class TableHeader {
    constructor(columns) {
        this.columns = columns;
    }

    render() {
        const tr = document.createElement('tr');
        const colgroup = document.createElement('colgroup');
        this.columns.forEach((column) => {
            const th = document.createElement('th');
            const col = document.createElement('col');
            th.setAttribute('data-column', column.column);
            col.setAttribute('data-column', column.column);
            th.innerHTML = column.label;
            tr.appendChild(th);
            colgroup.appendChild(col);
        });
        const thead = document.createElement('thead');
        thead.appendChild(tr);

        return {colgroup : colgroup, thead : thead };
    }
}

class ActionSet {

    arrowDown = '<i class="fa fa-arrow-down" aria-hidden="true"></i>';

    constructor(actions, element = 'button', value = null) {
        this.actions = actions;
        this.element = element;
        this.value = value;
    }

    render() {
        if (this.element == 'button') {
            return this.renderButton();
        }

        if (this.element == 'span') {
            return this.renderSpan();
        }
    }

    renderButton() {
        this.actionButton = document.createElement('a');
        this.actionButton.classList.add('btn', 'btn-outline-secondary');
        this.actionButton.innerHTML = `<i class="fa fa-${this.actions[0].icon}" aria-hidden="true"></i> ${this.actions[0].label}`;
        this.actionButton.href = this.actions[0].route.replace('{{id}}', this.value);

        if (this.actions.length == 1) {
            return { 'button': this.actionButton, 'toggle': null, 'list': null };
        }

        this.actionToggle = document.createElement('button');
        this.actionToggle.classList.add('btn', 'btn-outline-secondary', 'dropdown-toggle-split');
        this.actionToggle.innerHTML = this.arrowDown;
        this.actionToggle.setAttribute('data-bs-toggle', 'dropdown');

        this.actionList = document.createElement('ul');
        this.actionList.classList.add('dropdown-menu');

        this.actions.forEach((action) => {
            const actionHolder = document.createElement('li');
            const actionLink = document.createElement('a');
            actionLink.classList.add('dropdown-item');
            actionLink.href = action.route.replace('{{id}}', this.value);
            actionLink.innerHTML = `<i class="fa fa-${action.icon}" aria-hidden="true"></i> ${action.label}`;

            actionHolder.appendChild(actionLink);
            this.actionList.appendChild(actionHolder);
        });

        return {
            'button': this.actionButton,
            'toggle': this.actionToggle,
            'list': this.actionList
        };
    }

    renderSpan() {
        this.actionButton = document.createElement('div');

        this.actionToggle = document.createElement('span');
        this.actionToggle.setAttribute('data-bs-toggle', 'dropdown');
        this.actionToggle.innerHTML = `#${this.value} ${this.arrowDown}`;

        this.actionList = document.createElement('ul');
        this.actionList.classList.add('dropdown-menu');

        this.actions.forEach((action) => {
            const actionHolder = document.createElement('li');
            if(action.type == 'divider'){
                const actionDivider = document.createElement('hr');
                actionDivider.classList.add('dropdown-divider');
                this.actionList.appendChild(actionDivider);
                return;
            }
            const actionLink = document.createElement('a');
            actionLink.classList.add('dropdown-item');
            actionLink.href = action.route.replace('{{id}}', this.value);
            actionLink.innerHTML = `<i class="fa fa-${action.icon}" aria-hidden="true"></i> ${action.label}`;

            actionHolder.appendChild(actionLink);
            this.actionList.appendChild(actionHolder);
        });

        this.actionButton.appendChild(this.actionToggle);
        this.actionButton.appendChild(this.actionList);

        return this.actionButton;
    }

    renderLabel(label, icon){
        if(icon){
            return `<i class="fa fa-${icon}" aria-hidden="true"></i> ${label}`
        }
        return label
    }

