/**
 * This file is part of the jps-like-websites lib
 * URL: https://git.labos.goip.de/chris/jpc-like-websites
 * @copyright by its creator Christian Martin 
 */


/**
 * Represents the most basic and simple form of a Component.
 * It is mainly a collection of wrapper methods 
 * around the HTMLElement methods to make them chainable.
 * It serves as base for further functionallity extensions.
 * @property {Map<string, SStoreDefinition>} _style
 */
class Component extends StyleAndScriptStoringComponent {
    /**
     * @type {boolean}
     */
    #isCompel;
    /**
     * @type {WebTrinity}
     */
    _wenity;
    /**
     * @type {Array<any>}
     */
    _toRegister;
    /**
     * @type {boolean} 
     */
    _isContextMenu;


    /**
     * Initializes the component
     * @param {HTMLElement} element the base element
     * @param {Map<string,string>} attr Specific already known attributes
     */
    constructor(element, attr = {}) {
        super(element, attr);
        this.#isCompel = false;
        this._isContextMenu = false;

        this._modifier = new Modifier()
            .margin(new Sides().all(0));
        this._modifier._modifications['display'] = "flex";

        this._toRegister = [];
    }

    /**
     * Adds a class to classList via HTMLElement.classList.add() method.
     * Further collects rules in a property until generate is called.
     * 
     * @CAUGHTION implementation is not safe to use, ignoring extStore is recommended;
     * 
     * @todo difference between stylings and classes, extStore logic in combination with the Page.register... logic
     * 
     * @override
     * 
     * @param {string} styleClass (without the '.' in the front)
     * @param {string|Modifier|map<string,string>} styling
     * @param {ExtStorage|ExtStoreType|ExtStorePosition|OverwriteBehaviour|EXPosConfer|ESOverwriteConfer} extStore 
     * if a unique definition is desired, all constants or configurator objects are allowed - they will be processed accordingly 
     * @returns {Component} this component object
     */
    addStyleClass(styleClass, styling = null, extStore = null) {
        if (!extStore) {
            extStore = this._styleClassesExtStore;
        } else if (extStore.isMissing()) {
            extStore = extStore.fillBy(this._styleClassesExtStore);
        }

        if (styling) {
            if (styling instanceof Modifier) {
                styling = styling._modifications;
            }

            Page.registerStyling('.' + styleClass, styling);
        }

        this._element.classList.add(styleClass);

        return this;
    }

    /**
     * 
     * @returns {Component}
     */
    isHigherComponent() {
        this.#isCompel = true;
        return this.setAttribute("data-compel-isHCompel", "true")
    }

    /**
     * Collects the given List in the _toRegister attribute.
     * When generate() is called, 
     * the created Element will be registered (added) in every list 
     * within the list. 
     * @param {Array} listName 
     */
    subscribeOnGenerate(listName) {
        this._toRegister.push(listName);
        return this;
    }


    /**
     * Defines how a child Component is to be appended.
     * @param {Component} component the child component to add it.
     * @returns {HTMLElement}
     */
    _appendChildComponent(component) {
        let child = new WebTrinity();
        if (component instanceof Component) {
            child = component.generate();
        }

        if (component instanceof WebTrinity) {
            child = component;
        }

        if (component instanceof HTMLElement) {
            console.log("No wenity set - htmlEl was given");
            child.html = component;
        }

        this._element.append(child.html);

        return child;
    }


    _processStyles(extStore = null) {
        if (!extStore) {
            extStore = this._stylesExtStore.updateForGeneralStyling();
        } else {
            extStore.updateForGeneralStyling();
        }

        /**
         * @todo very likely code dupplication - but kept for the time being
         *          for error tracking. 
         */
        if (extStore._type === ExtStoreType.INTERNALIZED_WITHIN) {
            fillAttrsInContainerByCb(
                this._modifier._modifications,
                this._element,
                (key, val, el) => { el.style[key] = val; }
            );
        } else {
            /* ADDS ELEMENT MODIFIER TO this._styles list for styles processing */
            let modifierSSD = new SStoreDefinition();
            modifierSSD._identifier = this._compName;
            modifierSSD._definition = this._modifier._modifications;
            modifierSSD._extStore = extStore;
            this._styles.unshift(modifierSSD);
        }

        let forCollection = [];

        let counter = 0;
        for (let i = 0; i < this._styles.length; i++) {
            const ssd = this._styles[i];
            /* Make sure that the type is unified for later processing */
            if (ssd._definition instanceof Modifier) {
                ssd._definition = ssd._definition._modifications;
            }

