feat(release): initial attempt at providing automatic builds

cmd/github-release/publish_cmd.go

@@ -0,0 +1,98 @@
+package main
+
+import (
+	"fmt"
+	"net/http"
+	"os"
+
+	"github.com/google/go-github/v35/github"
+	"github.com/urfave/cli/v2"
+)
+
+var publishCmd = &cli.Command{
+	Name:      "publish",
+	Usage:     "publish a release",
+	UsageText: "github-release [global-options] publish [options]",
+	Flags: []cli.Flag{
+		&cli.StringFlag{
+			Name:    "github-sha",
+			Aliases: []string{"s"},
+			Usage:   "Git SHA of repo to create release on",
+			EnvVars: []string{"GITHUB_SHA"},
+		},
+		&cli.BoolFlag{
+			Name:    "prerelease",
+			Usage:   "Git SHA of repo to create release on",
+			EnvVars: []string{"RELEASE_PRERELEASE"},
+			Value:   true,
+		},
+	},
+	Action: actionHandler(publishAction),
+}
+
+func publishAction(c *cli.Context, opts *globalOptions) error {
+	gh := opts.gh
+	repo := opts.repo
+	plan := opts.plan
+
+	releaseName := plan.ReleaseName()
+	githubSHA := c.String("github-sha")
+	prerelease := c.Bool("prerelease")
+
+	fmt.Printf("prerelease: %+v\n", prerelease)
+
+	assetFile, err := os.Open(plan.Archive)
+	if err != nil {
+		return err
+	}
+
+	fmt.Printf("Fetching release %s\n", releaseName)
+
+	release, resp, err := gh.Repositories.GetReleaseByTag(
+		c.Context, repo.Owner, repo.Name, releaseName,
+	)
+	if err != nil {
+		if resp.StatusCode == http.StatusNotFound {
+			fmt.Printf("Release %s not found, creating...\n", releaseName)
+			release, _, err = gh.Repositories.CreateRelease(
+				c.Context, repo.Owner, repo.Name, &github.RepositoryRelease{
+					Name:            &releaseName,
+					TagName:         &releaseName,
+					TargetCommitish: &githubSHA,
+					Prerelease:      &prerelease,
+				},
+			)
+			if err != nil {
+				return err
+			}
+		} else {
+			return err
+		}
+	}
+
+	if release.GetPrerelease() != prerelease {
+		release.Prerelease = &prerelease
+
+		release, _, err = gh.Repositories.EditRelease(
+			c.Context, repo.Owner, repo.Name, release.GetID(), release,
+		)
+		if err != nil {
+			return err
+		}
+	}
+
+	assetFilename := plan.ReleaseAsset()
+	fmt.Printf("Uploading asset %s\n", assetFilename)
+	_, _, err = gh.Repositories.UploadReleaseAsset(
+		c.Context, repo.Owner, repo.Name, release.GetID(),
+		&github.UploadOptions{Name: assetFilename},
+		assetFile,
+	)
+	if err != nil {
+		return err
+	}
+
+	fmt.Printf("Release published at: %s\n", release.GetHTMLURL())
+
+	return nil
+}