Refactor versioning script

.github/workflows/build.yml

@@ -6,23 +6,26 @@ on:
 jobs:
   increase-version:
     runs-on: ubuntu-latest
+    outputs:
+      version: ${{ steps.inc-patch.outputs.version }}
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions-ecosystem/action-get-latest-tag@v1
-        id: get-latest-tag
-
-      - uses: actions-ecosystem/action-bump-semver@v1
-        id: bump-semver
-        with:
-          current_version: ${{ steps.get-latest-tag.outputs.tag }}
-          level: patch
-
-      - uses: actions-ecosystem/action-push-tag@v1
+      - uses: actions/checkout@v3
         with:
-          tag: ${{ steps.bump-semver.outputs.new_version }}
+          fetch-depth: 0
+      - name: increase patch
+        id: inc-patch
+        run: |
+          echo "version=$(./scripts/version.sh inc patch)" >> "$GITHUB_OUTPUT"
+      - name: push tag ${{ steps.inc-patch.outputs.version }}
+        env:
+          version: ${{ steps.inc-patch.outputs.version }}
+        run: |
+          git config user.name "${{ github.actor }}"
+          git config user.email "${{ github.actor }}@users.noreply.github.com"
+          git tag "$version"
+          git push origin "$version"
 
   build:
-    needs: [increase-version]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
@@ -36,3 +39,39 @@ jobs:
           ./scripts/install-font.sh "Gentium Book Plus" "EB Garamond"
       - name: build project
         run: make
+      - name: save built document
+        uses: actions/upload-artifact@v2
+        with:
+          name: built-document
+          path: out/main.pdf
+          retention-days: 1
+
+  release:
+    needs: [increase-version, build]
+    runs-on: ubuntu-latest
+    steps:
+      - name: retrieve built document
+        uses: actions/download-artifact@v2
+        with:
+          name: built-document
+
+      - name: release
+        uses: actions/create-release@v1
+        id: create_release
+        with:
+          draft: false
+          prerelease: false
+          release_name: ${{ needs.increase-version.outputs.version }}
+          tag_name: ${{ needs.increase-version.outputs.version }}
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+
+      - name: upload built document
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: main.pdf
+          asset_name: prayer-book.pdf
+          asset_content_type: application/pdf

scripts/version.sh

@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+
+##? Manages project versioning.
+##?
+##? Commands:
+
+set -o errexit
+
+declare reset="\e[0m"
+declare red="\e[0;31m"
+
+err() { echo -e "${red}$@${reset}" 1>&2 ; }
+errexit() { err "$@" ; exit 1 ; }
+
+usage() {
+    [[ "$#" -gt 0 ]] && err "$@"
+    sed -n 's:^##? \?::p' "$0"
+    exit 1
+}
+
+tags() { git tag | grep -E 'v[0-9]+\.[0-9]+\.[0-9]+' ; }
+last_tag() { tags | sort --reverse | head -n1 ; }
+
+get_major() { echo "$1" | sed 's:v\([0-9]\+\)\..*:\1:' ; }
+get_minor() { echo "$1" | sed 's:v[0-9]\+\.\([0-9]\+\)\..*:\1:' ; }
+get_patch() { echo "$1" | sed 's:v[0-9]\+\.[0-9]\+\.\([0-9]\+\):\1:' ; }
+
+inc() {
+    local level="$1"
+    [[ -z "$level" ]] && usage
+    local last="${2:-$(last_tag)}"
+    local patch="$(get_patch "$last")"
+    local minor="$(get_minor "$last")"
+    local major="$(get_major "$last")"
+    local "$level"="$(($level+1))"
+    case "$level" in
+        minor) patch="0" ;;
+        major) patch="0" ; minor="0" ;;
+    esac
+    echo "v$major.$minor.$patch"
+}
+
+case "$1" in
+##?   last                                Returns last version.
+    last) last_tag ;;
+##?   list                                Lists all versions.
+    list) tags ;;
+##?   inc (major|minor|patch) <version>   Increases a version level. By default,
+##?                                       will use the last version.
+    inc) shift ; inc "$@" ;;
+    "") usage ;;
+    *) usage "Unknown command '$1'" ;;
+esac