text: const colCache = require('../../../utils/col-cache');
  const BaseXform = require('../base-xform');
  
  const VIEW_STATES = {
    frozen: 'frozen',
    frozenSplit: 'frozen',
    split: 'split',
  };
  
  class SheetViewXform extends BaseXform {
    get tag() {
      return 'sheetView';
    }
  
    prepare(model) {
      switch (model.state) {
        case 'frozen':
        case 'split':
          break;
        default:
          model.state = 'normal';
          break;
      }
    }
  
    render(xmlStream, model) {
      xmlStream.openNode('sheetView', {
        workbookViewId: model.workbookViewId || 0,
      });
      const add = function(name, value, included) {
        if (included) {
          xmlStream.addAttribute(name, value);
        }
      };
      add('rightToLeft', '1', model.rightToLeft === true);
      add('tabSelected', '1', model.tabSelected);
      add('showRuler', '0', model.showRuler === false);
      add('showRowColHeaders', '0', model.showRowColHeaders === false);
      add('showGridLines', '0', model.showGridLines === false);
      add('zoomScale', model.zoomScale, model.zoomScale);
      add('zoomScaleNormal', model.zoomScaleNormal, model.zoomScaleNormal);
      add('view', model.style, model.style);
  
      let topLeftCell;
      let xSplit;
      let ySplit;
      let activePane;
      switch (model.state) {
        case 'frozen':
          xSplit = model.xSplit || 0;
          ySplit = model.ySplit || 0;
          topLeftCell = model.topLeftCell || colCache.getAddress(ySplit + 1, xSplit + 1).address;
          activePane =
            (model.xSplit && model.ySplit && 'bottomRight') ||
            (model.xSplit && 'topRight') ||
            'bottomLeft';
  
          xmlStream.leafNode('pane', {
            xSplit: model.xSplit || undefined,
            ySplit: model.ySplit || undefined,
            topLeftCell,
            activePane,
            state: 'frozen',
          });
          xmlStream.leafNode('selection', {
            pane: activePane,
            activeCell: model.activeCell,
            sqref: model.activeCell,
          });
          break;
        case 'split':
          if (model.activePane === 'topLeft') {
            model.activePane = undefined;
          }
          xmlStream.leafNode('pane', {
            xSplit: model.xSplit || undefined,
            ySplit: model.ySplit || undefined,
            topLeftCell: model.topLeftCell,
            activePane: model.activePane,
          });
          xmlStream.leafNode('selection', {
            pane: model.activePane,
            activeCell: model.activeCell,
            sqref: model.activeCell,
          });
          break;
        case 'normal':
          if (model.activeCell) {
            xmlStream.leafNode('selection', {
              activeCell: model.activeCell,
              sqref: model.activeCell,
            });
          }
          break;
        default:
          break;
      }
      xmlStream.closeNode();
    }
  
    parseOpen(node) {
      switch (node.name) {
        case 'sheetView':
          this.sheetView = {
            workbookViewId: parseInt(node.attributes.workbookViewId, 10),
            rightToLeft: node.attributes.rightToLeft === '1',
            tabSelected: node.attributes.tabSelected === '1',
            showRuler: !(node.attributes.showRuler === '0'),
            showRowColHeaders: !(node.attributes.showRowColHeaders === '0'),
            showGridLines: !(node.attributes.showGridLines === '0'),
            zoomScale: parseInt(node.attributes.zoomScale || '100', 10),
            zoomScaleNormal: parseInt(node.attributes.zoomScaleNormal || '100', 10),
            style: node.attributes.view,
          };
          this.pane = undefined;
          this.selections = {};
          return true;
  
        case 'pane':
          this.pane = {
            xSplit: parseInt(node.attributes.xSplit || '0', 10),
            ySplit: parseInt(node.attributes.ySplit || '0', 10),
            topLeftCell: node.attributes.topLeftCell,
            activePane: node.attributes.activePane || 'topLeft',
            state: node.attributes.state,
          };
          return true;
  
        case 'selection': {
          const name = node.attributes.pane || 'topLeft';
          this.selections[name] = {
            pane: name,
            activeCell: node.attributes.activeCell,
          };
          return true;
        }
  
        default:
          return false;
      }
    }
  
    parseText() {}
  
    parseClose(name) {
      let model;
      let selection;
      switch (name) {
        case 'sheetView':
          if (this.sheetView && this.pane) {
            model = this.model = {
              workbookViewId: this.sheetView.workbookViewId,
              rightToLeft: this.sheetView.rightToLeft,
              state: VIEW_STATES[this.pane.state] || 'split', // split is default
              xSplit: this.pane.xSplit,
              ySplit: this.pane.ySplit,
              topLeftCell: this.pane.topLeftCell,
              showRuler: this.sheetView.showRuler,
              showRowColHeaders: this.sheetView.showRowColHeaders,
              showGridLines: this.sheetView.showGridLines,
              zoomScale: this.sheetView.zoomScale,
              zoomScaleNormal: this.sheetView.zoomScaleNormal,
            };
            if (this.model.state === 'split') {
              model.activePane = this.pane.activePane;
            }
            selection = this.selections[this.pane.activePane];
            if (selection && selection.activeCell) {
              model.activeCell = selection.activeCell;
            }
            if (this.sheetView.style) {
              model.style = this.sheetView.style;
            }
          } else {
            model = this.model = {
              workbookViewId: this.sheetView.workbookViewId,
              rightToLeft: this.sheetView.rightToLeft,
              state: 'normal',
              showRuler: this.sheetView.showRuler,
              showRowColHeaders: this.sheetView.showRowColHeaders,
              showGridLines: this.sheetView.showGridLines,
              zoomScale: this.sheetView.zoomScale,
              zoomScaleNormal: this.sheetView.zoomScaleNormal,
            };
            selection = this.selections.topLeft;
            if (selection && selection.activeCell) {
              model.activeCell = selection.activeCell;
            }
            if (this.sheetView.style) {
              model.style = this.sheetView.style;
            }
          }
          return false;
        default:
          return true;
      }
    }
  
    reconcile() {}
  }
  
  module.exports = SheetViewXform;
  