import {createModuleLogger} from "./LoggerUtils.js";
import { withErrorHandling, createValidationError } from "../ErrorHandler.js";
import type { Canvas } from '../Canvas.js';
// @ts-ignore
import {ComfyApp} from "../../../scripts/app.js";

const log = createModuleLogger('MaskUtils');

export function new_editor(app: ComfyApp): boolean {
    if (!app) return false;
    return !!app.ui.settings.getSettingValue('Comfy.MaskEditor.UseNewEditor');
}

function get_mask_editor_element(app: ComfyApp): HTMLElement | null {
    return new_editor(app) ? document.getElementById('maskEditor') : document.getElementById('maskCanvas')?.parentElement ?? null;
}

export function mask_editor_showing(app: ComfyApp): boolean {
    const editor = get_mask_editor_element(app);
    return !!editor && editor.style.display !== "none";
}

export function hide_mask_editor(app: ComfyApp): void {
    if (mask_editor_showing(app)) {
        const editor = document.getElementById('maskEditor');
        if (editor) {
            editor.style.display = 'none';
        }
    }
}

function get_mask_editor_cancel_button(app: ComfyApp): HTMLElement | null {
    const cancelButton = document.getElementById("maskEditor_topBarCancelButton");
    if (cancelButton) {
        log.debug("Found cancel button by ID: maskEditor_topBarCancelButton");
        return cancelButton;
    }

    const cancelSelectors = [
        'button[onclick*="cancel"]',
        'button[onclick*="Cancel"]',
        'input[value="Cancel"]'
    ];

    for (const selector of cancelSelectors) {
        try {
            const button = document.querySelector<HTMLElement>(selector);
            if (button) {
                log.debug("Found cancel button with selector:", selector);
                return button;
            }
        } catch (e) {
            log.warn("Invalid selector:", selector, e);
        }
    }

    const allButtons = document.querySelectorAll('button, input[type="button"]');
    for (const button of allButtons) {
        const text = (button as HTMLElement).textContent || (button as HTMLInputElement).value || '';
        if (text.toLowerCase().includes('cancel')) {
            log.debug("Found cancel button by text content:", text);
            return button as HTMLElement;
        }
    }

    const editorElement = get_mask_editor_element(app);
    if (editorElement) {
        const childNodes = editorElement?.parentElement?.lastChild?.childNodes;
        if (childNodes && childNodes.length > 2 && childNodes[2] instanceof HTMLElement) {
            return childNodes[2];
        }
    }

    return null;
}

function get_mask_editor_save_button(app: ComfyApp): HTMLElement | null {
    const saveButton = document.getElementById("maskEditor_topBarSaveButton");
    if (saveButton) {
        return saveButton;
    }
    const editorElement = get_mask_editor_element(app);
    if (editorElement) {
        const childNodes = editorElement?.parentElement?.lastChild?.childNodes;
        if (childNodes && childNodes.length > 2 && childNodes[2] instanceof HTMLElement) {
            return childNodes[2];
        }
    }
    return null;
}

export function mask_editor_listen_for_cancel(app: ComfyApp, callback: () => void): void {
    let attempts = 0;
    const maxAttempts = 50; // 5 sekund

    const findAndAttachListener = () => {
        attempts++;
        const cancel_button = get_mask_editor_cancel_button(app);

        if (cancel_button instanceof HTMLElement && !(cancel_button as any).filter_listener_added) {
            log.info("Cancel button found, attaching listener");
            cancel_button.addEventListener('click', callback);
            (cancel_button as any).filter_listener_added = true;
        } else if (attempts < maxAttempts) {

            setTimeout(findAndAttachListener, 100);
        } else {
            log.warn("Could not find cancel button after", maxAttempts, "attempts");

            const globalClickHandler = (event: MouseEvent) => {
                const target = event.target as HTMLElement;
                const text = target.textContent || (target as HTMLInputElement).value || '';
                if (target && (text.toLowerCase().includes('cancel') ||
                    target.id.toLowerCase().includes('cancel') ||
                    target.className.toLowerCase().includes('cancel'))) {
                    log.info("Cancel detected via global click handler");
                    callback();
                    document.removeEventListener('click', globalClickHandler);
                }
            };

            document.addEventListener('click', globalClickHandler);
            log.debug("Added global click handler for cancel detection");
        }
    };

    findAndAttachListener();
}

export function press_maskeditor_save(app: ComfyApp): void {
    const button = get_mask_editor_save_button(app);
    if (button instanceof HTMLElement) {
        button.click();
    }
}

export function press_maskeditor_cancel(app: ComfyApp): void {
    const button = get_mask_editor_cancel_button(app);
    if (button instanceof HTMLElement) {
        button.click();
    }
}

/**
 * Uruchamia mask editor z predefiniowaną maską
 * @param {Canvas} canvasInstance - Instancja Canvas
 * @param {HTMLImageElement | HTMLCanvasElement} maskImage - Obraz maski do nałożenia
 * @param {boolean} sendCleanImage - Czy wysłać czysty obraz (bez istniejącej maski)
 */
export const start_mask_editor_with_predefined_mask = withErrorHandling(function(canvasInstance: Canvas, maskImage: HTMLImageElement | HTMLCanvasElement, sendCleanImage = true): void {
    if (!canvasInstance) {
        throw createValidationError('Canvas instance is required', { canvasInstance });
    }
    if (!maskImage) {
        throw createValidationError('Mask image is required', { maskImage });
    }

    canvasInstance.startMaskEditor(maskImage, sendCleanImage);
}, 'start_mask_editor_with_predefined_mask');

/**
 * Uruchamia mask editor z automatycznym zachowaniem (czysty obraz + istniejąca maska)
 * @param {Canvas} canvasInstance - Instancja Canvas
 */
export const start_mask_editor_auto = withErrorHandling(function(canvasInstance: Canvas): void {
    if (!canvasInstance) {
        throw createValidationError('Canvas instance is required', { canvasInstance });
    }
    canvasInstance.startMaskEditor(null, true);
}, 'start_mask_editor_auto');

// Duplikowane funkcje zostały przeniesione do ImageUtils.ts:
// - create_mask_from_image_src -> createMaskFromImageSrc
// - canvas_to_mask_image -> canvasToMaskImage