From 8c703e3ab83d249599ef4ac1bebfc58ae1789b67 Mon Sep 17 00:00:00 2001
From: Steve Boyd <emteknetnz@gmail.com>
Date: Wed, 21 Feb 2024 10:02:18 +1300
Subject: [PATCH] ENH Handle CMS 6 branches

---
 action.yml | 64 ++++++++++++++++++++++++++++++++++--------------------
 1 file changed, 41 insertions(+), 23 deletions(-)

diff --git a/action.yml b/action.yml
index f446f17..0945cd3 100644
--- a/action.yml
+++ b/action.yml
@@ -21,8 +21,8 @@ runs:
           date_part=$(date +%H)
         fi
         if (( $date_part % 2 == 1 )); then
-          # latest major, next-minor e.g. "5"
-          type=latest,next-minor
+          # current major, next-minor e.g. "5"
+          type=current,next-minor
         else
           # previous major, next-patch e.g. "4.13"
           type=previous,next-patch
@@ -34,13 +34,21 @@ runs:
       shell: bash
       env:
         TYPE: ${{ steps.gettype.outputs.type }}
+        GITHUB_REPOSITORY: ${{ github.repository }}
       run: |
         major_type=$(echo $TYPE | cut -d "," -f 1)
         minor_type=$(echo $TYPE | cut -d "," -f 2)
+        has_cms6_major="true"
+        if [[ $GITHUB_REPOSITORY == "silverstripe/recipe-plugin" ]] || \
+            [[ $GITHUB_REPOSITORY == "silverstripe/vendor-plugin" ]] || \
+            [[ $GITHUB_REPOSITORY == "silverstripe/silverstripe-graphql-devtools" ]]
+        then
+          has_cms6_major="false"
+        fi
         # https://docs.github.com/en/rest/branches/branches#list-branches
         RESP_CODE=$(curl -w %{http_code} -s -L -o __branches.json \
           -H "Accept: application/vnd.github+json" \
-          -H "Authorization: Bearer ${{ github.token }}"\
+          -H "Authorization: Bearer ${{ github.token }}" \
           -H "X-GitHub-Api-Version: 2022-11-28" \
           https://api.github.com/repos/$GITHUB_REPOSITORY/branches \
         )
@@ -53,32 +61,42 @@ runs:
         major_branches=$(jq -r '.[] | select(.name | test("^[0-9]+$")) | .name' __branches.json | sort -V -r)
         # "major_branches" needs to be quoted to preserve line-breaks
         major_branches_count=$(echo "$major_branches" | wc -l)
-        if [[ $major_type == "latest" ]]; then
-            if (( $major_branches_count < 1 )); then
-                echo "No major branches found"
-                exit 1
-            fi
-            major_branch=$(echo "$major_branches" | head -1)
-        elif [[ $major_type == "previous" ]]; then
-            if (( $major_branches_count < 2 )); then
-                echo "Only one major branch found, not running CI on this cycle - will run on next cycle"
-                exit 0
-            fi
+        if [[ $major_type == "current" ]]; then
+          if (( $major_branches_count < 1 )); then
+            echo "No major branches found"
+            exit 1
+          fi
+          major_branch=$(echo "$major_branches" | head -1)
+          if (( $major_branches_count >= 2 )) && [[ $has_cms6_major == "true" ]]; then
+            # There are CMS 6 major dev branches though no CMS 6 tagged releases yet
+            # Assume that the 2nd major branch is the current major branch
             major_branch=$(echo "$major_branches" | head -2 | tail -1)
+          fi
+        elif [[ $major_type == "previous" ]]; then
+          if (( $major_branches_count < 2 )); then
+            echo "Only one major branch found, not running CI on this cycle - will run on next cycle"
+            exit 0
+          fi
+          major_branch=$(echo "$major_branches" | head -2 | tail -1)
+          if (( $major_branches_count >= 2 )) && [[ $has_cms6_major == "true" ]]; then
+            # There are CMS 6 major dev branches though no CMS 6 tagged releases yet
+            # Assume that the 3rd major branch is the previous major branch
+            major_branch=$(echo "$major_branches" | head -3 | tail -1)
+          fi
         fi
         if [[ $minor_type == "next-patch" ]]; then
-            # not escaping rx . as \. because jq will say it is a compile error
-            minor_branches=$(jq -r ".[] | select(.name | test(\"^$major_branch.[0-9]+$\")) | .name" __branches.json | sort -V -r)
-            minor_branches_count=$(echo "$minor_branches" | wc -l)
-            if (( $minor_branches_count < 1 )); then
-                echo "No minor branches found"
-                exit 1
-            fi
-            minor_branch=$(echo "$minor_branches" | head -1)
+          # not escaping rx . as \. because jq will say it is a compile error
+          minor_branches=$(jq -r ".[] | select(.name | test(\"^$major_branch.[0-9]+$\")) | .name" __branches.json | sort -V -r)
+          minor_branches_count=$(echo "$minor_branches" | wc -l)
+          if (( $minor_branches_count < 1 )); then
+            echo "No minor branches found"
+            exit 1
+          fi
+          minor_branch=$(echo "$minor_branches" | head -1)
         fi
         branch=$major_branch
         if [[ $minor_branch != "" ]]; then
-            branch="$minor_branch"
+          branch="$minor_branch"
         fi
         rm __branches.json
         echo "branch is $branch"