#!/bin/bash
#
# Copyright (C) 2026 Danilo M. <danix@danix.xyz>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# The one runnable check for kdeconnect-state.sh. It puts a stub qdbus6 on
# PATH and runs the real script against it, so nothing here touches the live
# daemon and the whole thing runs in milliseconds.
#
# Fixture: idA a reachable phone with a battery, idB a laptop whose name
# contains a tab and which has no battery plugin, idC an unpaired phone with
# an incoming pairing request and a verification key.
#
# Usage: ./test-kdeconnect-state.sh   (exit 0 = all passed)

set -u

here="$(cd "$(dirname "$0")" && pwd)"
stub="$(mktemp -d)"
trap 'rm -rf "$stub"' EXIT

cat > "$stub/qdbus6" <<'STUB'
#!/bin/bash
path="$2"; m="$3"; a="$4"; b="$5"

if [[ "${FAIL_DEVICES:-}" == 1 && "$m" == "org.kde.kdeconnect.daemon.devices" ]]; then
    exit 1
fi
if [[ "${ZERO_DEVICES:-}" == 1 && "$m" == "org.kde.kdeconnect.daemon.devices" ]]; then
    exit 0
fi

case "$path:$m" in
    "/modules/kdeconnect:org.kde.kdeconnect.daemon.devices")
        printf '%s\n' idA idB idC ;;
    "/modules/kdeconnect:org.freedesktop.DBus.Properties.Get")
        if [[ "$a" == "org.kde.kdeconnect.daemon" && "$b" == "pairingRequests" ]]; then
            [[ "${ZERO_DEVICES:-}" == 1 ]] || printf '%s\n' idC
        fi ;;
    "/modules/kdeconnect/devices/idA:org.kde.kdeconnect.device.name") printf 'Pixel 6 Pro\n' ;;
    "/modules/kdeconnect/devices/idA:org.kde.kdeconnect.device.type") printf 'phone\n' ;;
    "/modules/kdeconnect/devices/idA:org.kde.kdeconnect.device.isPaired") printf 'true\n' ;;
    "/modules/kdeconnect/devices/idA:org.kde.kdeconnect.device.isReachable") printf 'true\n' ;;
    "/modules/kdeconnect/devices/idA:org.kde.kdeconnect.device.isPairRequested") printf 'false\n' ;;
    "/modules/kdeconnect/devices/idA:org.kde.kdeconnect.device.isPairRequestedByPeer") printf 'false\n' ;;
    "/modules/kdeconnect/devices/idA/battery:org.freedesktop.DBus.Properties.Get")
        [[ "$b" == charge ]] && printf '50\n' || printf 'true\n' ;;
    "/modules/kdeconnect/devices/idB:org.kde.kdeconnect.device.name") printf 'kali\tlaptop\n' ;;
    "/modules/kdeconnect/devices/idB:org.kde.kdeconnect.device.type") printf 'desktop\n' ;;
    "/modules/kdeconnect/devices/idB:org.kde.kdeconnect.device.isPaired") printf 'true\n' ;;
    "/modules/kdeconnect/devices/idB:org.kde.kdeconnect.device.isReachable") printf 'false\n' ;;
    "/modules/kdeconnect/devices/idB:org.kde.kdeconnect.device.isPairRequested") printf 'false\n' ;;
    "/modules/kdeconnect/devices/idB:org.kde.kdeconnect.device.isPairRequestedByPeer") printf 'false\n' ;;
    "/modules/kdeconnect/devices/idB/battery:org.freedesktop.DBus.Properties.Get") exit 1 ;;
    "/modules/kdeconnect/devices/idC:org.kde.kdeconnect.device.name") printf 'New Phone\n' ;;
    "/modules/kdeconnect/devices/idC:org.kde.kdeconnect.device.type") printf 'phone\n' ;;
    "/modules/kdeconnect/devices/idC:org.kde.kdeconnect.device.isPaired") printf 'false\n' ;;
    "/modules/kdeconnect/devices/idC:org.kde.kdeconnect.device.isReachable") printf 'true\n' ;;
    "/modules/kdeconnect/devices/idC:org.kde.kdeconnect.device.isPairRequested") printf 'false\n' ;;
    "/modules/kdeconnect/devices/idC:org.kde.kdeconnect.device.isPairRequestedByPeer") printf 'true\n' ;;
    "/modules/kdeconnect/devices/idC:org.kde.kdeconnect.device.verificationKey") printf '1826C6D4\n' ;;
    "/modules/kdeconnect/devices/idC/battery:org.freedesktop.DBus.Properties.Get") exit 1 ;;
esac
STUB
chmod +x "$stub/qdbus6"

pass=0
fail=0

check() {
    local name="$1" want="$2" got="$3"
    if [[ "$want" == "$got" ]]; then
        pass=$((pass + 1))
    else
        fail=$((fail + 1))
        printf 'FAIL: %s\n  want: %q\n  got:  %q\n' "$name" "$want" "$got"
    fi
}

# The full line protocol for the fixture. The name with a tab is one field
# after sanitizing; the two battery-less devices leave the charge and
# charging fields empty and zero respectively.
want="$(printf 'request\tidC')
$(printf 'device\tidA\tPixel 6 Pro\tphone\t1\t1\t0\t0\t\t50\t1')
$(printf 'device\tidB\tkali laptop\tdesktop\t1\t0\t0\t0\t\t\t0')
$(printf 'device\tidC\tNew Phone\tphone\t0\t1\t0\t1\t1826C6D4\t\t0')"

got="$(PATH="$stub:$PATH" bash "$here/kdeconnect-state.sh")"
check "the line protocol" "$want" "$got"

# A daemon that is down is not an empty device list.
got="$(PATH="$stub:$PATH" FAIL_DEVICES=1 bash "$here/kdeconnect-state.sh")"
rc=$?
check "a failed query prints nothing" "" "$got"
check "a failed query exits non-zero" "1" "$([[ $rc -ne 0 ]] && echo 1 || echo 0)"

# A reachable daemon with no devices is a valid empty list.
got="$(PATH="$stub:$PATH" ZERO_DEVICES=1 bash "$here/kdeconnect-state.sh")"
rc=$?
check "zero devices prints nothing" "" "$got"
check "zero devices exits zero" "0" "$rc"

printf '\n%d passed, %d failed\n' "$pass" "$fail"
[[ "$fail" -eq 0 ]]