print version

* Update for testing any-version on any-channel

* Update `latest_version` and Add `latest_channel_version`

.github/FUNDING.yml

@@ -1 +0,0 @@
-open_collective: flutter-action

.github/workflows/workflow.yml

@@ -4,98 +4,110 @@ on:
     branches:
       - main
   pull_request:
-    branches:
-      - main
+    paths:
+      - setup.sh
+      - action.yml
 jobs:
+  lint_shellcheck:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: ludeeus/action-shellcheck@master
   test_channel:
     runs-on: ${{ matrix.operating-system }}
     strategy:
       matrix:
         operating-system: [ubuntu-latest, windows-latest, macos-latest]
-        channel: [stable, beta]
+        channel: [stable, beta, master]
     steps:
-    - name: Checkout
-      uses: actions/checkout@v3
+    - uses: actions/checkout@v3
     - uses: ./
       with:
         channel: ${{ matrix.channel }}
-    - name: Print FLUTTER_ROOT
+    - run: dart --version
       shell: bash
-      run: echo "FLUTTER_ROOT set to $FLUTTER_ROOT"
-    - name: Print PUB_CACHE
+    - run: flutter --version
       shell: bash
-      run: echo "PUB_CACHE set to $PUB_CACHE"
-    - name: Run dart --version
-      shell: bash
-      run: dart --version
-    - name: Run flutter --version
-      shell: bash
-      run: flutter --version
-  test_version:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        version: [ 2.5.3, 2.x, 1, v1.12 ]
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v3
-    - uses: ./
-      with:
-        channel: stable
-        flutter-version: ${{ matrix.version }}
-    - name: Run dart --version
-      shell: bash
-      run: dart --version
-    - name: Run flutter --version
-      shell: bash
-      run: flutter --version
-  test_master_channel:
-    runs-on: windows-latest
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v3
-    - uses: ./
-      with:
-        channel: master
-    - name: Run dart --version
-      shell: bash
-      run: dart --version
-    - name: Run flutter --version
-      shell: bash
-      run: flutter --version
-  test_any_channel:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v3
-    - uses: ./
-      with:
-        channel: any
-        flutter-version: 2
-    - name: Run dart --version
-      shell: bash
-      run: dart --version
-    - name: Run flutter --version
-      shell: bash
-      run: flutter --version
   test_cache:
     runs-on: ${{ matrix.operating-system }}
     strategy:
       matrix:
         operating-system: [ubuntu-latest, windows-latest, macos-latest]
     steps:
-    - name: Checkout
-      uses: actions/checkout@v3
+    - uses: actions/checkout@v3
     - uses: ./
       with:
         channel: stable
-        flutter-version: 2.5.0
         cache: true
-        cache-key: key-20220113
-        cache-path: ${{ runner.tool_cache }}/flutter/2.5.0-stable
-    - name: Run dart --version
+    - run: dart --version
       shell: bash
-      run: dart --version
-    - name: Run flutter --version
+    - run: flutter --version
+      shell: bash
+  test_version:
+    runs-on: macos-latest
+    steps:
+    - uses: actions/checkout@v3
+    - run: ./setup.sh -p version                    | grep -x 'stable:any:x64|stable:3.0.5:x64'
+      shell: bash
+    - run: ./setup.sh -p version stable             | grep -x 'stable:any:x64|stable:3.0.5:x64'
+      shell: bash
+    - run: ./setup.sh -p version beta               | grep -x 'beta:any:x64|beta:3.1.0-9.0.pre:x64'
+      shell: bash
+    - run: ./setup.sh -p version master             | grep -x 'master:master:x64|master:master:x64'
+      shell: bash
+    - run: ./setup.sh -p version stable 2           | grep -x 'stable:2:x64|stable:2.10.5:x64'
+      shell: bash
