Repair stale Steam user state

1 files changed, 57 insertions, 0 deletions

diff --git a/build_files/patch-bazzite-deck-identity.sh b/build_files/patch-bazzite-deck-identity.sh
index 05b6e5f..ea561e4 100755
--- a/build_files/patch-bazzite-deck-identity.sh
+++ b/build_files/patch-bazzite-deck-identity.sh
@@ -55,6 +55,61 @@ patch_condition() {
   fi
 }
 
+patch_steam_state_migration() {
+  local file="$1"
+  # shellcheck disable=SC2016
+  local condition='if [[ $IMAGE_NAME =~ "deck" || $IMAGE_NAME == aerocore-os ]]; then'
+  local marker='AeroCore Steam state migration'
+  local patched_file
+
+  if [[ ! -f "$file" ]]; then
+    echo "Unable to locate expected Bazzite Deck file: $file" >&2
+    exit 1
+  fi
+
+  if grep -Fq "$marker" "$file"; then
+    return 0
+  fi
+
+  if [[ "$(grep -Foc "$condition" "$file" || true)" -ne 1 ]]; then
+    echo "Unable to locate the AeroCore Steam bootstrap condition in $file" >&2
+    exit 1
+  fi
+
+  patched_file="$(mktemp)"
+  awk -v condition="$condition" '
+    !inserted && $0 == condition {
+      print
+      print "  # AeroCore Steam state migration"
+      print "  # Older AeroCore images could leave ~/.steam/steam as a directory."
+      print "  # Preserve it before restoring the symlink expected by Steam."
+      print "  STEAM_DATA_HOME=\"$HOME/.local/share/Steam\""
+      print "  STEAM_DATA_LINK=\"$HOME/.steam/steam\""
+      print "  if [[ -d \"$STEAM_DATA_LINK\" && ! -L \"$STEAM_DATA_LINK\" && -x \"$STEAM_DATA_HOME/steam.sh\" ]]; then"
+      print "    STEAM_DATA_BACKUP=\"${STEAM_DATA_LINK}.aerocore-backup-$(date +%s)-$$\""
+      print "    STEAM_DATA_TEMP=\"${STEAM_DATA_LINK}.aerocore-link-$$\""
+      print "    if ln -s \"$STEAM_DATA_HOME\" \"$STEAM_DATA_TEMP\" && mv -- \"$STEAM_DATA_LINK\" \"$STEAM_DATA_BACKUP\" && mv -- \"$STEAM_DATA_TEMP\" \"$STEAM_DATA_LINK\"; then"
+      print "      :"
+      print "    else"
+      print "      rm -f -- \"$STEAM_DATA_TEMP\""
+      print "    fi"
+      print "  fi"
+      inserted=1
+      next
+    }
+    { print }
+    END { if (!inserted) exit 1 }
+  ' "$file" > "$patched_file"
+
+  cp "$patched_file" "$file"
+  rm -f "$patched_file"
+
+  if ! grep -Fq "$marker" "$file"; then
+    echo "Failed to add the AeroCore Steam state migration to $file" >&2
+    exit 1
+  fi
+}
+
 # Keep AeroCore's public image-name, while restoring the Deck capability checks
 # used by Bazzite's runtime scripts. These are literal source lines; variable
 # expansion must happen later, when the scripts run on the installed system.
@@ -84,6 +139,8 @@ patch_condition \
   'if [[ $IMAGE_NAME =~ "deck" || $IMAGE_NAME == aerocore-os ]]; then' \
   1
 
+patch_steam_state_migration "$(target_path /usr/bin/bazzite-steam)"
+
 # shellcheck disable=SC2016
 patch_condition \
   "$(target_path /usr/libexec/bazzite-user-setup)" \