dictee.install

_install_uinput_drop_in() {
    # The AUR `dotool` package ships /usr/lib/udev/rules.d/80-dotool.rules
    # with MODE="0620" (write-only for the input group). python-evdev opens
    # /dev/uinput with O_RDWR (read+write), which fails with that mode →
    # dictee-ptt.service crashes with "could not open uinput device in
    # write mode" and the PTT shortcut silently doesn't work.
    #
    # The .deb postinst and .rpm %post fix this by `sed`ing the rule file
    # they ship themselves in /etc/udev/rules.d/. On Arch we don't ship
    # the rule (file conflict with the dotool AUR package would block
    # the install), so we drop a higher-priority override into /etc/
    # which: (1) is honored by udev because /etc/ overrides /usr/lib/,
    # (2) survives `pacman -S dotool` upgrades that would otherwise
    # reset the rule shipped by AUR.
    DROP_IN="/etc/udev/rules.d/81-dictee-uinput.rules"
    cat > "$DROP_IN" <<'RULES'
# Drop-in installed by dictee. Overrides MODE from /usr/lib/udev/rules.d/80-dotool.rules.
# python-evdev (used by dictee-ptt) opens /dev/uinput with O_RDWR, so we need
# read+write for the input group, not just write (0620).
KERNEL=="uinput", MODE="0660"
RULES
    udevadm control --reload-rules 2>/dev/null || true
    udevadm trigger --action=change /dev/uinput 2>/dev/null || true
}

_setup_user_groups() {
    # Add logged-in users to the 'input' group (dotool / dictee-ptt
    # need /dev/uinput access) and 'docker' group when docker is
    # available (LibreTranslate runs in Docker). Mirrors postinst .deb
    # and %post .rpm so an Arch user gets the same default behaviour
    # as Debian/Ubuntu/Fedora installs — without it, PTT shortcut and
    # LibreTranslate stay broken until the user runs usermod manually.
    for uid in $(loginctl list-sessions --no-legend 2>/dev/null | awk '{print $2}' | sort -u); do
        user=$(id -nu "$uid" 2>/dev/null) || continue
        [ "$user" = "root" ] && continue
        if ! id -nG "$user" | grep -qw input; then
            usermod -aG input "$user"
            echo "✓ $user added to group 'input' (dotool / PTT)"
        fi
        if command -v docker >/dev/null 2>&1; then
            if ! id -nG "$user" | grep -qw docker; then
                usermod -aG docker "$user"
                echo "✓ $user added to group 'docker' (LibreTranslate)"
            fi
        fi
    done
}

post_install() {
    # Load uinput now so dotool & dictee-ptt work without a reboot.
    # /etc/modules-load.d/dictee-uinput.conf handles subsequent boots.
    modprobe uinput 2>/dev/null || true

    _install_uinput_drop_in
    _setup_user_groups

    # Create Python venv for text2num (number conversion)
    PP_VENV="/usr/share/dictee/postprocess-env"
    if command -v python3 >/dev/null 2>&1; then
        if [ ! -d "$PP_VENV" ]; then
            if python3 -m venv "$PP_VENV" 2>/dev/null; then
                "$PP_VENV/bin/pip" install --quiet --upgrade pip 2>/dev/null || true
                "$PP_VENV/bin/pip" install --quiet text2num 2>/dev/null || \
                    echo "Warning: text2num install failed (check internet)"
            fi
        fi
    fi
}

post_upgrade() {
    modprobe uinput 2>/dev/null || true

    _install_uinput_drop_in
    _setup_user_groups

    PP_VENV="/usr/share/dictee/postprocess-env"
    if [ -d "$PP_VENV" ] && command -v python3 >/dev/null 2>&1; then
        "$PP_VENV/bin/pip" install --quiet --upgrade pip 2>/dev/null || true
        "$PP_VENV/bin/pip" install --quiet --upgrade text2num 2>/dev/null || true
    else
        post_install
    fi
}

pre_remove() {
    rm -rf /usr/share/dictee/postprocess-env
    rm -f /etc/udev/rules.d/81-dictee-uinput.rules
}