+    - run: ./setup.sh -p version beta 2             | grep -x 'beta:2:x64|beta:2.13.0-0.4.pre:x64'
+      shell: bash
+    - run: ./setup.sh -p version any 2              | grep -x 'any:2:x64|beta:2.13.0-0.4.pre:x64'
+      shell: bash
+    - run: ./setup.sh -p version any 3              | grep -x 'any:3:x64|stable:3.0.5:x64'
+      shell: bash
+    - run: ./setup.sh -p version any 3 arm64        | grep -x 'any:3:arm64|stable:3.0.5:arm64'
+      shell: bash
+    - run: ./setup.sh -p version stable any arm64   | grep -x 'stable:any:arm64|stable:3.0.5:arm64'
+      shell: bash
+    - run: ./setup.sh -p version stable 1           | grep -x 'stable:1:x64|stable:1.22.6:x64'
+      shell: bash
+    - run: ./setup.sh -p version stable v1          | grep -x 'stable:v1:x64|stable:v1.12.13+hotfix.9:x64'
+      shell: bash
+    - run: ./setup.sh -p version any 0              | grep -x 'any:0:x64|beta:v0.11.13:x64'
+      shell: bash
+    - run: ./setup.sh -p version any v0             | grep -x 'any:v0:x64|beta:v0.11.13:x64'
+      shell: bash
+  test_cache_key:
+    runs-on: macos-latest
+    steps:
+    - uses: actions/checkout@v3
+    - run: ./setup.sh -p cache-key                  | grep -x 'flutter-macos-x64-stable-3.0.5-f1875d570e39de09040c8f79aa13cc56baab8db1'
+      shell: bash
+    - run: ./setup.sh -p cache-key stable           | grep -x 'flutter-macos-x64-stable-3.0.5-f1875d570e39de09040c8f79aa13cc56baab8db1'
+      shell: bash
+    - run: ./setup.sh -p cache-key beta             | grep -x 'flutter-macos-x64-beta-3.1.0-9.0.pre-f28e570c8cb12a004fae2d796d0d9cd46603bde9'
+      shell: bash
+    - run: ./setup.sh -p cache-key master           | grep -x 'flutter-macos-x64-master-master-master'
+      shell: bash
+    - run: ./setup.sh -p cache-key stable 2         | grep -x 'flutter-macos-x64-stable-2.10.5-5464c5bac742001448fe4fc0597be939379f88ea'
+      shell: bash
+    - run: ./setup.sh -p cache-key beta 2           | grep -x 'flutter-macos-x64-beta-2.13.0-0.4.pre-25caf1461b8f643092a9f6f5b224453b5c057d10'
+      shell: bash
+    - run: ./setup.sh -p cache-key any 2            | grep -x 'flutter-macos-x64-beta-2.13.0-0.4.pre-25caf1461b8f643092a9f6f5b224453b5c057d10'
+      shell: bash
+    - run: ./setup.sh -p cache-key any 3            | grep -x 'flutter-macos-x64-stable-3.0.5-f1875d570e39de09040c8f79aa13cc56baab8db1'
+      shell: bash
+    - run: ./setup.sh -p cache-key any 3 arm64      | grep -x 'flutter-macos-arm64-stable-3.0.5-f1875d570e39de09040c8f79aa13cc56baab8db1'
+      shell: bash
+    - run: ./setup.sh -p cache-key stable any arm64 | grep -x 'flutter-macos-arm64-stable-3.0.5-f1875d570e39de09040c8f79aa13cc56baab8db1'
+      shell: bash
+    - run: ./setup.sh -p cache-key stable 1         | grep -x 'flutter-macos-x64-stable-1.22.6-9b2d32b605630f28625709ebd9d78ab3016b2bf6'
+      shell: bash
+    - run: ./setup.sh -p cache-key stable v1        | grep -x 'flutter-macos-x64-stable-v1.12.13+hotfix.9-f139b11009aeb8ed2a3a3aa8b0066e482709dde3'
+      shell: bash
+    - run: ./setup.sh -p cache-key any 0            | grep -x 'flutter-macos-x64-beta-v0.11.13-58c8489fcdb4e4ef6c010117584c9b23d15221aa'
+      shell: bash
+    - run: ./setup.sh -p cache-key any v0           | grep -x 'flutter-macos-x64-beta-v0.11.13-58c8489fcdb4e4ef6c010117584c9b23d15221aa'
+      shell: bash
+    - run: ./setup.sh -p cache-key -k 'custom-:channel:-:version:-:hash:'   | grep -x 'custom-stable-3.0.5-f1875d570e39de09040c8f79aa13cc56baab8db1'
+      shell: bash
+    - run: ./setup.sh -p cache-key -k 'custom-:channel:-:version:-:sha256:' | grep -x 'custom-stable-3.0.5-e79a04dcfd1b583e5831433fc200800ba0d1e9fe4567cb661479bd2542d4c685'
       shell: bash
-      run: flutter --version

