feat: parse existing release pr

cmd/rp/cmd/run.go

@@ -4,6 +4,7 @@ Copyright © 2024 Julian Tölle
 package cmd
 
 import (
+	"context"
 	"fmt"
 
 	"github.com/spf13/cobra"
@@ -11,6 +12,10 @@ import (
 	rp "github.com/apricote/releaser-pleaser"
 )
 
+const (
+	RELEASER_PLEASER_BRANCH = "releaser-pleaser--branches--%s"
+)
+
 // runCmd represents the run command
 var runCmd = &cobra.Command{
 	Use:  "run",
@@ -56,34 +61,65 @@ func run(cmd *cobra.Command, args []string) error {
 		})
 	}
 
-	tag, err := f.LatestTag(ctx)
+	changesets, err := getChangesetsFromForge(ctx, f)
 	if err != nil {
-		return err
+		return fmt.Errorf("failed to get changesets: %w", err)
+	}
+
+	err = reconcileReleasePR(ctx, f, changesets)
+	if err != nil {
+		return fmt.Errorf("failed to reconcile release pr: %w", err)
+	}
+
+	return nil
+}
+
+func getChangesetsFromForge(ctx context.Context, forge rp.Forge) ([]rp.Changeset, error) {
+	tag, err := forge.LatestTag(ctx)
+	if err != nil {
+		return nil, err
 	}
 
 	logger.InfoContext(ctx, "Latest Tag", "tag.hash", tag.Hash, "tag.name", tag.Name)
 
-	releaseableCommits, err := f.CommitsSince(ctx, tag)
+	releasableCommits, err := forge.CommitsSince(ctx, tag)
 	if err != nil {
-		return err
+		return nil, err
 	}
 
-	logger.InfoContext(ctx, "Found releasable commits", "length", len(releaseableCommits))
+	logger.InfoContext(ctx, "Found releasable commits", "length", len(releasableCommits))
 
-	changesets, err := f.Changesets(ctx, releaseableCommits)
+	changesets, err := forge.Changesets(ctx, releasableCommits)
 	if err != nil {
-		return err
+		return nil, err
 	}
 
 	logger.InfoContext(ctx, "Found changesets", "length", len(changesets))
 
-	for _, changeset := range changesets {
-		fmt.Printf("%s %s\n", changeset.Identifier, changeset.URL)
-		for _, entry := range changeset.ChangelogEntries {
-			fmt.Printf("  - %s %s\n", entry.Hash, entry.Description)
-		}
+	return changesets, nil
+}
+
+func reconcileReleasePR(ctx context.Context, forge rp.Forge, changesets []rp.Changeset) error {
+	// Check Forge for open PR
+	// Get any modifications from open PR
+	// Clone Repo
+	// Run Updaters + Changelog
+	// Upsert PR
+	pr, err := forge.PullRequestForBranch(ctx, fmt.Sprintf(RELEASER_PLEASER_BRANCH, flagBranch))
+	if err != nil {
+		return err
 	}
-	fmt.Printf("Previous Tag: %s\n", tag.Name)
+
+	if pr != nil {
+		logger.InfoContext(ctx, "found existing release pull request: %d: %s", pr.ID, pr.Title)
+	}
+
+	releaseOverrides, err := pr.GetOverrides()
+	if err != nil {
+		return err
+	}
+
+	// ...
 
 	return nil
 }