From 5b3f81b37184e192b6eb9c660110e27c0faa0d61 Mon Sep 17 00:00:00 2001
From: Shivam Mathur <shivam_jpr@hotmail.com>
Date: Wed, 22 Dec 2021 14:20:58 +0000
Subject: [PATCH] Cache phar for each PHP version and channel

---
 .github/workflows/cache.yml | 49 ++++++---------------
 cache.sh                    | 86 +++++++++++++++++++++++++++++++++++++
 2 files changed, 99 insertions(+), 36 deletions(-)
 create mode 100644 cache.sh

diff --git a/.github/workflows/cache.yml b/.github/workflows/cache.yml
index 54efc8f..1b66c9b 100644
--- a/.github/workflows/cache.yml
+++ b/.github/workflows/cache.yml
@@ -2,6 +2,15 @@ name: 'Cache'
 on:
   repository_dispatch:
   workflow_dispatch:
+    inputs:
+      force:        
+        type: choice
+        description: Update phars by force
+        options:
+        - true
+        - false
+        default: 'false'
+        required: false
   schedule:
     - cron: '0 * * * *'
 jobs:
@@ -9,41 +18,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
-    - name: Release
-      run: |
-        versions=$(curl -sSL https://getcomposer.org/versions)
-        release_versions=$(curl -sSL https://github.com/shivammathur/composer-cache/releases/latest/download/versions)
-        if [ "$versions" = "$release_versions" ]; then
-          echo "No new releases"
-        else
-          for v in stable preview snapshot 1 2; do
-            curl -o composer-$v.phar -sSL https://getcomposer.org$(echo $versions | jq -r ".\"$v\"[].path" | head -n 1)
-            php -r "try {\$p=new Phar('composer-$v.phar', 0);exit(0);} catch(Exception \$e) {exit(1);}"
-            if [ $? -eq 1 ]; then
-              echo "Could not download composer $v"
-              exit 1;
-            else
-              sudo cp ./composer-$v.phar /usr/local/bin/composer
-              sudo chmod a+x /usr/local/bin/composer
-              release=$(composer -V)
-              echo $release
-            fi
-          done
-          curl -o versions -sSL https://getcomposer.org/versions
-          set -x
-          assets=()
-          for asset in ./*.phar; do
-            assets+=("$asset")
-          done
-          assets+=("./versions")
-          echo "${assets[@]}"
-          if ! gh release view versions; then
-            gh release create "versions" "${assets[@]}"  -t "versions" -F ./versions
-          else
-            gh release upload "versions" "${assets[@]}" --clobber
-            endpoint=$(gh api repos/${{ github.repository }}/releases/tags/versions -H Accept:application/vnd.github.v3+json | jq -r '.url')
-            gh api "$endpoint" -H Accept:application/vnd.github.v3+json -H Content-Type:application/json -X PATCH -f body="$(cat ./versions)" --silent
-          fi
-        fi
+    - name: Cache
+      run: bash cache.sh
       env:
+        FORCE: ${{ github.event.inputs.force }}
+        GITHUB_REPOSITORY: ${{ github.repository }}
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/cache.sh b/cache.sh
new file mode 100644
index 0000000..931e8c1
--- /dev/null
+++ b/cache.sh
@@ -0,0 +1,86 @@
+#!/usr/bin/env bash
+
+check_phar() {
+    phar=$1
+    echo "Checking $phar"
+    php -r "try {\$p=new Phar('$phar', 0);exit(0);} catch(Exception \$e) {exit(1);}"
+    if [ $? -eq 1 ]; then
+        echo "ERROR: Broken $phar found"
+        exit 1
+    else
+        php "$phar" -V
+    fi
+}
+
+fetch_phar_for_php_version() {
+    php_version=$1
+    channel=$2
+    installer=$3
+    php_version_semver="$php_version.99"
+    php_version_id=$(echo "${php_version_semver}" | awk 'BEGIN { FS = "."; } { printf "%d", ($1 * 100 + $2) * 100 + $3;}')
+    cp -f "$installer" "$installer-${php_version}"
+    sed -i -e "s/PHP_VERSION_ID/'$php_version_id'/g" -e "s/PHP_VERSION/'$php_version_semver'/g" "$installer-${php_version}"
+    php "$installer-${php_version}" --"${channel}" --install-dir="$(pwd)" --filename=composer-"${php_version}"-"${channel}".phar
+    check_phar composer-"${php_version}"-"${channel}".phar    
+}
+
+fetch_installer() {
+    installer=$1
+    EXPECTED_CHECKSUM="$(curl -sL https://composer.github.io/installer.sig)"
+    curl -o "$installer" -sL https://getcomposer.org/installer
+    ACTUAL_CHECKSUM="$(openssl dgst -sha384 "$installer" | cut -d ' ' -f 2)"
+    if [ "$EXPECTED_CHECKSUM" != "$ACTUAL_CHECKSUM" ]; then
+        echo 'ERROR: Invalid installer checksum'
+        exit 1
+    fi
+}
+
+update_release() {
+    release=$1
+    release_notes_file=$2
+    assets=()
+    for asset in ./*.phar; do
+        assets+=("$asset")
+    done
+    assets+=("$release_notes_file")
+    echo "${assets[@]}"
+    if ! gh release view "$release"; then
+        gh release create "$release" "${assets[@]}"  -t "$release" -F "$release_notes_file"
+    else
+        gh release upload "$release" "${assets[@]}" --clobber
+        endpoint="$(gh api repos/"$GITHUB_REPOSITORY"/releases/tags/"$release" -H Accept:application/vnd.github.v3+json | jq -r '.url')"
+        gh api "$endpoint" -H Accept:application/vnd.github.v3+json -H Content-Type:application/json -X PATCH -f body="$(cat "$release_notes_file")" --silent
+    fi
+}
+
+check_manifest() {
+    manifest_file=$1
+    release=$2
+    curl -o "$manifest_file" -sSL https://getcomposer.org/versions
+    release_versions="$(curl -sSL https://github.com/"$GITHUB_REPOSITORY"/releases/latest/download/"$release")"
+    if [ "$FORCE" != 'true' ] && [ "$(cat "$manifest_file")" = "$release_versions" ]; then
+        echo "No new releases"
+        exit 0
+    fi
+}
+
+channels=(stable preview snapshot 1 2)
+php_versions=(5.3 5.4 5.5 5.6 7.0 7.1 7.2 7.3 7.4 8.0 8.1 8.2)
+release=versions
+manifest_file=versions
+installer=installer
+
+
+check_manifest "$manifest_file" "$release"
+
+for channel in "${channels[@]}"; do
+    curl -o composer-"$channel".phar -sSL https://getcomposer.org"$(jq -r ".\"$channel\"[].path" "$manifest_file" | head -n 1)"
+    check_phar composer-"$channel".phar
+
+    fetch_installer "$installer"
+    for php_version in "${php_versions[@]}"; do
+        fetch_phar_for_php_version "$php_version" "$channel" "$installer"
+    done
+done
+
+update_release "$release" "$manifest_file"