}

class TableBody {
    constructor(rows, columns, rowActions, options) {
        this.rows = rows;
        this.columns = columns;
        this.rowActions = rowActions;
        this.options = options;
    }

    render() {
        if(this.options.selectable){
            return this.renderSelectable();
        }
        return this.renderDefaultTable();
    }

    renderDefaultTable(){
        const tbody = document.createElement('tbody');

        this.rows.forEach((row) => {
            const tr = document.createElement('tr');

            this.columns.forEach((column) => {
                const td = document.createElement('td');
                td.setAttribute('data-name', column.column);
                td.setAttribute('data-value', row[column.column]);

                if (column.column == 'id') {
                    tr.setAttribute('data-value', row[column.column]);
                    const idColumn = new ActionSet(this.rowActions, 'span', row[column.column]);
                    td.appendChild(idColumn.render());
                } else {
                    td.innerHTML = row[column.column];
                }

                tr.appendChild(td);
            });

            tbody.appendChild(tr);

        });
        return tbody;
    }

    renderSelectable(){
        const tbody = document.createElement('tbody');

        this.rows.forEach((row) => {
            const tr = document.createElement('tr');

            this.columns.forEach((column) => {
                const td = document.createElement('td');
                td.setAttribute('data-name', column.column);
                td.setAttribute('data-value', row[column.column]);

                if (column.column == 'id') {
                    tr.setAttribute('data-value', row[column.column]);
                    const idColumn = document.createElement('button');

                    let payload = {'element': row, ...this.options.selectable.callbackParameters};

                    idColumn.addEventListener('click', this.options.selectable.select.bind(null, payload));
                    idColumn.classList.add('btn', 'btn-danger', 'btn-block');
                    idColumn.style = "padding: 0.1rem 0.5em;";
                    idColumn.innerHTML = 'Selecionar';
                    td.appendChild(idColumn);
                } else {
                    td.innerHTML = row[column.column];
                }

                tr.appendChild(td);
            });

            tbody.appendChild(tr);

        });
        return tbody;
    }
}

class Buttons {
    constructor(currentPage, totalPages, maxButtons, onPageChange, replicateChanges) {
        this.currentPage = currentPage;
        this.totalPages = totalPages;
        this.maxButtons = maxButtons;
        this.onPageChange = onPageChange;
        this.replicateChanges = replicateChanges;
    }

    render() {
        console.log('adssaddas');
        this.buttonHolder = document.createElement('div');
        this.buttonHolder.classList.add('col-12', 'col-md-9');

        this.paginationButtons = document.createElement('ul');
        this.paginationButtons.classList.add('pagination', 'pagination-sm');

        this.prevButton = document.createElement('li');
        this.prevButton.classList.add('page-link');
        this.prevButton.textContent = 'Previous';
        this.prevButton.disabled = true;
        this.prevButton.addEventListener('click', () => {
            if (this.currentPage > 1) {
                this.onPageChange(this.currentPage - 1);
                this.updateButtons(this.currentPage - 1);
                this.replicateChanges(this.currentPage);
            }
        });

        this.paginationButtons.appendChild(this.prevButton);
        this.pageButtons = Array();

        for (let i = 1; i <= this.totalPages; i++) {
            const pageButton = document.createElement('li');
            pageButton.classList.add('page-item');
            const pageButtonLink = document.createElement('a');
            pageButtonLink.classList.add('page-link');
            pageButtonLink.textContent = i;
            if (!(this.currentPage === i ||
                i > (this.currentPage + this.maxButtons / 2) ||
                i < (this.currentPage - this.maxButtons / 2))) {
                pageButton.classList.add('hidden');
            }
            if(this.currentPage === i){
                pageButton.classList.add('active');
            }
            pageButtonLink.addEventListener('click', () => {
                this.onPageChange(i);
                this.updateButtons(i);
                this.replicateChanges(this.currentPage);
            });
            pageButton.appendChild(pageButtonLink);
            this.pageButtons.push(pageButton);
            this.paginationButtons.appendChild(pageButton);
        }

