theme and scripts

scripts/theme.sh

@@ -0,0 +1,71 @@
+usage() {
+  echo "usage: theme <dark|light|toggle|current>"
+}
+
+read_mode() {
+  if [[ -f "@STATE_FILE@" ]]; then
+    mode=$(tr -d '[:space:]' < "@STATE_FILE@")
+    if [[ "$mode" == "dark" || "$mode" == "light" ]]; then
+      echo "$mode"
+      return
+    fi
+  fi
+
+  echo "@DEFAULT_MODE@"
+}
+
+link_mode_assets() {
+  local mode="$1"
+  local tmux_target
+
+  case "$mode" in
+    dark)
+      tmux_target="@TMUX_DARK_FILE@"
+      ;;
+    light)
+      tmux_target="@TMUX_LIGHT_FILE@"
+      ;;
+    *)
+      echo "invalid mode: $mode" >&2
+      exit 1
+      ;;
+  esac
+
+  mkdir -p "@STATE_DIR@" "@TMUX_DIR@"
+  printf '%s\n' "$mode" > "@STATE_FILE@"
+  ln -sfn "$tmux_target" "@TMUX_CURRENT_FILE@"
+
+  if command -v tmux >/dev/null 2>&1 && tmux start-server >/dev/null 2>&1; then
+    tmux source-file "@TMUX_CONFIG@" >/dev/null 2>&1 || true
+  fi
+
+  for socket in /tmp/nvim-*.sock; do
+    [[ -S "$socket" ]] || continue
+    nvim --server "$socket" --remote-send "<Cmd>ThemeSync $mode<CR>" >/dev/null 2>&1 || true
+  done
+}
+
+mode="${1:-current}"
+
+case "$mode" in
+  dark|light)
+    ;;
+  toggle)
+    if [[ "$(read_mode)" == "dark" ]]; then
+      mode="light"
+    else
+      mode="dark"
+    fi
+    ;;
+  current)
+    read_mode
+    exit 0
+    ;;
+  *)
+    usage >&2
+    exit 1
+    ;;
+esac
+
+link_mode_assets "$mode"
+printf 'applied %s theme\n' "$mode"