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package create
import (
"errors"
"fmt"
"net/http"
"net/url"
"regexp"
"strings"
"time"
"github.com/AlecAivazis/survey/v2"
"github.com/MakeNowJust/heredoc"
"github.com/cli/cli/v2/api"
"github.com/cli/cli/v2/context"
"github.com/cli/cli/v2/git"
"github.com/cli/cli/v2/internal/config"
"github.com/cli/cli/v2/internal/ghrepo"
"github.com/cli/cli/v2/pkg/cmd/pr/shared"
"github.com/cli/cli/v2/pkg/cmdutil"
"github.com/cli/cli/v2/pkg/iostreams"
"github.com/cli/cli/v2/pkg/prompt"
"github.com/cli/cli/v2/utils"
"github.com/spf13/cobra"
)
type browser interface {
Browse(string) error
}
type CreateOptions struct {
// This struct stores user input and factory functions
HttpClient func() (*http.Client, error)
Config func() (config.Config, error)
IO *iostreams.IOStreams
Remotes func() (context.Remotes, error)
Branch func() (string, error)
Browser browser
Finder shared.PRFinder
TitleProvided bool
BodyProvided bool
RootDirOverride string
RepoOverride string
Autofill bool
WebMode bool
RecoverFile string
IsDraft bool
Title string
Body string
BaseBranch string
HeadBranch string
Reviewers []string
Assignees []string
Labels []string
Projects []string
Milestone string
MaintainerCanModify bool
}
type CreateContext struct {
// This struct stores contextual data about the creation process and is for building up enough
// data to create a pull request
RepoContext *context.ResolvedRemotes
BaseRepo *api.Repository
HeadRepo ghrepo.Interface
BaseTrackingBranch string
BaseBranch string
HeadBranch string
HeadBranchLabel string
HeadRemote *context.Remote
IsPushEnabled bool
Client *api.Client
}
func NewCmdCreate(f *cmdutil.Factory, runF func(*CreateOptions) error) *cobra.Command {
opts := &CreateOptions{
IO: f.IOStreams,
HttpClient: f.HttpClient,
Config: f.Config,
Remotes: f.Remotes,
Branch: f.Branch,
Browser: f.Browser,
}
var bodyFile string
cmd := &cobra.Command{
Use: "create",
Short: "Create a pull request",
Long: heredoc.Docf(`
Create a pull request on GitHub.
When the current branch isn't fully pushed to a git remote, a prompt will ask where
to push the branch and offer an option to fork the base repository. Use %[1]s--head%[1]s to
explicitly skip any forking or pushing behavior.
A prompt will also ask for the title and the body of the pull request. Use %[1]s--title%[1]s
and %[1]s--body%[1]s to skip this, or use %[1]s--fill%[1]s to autofill these values from git commits.
Link an issue to the pull request by referencing the issue in the body of the pull
request. If the body text mentions %[1]sFixes #123%[1]s or %[1]sCloses #123%[1]s, the referenced issue
will automatically get closed when the pull request gets merged.
By default, users with write access to the base repository can push new commits to the
head branch of the pull request. Disable this with %[1]s--no-maintainer-edit%[1]s.
