feat: support GITHUB_REF_NAME & GITHUB_REF_TYPE (#1142)

* feat: support `_REF_NAME` & `_REF_TYPE`

* chore: fix `step_test::TestSetupEnv`

* fix: logic & test

* test: delete `GITHUB_REF_NAME`, `GITHUB_REF_TYPE`

Author: thiskevinwang

Diff for: pkg/model/github_context.go

@@ -18,6 +18,8 @@ type GithubContext struct {
 	EventName        string                 `json:"event_name"`
 	Sha              string                 `json:"sha"`
 	Ref              string                 `json:"ref"`
+	RefName          string                 `json:"ref_name"`
+	RefType          string                 `json:"ref_type"`
 	HeadRef          string                 `json:"head_ref"`
 	BaseRef          string                 `json:"base_ref"`
 	Token            string                 `json:"token"`

Diff for: pkg/runner/run_context.go

@@ -549,6 +549,15 @@ func (rc *RunContext) getGithubContext() *model.GithubContext {
 
 	ghc.SetRefAndSha(rc.Config.DefaultBranch, repoPath)
 
+	// https://docs.github.com/en/actions/learn-github-actions/environment-variables
+	if strings.HasPrefix(ghc.Ref, "refs/tags/") {
+		ghc.RefType = "tag"
+		ghc.RefName = ghc.Ref[len("refs/tags/"):]
+	} else if strings.HasPrefix(ghc.Ref, "refs/heads/") {
+		ghc.RefType = "branch"
+		ghc.RefName = ghc.Ref[len("refs/heads/"):]
+	}
+
 	return ghc
 }
 
@@ -624,6 +633,8 @@ func (rc *RunContext) withGithubEnv(env map[string]string) map[string]string {
 	env["GITHUB_WORKSPACE"] = github.Workspace
 	env["GITHUB_SHA"] = github.Sha
 	env["GITHUB_REF"] = github.Ref
+	env["GITHUB_REF_NAME"] = github.RefName
+	env["GITHUB_REF_TYPE"] = github.RefType
 	env["GITHUB_TOKEN"] = github.Token
 	env["GITHUB_SERVER_URL"] = "https://github.com"
 	env["GITHUB_API_URL"] = "https://api.github.com"

Diff for: pkg/runner/step_test.go

@@ -154,6 +154,8 @@ func TestSetupEnv(t *testing.T) {
 
 	// These are commit or system specific
 	delete((env), "GITHUB_REF")
+	delete((env), "GITHUB_REF_NAME")
+	delete((env), "GITHUB_REF_TYPE")
 	delete((env), "GITHUB_SHA")
 	delete((env), "GITHUB_WORKSPACE")
 	delete((env), "GITHUB_REPOSITORY")