#!/usr/bin/env bash

wm_list() {
    dbus-send --session \
        --dest=org.gnome.Shell \
        --print-reply=literal \
        /org/gnome/Shell/Extensions/Windows \
        org.gnome.Shell.Extensions.Windows.List | jq 
}

wm_details() {
    local win="$1"
    dbus-send --session \
        --dest=org.gnome.Shell \
        --print-reply=literal \
        /org/gnome/Shell/Extensions/Windows \
        org.gnome.Shell.Extensions.Windows.Details uint32:$win | jq 
}

wm_title() {
    local win="$1"
    dbus-send --session \
        --dest=org.gnome.Shell \
        --print-reply=literal \
        /org/gnome/Shell/Extensions/Windows \
        org.gnome.Shell.Extensions.Windows.GetTitle uint32:$win | jq
}

wm_frame() {
    local win="$1"
    dbus-send --session \
        --dest=org.gnome.Shell \
        --print-reply=literal \
        /org/gnome/Shell/Extensions/Windows \
        org.gnome.Shell.Extensions.Windows.GetFrameBounds uint32:$win | jq
}

wm_resize() {
    local win=$1
    local x=$2
    local y=$3
    local width=$4
    local height=$5
    dbus-send --session \
        --dest=org.gnome.Shell \
        --print-reply=literal \
        /org/gnome/Shell/Extensions/Windows \
        org.gnome.Shell.Extensions.Windows.MoveResize \
            uint32:$win \
            int32:$x \
            int32:$y \
            uint32:$width \
            uint32:$height
}

wm_focused() {
    for win in $(wmctrl list | jq '.[] | .id'); do \
        wmctrl details $win; \
    done \
    | jq '.|select(.focus)'
}

wm_current() {
    dbus-send --session \
        --dest=org.gnome.Shell \
        --print-reply=literal \
        /org/gnome/Shell/Extensions/Windows \
        org.gnome.Shell.Extensions.Windows.List \
        | jq -r '.[] | .wm_class' | tail -n 1
}


wm_windows() {
    local target="${1}"
    dbus-send --session \
        --dest=org.gnome.Shell \
        --print-reply=literal \
        /org/gnome/Shell/Extensions/Windows \
        org.gnome.Shell.Extensions.Windows.List \
        | jq '.[] | select(.wm_class=="'${target}'") | .id' 
}

wm_request() {
    local request="${1}"
    local exec="${2}"
    
    local strategy=(tail -n 1)
    local choices="$(printf '"%s",' $request | sed 's|.$||')"
    local filter=(jq '.[] | select(.wm_class as $in | ['$choices'] | index($in)) | .id')
    
    local existing=$(dbus-send --session \
            --dest=org.gnome.Shell \
            --print-reply=literal \
            /org/gnome/Shell/Extensions/Windows \
            org.gnome.Shell.Extensions.Windows.List \
            | "${filter[@]}" \
            | "${strategy[@]}")
            
    [ "$existing" == "" ] && $exec || wm_activate $request
}

wm_activate() {
    local target="${1}"

    case "$@" in
        *${target}*)
            local strategy=(head -n 1)
            ;;
        *)
            local strategy=(tail -n 1)
            ;;
    esac
    
    local choices="$(printf '"%s",' $@ | sed 's|.$||')"
    local filter=(jq '.[] | select(.wm_class as $in | ['$choices'] | index($in)) | .id')
    
    gdbus call --session \
        --dest org.gnome.Shell \
        --object-path /org/gnome/Shell/Extensions/Windows \
        --method org.gnome.Shell.Extensions.Windows.Activate \
        $(dbus-send --session \
            --dest=org.gnome.Shell \
            --print-reply=literal \
            /org/gnome/Shell/Extensions/Windows \
            org.gnome.Shell.Extensions.Windows.List \
            | "${filter[@]}" \
            | "${strategy[@]}")
}


case ${1} in
    activate)
        shift
        wm_activate $@
        ;;
    request)
        shift
        wm_request $@
        ;;

    *)
        fn="wm_$1"
        shift
        eval "$fn" $@
        ;;
esac