README.md

@@ -11,7 +11,7 @@ steps:
 - uses: actions/checkout@v3
 - uses: subosito/flutter-action@v2
   with:
-    flutter-version: '2.8.0'
+    flutter-version: '3.0.5'
     channel: 'stable'
 - run: flutter --version
 ```
@@ -62,7 +62,7 @@ steps:
     java-version: '11'
 - uses: subosito/flutter-action@v2
   with:
-    flutter-version: '2.10.4'
+    flutter-version: '3.0.5'
 - run: flutter pub get
 - run: flutter test
 - run: flutter build apk
@@ -79,7 +79,7 @@ jobs:
     - uses: actions/checkout@v3
     - uses: subosito/flutter-action@v2
       with:
-        flutter-version: '2.10.4'
+        channel: 'stable'
         architecture: x64
     - run: flutter pub get
     - run: flutter test
@@ -93,7 +93,7 @@ steps:
 - uses: actions/checkout@v3
 - uses: subosito/flutter-action@v2
   with:
-    flutter-version: '2.10.4'
+    channel: 'stable'
 - run: flutter pub get
 - run: flutter test
 - run: flutter build web
@@ -124,7 +124,7 @@ jobs:
      - uses: actions/checkout@v3
      - uses: subosito/flutter-action@v2
        with:
-         channel: 'beta'
+         channel: 'stable'
      - run: |
         sudo apt-get update -y
         sudo apt-get install -y ninja-build libgtk-3-dev
@@ -142,7 +142,7 @@ jobs:
      - uses: actions/checkout@v3
      - uses: subosito/flutter-action@v2
        with:
-         channel: 'beta'
+         channel: 'stable'
          architecture: x64
      - run: flutter config --enable-macos-desktop
      - run: flutter build macos
@@ -155,11 +155,19 @@ steps:
 - uses: actions/checkout@v3
 - uses: subosito/flutter-action@v2
   with:
-    flutter-version: '2.10.x'
     channel: 'stable'
     cache: true
-    cache-key: flutter # optional, change this to force refresh cache
+    cache-key: 'flutter-:os:-:arch:-:channel:-:version:-:hash:' # optional, change this to force refresh cache
     cache-path: ${{ runner.tool_cache }}/flutter # optional, change this to specify the cache path
     architecture: x64 # optional, x64 or arm64
 - run: flutter --version
 ```
+
+Note: `cache-key` has support for several dynamic values:
+
+- `:os:`
+- `:arch:`
+- `:channel:`
+- `:version:`
+- `:hash:`
+- `:sha256:`

