/// <reference path="D:\Development\foo_spider_monkey_panel-master\component\docs\js\foo_spider_monkey_panel.js">

window.DefinePanel("GetNextArts", { author: "ZedZagg" });
include(`${fb.ComponentPath}docs\\Flags.js`);
include(`${fb.ComponentPath}docs\\Helpers.js`);

// Nothing will show until you start playing a new track

let g_img = null;
let g_img2 = null;
let g_img3 = null;
let g_img4 = null;
let ww = 0, wh = 0, spacing = 2, dimension = 100;
let imgCount = 0;
let handles = null;
let index = 0;

function on_paint(gr) {
    gr.FillSolidRect(0, 0, ww, wh, RGB(255, 255, 255));

    drawArt(0,g_img,gr);
    if(imgCount == 1)
        return;

    drawArt(dimension + spacing,g_img2,gr);
    if(imgCount == 2)
        return;

    drawArt(2*dimension + 2*spacing,g_img3,gr);
    if(imgCount == 3)
        return;

    drawArt(3*dimension + 3*spacing,g_img4,gr);

}

function drawArt(xPos,img,gr){
    if(!img){
        gr.FillSolidRect(xPos, 0, dimension, dimension, RGB(16, 16, 16));
        gr.DrawLine(xPos, dimension, xPos + dimension, 0, 3, RGB(255, 255, 255))
    }
    else{
        gr.DrawImage(img, xPos, 0, dimension, dimension, 0, 0, img.Width, img.Height);
    }
}

function on_size() {
    ww = window.Width;
    wh = window.Height;

    let len = (ww - 3 * spacing)/4;
    if(len<wh)
        dimension = len;
    else
        dimension = wh;
}

function on_playback_new_track(metadb) {
    getArt();
}

function getArt(){
    handles = plman.GetPlaylistItems(plman.PlayingPlaylist);

    let playing_item_location = plman.GetPlayingItemLocation();
    index = playing_item_location.PlaylistItemIndex;

    imgCount = handles.Count - index;

    if (imgCount == 0){
        return;
     }

        g_img = utils.GetAlbumArtV2(handles[index], AlbumArtId.front);
        if (imgCount > 1){
            g_img2 = utils.GetAlbumArtV2(handles[index+1], AlbumArtId.front);
        }
        if (imgCount > 2){
            g_img3 = utils.GetAlbumArtV2(handles[index+2], AlbumArtId.front);
        }
        if (imgCount > 3){
            g_img4 = utils.GetAlbumArtV2(handles[index+3], AlbumArtId.front);
        }

    window.Repaint();
}