/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the Source EULA. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

import * as DOM from 'vs/base/browser/dom';
import type * as azdata from 'azdata';
import { localize } from 'vs/nls';
import { IThemeService } from 'vs/platform/theme/common/themeService';
import { removeLineBreaks } from 'sql/base/common/strings';
import { isString } from 'vs/base/common/types';
import { textFormatter } from 'sql/base/browser/ui/table/formatters';
import { ExecutionPlanPropertiesViewBase, PropertiesSortType } from 'sql/workbench/contrib/executionPlan/browser/executionPlanPropertiesViewBase';
import { IContextMenuService, IContextViewService } from 'vs/platform/contextview/browser/contextView';
import { IInstantiationService } from 'vs/platform/instantiation/common/instantiation';
import { IAccessibilityService } from 'vs/platform/accessibility/common/accessibility';

export class ExecutionPlanPropertiesView extends ExecutionPlanPropertiesViewBase {
	// Div that holds the name of the element selected
	private _operationName!: HTMLElement;
	private _model: ExecutionPlanPropertiesViewModel;

	public constructor(
		parentContainer: HTMLElement,
		@IThemeService themeService: IThemeService,
		@IInstantiationService instantiationService: IInstantiationService,
		@IContextMenuService contextMenuService: IContextMenuService,
		@IContextViewService contextViewService: IContextViewService,
		@IAccessibilityService accessibilityService: IAccessibilityService
	) {
		super(parentContainer, themeService, instantiationService, contextMenuService, contextViewService, accessibilityService);
		this._model = <ExecutionPlanPropertiesView>{};
		this._operationName = DOM.$('h3');
		this._operationName.classList.add('operation-name');
		this._parentContainer.appendChild(this._operationName);
		this.setHeader(this._operationName);

		this._parentContainer.style.display = 'none';
	}

	public set graphElement(element: azdata.executionPlan.ExecutionPlanNode | azdata.executionPlan.ExecutionPlanEdge) {
		this._model.graphElement = element;
		this.refreshPropertiesTable();
	}

	public sortPropertiesAlphabetically(props: azdata.executionPlan.ExecutionPlanGraphElementProperty[]): azdata.executionPlan.ExecutionPlanGraphElementProperty[] {
		return props.sort((a, b) => {
			if (!a?.name && !b?.name) {
				return 0;
			} else if (!a?.name) {
				return -1;
			} else if (!b?.name) {
				return 1;
			} else {
				return a.name.localeCompare(b.name);
			}
		});
	}

	public sortPropertiesReverseAlphabetically(props: azdata.executionPlan.ExecutionPlanGraphElementProperty[]): azdata.executionPlan.ExecutionPlanGraphElementProperty[] {
		return props.sort((a, b) => {
			if (!a?.name && !b?.name) {
				return 0;
			} else if (!a?.name) {
				return -1;
			} else if (!b?.name) {
				return 1;
			} else {
				return b.name.localeCompare(a.name);
			}
		});
	}


	public sortPropertiesByImportance(props: azdata.executionPlan.ExecutionPlanGraphElementProperty[]): azdata.executionPlan.ExecutionPlanGraphElementProperty[] {
		return props.sort((a, b) => {
			if (!a?.displayOrder && !b?.displayOrder) {
				return 0;
			} else if (!a?.displayOrder) {
				return -1;
			} else if (!b?.displayOrder) {
				return 1;
			} else {
				return a.displayOrder - b.displayOrder;
			}
		});
	}

	public refreshPropertiesTable(): void {
		if (this._model.graphElement) {
			const nodeName = (<azdata.executionPlan.ExecutionPlanNode>this._model.graphElement).name;
			this._operationName.innerText = nodeName ? removeLineBreaks(nodeName) : localize('executionPlanPropertiesEdgeOperationName', "Edge"); //since edges do not have names like node, we set the operation name to 'Edge'
		}

		const columns: Slick.Column<Slick.SlickData>[] = [
			{
				id: 'name',
				name: localize('nodePropertyViewNameNameColumnHeader', "Name"),
				field: 'name',
				width: 250,
				headerCssClass: 'prop-table-header',
				formatter: textFormatter
			},
			{
				id: 'value',
				name: localize('nodePropertyViewNameValueColumnHeader', "Value"),
				field: 'value',
				width: 250,
				headerCssClass: 'prop-table-header',
				formatter: textFormatter
			}
		];

		this.populateTable(columns, this.convertPropertiesToTableRows(this._model.graphElement?.properties));
	}

	private convertPropertiesToTableRows(properties: azdata.executionPlan.ExecutionPlanGraphElementProperty[] | undefined): Slick.SlickData[] {
		if (!properties) {
			return [];
		}

		const sortedProperties = this.sortProperties(properties);
		const rows: Slick.SlickData[] = [];

		sortedProperties.forEach((property, index) => {
			let row = {};
			row['name'] = property.name;

			if (!isString(property.value)) {
				// Styling values in the parent row differently to make them more apparent and standout compared to the rest of the cells.
				row['name'] = {
					text: row['name']
				};
				row['value'] = {
					text: removeLineBreaks(property.displayValue, ' ')
				};
				row['tootltip'] = property.displayValue;
				row['treeGridChildren'] = this.convertPropertiesToTableRows(property.value);

			} else {
				row['value'] = removeLineBreaks(property.displayValue, ' ');
				row['tooltip'] = property.displayValue;
			}

			rows.push(row);
		});

		return rows;
	}

	private sortProperties(props: azdata.executionPlan.ExecutionPlanGraphElementProperty[]): azdata.executionPlan.ExecutionPlanGraphElementProperty[] {
		switch (this.sortType) {
			case PropertiesSortType.DisplayOrder:
				props = this.sortPropertiesByImportance(props);
				break;
			case PropertiesSortType.Alphabetical:
				props = this.sortPropertiesAlphabetically(props);
				break;
			case PropertiesSortType.ReverseAlphabetical:
				props = this.sortPropertiesReverseAlphabetically(props);
				break;
		}
		return props;
	}

	private convertModelToTableRows(props: azdata.executionPlan.ExecutionPlanGraphElementProperty[] | undefined, parentIndex: number, rows: { [key: string]: string }[] = []): { [key: string]: string }[] {
		if (!props) {
			return rows;
		}

		props.forEach((p, i) => {
			let row = {};
			rows.push(row);
			row['name'] = p.name;
			row['parent'] = parentIndex;

			if (!isString(p.value)) {
				// Styling values in the parent row differently to make them more apparent and standout compared to the rest of the cells.
				row['name'] = {
					text: row['name']
				};
				row['value'] = {
					text: removeLineBreaks(p.displayValue, ' ')
				};
				row['tootltip'] = p.displayValue;
				this.convertModelToTableRows(p.value, rows.length - 1, rows);
			} else {
				row['value'] = {
					text: removeLineBreaks(p.displayValue, ' ')
				};
				row['tooltip'] = p.displayValue;
			}
		});
		return rows;
	}
}

export interface ExecutionPlanPropertiesViewModel {
	graphElement: azdata.executionPlan.ExecutionPlanNode | azdata.executionPlan.ExecutionPlanEdge;
}