#!/usr/bin/env bash
# fiw-shot: Spectacle in background mode (never opens the app window).
# The shot goes straight to the clipboard, then a notification shows the
# thumbnail (drag it into any app) with Save / Edit buttons.
#
#   fiw-shot region   Alt+S  select area (adjust with handles, Enter = take)
#   fiw-shot screen   Alt+D  monitor under the cursor
set -u

mode=${1:-region}
tmp_dir="${XDG_RUNTIME_DIR:-/tmp}/fiw-shot"   # tmpfs, gone at logout
save_dir="$HOME/Pictures/Screenshots"

case $mode in
    region) flag=-r ;;
    screen) flag=-m ;;
    *) echo "usage: fiw-shot region|screen" >&2; exit 2 ;;
esac

mkdir -p "$tmp_dir"
# keep the last 20 unsaved shots, drop older ones
ls -1t "$tmp_dir"/*.png 2>/dev/null | tail -n +21 | xargs -r rm -f --

name="Screenshot_$(date +%Y%m%d_%H%M%S).png"
shot="$tmp_dir/$name"

spectacle --background --nonotify $flag --output "$shot" 2>/dev/null
[[ -s $shot ]] || exit 0    # Esc during selection: nothing to do

wl-copy --type image/png < "$shot"

action=$(notify-send --app-name=Screenshot --icon="$shot" \
    --hint="variant:x-kde-urls:@as ['file://$shot']" \
    --action=save=Save --action=edit=Edit \
    "Copied to clipboard" "$name")

case $action in
    save)
        mkdir -p "$save_dir"
        cp -- "$shot" "$save_dir/$name"
        notify-send --transient --app-name=Screenshot --icon="$save_dir/$name" \
            --hint="variant:x-kde-urls:@as ['file://$save_dir/$name']" \
            "Saved" "$save_dir/$name"
        ;;
    edit)
        # Spectacle's editor; copy/save from there when done
        spectacle --edit-existing "$shot"
        ;;
esac