action.yml

@@ -19,7 +19,7 @@ inputs:
   cache-key:
     description: 'Identifier for the Flutter SDK cache'
     required: false
-    default: 'flutter'
+    default: 'flutter-:os:-:arch:-:channel:-:version:-:hash:'
   cache-path:
     description: 'Flutter SDK cache path'
     required: false
@@ -27,14 +27,18 @@ inputs:
   architecture:
     description: 'The architecture of Flutter SDK executable (x64 or arm64)'
     required: false
-    default: 'x64'
+    default: ${{ runner.arch }}
 runs:
   using: 'composite'
   steps:
     - if: ${{ inputs.cache == 'true' }}
-      uses: actions/cache@v2
+      id: flutter-action-cache-key-builder
+      run: echo "::set-output name=cache-key::$($GITHUB_ACTION_PATH/setup.sh -p cache-key -k ${{ inputs.cache-key }} ${{ inputs.channel }} ${{ inputs.flutter-version }} ${{ inputs.architecture }})"
+      shell: bash
+    - if: ${{ inputs.cache == 'true' }}
+      uses: actions/cache@v3
       with:
         path: ${{ inputs.cache-path }}
-        key: ${{ inputs.cache-key }}-${{ inputs.channel }}-${{ inputs.flutter-version }}
+        key: ${{ steps.flutter-action-cache-key-builder.outputs.cache-key }}
     - run: $GITHUB_ACTION_PATH/setup.sh -c "${{ inputs.cache-path }}" ${{ inputs.channel }} ${{ inputs.flutter-version }} ${{ inputs.architecture }}
       shell: bash

setup.sh

@@ -1,122 +1,233 @@
 #!/bin/bash
 
+check_command() {
+	command -v "$1" >/dev/null 2>&1
+}
+
+if ! check_command jq; then
+	echo "jq not found, please install it, https://stedolan.github.io/jq/download/"
+	exit 1
+fi
+
 OS_NAME=$(echo "$RUNNER_OS" | awk '{print tolower($0)}')
 MANIFEST_BASE_URL="https://storage.googleapis.com/flutter_infra_release/releases"
-MANIFEST_URL="${MANIFEST_BASE_URL}/releases_${OS_NAME}.json"
+MANIFEST_URL="$MANIFEST_BASE_URL/releases_$OS_NAME.json"
+MANIFEST_TEST_FIXTURE="test/releases_$OS_NAME.json"
 
-# convert version like 2.5.x to 2.5
-normalize_version() {
-  if [[ $1 == *x ]]; then
-    echo ${1::-2}
-  else
-    echo $1
-  fi
-}
-
-latest_version() {
-  jq --arg channel "$1" --arg arch "$ARCH" '.releases | map(select(.channel==$channel) | select(.dart_sdk_arch == null or .dart_sdk_arch == $arch)) | first'
+legacy_wildcard_version() {
+	if [[ $1 == any ]]; then
+		jq --arg version "$2" '.releases | map(select(.version | startswith($version) )) | first'
+	else
+		jq --arg channel "$1" --arg version "$2" '.releases | map(select(.channel==$channel) | select(.version | startswith($version) )) | first'
+	fi
 }
 
 wildcard_version() {
-  if [ $2 == *"v"* ]; then  # is legacy version format
-    if [[ $1 == any ]]; then
-    jq --arg version "$2" '.releases | map(select(.version | startswith($version) )) | first'
-    else
-    jq --arg channel "$1" --arg version "$2" '.releases | map(select(.channel==$channel) | select(.version | startswith($version) )) | first'
-    fi
-  elif [[ $1 == any ]]; then
-    jq --arg version "$2" --arg arch "$ARCH" '.releases | map(select(.version | startswith($version)) | select(.dart_sdk_arch == null or .dart_sdk_arch == $arch)) | first'    
-  else
-    jq --arg channel "$1" --arg version "$2" --arg arch "$ARCH" '.releases | map(select(.channel==$channel) | select(.version | startswith($version) ) | select(.dart_sdk_arch == null or .dart_sdk_arch == $arch)) | first'
-  fi
+	if [[ $1 == any ]]; then
+		jq --arg version "$2" --arg arch "$3" '.releases | map(select(.version | startswith($version)) | select(.dart_sdk_arch == null or .dart_sdk_arch == $arch)) | first'
+	else
+		jq --arg channel "$1" --arg version "$2" --arg arch "$3" '.releases | map(select(.channel==$channel) | select(.version | startswith($version) ) | select(.dart_sdk_arch == null or .dart_sdk_arch == $arch)) | first'
+	fi
 }
 
