/*!
 * Column visibility buttons for Buttons and DataTables.
 * 2016 SpryMedia Ltd - datatables.net/license
 */

(function (factory) {
  if (typeof define === "function" && define.amd) {
    // AMD
    define(["jquery", "datatables.net", "datatables.net-buttons"], function ($) {
      return factory($, window, document);
    });
  } else if (typeof exports === "object") {
    // CommonJS
    module.exports = function (root, $) {
      if (!root) {
        root = window;
      }

      if (!$ || !$.fn.dataTable) {
        $ = require_once("datatables.net")(root, $).$;
      }

      if (!$.fn.dataTable.Buttons) {
        require_once("datatables.net-buttons")(root, $);
      }

      return factory($, root, root.document);
    };
  } else {
    // Browser
    factory(jQuery, window, document);
  }
})(function ($, window, document, undefined) {
  "use strict";
  var DataTable = $.fn.dataTable;

  $.extend(DataTable.ext.buttons, {
    // A collection of column visibility buttons
    colvis: function (dt, conf) {
      var node = null;
      var buttonConf = {
        extend: "collection",
        init: function (dt, n) {
          node = n;
        },
        text: function (dt) {
          return dt.i18n("buttons.colvis", "Column visibility");
        },
        className: "buttons-colvis",
        closeButton: false,
        buttons: [
          {
            extend: "columnsToggle",
            columns: conf.columns,
            columnText: conf.columnText,
          },
        ],
      };

      // Rebuild the collection with the new column structure if columns are reordered
      dt.on("column-reorder.dt" + conf.namespace, function (e, settings, details) {
        // console.log(node);
        // console.log('node', dt.button(null, node).node());
        dt.button(null, dt.button(null, node).node()).collectionRebuild([
          {
            extend: "columnsToggle",
            columns: conf.columns,
            columnText: conf.columnText,
          },
        ]);
      });

      return buttonConf;
    },

    // Selected columns with individual buttons - toggle column visibility
    columnsToggle: function (dt, conf) {
      var columns = dt
        .columns(conf.columns)
        .indexes()
        .map(function (idx) {
          return {
            extend: "columnToggle",
            columns: idx,
            columnText: conf.columnText,
          };
        })
        .toArray();

      return columns;
    },

    // Single button to toggle column visibility
    columnToggle: function (dt, conf) {
      return {
        extend: "columnVisibility",
        columns: conf.columns,
        columnText: conf.columnText,
      };
    },

    // Selected columns with individual buttons - set column visibility
    columnsVisibility: function (dt, conf) {
      var columns = dt
        .columns(conf.columns)
        .indexes()
        .map(function (idx) {
          return {
            extend: "columnVisibility",
            columns: idx,
            visibility: conf.visibility,
            columnText: conf.columnText,
          };
        })
        .toArray();

      return columns;
    },

    // Single button to set column visibility
    columnVisibility: {
      columns: undefined, // column selector
      text: function (dt, button, conf) {
        return conf._columnText(dt, conf);
      },
      className: "buttons-columnVisibility",
      action: function (e, dt, button, conf) {
        var col = dt.columns(conf.columns);
        var curr = col.visible();

        col.visible(conf.visibility !== undefined ? conf.visibility : !(curr.length ? curr[0] : false));
      },
      init: function (dt, button, conf) {
        var that = this;
        button.attr("data-cv-idx", conf.columns);

        dt.on("column-visibility.dt" + conf.namespace, function (e, settings) {
          if (!settings.bDestroying && settings.nTable == dt.settings()[0].nTable) {
            that.active(dt.column(conf.columns).visible());
          }
        }).on("column-reorder.dt" + conf.namespace, function (e, settings, details) {
          // Button has been removed from the DOM
          if (conf.destroying) {
            return;
          }

          if (dt.columns(conf.columns).count() !== 1) {
            return;
          }

          // This button controls the same column index but the text for the column has
          // changed
          that.text(conf._columnText(dt, conf));

          // Since its a different column, we need to check its visibility
          that.active(dt.column(conf.columns).visible());
        });

        this.active(dt.column(conf.columns).visible());
      },
      destroy: function (dt, button, conf) {
        dt.off("column-visibility.dt" + conf.namespace).off("column-reorder.dt" + conf.namespace);
      },

      _columnText: function (dt, conf) {
        // Use DataTables' internal data structure until this is presented
        // is a public API. The other option is to use
        // `$( column(col).node() ).text()` but the node might not have been
        // populated when Buttons is constructed.
        var idx = dt.column(conf.columns).index();
        var title = dt.settings()[0].aoColumns[idx].sTitle;

        if (!title) {
          title = dt.column(idx).header().innerHTML;
        }

        title = title
          .replace(/\n/g, " ") // remove new lines
          .replace(/<br\s*\/?>/gi, " ") // replace line breaks with spaces
          .replace(/<select(.*?)<\/select>/g, "") // remove select tags, including options text
          .replace(/<!\-\-.*?\-\->/g, "") // strip HTML comments
          .replace(/<.*?>/g, "") // strip HTML
          .replace(/^\s+|\s+$/g, ""); // trim

        return conf.columnText ? conf.columnText(dt, idx, title) : title;
      },
    },

    colvisRestore: {
      className: "buttons-colvisRestore",

      text: function (dt) {
        return dt.i18n("buttons.colvisRestore", "Restore visibility");
      },

      init: function (dt, button, conf) {
        conf._visOriginal = dt
          .columns()
          .indexes()
          .map(function (idx) {
            return dt.column(idx).visible();
          })
          .toArray();
      },

      action: function (e, dt, button, conf) {
        dt.columns().every(function (i) {
          // Take into account that ColReorder might have disrupted our
          // indexes
          var idx = dt.colReorder && dt.colReorder.transpose ? dt.colReorder.transpose(i, "toOriginal") : i;

          this.visible(conf._visOriginal[idx]);
        });
      },
    },

    colvisGroup: {
      className: "buttons-colvisGroup",

      action: function (e, dt, button, conf) {
        dt.columns(conf.show).visible(true, false);
        dt.columns(conf.hide).visible(false, false);

        dt.columns.adjust();
      },

      show: [],

      hide: [],
    },
  });

  return DataTable.Buttons;
});
