Feat: action to list GitHub releases

.github/actions/github-list-releases-action/README.md

@@ -0,0 +1,54 @@
+<!--
+SPDX-License-Identifier: Apache-2.0
+SPDX-FileCopyrightText: 2025 The Linux Foundation
+-->
+
+# 📦 GitHub List Releases
+
+Lists the GitHub releases for a given repository
+
+## github-list-releases-action
+
+## Usage Example
+
+When provided with a tag/version as input, will check if a release for that
+tag/version exists in the repository. Provides the list of releases as an
+output variable for other actions/workflows to consume.
+
+```yaml
+steps:
+  - name: "Check if tag/version already released"
+    id: release-check
+    # yamllint disable-line rule:line-length
+    uses: lfit/releng-reusable-workflows/.github/actions/github-list-releases-action@main
+    with:
+      tag: "v0.1.23"
+```
+
+## Inputs
+
+<!-- markdownlint-disable MD013 -->
+
+| Variable Name   | Required | Default   | Description                                  |
+| --------------- | -------- | --------- | -------------------------------------------- |
+| TAG             | False    | N/A       | Checks if this tag/version has released      |
+| SUMMARY_OUTPUT  | False    | N/A       | Display summary output                       |
+| PRODUCTION_ONLY | False    | See Below | Do not list pre-release or draft releases    |
+| RETURN_TYPE     | False    | text      | Return type set to either: text/json         |
+| JSON_FIELDS     | False    | False     | Fields to return as JSON                     |
+| ORDER           | False    | False     | Sort order set to either: asc/desc           |
+
+<!-- markdownlint-enable MD013 -->
+
+Note: Specification of JSON fields is mandatory when JSON return type requested
+
+## Outputs
+
+<!-- markdownlint-disable MD013 -->
+
+| Variable Name | Mandatory | Description                                    |
+| ------------- | --------- | ---------------------------------------------- |
+| RELEASES      | True      | List of releases as either text or JSON        |
+| RELEASED      | False     | Set true when tag/version has already released |
+
+<!-- markdownlint-enable MD013 -->