        this.nextButton = document.createElement('li');
        this.nextButton.classList.add('page-link');
        this.nextButton.textContent = 'Next';
        this.nextButton.disabled = this.totalPages === 0 || this.currentPage === this.totalPages;
        this.nextButton.addEventListener('click', () => {
            if (this.currentPage < this.totalPages) {
                this.onPageChange(this.currentPage + 1);
                this.updateButtons(this.currentPage + 1);
                this.replicateChanges(this.currentPage);
            }
        });
        this.paginationButtons.appendChild(this.nextButton);
        this.buttonHolder.appendChild(this.paginationButtons);

        return this.buttonHolder;

    }

    updateButtons(page, perPage) {

        if (page) {
            this.currentPage = parseInt(page);
        }

        if (this.prevButton) {
            this.prevButton.disabled = this.currentPage === 1;
        }

        if (this.nextButton) {
            this.nextButton.disabled = this.totalPages === 0 || this.currentPage === this.totalPages;
        }

        if (this.pageButtons) {
            this.pageButtons.forEach((button, index) => {
                button.classList.remove('active');
                if (this.currentPage === index + 1 ||
                    index > (this.currentPage + this.maxButtons / 2) ||
                    index < (this.currentPage - this.maxButtons / 2)) {
                    button.classList.add('hidden');
                }else {
                    button.classList.remove('hidden');
                }
                if (index + 1 == this.currentPage) {
                    button.classList.add('active');
                    button.classList.remove('hidden');
                } else {
                    button.removeAttribute('value');
                }
            });
        }
    }
}

class Label {
    constructor(actualPage, totalPages, recordsCount, totalRecords) {
        this.actualPage = actualPage;
        this.totalPages = totalPages;
        this.recordsCount = recordsCount;
        this.totalRecords = totalRecords;
    }

    render(){
        this.paginationLabel = document.createElement('div');
        this.paginationLabel.classList.add('col-12');

        this.pageLabel = document.createElement('span');
        this.pageLabel.innerText = `Page: ${this.actualPage} of ${this.totalPages} | `;

        this.recordLabel = document.createElement('span');
        this.recordLabel.innerText = `${this.recordsCount} of ${this.totalRecords} records shown`;

        this.paginationLabel.appendChild(this.pageLabel);
        this.paginationLabel.appendChild(this.recordLabel);

        return this.paginationLabel;
    }

    rerender() {
        this.pageLabel.innerText = `Page: ${this.actualPage} of ${this.totalPages} | `;
        this.recordLabel.innerText = `${this.recordsCount} of ${this.totalRecords} records shown`;
    }

    updateLabel(page, perPage, totalPages){
        this.actualPage = page;
        this.perPage = perPage;
        this.rerender();
    }

}

class Search {

    constructor(currentPage, totalPages, onPageChange, replicateChanges){
        this.currentPage = currentPage;
        this.totalPages = totalPages;
        this.onPageChange = onPageChange;
        this.replicateChanges = replicateChanges;
    }

    render(){

        const paginationHolder = document.createElement('div');
        paginationHolder.classList.add('col-12', 'col-md-3');

        this.paginationSearch = document.createElement('div');
        this.paginationSearch.classList.add('search', 'input-group','col-md-3', 'col-sm-12');

        this.textualNumber = document.createElement('input');
        this.textualNumber.classList.add('form-control', 'form-control-sm');
        this.textualNumber.setAttribute('type', 'number');
        this.textualNumber.setAttribute('min', 1);
        this.textualNumber.setAttribute('max', this.totalPages);
        this.textualNumber.value = this.currentPage;

        this.textualNumber.addEventListener('blur', (event) => {
            let page = event.target.value;
            if(page > this.totalPages){
                page = this.totalPages;
                this.textualNumber.value = this.totalPages;
            }
            if(page < 1){
                page = 1;
                this.textualNumber.value = page;
            }
            this.replicateChanges(page);
            this.onPageChange(page);
        });
        this.textualNumber.addEventListener('keydown', (event) => {
            if (event.key === 'Enter') {
                console.log('reberberbrte');
            }
        });
        //this.paginationSearch.appendChild(this.textualNumber);
        this.append(this.textualNumber);

