ci: add pod spec version check on release branch pushes (#88)

.github/workflows/validate-release.yml

@@ -0,0 +1,17 @@
+name: Validate release
+
+on:
+  push:
+    branches:
+      - 'releases/**'
+
+jobs:
+  versioncheck:
+    runs-on: macos-latest
+    name: Validate Versions
+    steps:
+      - name: Compare Podspec Version
+        uses: actions/checkout@v2
+      - name: Run Version Check Script
+        run: ./scripts/version-check.sh
+

scripts/version-check.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+readonly COCOAPOD_SPEC=Mux-Upload-SDK.podspec
+
+# Extracts the pod spec version in the form of a MAJOR.MINOR.PATCH string
+cocoapod_spec_version=$(grep -Eo '\b[0-9]+\.[0-9]+\.[0-9]+(-[0-9A-Za-z-]+)?(\+[0-9A-Za-z-]+)?\b' $COCOAPOD_SPEC | awk 'NR==1')
+
+echo "Detected Cocoapod Spec Version: ${cocoapod_spec_version}"
+
+# Checks branch name for a v followed by a semantic version MAJOR.MINOR.PATCH string
+release_version=$(git branch --show-current | sed -E 's/.*v([0-9]+\.[0-9]+\.[0-9]+).*/\1/')
+
+echo "Inferred Release Version: ${release_version}"
+
+if [ "${cocoapod_spec_version}" == "${release_version}" ]; then
+	echo "Versions match"
+else
+    echo "Versions do not match, please update ${COCOAPOD_SPEC} to ${release_version}"
+    exit 1
+fi