            /* Check/Ensure proper ExtStorageType for following comparison */
            let refESType = (
                ssd._extStore && ssd._extStore._type
                    ? ssd._extStore.updateForGeneralStyling()._type
                    : extStore._type
            );

            switch (refESType) {

                case ExtStoreType.INTERNALIZED_WITHIN:
                    fillAttrsInContainerByCb(
                        ssd._definition,
                        this._element,
                        (key, val, el) => { el.style[key] = val; }
                    )
                    break;

                case ExtStoreType.INDIVIDUALLY_DOC_HEAD:

                    let container = document.createElement("style");
                    container.setAttribute("data-compel-individually-nr", counter++);

                    let styleRules = Object.keys(ssd._definition);

                    for (let j = 0; j < styleRules.length; j++) {
                        let rule = styleRules[j];
                        container.innerText += `${rule} {${ssd._definition[rule]} } `;
                    }
                    Page.addElementToPage(container, refESType);
                    break;

                case ExtStoreType.COLLECTED_DOC_HEAD:
                    forCollection.push(ssd);
                    break;

                case ExtStoreType.CENTRALIZED_DOC_HEAD:
                    Page.registerStyling(ssd._identifier, ssd._definition);
                    break;
            }
        }

        return forCollection;
    }


    _processFunctions(extStore = null) {
        if (!extStore) {
            extStore = this._functionsExtStore.updateForFunctions();
        } else {
            extStore.updateForFunctions();
        }

        const forCollection = new Map();
        const collectForBefore = [];

        let counter = 0;
        for (let i = 0; i < this._functions.length; i++) {
            const ssd = this._functions[i];
            /* Make sure that the type is unified for later processing */

            let refESType = (
                ssd._extStore && ssd._extStore._type
                    ? ssd._extStore.updateForFunctions()._type
                    : extStore._type
            );

            switch (refESType) {
                case ExtStoreType.CENTRALIZED_DOC_HEAD:
                case ExtStoreType.CENTRALIZED_SEGMENT_BEGIN:
                case ExtStoreType.CENTRALIZED_DOC_FOOTER:
                    Page.registerPageFunction(ssd._identifier, ssd._definition);
                    break;

                case ExtStoreType.INDIVIDUALLY_WITHIN:
                case ExtStoreType.INDIVIDUALLY_BEFORE:
                case ExtStoreType.INDIVIDUALLY_SEGMENT_BEGIN:
                case ExtStoreType.INDIVIDUALLY_DOC_FOOTER:
                case ExtStoreType.INDIVIDUALLY_DOC_HEAD:

                    let container = document.createElement("script");
                    container.setAttribute("data-compel-individually-nr", counter++);
                    container.innerText += getScriptTagInjectionText(
                        clearFunctionDeclarationText(ssd._definition),
                        ssd._identifier
                    );
                    Page.addElementToPage(container, refESType, this._element);

                    break;

                case ExtStoreType.COLLECTED_BEFORE:
                    collectForBefore.push(ssd);
                    break;

                case ExtStoreType.COLLECTED_SEGMENT_BEGIN:
                case ExtStoreType.COLLECTED_DOC_FOOTER:
                case ExtStoreType.COLLECTED_DOC_HEAD:
                    if (!forCollection.has(refESType)) {
                        forCollection.set(refESType, []);
                    }
                    forCollection.get(refESType).push(ssd);
                    break;
            }
        }

        return forCollection;
    }

    /**
     * Ends chain. 
     * Applies all modifications on the element.
     * Processes alls stored additions.
     * Returns the constructed HTMLElement of this Component.
     *
     * 
     * 
     * @param {ExtStorage} 
     * @returns {WebTrinity} the constructed HTMLElement of this Component.
     */
    generate(styleStore = null, functionStore = null) {
        this._wenity = new WebTrinity();

        /* DEAL WITH COMPONENT MODIFICATION FIRST */
        this._modifier._modifications["justify-content"] = this._arrangement;
        this._modifier._modifications["align-content"] = this._alignment;
        this._modifier._modifications["align-items"] = this._alignment;
        this._modifier._modifications["text-align"] = this._alignment;


        let collectedWenities = [];

        for (let i = 0; i < this._children.length; i++) {
            /**
             * @type {Component}
             */
            let child = this._children[i];

            if (child instanceof ChainableModifier) {
                child = child.toComponent();
            }

            child._modifier._updateDimensionsBy(this._modifier._paddingValues);
            child = child.generate();

            let wenity = this._appendChildComponent(child);

            if (!wenity.isSSEmpty()) {
                collectedWenities.push(wenity);
            }
        }



        let styleCollection = this._processStyles(styleStore);

        /* dealing with being the "collecting" one or not
        
        if (this.#isCompel) {
            
            let collectedContainer = document.createElement("style");
            collectedContainer.setAttribute("data-compel-collected", counter);
            Page.addElementToPage(collectedContainer, extStore, this._element);

        }else{
            this._wenity.css = stylesForCollection;
        }
        */

        /**
         * @type {Map<ExtStoreType, Array<SStoreDefinition>>}
         */
        const funcCollections = this._processFunctions(functionStore);

        if (this.#isCompel) {
            funcCollections.get(ExtStoreType.COLLECTED_DOC_FOOTER)
            funcCollections.get(ExtStoreType.COLLECTED_DOC_HEAD)
            funcCollections.get(ExtStoreType.COLLECTED_SEGMENT_BEGIN)
        } else {
            this._wenity.js = funcCollections;
            this._wenity.css = styleCollection;
        }

        this._wenity.html = this._element;

        return this._wenity;
    }


}