/*
Description: DOM Management and HTML builder
Date:        2025//3/6
Creator:     Clemens Schwaighofer
*/

export {
	HtmlElementCreator,
	// deprecated name
	HtmlElementCreator as DomManagement
};
import { deepCopyFunction, isObject } from './JavaScriptHelpers.mjs';

class HtmlElementCreator {
	/**
	 * reates object for DOM element creation flow
	 * @param  {String} tag          must set tag (div, span, etc)
	 * @param  {String} [id='']      optional set for id, if input, select will be used for name
	 * @param  {String} [content=''] text content inside, is skipped if sub elements exist
	 * @param  {Array}  [css=[]]     array for css tags
	 * @param  {Object} [options={}] anything else (value, placeholder, OnClick, style)
	 * @return {Object}              created element as an object
	 */
	cel(tag, id = '', content = '', css = [], options = {})
	{
		return {
			tag: tag,
			id: id,
			// override name if set, else id is used. Only for input/button
			name: options.name,
			content: content,
			css: css,
			options: options,
			sub: []
		};
	}

	/**
	 * attach a cel created object to another to create a basic DOM tree
	 * @param  {Object} base    object where to attach/search
	 * @param  {Object} attach  the object to be attached
	 * @param  {String} [id=''] optional id, if given search in base for this id and attach there
	 * @return {Object}         "none", technically there is no return needed as it is global attach
	 */
	ael(base, attach, id = '')
	{
		if (id) {
			// base id match already
			if (base.id == id) {
				base.sub.push(deepCopyFunction(attach));
			} else {
				// sub check
				if (isObject(base.sub) && base.sub.length > 0) {
					for (var i = 0; i < base.sub.length; i ++) {
						// recursive call to sub element
						this.ael(base.sub[i], attach, id);
					}
				}
			}
		} else {
			base.sub.push(deepCopyFunction(attach));
		}
		return base;
	}

	/**
	 * directly attach n elements to one master base element
	 * this type does not support attach with optional id
	 * @param  {Object}    base   object to where we attach the elements
	 * @param  {...Object} attach attach 1..n: attach directly to the base element those attachments
	 * @return {Object}           "none", technically there is no return needed, global attach
	 */
	aelx(base, ...attach)
	{
		for (var i = 0; i < attach.length; i ++) {
			base.sub.push(deepCopyFunction(attach[i]));
		}
		return base;
	}

	/**
	 * same as aelx, but instead of using objects as parameters
	 * get an array of objects to attach
	 * @param  {Object} base   object to where we attach the elements
	 * @param  {Array}  attach array of objects to attach
	 * @return {Object}        "none", technically there is no return needed, global attach
	 */
	aelxar(base, attach)
	{
		for (var i = 0; i < attach.length; i ++) {
			base.sub.push(deepCopyFunction(attach[i]));
		}
		return base;
	}

	/**
	 * resets the sub elements of the base element given
	 * @param  {Object} base cel created element
	 * @return {Object}      returns reset base element
	 */
	rel(base)
	{
		base.sub = [];
		return base;
	}

	/**
	 * searches and removes style from css array
	 * @param  {Object} _element element to work one
	 * @param  {String} css      style sheet to remove (name)
	 * @return {Object}          returns full element
	 */
	rcssel(_element, css)
	{
		var css_index = _element.css.indexOf(css);
		if (css_index > -1) {
			_element.css.splice(css_index, 1);
		}
		return _element;
	}

	/**
	 * adds a new style sheet to the element given
	 * @param  {Object} _element element to work on
	 * @param  {String} css      style sheet to add (name)
	 * @return {Object}         returns full element
	 */
	acssel(_element, css)
	{
		var css_index = _element.css.indexOf(css);
		if (css_index == -1) {
			_element.css.push(css);
		}
		return _element;
	}

	/**
	 * removes one css and adds another
	 * is a wrapper around rcssel/acssel
	 * @param  {Object} _element element to work on
	 * @param  {String} rcss     style to remove (name)
	 * @param  {String} acss     style to add (name)
	 * @return {Object}          returns full element
	 */
	scssel(_element, rcss, acss)
	{
		this.rcssel(_element, rcss);
		this.acssel(_element, acss);
		return _element;
	}

	/**
	 * parses the object tree created with cel/ael and converts it into an HTML string
	 * that can be inserted into the page
	 * @param  {Object} tree object tree with dom element declarations
	 * @return {String}      HTML string that can be used as innerHTML
	 */
	phfo(tree)
	{
		let name_elements = [
			'button',
			'fieldset',
			'form',
			'iframe',
			'input',
			'map',
			'meta',
			'object',
			'output',
			'param',
			'select',
			'textarea',
		];
		let skip_options = [
			'id',
			'name',
			'class',
		];
		let no_close = [
			'input',
			'br',
			'img',
			'hr',
			'area',
			'col',
			'keygen',
			'wbr',
			'track',
			'source',
			'param',
			'command',
			// only in header
			'base',
			'meta',
			'link',
			'embed',
		];
		// holds the elements
		var content = [];
		// main part line
		var line = '<' + tree.tag;
		var i;
		// first id, if set
		if (tree.id) {
			line += ' id="' + tree.id + '"';
			// if anything input (input, textarea, select then add name too)
			if (name_elements.includes(tree.tag)) {
				line += ' name="' + (tree.name ? tree.name : tree.id) + '"';
			}
		}
		// second CSS
		if (isObject(tree.css) && tree.css.length > 0) {
			line += ' class="';
			for (i = 0; i < tree.css.length; i ++) {
				line += tree.css[i] + ' ';
			}
			// strip last space
			line = line.slice(0, -1);
			line += '"';
		}
		// options is anything key = "data"
		if (isObject(tree.options)) {
			// ignores id, name, class as key
			for (const [key, item] of Object.entries(tree.options)) {
				if (!skip_options.includes(key)) {
					line += ' ' + key + '="' + item + '"';
				}
			}
		}
		// finish open tag
		line += '>';
		// push finished line
		content.push(line);
		// dive into sub tree to attach sub nodes
		// NOTES: we can have content (text) AND sub nodes at the same level
		// CONTENT (TEXT) takes preference over SUB NODE in order
		if (isObject(tree.sub) && tree.sub.length > 0) {
			if (tree.content) {
				content.push(tree.content);
			}
			for (i = 0; i < tree.sub.length; i ++) {
				content.push(this.phfo(tree.sub[i]));
			}
		} else if (tree.content) {
			content.push(tree.content);
		}
		// if not input, image or br, then close
		if (
			!no_close.includes(tree.tag)
		) {
			content.push('</' + tree.tag + '>');
		}
		// combine to string
		return content.join('');
	}

	/**
	 * Create HTML elements from array list
	 * as a flat element without master object file
	 * Is like tree.sub call
	 * @param  {Array}  list Array of cel created objects
	 * @return {String}      HTML String
	 */
	phfa(list)
	{
		var content = [];
		for (var i = 0; i < list.length; i ++) {
			content.push(this.phfo(list[i]));
		}
		return content.join('');
	}
}

// __EMD__