var worker;
var title;
var palette;
var font;
var textArtCanvas;
var cursor;
var selectionCursor;
var positionInfo;
var toolPreview;
var pasteTool;
var chat;
var sampleTool;

function $(divName) {
    "use strict";
    return document.getElementById(divName);
}

function createCanvas(width, height) {
    "use strict";
    var canvas = document.createElement("CANVAS");
    canvas.width = width;
    canvas.height = height;
    return canvas;
}

document.addEventListener("DOMContentLoaded", () => {
    "use strict";
    pasteTool = createPasteTool($("cut"), $("copy"), $("paste"), $("delete"));
    positionInfo = createPositionInfo($("position-info"));
    textArtCanvas = createTextArtCanvas($("canvas-container"), () => {
        selectionCursor = createSelectionCursor($("canvas-container"));
        cursor = createCursor($("canvas-container"));
        document.addEventListener("keydown", undoAndRedo);
        onClick($("new"), () => {
            if (confirm("All changes will be lost. Are you sure?") === true) {
                textArtCanvas.clear();
                $("sauce-title").value = "";
                $("sauce-group").value = "";
                $("sauce-author").value = "";
            }
        });
        onClick($("open"), () => {
            showOverlay($("open-overlay"));
        });
        onClick($("save-ansi"), Save.ans);
        onClick($("save-utf8"), Save.utf8);
        onClick($("save-bin"), Save.bin);
        onClick($("save-xbin"), Save.xb);
        onClick($("save-png"), Save.png);
        onClick($("cut"), pasteTool.cut);
        onClick($("copy"), pasteTool.copy);
        onClick($("paste"), pasteTool.paste);
        onClick($("delete"), pasteTool.deleteSelection);
        var palettePreview = createPalettePreview($("palette-preview"));
        var palettePicker = createPalettePicker($("palette-picker"));
        var iceColoursToggle = createSettingToggle($("ice-colors-toggle"), textArtCanvas.getIceColours, textArtCanvas.setIceColours);
        var letterSpacingToggle = createSettingToggle($("letter-spacing-toggle"), () => {
            return font.getLetterSpacing();
        }, (newLetterSpacing) => {
            font.setLetterSpacing(newLetterSpacing);
        });
        onFileChange($("open-file"), (file) => {
            Load.file(file, (columns, rows, imageData, iceColours, letterSpacing) => {
                var indexOfPeriod = file.name.lastIndexOf(".");
                if (indexOfPeriod !== -1) {
                    title.setName(file.name.substr(0, indexOfPeriod));
                } else {
                    title.setName(file.name);
                }
                textArtCanvas.setImageData(columns, rows, imageData, iceColours, letterSpacing);
                iceColoursToggle.update();
                letterSpacingToggle.update();
                hideOverlay($("open-overlay"));
                $("open-file").value = "";
            });
        });
        onClick($("open-cancel"), () => {
            hideOverlay($("open-overlay"));
        });
        onClick($("edit-sauce"), () => {
            showOverlay($("sauce-overlay"));
            keyboard.ignore();
            paintShortcuts.ignore();
            $("sauce-title").focus();
            freestyle.ignore();
            characterBrush.ignore();
        });
        onClick($("sauce-done"), () => {
            hideOverlay($("sauce-overlay"));
            keyboard.unignore();
            paintShortcuts.unignore();
            freestyle.unignore();
            characterBrush.unignore();
        });
        onReturn($("sauce-title"), $("sauce-done"));
        onReturn($("sauce-group"), $("sauce-done"));
        onReturn($("sauce-author"), $("sauce-done"));
        var paintShortcuts = createPaintShortcuts({
            "D": $("default-colour"),
            "Q": $("swap-colours"),
            "K": $("keyboard"),
            "F": $("freestyle"),
            "B": $("character-brush"),
            "N": $("fill"),
            "G": $("grid-toggle")
        });
        var keyboard = createKeyboardController();
        Toolbar.add($("keyboard"), () => {
            paintShortcuts.disable();
            keyboard.enable();
        }, () => {
            paintShortcuts.enable();
            keyboard.disable();
        }).enable();
        title = createTitleHandler($("artwork-title"), () => {
            keyboard.ignore();