.github/actions/github-list-releases-action/action.yaml

@@ -0,0 +1,164 @@
+---
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: 2024 The Linux Foundation
+
+# github-list-releases-action
+name: "📦 List GitHub Releases"
+description: "Returns a list of releases for the current repository"
+# Limited to 1000 records due to GitHub API query limits
+# 640K ought to be enough for anybody
+# ToDo: investigate support for API query pagination
+
+inputs:
+  # Optional
+  TAG:
+    description: "Check if this tag/version has been released"
+    required: false
+    type: string
+  SUMMARY_OUTPUT:
+    description: "Displays summary output"
+    required: false
+    default: "false"
+    type: string
+  PRODUCTION_ONLY:
+    description: "Pre-release and draft releases are included"
+    required: false
+    default: "false"
+    type: string
+  RETURN_TYPE:
+    description: "Set to either: text|json"
+    required: false
+    default: "text"
+    type: string
+  JSON_FIELDS:
+    # Mandatory when return type (above) is set to JSON
+    description: "Fields to return when return type set to JSON"
+    required: false
+    default: "tagName"
+    type: string
+  ORDER:
+    description: "Sort order: asc|desc"
+    required: false
+    default: "desc"
+    type: string
+
+outputs:
+  # Mandatory
+  RELEASES:
+    description: "List of releases in specified output format"
+    value: ${{ steps.releases.outputs.releases }}
+  # Optional
+  RELEASED:
+    description: "Has provided tag/version already been released"
+    value: ${{ steps.releases.outputs.tag }}
+
+runs:
+  using: "composite"
+  steps:
+    - name: "List GitHub Releases"
+      id: releases
+      shell: bash
+      run: |
+        # List GitHub Releases
+
+        # Check GitHub CLI is available
+        GH_CLI=$(which gh)
+        if [ ! -x "$GH_CLI" ]; then
+          echo "Error: GitHub CLI was NOT found in PATH ❌"
+          exit 1
+        fi
+
+        # Function to check releases
+        checkReleases() {
+          while IFS= read -r RELEASE ; do
+          if [ "$RELEASE" = "$TAG" ]; then
+            RELEASED="true"
+          fi
+          done <<< "$RELEASES"
+        }
+
+        # Case-insensitive matching of inputs
+        SUMMARY_OUTPUT=$(echo ${{ inputs.summary_output }} |\
+          tr '[:upper:]' '[:lower:]')
+        PRODUCTION_ONLY=$(echo ${{ inputs.PRODUCTION_ONLY }} |\
+          tr '[:upper:]' '[:lower:]')
+        RETURN_TYPE=$(echo ${{ inputs.return_type }} |\
+          tr '[:upper:]' '[:lower:]')
+        ORDER=$(echo ${{ inputs.order }} |\
+          tr '[:upper:]' '[:lower:]')
+        TAG="${{ inputs.tag }}"
+
+        # Set baseline flags for the CLI command
+        # Note: limit MUST be provided numerically to GH CLI
+        CLI_FLAGS="release list  --limit 1000 -O \
+          ${{ inputs.ORDER }} --limit 1000"
+
+        if [ "f$PRODUCTION_ONLY" = "ffalse" ]; then
+          CLI_FLAGS="$CLI_FLAGS --exclude-drafts --exclude-pre-releases"
+        fi
+
+        # Check dependent input parameters are coherent
+        if [ "$RETURN_TYPE" = "json" ] && [ -z "$JSON_FIELDS" ]; then
+          echo "Error: fields MUST be specified when return type is JSON ❌"
+          exit 1
+        elif [ "$RETURN_TYPE" = "json" ]; then
+          CLI_FLAGS="$CLI_FLAGS --json ${{ inputs.JSON_FIELDS }}"
+        fi
+
+        echo "Fetching GitHub Releases 📦"
+        if [ "f$SUMMARY_OUTPUT" = "ftrue" ]; then
+          echo "### 📦 GitHub List Releases" >> "$GITHUB_STEP_SUMMARY"
+        fi
+
+        # Run and capture GitHub CLI Command
+        if [ "$RETURN_TYPE" = "text" ]; then
+          # Text output is actually a JSON query processed with fixed arguments
+          echo "Running: $GH_CLI $CLI_FLAGS"
+          RELEASES=$($GH_CLI $CLI_FLAGS --json tagName -q '.[] | .tagName')
+        else
+          echo "Running: $GH_CLI $CLI_FLAGS"
+          RELEASES=$($GH_CLI $CLI_FLAGS)
+        fi
+
+        # Only list releases if/when values are returned
+        if [ -n "$RELEASES" ]; then
+          echo "Releases in this repository:"
+          echo "$RELEASES"
+        fi
+
+        if [ -z "$TAG" ]; then
+          # Exit early if no tag/version to check in releases
+          exit 0
+        fi
+
+        # Check with leading character in place
+        echo "Checking for: $TAG"
+        checkReleases
+
+        if [ "$RELEASED" != "true" ]; then
+          if [[ "$TAG" == v* ]]; then
+            TAG="${TAG:1}"
+            # Check again with leading 'v' character stripped
+            echo "Checking for: $TAG"
+            checkReleases
+          fi
+        fi
+
+        # Set output value
+        echo "RELEASED=$RELEASED" >> "$GITHUB_ENV"
+        echo "RELEASED=$RELEASED" >> "$GITHUB_OUTPUT"
+
+        if [ "$RELEASED" = "true" ]; then
+          echo "${{ inputs.tag }} HAS already been release ⚠️"
+        else
+          echo "${{ inputs.tag }} has not previously been released ✅"
+        fi
+        if [ "f$SUMMARY_OUTPUT" = "ftrue" ]; then
+          if [ "$RELEASED" = "true" ]; then
+            echo "Release already published: $TAG ⚠️" \
+              >> "$GITHUB_STEP_SUMMARY"
+          else
+            echo "Release not published yet: $TAG ✅" \
+              >> "$GITHUB_STEP_SUMMARY"
+          fi
+        fi