        this.selectNumber = document.createElement('select');
        this.selectNumber.classList.add('form-select', 'form-select-sm');
        for(let i = 1; i < this.totalPages; i++){
            const selectOption = document.createElement('option');
            selectOption.innerText = i;
            selectOption.setAttribute('value', i);
            this.selectNumber.appendChild(selectOption);
        }

        this.selectNumber.addEventListener('change', (event) => {
            this.replicateChanges(event.target.value);
            this.onPageChange(event.target.value);
        });

        //this.paginationSearch.appendChild(this.selectNumber);
        this.append(this.selectNumber);

        const recordsPerPage = document.createElement('select');
        recordsPerPage.classList.add('form-select', 'form-select-sm');
        for(let i = 1; i < 10; i++){
            const selectOption = document.createElement('option');
            selectOption.innerText = i * 25;
            selectOption.setAttribute('value', i * 25);
            recordsPerPage.appendChild(selectOption);
        }
        recordsPerPage.addEventListener('change', (event) => {
            //console.log(event.target.value)
            //this.replicateChanges(event.target.value);
        });
        //this.paginationSearch.appendChild(recordsPerPage);
        this.append(recordsPerPage);

        paginationHolder.appendChild(this.paginationSearch);

        return paginationHolder;

    }

    updateSearch(pageNumber, perPage) {
        this.selectNumber.value = pageNumber;
        this.textualNumber.value = pageNumber;
    }

    searchChange(){

    }

    append(element){
        let container = document.createElement('div');
        container.classList.add('col-4');
        container.appendChild(element);
        this.paginationSearch.appendChild(container);
    }

}

class Pagination {
    constructor(onPageChange, rowCount, perPage) {
        this.currentPage = 1;
        this.maxButtons = 10;
        this.onPageChange = onPageChange;
        this.rowCount = rowCount;
        this.perPage = perPage;
        this.totalPages = Math.ceil(rowCount / perPage);
    }

    render() {
        this.paginationContainer = document.createElement('div');
        this.paginationContainer.classList.add('pagination', 'row');

        if(this.totalPages <= 1){
            return this.paginationContainer;
        }

        this.labels = new Label(this.currentPage, this.totalPages, 10, 1000);

        this.buttons = new Buttons(this.currentPage, this.totalPages, 10, this.onPageChange, (page) => {
            this.labels.updateLabel(page, this.perPage);
            this.search.updateSearch(page, this.perPage);
        });

        this.search = new Search(this.currentPage, this.totalPages, this.onPageChange, (page, size) => {
            this.labels.updateLabel(page, this.perPage);
            this.buttons.updateButtons(page, this.perPage);
            this.search.updateSearch(page, this.perPage);
        });

        this.paginationContainer.appendChild(this.labels.render());
        this.paginationContainer.appendChild(this.buttons.render());
        this.paginationContainer.appendChild(this.search.render());

        return this.paginationContainer;
    }

    changePageSize(onPageChange, rowCount, perPage) {
        this.currentPage = 1;
        this.maxButtons = 10;
        this.onPageChange = onPageChange;
        this.rowCount = rowCount;
        this.perPage = perPage;
        this.totalPages = Math.ceil(rowCount / perPage);

        return this.paginationContainer;
    }

}

class ListButton{
    constructor(icon, actions){
        this.icon = icon;
        this.actions = actions;
    }

    render() {
        this.actionButton = document.createElement('button');
        this.actionButton.classList.add('btn', 'btn-outline-secondary');
        this.actionButton.innerHTML = `<i class="fa fa-${this.icon}" aria-hidden="true"></i>`;

        return this.actionButton;
    }

}

class SearchBar {
    constructor(onSearch) {
        this.onSearch = onSearch;
    }

