screenshot

#!/usr/bin/env bash

set -euo pipefail

# Usage: screenshot
#
# I cannot fathom why it is so complicated to take screenshots on
# modern Linux desktop environments. This script implements my
# preferred convention for screenshots, which is that there is a
# system global hotkey that lets you select a screen region, then
# copies the screenshot to the clipboard as well as saving it in a
# properly lexicographically sorted manner to a screenshots folder.
#
# If you've got a better solution for this than cosmic-screenshot,
# that still works on Wayland, I'm all ears. Because that ||: is
# necessary to handle a segmentation fault that the program throws
# every time, wtf.
#
# Setup: ln -s /tmp/doesnotexist ~/Pictures/Screenshots

file="${HOME}/files/screenshots/$(date +%Y%m%d%H%M%S).png"
mkdir -p "$(dirname "${file}")"
if command -v cosmic-screenshot &>/dev/null; then
    if ! [[ -L ~/Pictures/Screenshots && ! -e ~/Pictures/Screenshots ]]; then
        echo >&2 "Need to set up ~/Pictures/Screenshots as broken symlink, first"
        exit 1
    fi
    wl-copy -t image/png -c
    cosmic-screenshot --notify=false ||:
    wl-paste -t image/png > "${file}" ||:
    if [[ ! -s "${file}" ]]; then
        rm -f "${file}"
        echo >&2 "Failed to save screenshot"
        if [[ ! -t 1 ]]; then
            timeout -sINT 1 notify-send -w "Failed to save screenshot" ||:
        fi
        exit 1
    fi
    echo >&2 "Successfully saved screenshot"
    echo "${file}"
elif command -v gnome-screenshot &>/dev/null; then
    gnome-screenshot -a -f "${file}"
    xclip -selection clipboard -t image/png -i "${file}"
elif command -v spectacle &>/dev/null; then
    spectacle -b -r -o "${file}" -n
    xclip -selection clipboard -t image/png -i "${file}"
else
    echo >&2 "command not found: gnome-screenshot (or spectacle, cosmic-screenshot)"
    exit 1
fi