 get_version() {
-  if [[ $2 == any ]]; then
-    latest_version $1
-  else
-    wildcard_version $1 $2
-  fi
+	if [[ "$1" == any && "$2" == any ]]; then # latest_version
+		jq --arg arch "$3" '.releases | map(select(.dart_sdk_arch == null or .dart_sdk_arch == $arch)) | first'
+	elif [[ "$2" == any ]]; then # latest channel version
+		jq --arg channel "$1" --arg arch "$3" '.releases | map(select(.channel==$channel) | select(.dart_sdk_arch == null or .dart_sdk_arch == $arch)) | first'
+	else
+		wildcard_version "$1" "$2" "$3"
+	fi
 }
 
-get_version_manifest() {
-  releases_manifest=$(curl --silent --connect-timeout 15 --retry 5 $MANIFEST_URL)
-  version_manifest=$(echo $releases_manifest | get_version $1 $(normalize_version $2))
-
-  if [[ $version_manifest == null ]]; then
-    # fallback through legacy version format
-    echo $releases_manifest | wildcard_version $1 "v$(normalize_version $2)"
-  else
-    echo $version_manifest
-  fi
+normalize_version() {
+	if [[ "$1" == *.x ]]; then
+		echo "${1/.x/}"
+	else
+		echo "$1"
+	fi
 }
 
-download_archive() {
-  archive_url="$MANIFEST_BASE_URL/$1"
-  archive_name=$(basename $1)
-  archive_local="$RUNNER_TEMP/$archive_name"
-
-  curl --connect-timeout 15 --retry 5 $archive_url >$archive_local
-
-  # Create the target folder
-  mkdir -p "$2"
-
-  if [[ $archive_name == *zip ]]; then
-    unzip -q -o "$archive_local" -d "$RUNNER_TEMP"
-    # Remove the folder again so that the move command can do a simple rename
-    # instead of moving the content into the target folder.
-    # This is a little bit of a hack since the "mv --no-target-directory"
-    # linux option is not available here
-    rm -r "$2"
-    mv ${RUNNER_TEMP}/flutter "$2"
-  else
-    tar xf "$archive_local" -C "$2" --strip-components=1
-  fi
-
-  rm $archive_local
+not_found_error() {
+	echo "Unable to determine Flutter version for channel: $1 version: $2 architecture: $3"
 }
 
 transform_path() {
-  if [[ $OS_NAME == windows ]]; then
-    echo $1 | sed -e 's/^\///' -e 's/\//\\/g'
-  else
-    echo $1
-  fi
+	if [[ "$OS_NAME" == windows ]]; then
+		echo "$1" | sed -e 's/^\///' -e 's/\//\\/g'
+	else
+		echo "$1"
+	fi
+}
+
+download_archive() {
+	archive_url="$MANIFEST_BASE_URL/$1"
+	archive_name=$(basename "$1")
+	archive_local="$RUNNER_TEMP/$archive_name"
+
+	curl --connect-timeout 15 --retry 5 "$archive_url" >"$archive_local"
+
+	# Create the target folder
+	mkdir -p "$2"
+
+	if [[ "$archive_name" == *zip ]]; then
+		unzip -q -o "$archive_local" -d "$RUNNER_TEMP"
+		# Remove the folder again so that the move command can do a simple rename
+		# instead of moving the content into the target folder.
+		# This is a little bit of a hack since the "mv --no-target-directory"
+		# linux option is not available here
+		rm -r "$2"
+		mv "$RUNNER_TEMP"/flutter "$2"
+	else
+		tar xf "$archive_local" -C "$2" --strip-components=1
+	fi
+
+	rm "$archive_local"
 }
 
 CACHE_PATH=""
+CACHE_KEY=""
+PRINT_MODE=""
 
