niri-scratchpad

#! /usr/bin/env bash

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#
# Adapted from the many ideas shared at: https://github.com/YaLTeR/niri/discussions/329

SCRATCH_WORKSPACE_NAME=scratch

SEARCH_METHOD_FLAG=$1
SCRATCH_WIN_NAME=$2
SPAWN_FLAG=$3
PROCESS_NAME=$4

showHelp() {
  echo "[niri-scratchpad]"
  echo ""
  echo "  Open scratchpad app by app-id:"
  echo "    - 'niri-scratchpad spotify'"
  echo "    - 'niri-scratchpad --app-id spotify'"
  echo ""
  echo "  Open scratchpad by title (some apps do not support app-id):"
  echo "    - 'niri-scratchpad --title Telegram'"
  echo ""
  echo "  Spawn process on first request if it does not exist:"
  echo "    - 'niri-scratchpad --app-id Audacious --spawn audacious'"
  echo ""
  echo "  NOTE: when using the '--spawn' flag, you MUST indicate either '--app-id' or 'title' flag as well."
}

windows=$(niri msg -j windows)

case $SEARCH_METHOD_FLAG in
  "--app-id")
    app_window=$(echo "$windows" | jq ".[] | select(.app_id == \"$SCRATCH_WIN_NAME\")")
    ;;
  "--title")
    app_window=$(echo "$windows" | jq ".[] | select(.title == \"$SCRATCH_WIN_NAME\")")
    ;;
  "--help")
    showHelp
    exit 0
    ;;
  "--version")
    echo "niri-scratchpad v0.0.1"
    exit 0
    ;;
  *)
    SCRATCH_WIN_NAME=$1
    app_window=$(echo "$windows" | jq ".[] | select(.app_id == \"$SCRATCH_WIN_NAME\")")
    ;;
esac

win_id=$(echo "$app_window" | jq .id)

if [[ -z $win_id ]]; then
  case $SPAWN_FLAG in
    "--spawn")
      if [[ -z $PROCESS_NAME ]]; then
        showHelp
        exit 1
      else
        niri msg action spawn -- "$PROCESS_NAME"
        exit 0
      fi
      ;;
    *)
      showHelp
      exit 1
      ;;
  esac
fi

moveWindowToScratchpad() {
  niri msg action move-window-to-workspace --window-id "$win_id" "$SCRATCH_WORKSPACE_NAME" --focus=false
  if [[ -n $NIRI_SCRATCHPAD_ANIMATIONS ]]; then
    niri msg action move-window-to-tiling --id "$win_id"
  fi
}

bringScratchpadWindowToFocus() {
  is_win_floating=$(echo "$app_window" | jq .is_floating)
  niri msg action move-window-to-monitor --id "$win_id" "$output_id"
  niri msg action move-window-to-workspace --window-id "$win_id" "$work_idx"
  if [[ $is_win_floating == "false" && -n $NIRI_SCRATCHPAD_ANIMATIONS ]]; then
    niri msg action move-window-to-floating --id "$win_id"
  fi
  niri msg action focus-window --id "$win_id"
}

if [[ $(echo "$app_window" | jq .is_focused) == "false" ]]; then
  focused_workspaces=$(niri msg -j workspaces | jq '.[] | select(.is_focused == true)')
  work_id=$(echo "$focused_workspaces" | jq .id)
  work_idx=$(echo "$focused_workspaces" | jq .idx)
  output_id=$(echo "$focused_workspaces" | jq -r .output)
  win_work_id=$(echo "$app_window" | jq .workspace_id)
  win_output=$(echo "$app_window" | jq .output)
  win_work_id_global=$(niri msg -j workspaces | jq ".[] | select(.idx == $win_work_id and .output==$win_output)" | jq .id)

  if [[ "$win_work_id_global" == "$work_id" ]]; then
    moveWindowToScratchpad
  else
    bringScratchpadWindowToFocus
  fi
else
  moveWindowToScratchpad
fi