/* eslint-disable comma-dangle, object-shorthand, func-names, space-before-function-paren, arrow-parens, no-unused-vars, class-methods-use-this, no-var, consistent-return, no-param-reassign, max-len */

((global) => {
  class TemplateSelector {
    constructor({ dropdown, data, pattern, wrapper, editor, fileEndpoint, $input } = {}) {
      this.onClick = this.onClick.bind(this);
      this.dropdown = dropdown;
      this.data = data;
      this.pattern = pattern;
      this.wrapper = wrapper;
      this.editor = editor;
      this.fileEndpoint = fileEndpoint;
      this.$input = $input || $('#file_name');
      this.dropdownIcon = $('.fa-chevron-down', this.dropdown);
      this.buildDropdown();
      this.bindEvents();
      this.onFilenameUpdate();

      this.autosizeUpdateEvent = document.createEvent('Event');
      this.autosizeUpdateEvent.initEvent('autosize:update', true, false);
    }

    buildDropdown() {
      return this.dropdown.glDropdown({
        data: this.data,
        filterable: true,
        selectable: true,
        toggleLabel: this.toggleLabel,
        search: {
          fields: ['name']
        },
        clicked: this.onClick,
        text: function(item) {
          return item.name;
        }
      });
    }

    bindEvents() {
      return this.$input.on('keyup blur', (e) => this.onFilenameUpdate());
    }

    toggleLabel(item) {
      return item.name;
    }

    onFilenameUpdate() {
      var filenameMatches;
      if (!this.$input.length) {
        return;
      }
      filenameMatches = this.pattern.test(this.$input.val().trim());
      if (!filenameMatches) {
        this.wrapper.addClass('hidden');
        return;
      }
      return this.wrapper.removeClass('hidden');
    }

    onClick(item, el, e) {
      e.preventDefault();
      return this.requestFile(item);
    }

    requestFile(item) {
      // This `requestFile` method is an abstract method that should
      // be added by all subclasses.
    }

    // To be implemented on the extending class
    // e.g.
    // Api.gitignoreText item.name, @requestFileSuccess.bind(@)
    requestFileSuccess(file, { skipFocus } = {}) {
      if (!file) return;

      const oldValue = this.editor.getValue();
      const newValue = file.content;

      this.editor.setValue(newValue, 1);
      if (!skipFocus) this.editor.focus();

      if (this.editor instanceof jQuery) {
        this.editor.get(0).dispatchEvent(this.autosizeUpdateEvent);
      }
    }

    startLoadingSpinner() {
      this.dropdownIcon
        .addClass('fa-spinner fa-spin')
        .removeClass('fa-chevron-down');
    }

    stopLoadingSpinner() {
      this.dropdownIcon
        .addClass('fa-chevron-down')
        .removeClass('fa-spinner fa-spin');
    }
  }

  global.TemplateSelector = TemplateSelector;
})(window.gl || (window.gl = {}));