-while getopts 'c:' flag; do
-  case "${flag}" in
-  c) CACHE_PATH="$OPTARG" ;;
-  ?) exit 2 ;;
-  esac
+while getopts 'c:k:p:' flag; do
+	case "$flag" in
+	c) CACHE_PATH="$OPTARG" ;;
+	k) CACHE_KEY="$OPTARG" ;;
+	p) PRINT_MODE="$OPTARG" ;;
+	?) exit 2 ;;
+	esac
 done
 
-CHANNEL="${@:$OPTIND:1}"
-VERSION="${@:$OPTIND+1:1}"
-ARCH="${@:$OPTIND+2:1}"
+ARR_CHANNEL=("${@:$OPTIND:1}")
+ARR_VERSION=("${@:$OPTIND+1:1}")
+ARR_ARCH=("${@:$OPTIND+2:1}")
 
-SDK_CACHE="$(transform_path ${CACHE_PATH})"
-PUB_CACHE="$(transform_path ${CACHE_PATH}/.pub-cache)"
+CHANNEL="${ARR_CHANNEL[0]}"
+VERSION="${ARR_VERSION[0]}"
+ARCH=$(echo "${ARR_ARCH[0]}" | awk '{print tolower($0)}')
 
-if [[ ! -x "${SDK_CACHE}/bin/flutter" ]]; then
-  if [[ $CHANNEL == master ]]; then
-    git clone -b master https://github.com/flutter/flutter.git "$SDK_CACHE"
-  else
-    VERSION_MANIFEST=$(get_version_manifest $CHANNEL $VERSION)
-    if [[ $VERSION_MANIFEST == null ]]; then
-      echo "Unable to determine Flutter version for channel: $CHANNEL version: $VERSION architecture: $ARCH"
-      exit 1
-     fi
-    ARCHIVE_PATH=$(echo $VERSION_MANIFEST | jq -r '.archive')
-    download_archive "$ARCHIVE_PATH" "$SDK_CACHE"
-  fi
+[[ -z $CHANNEL ]] && CHANNEL=stable
+[[ -z $VERSION ]] && VERSION=any
+[[ -z $ARCH ]] && ARCH=x64
+[[ -z $CACHE_PATH ]] && CACHE_PATH=/tmp
+[[ -z $CACHE_KEY ]] && CACHE_KEY="flutter-:os:-:arch:-:channel:-:version:-:hash:"
+
+RELEASE_MANIFEST=""
+VERSION_MANIFEST=""
+
+get_version_manifest() {
+	version_normalized=$(normalize_version "$VERSION")
+	version_manifest=$(echo "$RELEASE_MANIFEST" | get_version "$CHANNEL" "$version_normalized" "$ARCH")
+
+	if [[ "$version_manifest" == null ]]; then
+		version_manifest=$(echo "$RELEASE_MANIFEST" | legacy_wildcard_version "$CHANNEL" "v$version_normalized")
+	fi
+
+	version_arch=$(echo "$version_manifest" | jq -r '.dart_sdk_arch')
+
+	if [[ "$version_arch" == null ]]; then
+		if [[ "$ARCH" == x64 ]]; then
+			echo "$version_manifest" | jq --arg dart_sdk_arch x64 '.+={dart_sdk_arch:$dart_sdk_arch}'
+		else
+			echo ""
+		fi
+	else
+		echo "$version_manifest"
+	fi
+}
+
+expand_key() {
+	version_channel=$(echo "$VERSION_MANIFEST" | jq -r '.channel')
+	version_version=$(echo "$VERSION_MANIFEST" | jq -r '.version')
+	version_arch=$(echo "$VERSION_MANIFEST" | jq -r '.dart_sdk_arch')
+	version_hash=$(echo "$VERSION_MANIFEST" | jq -r '.hash')
+	version_sha_256=$(echo "$VERSION_MANIFEST" | jq -r '.sha256')
+
+	expanded_key="${1/:channel:/$version_channel}"
+	expanded_key="${expanded_key/:version:/$version_version}"
+	expanded_key="${expanded_key/:arch:/$version_arch}"
+	expanded_key="${expanded_key/:hash:/$version_hash}"
+	expanded_key="${expanded_key/:sha256:/$version_sha_256}"
+	expanded_key="${expanded_key/:os:/$OS_NAME}"
+
+	echo "$expanded_key"
+}
+
+print_version() {
+	version_debug=$(echo "$VERSION_MANIFEST" | jq -j '.channel,":",.version,":",.dart_sdk_arch')
+	echo "$CHANNEL:$VERSION:$ARCH|$version_debug"
+}
+
+if [[ -n "$PRINT_MODE" ]]; then
+	if [[ "$CHANNEL" == master ]]; then
+		if [[ "$PRINT_MODE" == version ]]; then
+			echo "master:master:$ARCH|master:master:$ARCH"
+			exit 0
+		fi
+
+		if [[ "$PRINT_MODE" == cache-key ]]; then
+			VERSION_MANIFEST="{\"channel\":\"$CHANNEL\",\"version\":\"$CHANNEL\",\"dart_sdk_arch\":\"$ARCH\",\"hash\":\"$CHANNEL\",\"sha256\":\"$CHANNEL\"}"
+			EXPANDED_KEY=$(expand_key "$CACHE_KEY")
+
+			echo "$EXPANDED_KEY"
+			exit 0
+		fi
+
+		exit 1
+	fi
+
+	RELEASE_MANIFEST=$(cat "$MANIFEST_TEST_FIXTURE")
+	VERSION_MANIFEST=$(get_version_manifest)
+
+	if [[ -z "$VERSION_MANIFEST" ]]; then
+		not_found_error "$CHANNEL" "$VERSION" "$ARCH"
+		exit 1
+	fi
+
+	if [[ "$PRINT_MODE" == version ]]; then
+		print_version
+		exit 0
+	fi
+
+	if [[ "$PRINT_MODE" == cache-key ]]; then
+		EXPANDED_KEY=$(expand_key "$CACHE_KEY")
+
+		echo "$EXPANDED_KEY"
+		exit 0
+	fi
+
+	exit 1
 fi
 
