Install office and video editing apps and set default apps

install/steps/apps.sh

@@ -0,0 +1,53 @@
+mimeapps_file="$config_dir/mimeapps.list"
+
+default_app_associations=(
+  "imv.desktop:image/png image/jpeg image/gif image/webp image/bmp image/tiff image/avif image/heif image/svg+xml"
+  "mpv.desktop:video/mp4 video/x-matroska video/webm video/quicktime video/x-msvideo video/mpeg video/ogg audio/mpeg audio/flac audio/ogg audio/x-wav audio/mp4"
+  "org.gnome.Evince.desktop:application/pdf"
+  "libreoffice-writer.desktop:application/vnd.oasis.opendocument.text application/msword application/vnd.openxmlformats-officedocument.wordprocessingml.document application/rtf"
+  "libreoffice-calc.desktop:application/vnd.oasis.opendocument.spreadsheet application/vnd.ms-excel application/vnd.openxmlformats-officedocument.spreadsheetml.sheet text/csv"
+  "libreoffice-impress.desktop:application/vnd.oasis.opendocument.presentation application/vnd.ms-powerpoint application/vnd.openxmlformats-officedocument.presentationml.presentation"
+)
+
+mime_default_chosen() {
+  [[ -f $mimeapps_file ]] || return 1
+  awk -v mime="$1" '
+    /^\[/ { in_defaults = ($0 == "[Default Applications]"); next }
+    in_defaults && index($0, mime "=") == 1 { found = 1 }
+    END { exit found ? 0 : 1 }
+  ' "$mimeapps_file"
+}
+
+install_default_apps() {
+  if ! command -v xdg-mime &>/dev/null; then
+    say "SKIP  default applications (xdg-utils not installed)"
+    return 0
+  fi
+
+  local pending=() entry desktop_file mime_types mime_type
+  for entry in "${default_app_associations[@]}"; do
+    desktop_file="${entry%%:*}"
+    mime_types="${entry#*:}"
+    [[ -f /usr/share/applications/$desktop_file ]] || continue
+    for mime_type in $mime_types; do
+      mime_default_chosen "$mime_type" && continue
+      pending+=("$desktop_file:$mime_type")
+    done
+  done
+
+  if (( ${#pending[@]} == 0 )); then
+    say "ok    default applications"
+    return 0
+  fi
+
+  note_change
+  if [[ $check == true ]]; then
+    say "would set ${#pending[@]} default application association(s)"
+    return 0
+  fi
+
+  for entry in "${pending[@]}"; do
+    xdg-mime default "${entry%%:*}" "${entry#*:}"
+  done
+  say "set   ${#pending[@]} default application association(s)"
+}