty(*specificPackages, ",")
		}
		for _, pkg := range pkgs {
			client.Repository.RepoDelete(repository.NewRepoDeleteParams().WithOwner(org).WithRepo(giteaPackage(pkg)), r.DefaultAuthentication)
		}
		os.Exit(10)
	}

	if len(*specificPackages) != 0 {
		packages = common.SplitStringNoEmpty(*specificPackages, ",")
	}
	slices.Sort(packages)

	BrokenOBSPackage := []string{}
	FailedImport := []string{}
	for _, pkg := range packages {
		if len(*resumeAt) > 0 && strings.Compare(*resumeAt, pkg) > 0 {
			common.LogDebug(pkg, "skipped due to resuming at", *resumeAt)
			continue
		}

		b, f := importRepo(pkg)
		if b {
			BrokenOBSPackage = append(BrokenOBSPackage, pkg)
		}
		if f {
			FailedImport = append(FailedImport, pkg)
		}
	}

	syncMaintainersToGitea(packages)

	common.LogError("Have broken pool packages:", len(BrokenOBSPackage))
	// common.LogError("Total pool packages:", len(factoryRepos))
	common.LogError("Failed to import:", strings.Join(FailedImport, ","))
	common.LogInfo("BROKEN Pool packages:", strings.Join(BrokenOBSPackage, "\n"))
}