-echo "FLUTTER_ROOT=${SDK_CACHE}" >>$GITHUB_ENV
-echo "PUB_CACHE=${PUB_CACHE}" >>$GITHUB_ENV
+CACHE_PATH=$(transform_path "$CACHE_PATH")
+SDK_CACHE=$(expand_key "$CACHE_PATH")
+PUB_CACHE=$(expand_key "$SDK_CACHE/.pub-cache")
 
-echo "${SDK_CACHE}/bin" >>$GITHUB_PATH
-echo "${SDK_CACHE}/bin/cache/dart-sdk/bin" >>$GITHUB_PATH
-echo "${PUB_CACHE}/bin" >>$GITHUB_PATH
+if [[ ! -x "$SDK_CACHE/bin/flutter" ]]; then
+	if [[ $CHANNEL == master ]]; then
+		git clone -b master https://github.com/flutter/flutter.git "$SDK_CACHE"
+	else
+		RELEASE_MANIFEST=$(curl --silent --connect-timeout 15 --retry 5 "$MANIFEST_URL")
+		VERSION_MANIFEST=$(get_version_manifest)
+
+		if [[ -z "$VERSION_MANIFEST" ]]; then
+			not_found_error "$CHANNEL" "$VERSION" "$ARCH"
+			exit 1
+		fi
+
+		ARCHIVE_PATH=$(echo "$VERSION_MANIFEST" | jq -r '.archive')
+		download_archive "$ARCHIVE_PATH" "$SDK_CACHE"
+		print_version
+	fi
+fi
+
+{
+	echo "FLUTTER_ROOT=$SDK_CACHE"
+	echo "PUB_CACHE=$PUB_CACHE"
+} >>"$GITHUB_ENV"
+
+{
+	echo "$SDK_CACHE/bin"
+	echo "$SDK_CACHE/bin/cache/dart-sdk/bin"
+	echo "$PUB_CACHE/bin"
+} >>"$GITHUB_PATH"