cleanup: revert back don't build scripts archive step (#11838)

Revert "Revert "scripts: don't build archives when pages haven't been changed" (#11837)"

This reverts commit 6aa6cd8659.

scripts/build.sh

@@ -14,14 +14,24 @@ function initialize {
   fi
 
   export TLDR_ARCHIVE="tldr.zip"
+  DIFF="$(git diff --name-only @^ @ | cut -d'/' -f1)"
+  export DIFF
 }
 
 function build_index {
+  if ! grep -xq "pages.*" <<< "$DIFF"; then
+    return
+  fi
+
   npm run build-index
   echo "Pages index successfully built."
 }
 
 function build_archive {
+  if ! grep -xq "pages.*" <<< "$DIFF"; then
+    return
+  fi
+
   rm -f "$TLDR_ARCHIVE"
   cd "$TLDRHOME/"
   zip -q -r "$TLDR_ARCHIVE" pages* LICENSE.md index.json
@@ -29,19 +39,20 @@ function build_archive {
 }
 
 function build_translation_archives {
-  local source_directory="$TLDRHOME"
-  local target_directory="$TLDR_LANG_ARCHIVES_DIRECTORY"
+  local source_directory target_directory lang archive_name
+  source_directory="$TLDRHOME"
+  target_directory="$TLDR_LANG_ARCHIVES_DIRECTORY"
   mkdir -p "$target_directory"
   rm -f "$target_directory"/*
 
   for lang_dir in "$source_directory"/pages*; do
-    # Skip symlinks (pages.en) and things that are not directories
-    if [[ ! -d $lang_dir || -h $lang_dir ]]; then
+    lang=$(basename "$lang_dir")
+    # Skip symlinks (pages.en), files outside pages* and directories that haven't been changed.
+    if [[ ! -d $lang_dir || -h $lang_dir ]] || ! grep -Fxq "$lang" <<< "$DIFF"; then
       continue
     fi
 
-    local lang=$(basename "$lang_dir")
-    local archive_name="tldr-$lang.zip"
+    archive_name="tldr-$lang.zip"
 
     # Create the zip archive
 
@@ -53,7 +64,9 @@ function build_translation_archives {
   done
 
   cd "$target_directory"
+  if grep -Fxq pages <<< "$DIFF"; then
     cp tldr-pages.zip tldr-pages.en.zip
+  fi
 }
 
 ###################################

scripts/deploy.sh

@@ -30,21 +30,26 @@ function initialize {
 
 function upload_assets {
   git clone --quiet --depth 1 git@github.com:${SITE_REPO_SLUG}.git "$SITE_HOME"
-  mv -f "$TLDR_ARCHIVE" "$SITE_HOME/assets/"
+  [[ -f "$TLDR_ARCHIVE" ]] && mv -f "$TLDR_ARCHIVE" "$SITE_HOME/assets/"
   find "$TLDR_LANG_ARCHIVES_DIRECTORY" -maxdepth 1 -name "*.zip" -exec mv -f {} "$SITE_HOME/assets/" \;
   rm -rf "$TLDR_LANG_ARCHIVES_DIRECTORY"
-  cp -f "$TLDRHOME/index.json" "$SITE_HOME/assets/"
+  [[ -f "$TLDRHOME/index.json" ]] && cp -f "$TLDRHOME/index.json" "$SITE_HOME/assets/"
   find "$TLDR_PDF_FILES_DIRECTORY" -maxdepth 1 -name "*.pdf" -exec mv -f {} "$SITE_HOME/assets/" \;
   rm -rf "$TLDR_PDF_FILES_DIRECTORY"
 
   cd "$SITE_HOME/assets"
   sha256sum -- index.json *.zip > tldr.sha256sums
 
+  # Check if there are changes before committing and pushing.
+  if git diff --quiet; then
+    echo "No changes to deploy."
+    return
+  fi
+
   git add -A
   git commit -m "[GitHub Actions] uploaded assets after commit tldr-pages/tldr@${GITHUB_SHA}"
   git push -q
-
-  echo "Assets (pages archive, index) deployed to static site."
+  echo "Assets (pages archive, index and checksum) deployed to the static site."
 }
 
 ###################################