`, "`"),
Example: heredoc.Doc(`
$ gh pr create --title "The bug is fixed" --body "Everything works again"
$ gh pr create --reviewer monalisa,hubot --reviewer myorg/team-name
$ gh pr create --project "Roadmap"
$ gh pr create --base develop --head monalisa:feature
`),
Args: cmdutil.NoArgsQuoteReminder,
RunE: func(cmd *cobra.Command, args []string) error {
opts.Finder = shared.NewFinder(f)
opts.TitleProvided = cmd.Flags().Changed("title")
opts.RepoOverride, _ = cmd.Flags().GetString("repo")
noMaintainerEdit, _ := cmd.Flags().GetBool("no-maintainer-edit")
opts.MaintainerCanModify = !noMaintainerEdit
if !opts.IO.CanPrompt() && opts.RecoverFile != "" {
return &cmdutil.FlagError{Err: errors.New("`--recover` only supported when running interactively")}
}
if !opts.IO.CanPrompt() && !opts.WebMode && !opts.TitleProvided && !opts.Autofill {
return &cmdutil.FlagError{Err: errors.New("`--title` or `--fill` required when not running interactively")}
}
if opts.IsDraft && opts.WebMode {
return errors.New("the `--draft` flag is not supported with `--web`")
}
if len(opts.Reviewers) > 0 && opts.WebMode {
return errors.New("the `--reviewer` flag is not supported with `--web`")
}
if cmd.Flags().Changed("no-maintainer-edit") && opts.WebMode {
return errors.New("the `--no-maintainer-edit` flag is not supported with `--web`")
}
opts.BodyProvided = cmd.Flags().Changed("body")
if bodyFile != "" {
b, err := cmdutil.ReadFile(bodyFile, opts.IO.In)
if err != nil {
return err
}
opts.Body = string(b)
opts.BodyProvided = true
}
if runF != nil {
return runF(opts)
}
return createRun(opts)
},
}
fl := cmd.Flags()
fl.BoolVarP(&opts.IsDraft, "draft", "d", false, "Mark pull request as a draft")
fl.StringVarP(&opts.Title, "title", "t", "", "Title for the pull request")
fl.StringVarP(&opts.Body, "body", "b", "", "Body for the pull request")
fl.StringVarP(&bodyFile, "body-file", "F", "", "Read body text from `file`")
fl.StringVarP(&opts.BaseBranch, "base", "B", "", "The `branch` into which you want your code merged")
fl.StringVarP(&opts.HeadBranch, "head", "H", "", "The `branch` that contains commits for your pull request (default: current branch)")
fl.BoolVarP(&opts.WebMode, "web", "w", false, "Open the web browser to create a pull request")
fl.BoolVarP(&opts.Autofill, "fill", "f", false, "Do not prompt for title/body and just use commit info")
fl.StringSliceVarP(&opts.Reviewers, "reviewer", "r", nil, "Request reviews from people or teams by their `handle`")
fl.StringSliceVarP(&opts.Assignees, "assignee", "a", nil, "Assign people by their `login`. Use \"@me\" to self-assign.")
fl.StringSliceVarP(&opts.Labels, "label", "l", nil, "Add labels by `name`")
fl.StringSliceVarP(&opts.Projects, "project", "p", nil, "Add the pull request to projects by `name`")
fl.StringVarP(&opts.Milestone, "milestone", "m", "", "Add the pull request to a milestone by `name`")
fl.Bool("no-maintainer-edit", false, "Disable maintainer's ability to modify pull request")
fl.StringVar(&opts.RecoverFile, "recover", "", "Recover input from a failed run of create")
return cmd
}
func createRun(opts *CreateOptions) (err error) {
ctx, err := NewCreateContext(opts)
if err != nil {
return
}
client := ctx.Client
state, err := NewIssueState(*ctx, *opts)
if err != nil {
return
}
var openURL string
if opts.WebMode {
if !opts.Autofill {
state.Title = opts.Title
state.Body = opts.Body
}
err = handlePush(*opts, *ctx)
if err != nil {
return
}
openURL, err = generateCompareURL(*ctx, *state)
if err != nil {
return
}
if !utils.ValidURL(openURL) {
err = fmt.Errorf("cannot open in browser: maximum URL length exceeded")
return
}
return previewPR(*opts, openURL)
}
if opts.TitleProvided {
state.Title = opts.Title
}
if opts.BodyProvided {
state.Body = opts.Body
}
existingPR, _, err := opts.Finder.Find(shared.FindOptions{
Selector: ctx.HeadBranchLabel,
BaseBranch: ctx.BaseBranch,
States: []string{"OPEN"},
Fields: []string{"url"},
})
var notFound *shared.NotFoundError
