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

import * as azdata from 'azdata';
import * as vscode from 'vscode';
import * as constants from '../../common/constants';
import { ModelViewBase } from './modelViewBase';
import { ApiWrapper } from '../../common/apiWrapper';
import { WorkspaceModel } from '../../modelManagement/interfaces';
import { IDataComponent, AzureWorkspaceResource } from '../interfaces';

/**
 * View to render azure models in a table
 */
export class AzureModelsTable extends ModelViewBase implements IDataComponent<WorkspaceModel[]> {

	private _table: azdata.DeclarativeTableComponent;
	private _selectedModel: WorkspaceModel[] = [];
	private _models: WorkspaceModel[] | undefined;
	private _onModelSelectionChanged: vscode.EventEmitter<void> = new vscode.EventEmitter<void>();
	public readonly onModelSelectionChanged: vscode.Event<void> = this._onModelSelectionChanged.event;

	/**
	 * Creates a view to render azure models in a table
	 */
	constructor(apiWrapper: ApiWrapper, private _modelBuilder: azdata.ModelBuilder, parent: ModelViewBase, private _multiSelect: boolean = true) {
		super(apiWrapper, parent.root, parent);
		this._table = this.registerComponent(this._modelBuilder);
	}

	/**
	 * Register components
	 * @param modelBuilder model builder
	 */
	public registerComponent(modelBuilder: azdata.ModelBuilder): azdata.DeclarativeTableComponent {
		this._table = modelBuilder.declarativeTable()
			.withProperties<azdata.DeclarativeTableProperties>(
				{
					columns: [
						{ // Action
							displayName: '',
							valueType: azdata.DeclarativeDataType.component,
							isReadOnly: true,
							width: 50,
							headerCssStyles: {
								...constants.cssStyles.tableHeader
							},
							rowCssStyles: {
								...constants.cssStyles.tableRow
							},
						},
						{ // Name
							displayName: constants.modelName,
							ariaLabel: constants.modelName,
							valueType: azdata.DeclarativeDataType.string,
							isReadOnly: true,
							width: 150,
							headerCssStyles: {
								...constants.cssStyles.tableHeader
							},
							rowCssStyles: {
								...constants.cssStyles.tableRow
							},
						},
						{ // Created
							displayName: constants.modelCreated,
							ariaLabel: constants.modelCreated,
							valueType: azdata.DeclarativeDataType.string,
							isReadOnly: true,
							width: 100,
							headerCssStyles: {
								...constants.cssStyles.tableHeader
							},
							rowCssStyles: {
								...constants.cssStyles.tableRow
							},
						},
						{ // Framework
							displayName: constants.modelFramework,
							ariaLabel: constants.modelFramework,
							valueType: azdata.DeclarativeDataType.string,
							isReadOnly: true,
							width: 100,
							headerCssStyles: {
								...constants.cssStyles.tableHeader
							},
							rowCssStyles: {
								...constants.cssStyles.tableRow
							},
						},
						{ // Version
							displayName: constants.modelFrameworkVersion,
							ariaLabel: constants.modelFrameworkVersion,
							valueType: azdata.DeclarativeDataType.string,
							isReadOnly: true,
							width: 100,
							headerCssStyles: {
								...constants.cssStyles.tableHeader
							},
							rowCssStyles: {
								...constants.cssStyles.tableRow
							},
						}
					],
					data: [],
					ariaLabel: constants.mlsConfigTitle
				})
			.component();
		return this._table;
	}

	public get component(): azdata.DeclarativeTableComponent {
		return this._table;
	}

	/**
	 * Load data in the component
	 * @param workspaceResource Azure workspace
	 */
	public async loadData(workspaceResource?: AzureWorkspaceResource | undefined): Promise<void> {

		if (this._table) {
			if (workspaceResource) {
				this._models = await this.listAzureModels(workspaceResource);
				let tableData: any[][] = [];

				if (this._models) {
					tableData = tableData.concat(this._models.map(model => this.createTableRow(model)));
				}

				if (this.isTableEmpty) {
					this._table.dataValues = [];
					this._table.data = [];
				} else {
					this._table.data = tableData;
				}
			} else {
				this._table.dataValues = [];
				this._table.data = [];
			}
		}
		this._onModelSelectionChanged.fire();
	}

	public get isTableEmpty(): boolean {
		return !this._models || this._models.length === 0;
	}

	private createTableRow(model: WorkspaceModel): any[] {
		if (this._modelBuilder) {
			let selectModelButton: azdata.Component;
			let onSelectItem = (checked: boolean) => {
				const foundItem = this._selectedModel.find(x => x === model);
				if (checked && !foundItem) {
					this._selectedModel.push(model);
				} else if (foundItem) {
					this._selectedModel = this._selectedModel.filter(x => x !== model);
				}
				this._onModelSelectionChanged.fire();
			};
			if (this._multiSelect) {
				const checkbox = this._modelBuilder.checkBox().withProperties({
					name: 'amlModel',
					value: model.id,
					width: 15,
					height: 15,
					checked: false
				}).component();
				checkbox.onChanged(() => {
					onSelectItem(checkbox.checked || false);
				});
				selectModelButton = checkbox;
			} else {
				const radioButton = this._modelBuilder.radioButton().withProperties({
					name: 'amlModel',
					value: model.id,
					width: 15,
					height: 15,
					checked: false
				}).component();
				radioButton.onDidClick(() => {
					onSelectItem(radioButton.checked || false);
				});
				selectModelButton = radioButton;
			}

			return [selectModelButton, model.name, model.createdTime, model.framework, model.frameworkVersion];
		}

		return [];
	}

	/**
	 * Returns selected data
	 */
	public get data(): WorkspaceModel[] | undefined {
		if (this._models && this._selectedModel) {
			return this._selectedModel;
		}
		return undefined;
	}

	/**
	 * Refreshes the view
	 */
	public async refresh(): Promise<void> {
		await this.loadData();
	}
}