feat(force-pull-requests): support forced pull requests and pull requ…

…ests checks

cmd/content.go

@@ -25,6 +25,7 @@ var contentCmd = &cobra.Command{
 }
 
 func init() {
+
 	contentCmd.Flags().Bool("create-branch", true, "create missing target branch")
 	viper.BindPFlag("create-branch", contentCmd.Flags().Lookup("create-branch"))
 	viper.BindEnv("create-branch", "GHUP_CREATE_BRANCH")
@@ -177,9 +178,34 @@ func runContentCmd(cmd *cobra.Command, args []string) (err error) {
 		return errors.Wrap(err, "CommitOnBranchV4")
 	}
 
-	if title := viper.GetString("pr-title"); newBranch && title != "" {
+
+
+	if title := viper.GetString("pr-title"); title != "" {
+		existingPR, err := client.GetOpenPullRequestV4(owner, repo, branch, baseBranch)
+		if err != nil {
+			return errors.Wrap(err, "GetOpenPullRequestV4")
+		}
+
+		if existingPR != nil {
+			log.Infof("existing pull request found: %s", existingPR.URL)
+			return nil
+		}
+
+		if title := viper.GetString("pr-title"); (newBranch || (existingPR == nil)) && title != "" {
 		body := githubv4.String(viper.GetString("pr-body"))
 		log.Infof("opening pull request from %q to %q", branch, baseBranch)
+
+		existingPR, err := client.GetOpenPullRequestV4(owner, repo, branch, baseBranch)
+		if err != nil {
+			return errors.Wrap(err, "GetOpenPullRequestV4")
+		}
+
+		if existingPR != nil {
+			log.Infof("existing pull request found: %s", existingPR.URL)
+			fmt.Println(existingPR.URL)
+			return nil
+		}
+
 		input := githubv4.CreatePullRequestInput{
 			RepositoryID: repoInfo.NodeID,
 			BaseRefName:  githubv4.String(baseBranch),
@@ -197,5 +223,6 @@ func runContentCmd(cmd *cobra.Command, args []string) (err error) {
 	} else {
 		fmt.Println(commitUrl)
 	}
+
 	return
 }

internal/remote/client.go

@@ -32,6 +32,12 @@ type RepositoryInfo struct {
 	TargetBranch  BranchInfo
 }
 
+type PullRequest struct {
+	Number int
+	Title  string
+	URL    string
+}
+
 type RepositoryInfoQuery struct {
 	Repository struct {
 		Id               githubv4.String
@@ -229,6 +235,43 @@ func (c *TokenClient) GetRefOidV4(owner string, repo string, refName string) (oi
 	return
 }
 
+func (c *TokenClient) GetOpenPullRequestV4(owner, repo, headRefName, baseRefName string) (*PullRequest, error) {
+	var query struct {
+		Repository struct {
+			PullRequests struct {
+				Nodes []struct {
+					Number int
+					Title  string
+					URL    string
+				}
+			} `graphql:"pullRequests(states: OPEN, headRefName: $headRefName, baseRefName: $baseRefName, first: 1)"`
+		} `graphql:"repository(owner: $owner, name: $repo)"`
+	}
+
+	variables := map[string]interface{}{
+		"owner":       githubv4.String(owner),
+		"repo":        githubv4.String(repo),
+		"headRefName": githubv4.String(headRefName),
+		"baseRefName": githubv4.String(baseRefName),
+	}
+
+	err := c.V4.Query(c.Context, &query, variables)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(query.Repository.PullRequests.Nodes) > 0 {
+		pr := query.Repository.PullRequests.Nodes[0]
+		return &PullRequest{
+			Number: pr.Number,
+			Title:  pr.Title,
+			URL:    pr.URL,
+		}, nil
+	}
+
+	return nil, nil
+}
+
 func (c *TokenClient) CreateRefV4(input githubv4.CreateRefInput) (err error) {
 	var mutation CreateRefV4Mutation