if err != nil && !errors.As(err, ¬Found) {
return fmt.Errorf("error checking for existing pull request: %w", err)
}
if err == nil {
return fmt.Errorf("a pull request for branch %q into branch %q already exists:\n%s",
ctx.HeadBranchLabel, ctx.BaseBranch, existingPR.URL)
}
message := "\nCreating pull request for %s into %s in %s\n\n"
if state.Draft {
message = "\nCreating draft pull request for %s into %s in %s\n\n"
}
cs := opts.IO.ColorScheme()
if opts.IO.CanPrompt() {
fmt.Fprintf(opts.IO.ErrOut, message,
cs.Cyan(ctx.HeadBranchLabel),
cs.Cyan(ctx.BaseBranch),
ghrepo.FullName(ctx.BaseRepo))
}
if opts.Autofill || (opts.TitleProvided && opts.BodyProvided) {
err = handlePush(*opts, *ctx)
if err != nil {
return
}
return submitPR(*opts, *ctx, *state)
}
if opts.RecoverFile != "" {
err = shared.FillFromJSON(opts.IO, opts.RecoverFile, state)
if err != nil {
return fmt.Errorf("failed to recover input: %w", err)
}
}
if !opts.TitleProvided {
err = shared.TitleSurvey(state)
if err != nil {
return
}
}
editorCommand, err := cmdutil.DetermineEditor(opts.Config)
if err != nil {
return
}
defer shared.PreserveInput(opts.IO, state, &err)()
if !opts.BodyProvided {
templateContent := ""
if opts.RecoverFile == "" {
tpl := shared.NewTemplateManager(client.HTTP(), ctx.BaseRepo, opts.RootDirOverride, opts.RepoOverride == "", true)
var template shared.Template
template, err = tpl.Choose()
if err != nil {
return
}
if template != nil {
templateContent = string(template.Body())
} else {
templateContent = string(tpl.LegacyBody())
}
}
err = shared.BodySurvey(state, templateContent, editorCommand)
if err != nil {
return
}
}
openURL, err = generateCompareURL(*ctx, *state)
if err != nil {
return
}
allowPreview := !state.HasMetadata() && utils.ValidURL(openURL)
allowMetadata := ctx.BaseRepo.ViewerCanTriage()
action, err := shared.ConfirmSubmission(allowPreview, allowMetadata)
if err != nil {
return fmt.Errorf("unable to confirm: %w", err)
}
if action == shared.MetadataAction {
fetcher := &shared.MetadataFetcher{
IO: opts.IO,
APIClient: client,
Repo: ctx.BaseRepo,
State: state,
}
err = shared.MetadataSurvey(opts.IO, ctx.BaseRepo, fetcher, state)
if err != nil {
return
}
action, err = shared.ConfirmSubmission(!state.HasMetadata(), false)
if err != nil {
return
}
}
if action == shared.CancelAction {
fmt.Fprintln(opts.IO.ErrOut, "Discarding.")
err = cmdutil.CancelError
return
}
err = handlePush(*opts, *ctx)
if err != nil {
return
}
if action == shared.PreviewAction {
return previewPR(*opts, openURL)
}
if action == shared.SubmitAction {
return submitPR(*opts, *ctx, *state)
}
err = errors.New("expected to cancel, preview, or submit")
return
}
func initDefaultTitleBody(ctx CreateContext, state *shared.IssueMetadataState) error {
baseRef := ctx.BaseTrackingBranch
headRef := ctx.HeadBranch
commits, err := git.Commits(baseRef, headRef)
if err != nil {
return err
}
if len(commits) == 1 {
state.Title = commits[0].Title
body, err := git.CommitBody(commits[0].Sha)
if err != nil {
return err
}
state.Body = body
} else {
state.Title = utils.Humanize(headRef)
var body strings.Builder
for i := len(commits) - 1; i >= 0; i-- {
fmt.Fprintf(&body, "- %s\n", commits[i].Title)
}
state.Body = body.String()
}
return nil
}
func determineTrackingBranch(remotes context.Remotes, headBranch string) *git.TrackingRef {
refsForLookup := []string{"HEAD"}
var trackingRefs []git.TrackingRef
headBranchConfig := git.ReadBranchConfig(headBranch)
if headBranchConfig.RemoteName != "" {
tr := git.TrackingRef{
RemoteName: headBranchConfig.RemoteName,
BranchName: strings.TrimPrefix(headBranchConfig.MergeRef, "refs/heads/"),
}
trackingRefs = append(trackingRefs, tr)
refsForLookup = append(refsForLookup, tr.String())
}
for _, remote := range remotes {
tr := git.TrackingRef{
RemoteName: remote.Name,
BranchName: headBranch,
}
trackingRefs = append(trackingRefs, tr)
refsForLookup = append(refsForLookup, tr.String())
}
resolvedRefs, _ := git.ShowRefs(refsForLookup...)
