Set release version and date from git repo

Author: Unrud

com.github._4lex4.ScanTailor-Advanced.metainfo.xml renamed to com.github._4lex4.ScanTailor-Advanced.metainfo.xml.in

@@ -48,7 +48,7 @@
   <url type="bugtracker">https://github.com/4lex4/scantailor-advanced/issues</url>
   <url type="homepage">https://github.com/4lex4/scantailor-advanced</url>
   <releases>
-    <release version="2019.8.16 Early Access" date="2019-08-16" />
+    <release version="{RELEASE_VERSION}" date="{RELEASE_DATE}" />
   </releases>
   <content_rating type="oars-1.1" />
 </component>

com.github._4lex4.ScanTailor-Advanced.yaml

@@ -32,24 +32,30 @@ modules:
 
   - name: scantailor-advanced
     sources:
-      - type: archive
-        url: https://github.com/4lex4/scantailor-advanced/archive/refs/tags/2019.8.16_EA.tar.gz
-        sha256: 7ee3aaffa9a234a3171d3d0d75bc34a6acc7e78f85f5a70d6cf7ae481c8d1a48
+      - type: git
+        url: https://github.com/4lex4/scantailor-advanced.git
+        tag: 2019.8.16_EA
+        commit: c5eba3933f7e47fde753a8d51cd6ee2ff3d9954e
         x-checker-data:
           type: json
           url: https://api.github.com/repos/4lex4/scantailor-advanced/releases
-          version-query: '[.[] | select(.draft == false and .prerelease == true)][0].tag_name'
-          url-query: '"https://github.com/4lex4/scantailor-advanced/archive/refs/tags/" + $version + ".tar.gz"'
+          tag-query: '[.[] | select(.draft == false and .prerelease == true)][0].tag_name'
       - type: file
-        path: com.github._4lex4.ScanTailor-Advanced.metainfo.xml
+        path: com.github._4lex4.ScanTailor-Advanced.metainfo.xml.in
       - type: patch
         path: scantailor-qt5.15.patch
     buildsystem: cmake-ninja
     builddir: true
     config-opts:
       - -DCMAKE_BUILD_TYPE=RelWithDebInfo
     post-install:
-      - install -Dm0644 -t /app/share/metainfo ../com.github._4lex4.ScanTailor-Advanced.metainfo.xml
+      - |
+        # Set version and release data in our custom Metainfo and install it
+        set -e
+        version="$(git describe --tags --exact-match)"
+        date="$(git log -1 --date=short --format=%cd)"
+        sed -e "s/{RELEASE_VERSION}/${version}/g" -e "s/{RELEASE_DATE}/${date}/g" ../com.github._4lex4.ScanTailor-Advanced.metainfo.xml.in >com.github._4lex4.ScanTailor-Advanced.metainfo.xml
+        install -Dm0644 -t /app/share/metainfo com.github._4lex4.ScanTailor-Advanced.metainfo.xml
       - mv /app/share/mime/packages/scantailor-project.xml /app/share/mime/packages/com.github._4lex4.ScanTailor-Advanced.xml
       - |
         for res in 16 32 48 64 128 256 512; do