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resolver.go
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resolver.go
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package glrepo
import (
"errors"
"sort"
"strings"
"github.com/profclems/glab/api"
"github.com/profclems/glab/pkg/git"
"github.com/profclems/glab/pkg/prompt"
"github.com/xanzy/go-gitlab"
)
// cap the number of git remotes looked up, since the user might have an
// unusually large number of git remotes
const maxRemotesForLookup = 5
func ResolveRemotesToRepos(remotes Remotes, client *gitlab.Client, base string) (*ResolvedRemotes, error) {
sort.Stable(remotes)
result := &ResolvedRemotes{
remotes: remotes,
apiClient: client,
}
var baseOverride Interface
if base != "" {
var err error
baseOverride, err = FromFullName(base)
if err != nil {
return result, err
}
result.baseOverride = baseOverride
}
return result, nil
}
func resolveNetwork(result *ResolvedRemotes) {
// Loop over at most 5 (maxRemotesForLookup)
for i := 0; i < len(result.remotes) && i < maxRemotesForLookup; i++ {
networkResult, err := api.GetProject(result.apiClient, result.remotes[i].FullName())
if err == nil {
result.network = append(result.network, *networkResult)
}
}
}
type ResolvedRemotes struct {
baseOverride Interface
remotes Remotes
network []gitlab.Project
apiClient *gitlab.Client
}
func (r *ResolvedRemotes) BaseRepo(interactive bool) (Interface, error) {
if r.baseOverride != nil {
return r.baseOverride, nil
}
// if any of the remotes already has a resolution, respect that
for _, r := range r.remotes {
if r.Resolved == "base" {
return r, nil
} else if strings.HasPrefix(r.Resolved, "base:") {
repo, err := FromFullName(strings.TrimPrefix(r.Resolved, "base:"))
if err != nil {
return nil, err
}
return NewWithHost(repo.RepoOwner(), repo.RepoName(), r.RepoHost()), nil
} else if r.Resolved != "" && !strings.HasPrefix(r.Resolved, "head") {
// Backward compatibility kludge for remoteless resolutions created before
// BaseRepo started creeating resolutions prefixed with `base:`
repo, err := FromFullName(r.Resolved)
if err != nil {
return nil, err
}
// Rewrite resolution, ignore the error as this will keep working
// in the future we might add a warning that we couldn't rewrite
// it for compatiblity
_ = git.SetRemoteResolution(r.Name, "base:"+r.Resolved)
return NewWithHost(repo.RepoOwner(), repo.RepoName(), r.RepoHost()), nil
}
}
if !interactive {
// we cannot prompt, so just resort to the 1st remote
return r.remotes[0], nil
}
// from here on, consult the API
if r.network == nil {
resolveNetwork(r)
if len(r.network) == 0 {
return nil, errors.New("no GitLab Projects found from remotes")
}
}
var repoNames []string
repoMap := map[string]*gitlab.Project{}
add := func(r *gitlab.Project) {
fn, _ := FullNameFromURL(r.HTTPURLToRepo)
if _, ok := repoMap[fn]; !ok {
repoMap[fn] = r
repoNames = append(repoNames, fn)
}
}
for i := range r.network {
if r.network[i].ForkedFromProject != nil {
fProject, _ := api.GetProject(r.apiClient, r.network[i].ForkedFromProject.PathWithNamespace)
add(fProject)
}
add(&r.network[i])
}
baseName := repoNames[0]
if len(repoNames) > 1 {
err := prompt.Select(
&baseName,
"base",
"Which should be the base repository (used for e.g. querying issues) for this directory?",
repoNames,
)
if err != nil {
return nil, err
}
}
// determine corresponding git remote
selectedRepo := repoMap[baseName]
selectedRepoInfo, _ := FromFullName(selectedRepo.HTTPURLToRepo)
resolution := "base"
remote, _ := r.RemoteForRepo(selectedRepoInfo)
if remote == nil {
remote = r.remotes[0]
resolution, _ = FullNameFromURL(selectedRepo.HTTPURLToRepo)
resolution = "base:" + resolution
}
// cache the result to git config
err := git.SetRemoteResolution(remote.Name, resolution)
return selectedRepoInfo, err
}
func (r *ResolvedRemotes) HeadRepo(interactive bool) (Interface, error) {
if r.baseOverride != nil {
return r.baseOverride, nil
}
// if any of the remotes already has a resolution, respect that
for _, r := range r.remotes {
if r.Resolved == "head" {
return r, nil
} else if strings.HasPrefix(r.Resolved, "head:") {
repo, err := FromFullName(strings.TrimPrefix(r.Resolved, "head:"))
if err != nil {
return nil, err
}
return NewWithHost(repo.RepoOwner(), repo.RepoName(), r.RepoHost()), nil
}
}
// from here on, consult the API
if r.network == nil {
resolveNetwork(r)
if len(r.network) == 0 {
return nil, errors.New("no GitLab Projects found from remotes")
}
}
var repoNames []string
repoMap := map[string]*gitlab.Project{}
add := func(r *gitlab.Project) {
fn, _ := FullNameFromURL(r.HTTPURLToRepo)
if _, ok := repoMap[fn]; !ok {
repoMap[fn] = r
repoNames = append(repoNames, fn)
}
}
for i := range r.network {
if r.network[i].ForkedFromProject != nil {
fProject, _ := api.GetProject(r.apiClient, r.network[i].ForkedFromProject.PathWithNamespace)
add(fProject)
}
add(&r.network[i])
}
headName := repoNames[0]
if len(repoNames) > 1 {
if !interactive {
// We cannot prompt so get the first repo that is a fork
for _, repo := range repoNames {
if repoMap[repo].ForkedFromProject != nil {
selectedRepoInfo, _ := FromFullName((repoMap[repo].HTTPURLToRepo))
remote, _ := r.RemoteForRepo(selectedRepoInfo)
return remote, nil
}
}
// There are no forked repos so return the first repo
return r.remotes[0], nil
}
err := prompt.Select(
&headName,
"head",
"Which should be the head repository (where branches are pushed) for this directory?",
repoNames,
)
if err != nil {
return nil, err
}
}
// determine corresponding git remote
selectedRepo := repoMap[headName]
selectedRepoInfo, _ := FromFullName(selectedRepo.HTTPURLToRepo)
resolution := "head"
remote, _ := r.RemoteForRepo(selectedRepoInfo)
if remote == nil {
remote = r.remotes[0]
resolution, _ = FullNameFromURL(selectedRepo.HTTPURLToRepo)
resolution = "head:" + resolution
}
// cache the result to git config
err := git.SetRemoteResolution(remote.Name, resolution)
return selectedRepoInfo, err
}
// RemoteForRepo finds the git remote that points to a repository
func (r *ResolvedRemotes) RemoteForRepo(repo Interface) (*Remote, error) {
for _, remote := range r.remotes {
if IsSame(remote, repo) {
return remote, nil
}
}
return nil, errors.New("not found")
}