if len(resolvedRefs) > 1 {
for _, r := range resolvedRefs[1:] {
if r.Hash != resolvedRefs[0].Hash {
continue
}
for _, tr := range trackingRefs {
if tr.String() != r.Name {
continue
}
return &tr
}
}
}
return nil
}
func NewIssueState(ctx CreateContext, opts CreateOptions) (*shared.IssueMetadataState, error) {
var milestoneTitles []string
if opts.Milestone != "" {
milestoneTitles = []string{opts.Milestone}
}
meReplacer := shared.NewMeReplacer(ctx.Client, ctx.BaseRepo.RepoHost())
assignees, err := meReplacer.ReplaceSlice(opts.Assignees)
if err != nil {
return nil, err
}
state := &shared.IssueMetadataState{
Type: shared.PRMetadata,
Reviewers: opts.Reviewers,
Assignees: assignees,
Labels: opts.Labels,
Projects: opts.Projects,
Milestones: milestoneTitles,
Draft: opts.IsDraft,
}
if opts.Autofill || !opts.TitleProvided || !opts.BodyProvided {
err := initDefaultTitleBody(ctx, state)
if err != nil && opts.Autofill {
return nil, fmt.Errorf("could not compute title or body defaults: %w", err)
}
}
return state, nil
}
func NewCreateContext(opts *CreateOptions) (*CreateContext, error) {
httpClient, err := opts.HttpClient()
if err != nil {
return nil, err
}
client := api.NewClientFromHTTP(httpClient)
remotes, err := opts.Remotes()
if err != nil {
return nil, err
}
repoContext, err := context.ResolveRemotesToRepos(remotes, client, opts.RepoOverride)
if err != nil {
return nil, err
}
var baseRepo *api.Repository
if br, err := repoContext.BaseRepo(opts.IO); err == nil {
if r, ok := br.(*api.Repository); ok {
baseRepo = r
} else {
// TODO: if RepoNetwork is going to be requested anyway in `repoContext.HeadRepos()`,
// consider piggybacking on that result instead of performing a separate lookup
baseRepo, err = api.GitHubRepo(client, br)
if err != nil {
return nil, err
}
}
} else {
return nil, fmt.Errorf("could not determine base repository: %w", err)
}
isPushEnabled := false
headBranch := opts.HeadBranch
headBranchLabel := opts.HeadBranch
if headBranch == "" {
headBranch, err = opts.Branch()
if err != nil {
return nil, fmt.Errorf("could not determine the current branch: %w", err)
}
headBranchLabel = headBranch
isPushEnabled = true
} else if idx := strings.IndexRune(headBranch, ':'); idx >= 0 {
headBranch = headBranch[idx+1:]
}
if ucc, err := git.UncommittedChangeCount(); err == nil && ucc > 0 {
fmt.Fprintf(opts.IO.ErrOut, "Warning: %s\n", utils.Pluralize(ucc, "uncommitted change"))
}
var headRepo ghrepo.Interface
var headRemote *context.Remote
if isPushEnabled {
// determine whether the head branch is already pushed to a remote
if pushedTo := determineTrackingBranch(remotes, headBranch); pushedTo != nil {
isPushEnabled = false
if r, err := remotes.FindByName(pushedTo.RemoteName); err == nil {
headRepo = r
headRemote = r
headBranchLabel = pushedTo.BranchName
if !ghrepo.IsSame(baseRepo, headRepo) {
headBranchLabel = fmt.Sprintf("%s:%s", headRepo.RepoOwner(), pushedTo.BranchName)
}
}
}
}
// otherwise, ask the user for the head repository using info obtained from the API
if headRepo == nil && isPushEnabled && opts.IO.CanPrompt() {
pushableRepos, err := repoContext.HeadRepos()
