CI: Use single packaging job, add changelog support

.github/workflows/vcpkg_ci.yml

@@ -1,12 +1,20 @@
 name: VCPKG Continuous Integration
+
 on:
+  # Run this workflow once every 6 hours against the master branch
+  schedule:
+   - cron: "0 */6 * * *"
+
   push:
     branches:
-      - master
+      - 'master'
+
+    tags:
+      - '*'
+
   pull_request:
-  schedule:
-    # run CI every day even if no PRs/merges occur
-    - cron:  '0 6 * * *'
+    branches:
+      - '*'
 
 jobs:
   build_linux:
@@ -129,13 +137,25 @@ jobs:
           path: ${{ steps.package_names.outputs.TGZ_PACKAGE_PATH }}
 
 
-  release_linux:
+  release_packages:
     # Do not run the release procedure if any of the builds has failed
     needs: [ build_linux, build_mac ]
     runs-on: ubuntu-20.04
     if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags')
 
     steps:
+      - name: Clone the rellic repository
+        uses: actions/checkout@v2
+        with:
+          path: rellic
+          fetch-depth: 0
+
+      - name: Generate the changelog
+        shell: bash
+        working-directory: rellic
+        run: |
+          ./scripts/generate_changelog.sh changelog.md
+
       - name: Download all artifacts
         uses: actions/download-artifact@v2
 
@@ -149,6 +169,7 @@ jobs:
         with:
           tag_name: ${{ github.ref }}
           release_name: Version ${{ github.ref }}
+          body_path: rellic/changelog.md
           draft: true
           prerelease: true
 
@@ -160,6 +181,9 @@ jobs:
           zip -r9 rellic_ubuntu-20.04_packages.zip \
                   ubuntu-20.04*
 
+          zip -r9 rellic_macos-10.15_packages.zip \
+                  macos-10.15*
+
       - name: Upload the Ubuntu 18.04 packages
         uses: actions/upload-release-asset@v1
 
@@ -184,37 +208,6 @@ jobs:
           asset_name: rellic_ubuntu-20.04_packages.zip
           asset_content_type: application/gzip
 
-
-
-
-  release_macos:
-    # Do not run the release procedure if any of the builds has failed
-    needs: [ build_linux, build_mac ]
-    runs-on: 'macos-10.15'
-    if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags')
-
-    steps:
-      - name: Download all artifacts
-        uses: actions/download-artifact@v2
-
-      - name: Draft the new release
-        id: create_release
-        uses: actions/create-release@v1
-
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-        with:
-          tag_name: ${{ github.ref }}
-          release_name: Version ${{ github.ref }}
-          draft: true
-          prerelease: true
-
-      - name: Group the packages by platform
-        run: |
-          zip -r9 rellic_macos-10.15_packages.zip \
-                  macos-10.15*
-
       - name: Upload the macOS 10.15 packages
         uses: actions/upload-release-asset@v1
 

scripts/generate_changelog.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+
+PROJECT_NAME="rellic"
+
+main() {
+  if [[ $# != 1 ]] ; then
+    printf "Usage:\n\tgenerate_changelog.sh <path/to/changelog/file.md>\n"
+    return 1
+  fi
+
+  local output_path="${1}"
+  local current_version="$(git describe --tags --always)"
+  local previous_version="$(git describe --tags --always --abbrev=0 ${current_version}^)"
+
+  echo "Current version: ${current_version}"
+  echo "Previous version: ${previous_version}"
+  echo "Output file: ${output_path}"
+
+  printf "# Changelog\n\n" > "${output_path}"
+  printf "The following are the changes that happened between versions ${previous_version} and ${current_version}\n\n" >> "${output_path}"
+
+  git log ${previous_version}...${current_version} \
+    --pretty=format:" * [%h](http://github.com/lifting-bits/${PROJECT_NAME}/commit/%H) - %s" \
+    --reverse | grep -v 'Merge branch' >> "${output_path}"
+
+  return 0
+}
+
+main $@
+exit $?