    render() {
        this.searchBarContainer = document.createElement('div');
        this.searchBarContainer.classList.add('search-bar');

        this.inputElement = document.createElement('input');
        this.inputElement.classList.add('form-control');
        this.inputElement.setAttribute('type', 'text');
        this.inputElement.addEventListener('keydown', (event) => {
            if (event.key === 'Enter') {
                this.searchText = this.inputElement.value;
                this.onSearch(this.searchText);
            }
        });

        this.searchBarContainer.appendChild(this.inputElement);

        return this.searchBarContainer;
    }

    getSearch(){
        return this.inputElement.value;
    }
}

class ToolBar {
    constructor(onSearch, actions, options) {
        this.onSearch = onSearch;
        this.actions = actions;
        this.options = options;
    }

    render() {
        this.toolbar = document.createElement('div');
        this.toolbar.classList.add('input-group', 'mb-3');

        if (typeof this.actions !== 'undefined' && typeof this.options.selectable === 'undefined' && this.actions.length > 0) {

            this.actionSet = new ActionSet(this.actions, 'button');
            let { button, toggle, list } = this.actionSet.render();

            if (button) {
                this.toolbar.appendChild(button);
            }

            if (toggle) {
                this.toolbar.appendChild(toggle);
            }

            if (list) {
                this.toolbar.append(list);
            }
        }

        this.searchBar = new SearchBar(this.onSearch);
        this.toolbar.appendChild(this.searchBar.render());
        this.toolbar.appendChild(new ListButton('th', '').render());
        return this.toolbar;
    }

    getSearch() {
        return this.searchBar.getSearch();
    }

}

class DataTable {

    constructor(tableElement, options = {}) {
        if (typeof tableElement === 'string') {
            this.tableElement = document.getElementById(tableElement);
        } else {
            this.tableElement = tableElement;
        }
        this.page = 1;
        this.options = options;
        this.perPage = 25;
        this.getData();
    }

    render(data) {
        const { actions, rowActions, columns, rows, total } = data;
        this.table = document.createElement('table');
        this.table.classList.add('table', 'table-responsive');

        this.searchBar = new ToolBar((searchText) => {
            this.getData(searchText);
        }, actions, this.options);

        this.pagination = new Pagination((page, perPage) => {
            this.page = page--;
            //this.perPage = perPage;
            this.getData();
        }, total, this.perPage);

        this.headerElement = new TableHeader(columns);
        const tableHeader = this.headerElement.render();
        this.table.appendChild(tableHeader.colgroup);
        this.table.appendChild(tableHeader.thead);

        this.bodyElement = new TableBody(rows, columns, rowActions, this.options);
        this.table.appendChild(this.bodyElement.render());

        // #ToDo Convert table to div
        if (this.tableElement.tagName === 'TABLE') {
            const divContainer = document.createElement('div');
            while (this.tableElement.firstChild) {
                divContainer.appendChild(this.tableElement.firstChild);
            }
            this.tableElement.parentNode.replaceChild(divContainer, this.tableElement);
        }

        this.tableElement.appendChild(this.searchBar.render());
        this.tableElement.appendChild(this.pagination.render());
        this.tableElement.appendChild(this.table);

    }

    rerender(data) {
        const { columns, rows, rowActions, total } = data;

        if (!this.table) {
            this.render(data);
            return;
        }

        const content = new TableBody(rows, columns, rowActions, this.options).render();
        this.table.querySelector('tbody').innerHTML = content.innerHTML;

    }

    async getData() {

        let requestBody = {
            'page': this.page - 1,
            'pageSize': this.perPage
        };

        if(this.searchBar){
            requestBody.search = this.searchBar.getSearch();
        }

        const params = new URLSearchParams(requestBody).toString();
        const response = await fetch(this.options.url + '?' + params);
        const data = await response.json();
        this.rerender(data);
    }

}

export { DataTable as default };