if err != nil {
return nil, err
}
if len(pushableRepos) == 0 {
pushableRepos, err = api.RepoFindForks(client, baseRepo, 3)
if err != nil {
return nil, err
}
}
currentLogin, err := api.CurrentLoginName(client, baseRepo.RepoHost())
if err != nil {
return nil, err
}
hasOwnFork := false
var pushOptions []string
for _, r := range pushableRepos {
pushOptions = append(pushOptions, ghrepo.FullName(r))
if r.RepoOwner() == currentLogin {
hasOwnFork = true
}
}
if !hasOwnFork {
pushOptions = append(pushOptions, "Create a fork of "+ghrepo.FullName(baseRepo))
}
pushOptions = append(pushOptions, "Skip pushing the branch")
pushOptions = append(pushOptions, "Cancel")
var selectedOption int
err = prompt.SurveyAskOne(&survey.Select{
Message: fmt.Sprintf("Where should we push the '%s' branch?", headBranch),
Options: pushOptions,
}, &selectedOption)
if err != nil {
return nil, err
}
if selectedOption < len(pushableRepos) {
headRepo = pushableRepos[selectedOption]
if !ghrepo.IsSame(baseRepo, headRepo) {
headBranchLabel = fmt.Sprintf("%s:%s", headRepo.RepoOwner(), headBranch)
}
} else if pushOptions[selectedOption] == "Skip pushing the branch" {
isPushEnabled = false
} else if pushOptions[selectedOption] == "Cancel" {
return nil, cmdutil.CancelError
} else {
// "Create a fork of ..."
if baseRepo.IsPrivate {
return nil, fmt.Errorf("cannot fork private repository %s", ghrepo.FullName(baseRepo))
}
headBranchLabel = fmt.Sprintf("%s:%s", currentLogin, headBranch)
}
}
if headRepo == nil && isPushEnabled && !opts.IO.CanPrompt() {
fmt.Fprintf(opts.IO.ErrOut, "aborted: you must first push the current branch to a remote, or use the --head flag")
return nil, cmdutil.SilentError
}
baseBranch := opts.BaseBranch
if baseBranch == "" {
baseBranch = baseRepo.DefaultBranchRef.Name
}
if headBranch == baseBranch && headRepo != nil && ghrepo.IsSame(baseRepo, headRepo) {
return nil, fmt.Errorf("must be on a branch named differently than %q", baseBranch)
}
baseTrackingBranch := baseBranch
if baseRemote, err := remotes.FindByRepo(baseRepo.RepoOwner(), baseRepo.RepoName()); err == nil {
baseTrackingBranch = fmt.Sprintf("%s/%s", baseRemote.Name, baseBranch)
}
return &CreateContext{
BaseRepo: baseRepo,
HeadRepo: headRepo,
BaseBranch: baseBranch,
BaseTrackingBranch: baseTrackingBranch,
HeadBranch: headBranch,
HeadBranchLabel: headBranchLabel,
HeadRemote: headRemote,
IsPushEnabled: isPushEnabled,
RepoContext: repoContext,
Client: client,
}, nil
}
func submitPR(opts CreateOptions, ctx CreateContext, state shared.IssueMetadataState) error {
client := ctx.Client
params := map[string]interface{}{
"title": state.Title,
"body": state.Body,
"draft": state.Draft,
"baseRefName": ctx.BaseBranch,
"headRefName": ctx.HeadBranchLabel,
"maintainerCanModify": opts.MaintainerCanModify,
}
if params["title"] == "" {
return errors.New("pull request title must not be blank")
}
err := shared.AddMetadataToIssueParams(client, ctx.BaseRepo, params, &state)
if err != nil {
return err
}
opts.IO.StartProgressIndicator()
pr, err := api.CreatePullRequest(client, ctx.BaseRepo, params)
opts.IO.StopProgressIndicator()
if pr != nil {
