From 29c27575d585a3c8820e1c506ae7f9e0d288eff7 Mon Sep 17 00:00:00 2001
From: David Hiendl <david.hiendl@dhswt.de>
Date: Sat, 2 Dec 2023 16:46:53 +0100
Subject: [PATCH] detect branch and parse semver

---
 action.js              | 54 +++++++++++++++++++++++++++++++++++-------
 action.yml             |  8 +++++--
 node_modules/.bin/uuid |  3 ++-
 3 files changed, 54 insertions(+), 11 deletions(-)
 mode change 120000 => 100755 node_modules/.bin/uuid

diff --git a/action.js b/action.js
index 4a480e9..a7c929e 100644
--- a/action.js
+++ b/action.js
@@ -5,25 +5,63 @@ import * as semverParser from 'semver-parser';
 
 
 try {
-  // `who-to-greet` input defined in action metadata file
-  const stripTaxPrefix = core.getBooleanInput('strip_tag_prefix');
+  const stripTagPrefix = core.getInput('strip_tag_prefix');
 
   console.log(JSON.stringify(github.context))
-  console.log("github.context.ref="+github.context.ref)
+  console.log("github.context.ref=" + github.context.ref)
   
   const isTag = github.context.ref.startsWith("refs/tags/")
   core.setOutput("git_is_tag", isTag ? "true" : "false")
 
+  const defaultBranch = github.context.payload?.repository?.defaultBranch
+  core.setOutput("git_default_branch", defaultBranch)
 
-  if(!isTag) {
-    const baseRef = github.context.payload?.pull_request?.base?.ref || process.env.BODY_REF
+  const isPullRequest = github.context.payload.pull_request != null
+  core.setOutput("git_is_pull_request", isPullRequest)
+
+  if(isPullRequest) {
+    const baseRef = github.context.baseRef || process.env.BODY_REF
     const headRef = github.context.payload?.pull_request?.head?.ref || process.env.HEAD_REF
-    console.log("baseRef="+baseRef)
-    console.log("headRef="+headRef)
+    console.log("baseRef=" + baseRef)
+    console.log("headRef=" + headRef)
+    
+  } else if(!isTag) {
+    if(!github.context.ref.startsWith("refs/head/")) {
+        throw new Error("Failed to determine branch for non-PR and non-Tag action")
+    }
+    const currentBranch = github.context.ref.slice("refs/head/".length)
+    console.log("git_current_branch=" + currentBranch)
+    core.setOutput("git_current_branch", currentBranch)
+
+    const isDefaultBranch = currentBranch == defaultBranch
+    console.log("git_current_branch=" + isDefaultBranch ? "true" : "false")
+    core.setOutput("git_is_default_branch", isDefaultBranch ? "true" : "false")
   }
 
+  if(isTag) {
+    const tag = github.context.ref.slice("refs/tags/".length)
+    console.log("git_tag=" + tag)
+    core.setOutput("git_tag", tag)
 
-  // const parsed = semverParser.parseSemVer("1.1.1+abc")
+    const parsed = semverParser.parseSemVer(tag)
+    console.log("semver=" + JSON.stringify(parsed))
+
+    core.setOutput("semver_valid", parsed.matches ? "true" : "false")
+    core.setOutput("semver_major", parsed.major)
+    core.setOutput("semver_minor", parsed.minor)
+    core.setOutput("semver_patch", parsed.patch)
+    core.setOutput("semver_build", parsed.build)
+    core.setOutput("semver_pre", parsed.pre)
+  } else {
+    core.setOutput("git_tag", "false")
+    core.setOutput("semver_valid", "false")
+    core.setOutput("semver_major", "false")
+    core.setOutput("semver_minor", "false")
+    core.setOutput("semver_patch", "false")
+    core.setOutput("semver_build", "false")
+    core.setOutput("semver_pre", "false")
+  }
+  
 
 } catch (error) {
   core.setFailed(error.message);
diff --git a/action.yml b/action.yml
index c514977..a36b7b7 100644
--- a/action.yml
+++ b/action.yml
@@ -1,10 +1,10 @@
 name: Branch Names
 description: Retrieve github branch or tag information without the /ref/* prefix
-author: tj-actions
+author: David Hiendl
 inputs:
   strip_tag_prefix:
     description: 'The prefix that should be stripped from the tag e.g `v` -> with a tag `v0.0.1` -> returns `0.0.1`'
-    default: "false"
+    default: ""
     required: false
 
 outputs:
@@ -36,6 +36,10 @@ outputs:
     description: "Semver minor version"
   semver_patch:
     description: "Semver patch version"
+  semver_build:
+    description: "Semver build string"
+  semver_pre:
+    description: "Semver pre-release version"
 
 runs:
   using: "node20"
diff --git a/node_modules/.bin/uuid b/node_modules/.bin/uuid
deleted file mode 120000
index 588f70e..0000000
--- a/node_modules/.bin/uuid
+++ /dev/null
@@ -1 +0,0 @@
-../uuid/dist/bin/uuid
\ No newline at end of file
diff --git a/node_modules/.bin/uuid b/node_modules/.bin/uuid
new file mode 100755
index 0000000..f38d2ee
--- /dev/null
+++ b/node_modules/.bin/uuid
@@ -0,0 +1,2 @@
+#!/usr/bin/env node
+require('../uuid-bin');