#!/bin/bash
#
# sunshine service script for Batocera
# maximumentropy/n2qz 20241214

# To install, save the script as /userdata/system/services/sunshine
# and then enable the service toggle in ES:
# SYSTEM SETTINGS > SERVICES > SUNSHINE

# This script is released under CC0 1.0 Universal (CC0 1.0) Public Domain Dedication.
# You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
#
# To view a copy of the CC0 license, visit https://creativecommons.org/publicdomain/zero/1.0/

# The sunshine.AppImage will store persistent state in a folder
# relative to the HOME directory.  At boot time, HOME will default to
# / while the correct setting (as seen when logged in) is
# /userdata/system.  To ensure persistence, set HOME correctly here.

export HOME=/userdata/system

# Set variables for the URL to retrieve the appimage, and various
# convenience variables.
#
# Use prerelease version for now, as latest release 0.23.1 is missing
# required library libthai.so.0
version=prerelease
appname=sunshine

if [ "${version}" = "prerelease" ]
then
    url=$(curl -s https://api.github.com/repos/LizardByte/Sunshine/releases | jq -r '.[0].assets[] | select(.name == "sunshine.AppImage") | .browser_download_url')
elif [ "${version}" = "release" ]
then
    url=$(curl -s https://api.github.com/repos/LizardByte/Sunshine/releases/latest | jq -r '.assets[] | select(.name == "sunshine.AppImage") | .browser_download_url')
else
    url="https://github.com/LizardByte/Sunshine/releases/download/v${version}/sunshine.AppImage"
fi

bindir="${HOME}/bin"
logdir="${HOME}/logs"
appimage="${appname}.${version}.AppImage"
fullpath="${bindir}/${appimage}"
service="$(basename -- "${BASH_SOURCE}")"
logfile="${logdir}/${service}.log"

# Append all output to the log file.
exec &> >(tee -a "$logfile")
echo "$(date): ${1} service ${service}"

case "$1" in
    start)
        # Code in here will be executed on boot.
        # Create a new log file and direct all output to it
        exec &> >(tee "$logfile")
        echo "$(date): ${1} service ${service}"
        # If the appimage doesn't exist ...
        if [ ! -x "${fullpath}" ]
        then
            # ... then create a folder to store the appimage, and download it.
            mkdir -p "${bindir}"
            echo "Downloading ${fullpath}"
            curl --location --fail --remove-on-error --remote-time --output "${fullpath}" "${url}"
            status=$?
            # If curl indicates an error status, or the downloaded file is missing or empty ...
            if [ "${status}" -ne 0 -o  ! -f "${fullpath}" -o ! -s "${fullpath}" ]
            then
                # ... then remove any partial download, and abort.
                if [ "${status}" -eq 0 ]
                then
                  # curl status indicates the download succeeded, but file is missing or empty.
                  # Set our exit code to the curl exit code corresponding to "write error"
                  status=23
                fi
                echo "Download of ${fullpath} from ${url} failed with status ${status}, aborting."
                rm -f "${fullpath}"
                exit $status
            fi
            # Download succeeded, set the appimage mode as executable.
            chmod +x "${fullpath}"
        fi
        # Set primary DISPLAY and start the appimage in the background.
        DISPLAY=:0.0 "${fullpath}" &
        ;;
    stop)
        # Code in here will be executed on shutdown.
        # Kill the running appimage.
        killall "${appname}"
        ;;
    restart|reload)
        # Code in here will executed when restart parameter is passed by the sysadmin.
        # Ask for service restart, this will call back to our stop and start methods.
        batocera-services restart "${service}"
        ;;
    status)
        # Code in here will executed when status parameter is passed by the sysadmin.
        if killall -0 "${appname}"
        then
            echo "${service} is running"
            exit 0
        else
            echo "${service} is stopped"
            exit 1
        fi
        ;;
    uninstall)
        # Code in here will executed when unistall parameter is passed by the sysadmin.
        # Stop and disable the service, and remove the appimage.
        batocera-services stop "${service}"
        batocera-services disable "${service}"
        rm -f "${fullpath}"
        ;;
    *)
        # Code in here will be executed in all other conditions.
        echo "Usage: $0 {start|stop|restart|status|uninstall}"
        ;;
esac
 
exit $?