fmt.Fprintln(opts.IO.Out, pr.URL)
}
if err != nil {
if pr != nil {
return fmt.Errorf("pull request update failed: %w", err)
}
return fmt.Errorf("pull request create failed: %w", err)
}
return nil
}
func previewPR(opts CreateOptions, openURL string) error {
if opts.IO.IsStdinTTY() && opts.IO.IsStdoutTTY() {
fmt.Fprintf(opts.IO.ErrOut, "Opening %s in your browser.\n", utils.DisplayURL(openURL))
}
return opts.Browser.Browse(openURL)
}
func handlePush(opts CreateOptions, ctx CreateContext) error {
didForkRepo := false
headRepo := ctx.HeadRepo
headRemote := ctx.HeadRemote
client := ctx.Client
var err error
// if a head repository could not be determined so far, automatically create
// one by forking the base repository
if headRepo == nil && ctx.IsPushEnabled {
opts.IO.StartProgressIndicator()
headRepo, err = api.ForkRepo(client, ctx.BaseRepo, "")
opts.IO.StopProgressIndicator()
if err != nil {
return fmt.Errorf("error forking repo: %w", err)
}
didForkRepo = true
}
if headRemote == nil && headRepo != nil {
headRemote, _ = ctx.RepoContext.RemoteForRepo(headRepo)
}
// There are two cases when an existing remote for the head repo will be
// missing:
// 1. the head repo was just created by auto-forking;
// 2. an existing fork was discovered by querying the API.
//
// In either case, we want to add the head repo as a new git remote so we
// can push to it.
if headRemote == nil && ctx.IsPushEnabled {
cfg, err := opts.Config()
if err != nil {
return err
}
cloneProtocol, _ := cfg.Get(headRepo.RepoHost(), "git_protocol")
headRepoURL := ghrepo.FormatRemoteURL(headRepo, cloneProtocol)
// TODO: prevent clashes with another remote of a same name
gitRemote, err := git.AddRemote("fork", headRepoURL)
if err != nil {
return fmt.Errorf("error adding remote: %w", err)
}
headRemote = &context.Remote{
Remote: gitRemote,
Repo: headRepo,
}
}
// automatically push the branch if it hasn't been pushed anywhere yet
if ctx.IsPushEnabled {
pushBranch := func() error {
pushTries := 0
maxPushTries := 3
for {
r := NewRegexpWriter(opts.IO.ErrOut, gitPushRegexp, "")
defer r.Flush()
cmdErr := r
cmdOut := opts.IO.Out
if err := git.Push(headRemote.Name, fmt.Sprintf("HEAD:%s", ctx.HeadBranch), cmdOut, cmdErr); err != nil {
if didForkRepo && pushTries < maxPushTries {
pushTries++
// first wait 2 seconds after forking, then 4s, then 6s
waitSeconds := 2 * pushTries
fmt.Fprintf(opts.IO.ErrOut, "waiting %s before retrying...\n", utils.Pluralize(waitSeconds, "second"))
time.Sleep(time.Duration(waitSeconds) * time.Second)
continue
}
return err
}
break
}
return nil
}
err := pushBranch()
if err != nil {
return err
}
}
return nil
}
func generateCompareURL(ctx CreateContext, state shared.IssueMetadataState) (string, error) {
u := ghrepo.GenerateRepoURL(
ctx.BaseRepo,
"compare/%s...%s?expand=1",
url.QueryEscape(ctx.BaseBranch), url.QueryEscape(ctx.HeadBranchLabel))
url, err := shared.WithPrAndIssueQueryParams(ctx.Client, ctx.BaseRepo, u, state)
if err != nil {
return "", err
}
return url, nil
}
var gitPushRegexp = regexp.MustCompile("^remote: (Create a pull request.*by visiting|[[:space:]]*https://.*/pull/new/).*\n?$")