feat: add version input variable (#27)

* feat: add version input variable

Signed-off-by: Ludovic Ortega <ludovic.ortega@adminafk.fr>

* chore(docs): readme typo

Signed-off-by: Ludovic Ortega <ludovic.ortega@adminafk.fr>

* fix: use bash script file instead of raw script

* fix: variable interpolation

* fix: GITHUB_TOKEN bash variable interpolation

* fix: output version description

* fix: VERSION variable interpolation

* fix: add back "lastest" in version description

* fix: add suggested changes

Co-authored-by: Orhun Parmaksız <orhunparmaksiz@gmail.com>

* refactor: polish implementation

* chore: bump version

---------

Signed-off-by: Ludovic Ortega <ludovic.ortega@adminafk.fr>
Co-authored-by: Orhun Parmaksız <orhunparmaksiz@gmail.com>

.github/dependabot.yml

@@ -13,16 +13,3 @@ updates:
       patch:
         update-types:
           - "patch"
-  # Maintain dependencies for docker
-  - package-ecosystem: docker
-    directory: "/"
-    schedule:
-      interval: daily
-    open-pull-requests-limit: 10
-    groups:
-      minor:
-        update-types:
-          - "minor"
-      patch:
-        update-types:
-          - "patch"

README.md

@@ -6,6 +6,7 @@ This action generates a changelog based on your Git history using [git-cliff](ht
 
 ### Input variables
 
+- `version`: `git-cliff` version to use (Default: `"latest"`)
 - `config`: Path of the configuration file. (Default: `"cliff.toml"`)
 - `args`: [Arguments](https://github.com/orhun/git-cliff#usage) to pass to git-cliff. (Default: `"-v"`)
 
@@ -49,9 +50,10 @@ jobs:
           fetch-depth: 0
 
       - name: Generate a changelog
-        uses: orhun/git-cliff-action@v3
+        uses: orhun/git-cliff-action@v4
         id: git-cliff
         with:
+          version: latest
           config: cliff.toml
           args: --verbose
         env:
@@ -81,7 +83,7 @@ jobs:
           fetch-depth: 0
 
       - name: Generate a changelog
-        uses: orhun/git-cliff-action@v3
+        uses: orhun/git-cliff-action@v4
         id: git-cliff
         with:
           config: cliff.toml
@@ -130,7 +132,7 @@ jobs:
           fetch-depth: 0
 
       - name: Generate a changelog
-        uses: orhun/git-cliff-action@v3
+        uses: orhun/git-cliff-action@v4
         with:
           config: cliff.toml
           args: --verbose

action.yml

@@ -1,6 +1,10 @@
 name: "git-cliff - Changelog Generator"
 description: "Generate changelog based on your Git history"
 inputs:
+  version:
+    description: "git-cliff version"
+    required: false
+    default: "latest"
   config:
     description: "config file location"
     required: false
@@ -12,16 +16,30 @@ inputs:
 outputs:
   changelog:
     description: "output file"
+    value: ${{ steps.run-git-cliff.outputs.changelog }}
   content:
     description: "content of the changelog"
+    value: ${{ steps.run-git-cliff.outputs.content }}
   version:
     description: "version of the latest release"
+    value: ${{ steps.run-git-cliff.outputs.version }}
 runs:
-  using: "docker"
-  image: "Dockerfile"
-  args:
-    - --config=${{ inputs.config }}
-    - ${{ inputs.args }}
+  using: "composite"
+  steps:
+    - name: Download git-cliff
+      shell: bash
+      run: ${{ github.action_path }}/install.sh
+      env:
+        RUNNER_OS: ${{ runner.os }}
+        RUNNER_ARCH: ${{ runner.arch }}
+        VERSION: ${{ inputs.version }}
+        GITHUB_TOKEN: ${{ github.token }}
+
+    - name: Run git-cliff
+      id: run-git-cliff
+      shell: bash
+      run: ${{ github.action_path }}/run.sh --config=${{ inputs.config }} ${{ inputs.args }}
+
 branding:
   icon: "triangle"
   color: "green"

install.sh

@@ -0,0 +1,41 @@
+#!/bin/bash
+
+set -uxo pipefail
+
+case "${RUNNER_OS}" in
+    macOS)   OS=apple-darwin ;;
+    Windows) OS=pc-windows-msvc ;;
+    *)       OS=unknown-linux-gnu ;;
+esac
+case "${RUNNER_ARCH}" in
+    ARM64) ARCH=aarch64 ;;
+    ARM)   ARCH=pc-windows-msvc ;;
+    X86)   ARCH=i686 ;;
+    *)     ARCH=x86_64 ;;
+esac
+
+RELEASE_URL='https://api.github.com/repos/orhun/git-cliff/releases/latest'
+if [[ "${VERSION}" != 'latest' ]]; then
+    RELEASE_URL="https://api.github.com/repos/orhun/git-cliff/releases/tags/${VERSION}"
+fi
+
+# Although releases endpoint is available without authentication, the current github.token is still passed
+# in order to increase the limit of 60 requests per hour per IP address to a higher value that's also counted
+# per GitHub account.
+# Caching is disabled in order not to receive stale responses from Varnish cache fronting GitHub API.
+RELEASE_INFO="$(curl --silent --show-error --fail \
+    --header "authorization: Bearer ${GITHUB_TOKEN}" \
+    --header 'Cache-Control: no-cache, must-revalidate' \
+    "${RELEASE_URL}")"
+TAG_NAME="$(echo "${RELEASE_INFO}" | jq --raw-output ".tag_name")"
+TARGET="git-cliff-${TAG_NAME:1}-${ARCH}-${OS}.tar.gz"
+LOCATION="$(echo "${RELEASE_INFO}" \
+    | jq --raw-output ".assets[].browser_download_url" \
+    | grep "${TARGET}$")"
+
+# Skip downloading release if downloaded already, e.g. when the action is used multiple times.
+if [[ ! -e "$TARGET" ]]; then
+    curl --silent --show-error --fail --location --output "$TARGET" "$LOCATION"
+    tar -xf "$TARGET"
+    mv git-cliff-${TAG_NAME:1}/git-cliff .
+fi

entrypoint.sh → run.sh

@@ -1,4 +1,5 @@
-#!/bin/bash -l
+#!/bin/bash
+
 set -uxo pipefail
 
 # Avoid file expansion when passing parameters like with '*'
@@ -16,12 +17,12 @@ mkdir -p "$(dirname $OUTPUT)"
 args=$(echo "$@" | xargs)
 
 # Execute git-cliff
-GIT_CLIFF_OUTPUT="$OUTPUT" git-cliff $args
+GIT_CLIFF_OUTPUT="$OUTPUT" ./git-cliff $args
 exit_code=$?
 
 # Retrieve context
 CONTEXT="$(mktemp)"
-GIT_CLIFF_OUTPUT="$CONTEXT" git-cliff $args --context
+GIT_CLIFF_OUTPUT="$CONTEXT" ./git-cliff $args --context
 
 # Output to console
 cat "$OUTPUT"
@@ -41,4 +42,4 @@ echo "changelog=$OUTPUT" >>$GITHUB_OUTPUT
 echo "version=$(jq -r '.[0].version' $CONTEXT)" >>$GITHUB_OUTPUT
 
 # Pass exit code to the next step
-echo "exit_code=$exit_code" >>$GITHUB_OUTPUT
+echo "exit_code=$exit_code" >>$GITHUB_OUTPUT