#!/bin/sh

# Make the `GSettings` schemas of all user-installed GNOME Shell extensions
# visible to a plain `gsettings`, by symlinking the *.gschema.xml files
# into the user schema directory and compiling them
#
# Idempotent: Re-running refreshes the links, prunes dangling ones
#             (e.g., from removed extensions), and recompiles

set -eu


XDG_DATA_HOME="${XDG_DATA_HOME:-$HOME/.local/share}"

EXTENSIONS_DIR="$XDG_DATA_HOME/gnome-shell/extensions"
SCHEMAS_DIR="$XDG_DATA_HOME/glib-2.0/schemas"


mkdir -p "$SCHEMAS_DIR"


# Prune symlinks whose target no longer exists
find "$SCHEMAS_DIR" -maxdepth 1 -type l ! -exec test -e {} \; -exec rm -v -- {} \;


# Link every schema shipped by an extension
for xml in "$EXTENSIONS_DIR"/*/schemas/*.gschema.xml; do
    [ -e "$xml" ] || continue  # because the glob does not expand if empty
    echo "  $(basename "$xml")"
    ln -sf -- "$xml" "$SCHEMAS_DIR/"
done


glib-compile-schemas "$SCHEMAS_DIR"