            paintShortcuts.ignore();
            freestyle.ignore();
            characterBrush.ignore();
        }, () => {
            keyboard.unignore();
            paintShortcuts.unignore();
            freestyle.unignore();
            characterBrush.unignore();
        });
        onClick($("undo"), textArtCanvas.undo);
        onClick($("redo"), textArtCanvas.redo);
        onClick($("resize"), () => {
            showOverlay($("resize-overlay"));
            $("columns-input").value = textArtCanvas.getColumns();
            $("rows-input").value = textArtCanvas.getRows();
            keyboard.ignore();
            paintShortcuts.ignore();
            freestyle.ignore();
            characterBrush.ignore();
            $("columns-input").focus();
        });
        onClick($("resize-apply"), () => {
            var columnsValue = parseInt($("columns-input").value, 10);
            var rowsValue = parseInt($("rows-input").value, 10);
            if (!isNaN(columnsValue) && !isNaN(rowsValue)) {
                textArtCanvas.resize(columnsValue, rowsValue);
                hideOverlay($("resize-overlay"));
            }
            keyboard.unignore();
            paintShortcuts.unignore();
            freestyle.unignore();
            characterBrush.unignore();
        });
        onReturn($("columns-input"), $("resize-apply"));
        onReturn($("rows-input"), $("resize-apply"));
        onClick($("resize-cancel"), () => {
            hideOverlay($("resize-overlay"));
            keyboard.unignore();
            paintShortcuts.unignore();
            freestyle.unignore();
            characterBrush.unignore();
        });
        onClick($("default-colour"), () => {
            palette.setForegroundColour(7);
            palette.setBackgroundColour(0);
        });
        onClick($("swap-colours"), () => {
            var tempForeground = palette.getForegroundColour();
            palette.setForegroundColour(palette.getBackgroundColour());
            palette.setBackgroundColour(tempForeground);
        });
        onClick($("fonts"), () => {
            showOverlay($("fonts-overlay"));
        });
        onSelectChange($("font-select"), () => {
            textArtCanvas.setFont($("font-select").value, () => {
                hideOverlay($("fonts-overlay"));
            });
        });
        onClick($("fonts-cancel"), () => {
            hideOverlay($("fonts-overlay"));
        });
        var grid = createGrid($("grid"));
        var gridToggle = createSettingToggle($("grid-toggle"), grid.isShown, grid.show);
        var freestyle = createFreehandController(createShadingPanel());
        Toolbar.add($("freestyle"), freestyle.enable, freestyle.disable);
        var characterBrush = createFreehandController(createCharacterBrushPanel());
        Toolbar.add($("character-brush"), characterBrush.enable, characterBrush.disable);
        var fill = createFillController();
        Toolbar.add($("fill"), fill.enable, fill.disable);
        var line = createLineController();
        Toolbar.add($("line"), line.enable, line.disable);
        var square = createSquareController();
        Toolbar.add($("square"), square.enable, square.disable);
        var circle = createCircleController();
        Toolbar.add($("circle"), circle.enable, circle.disable);
        toolPreview = createToolPreview($("tool-preview"));
        var selection = createSelectionTool($("canvas-container"));
        Toolbar.add($("selection"), selection.enable, selection.disable);
        chat = createChatController($("chat-button"), $("chat-window"), $("message-window"), $("user-list"), $("handle-input"), $("message-input"), $("notification-checkbox"),() => {
            keyboard.ignore();
            paintShortcuts.ignore();
            freestyle.ignore();
            characterBrush.ignore();
        }, () => {
            keyboard.unignore();
            paintShortcuts.unignore();
            freestyle.unignore();
            characterBrush.unignore();
        });
        var chatToggle = createSettingToggle($("chat-toggle"), chat.isEnabled, chat.toggle);
        onClick($("chat-button"), chat.toggle);
        sampleTool = createSampleTool($("sample"), freestyle, $("freestyle"), characterBrush, $("character-brush"));
        Toolbar.add($("sample"), sampleTool.enable, sampleTool.disable);
        worker = createWorkerHandler($("handle-input"));
    });
});