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

import * as vscode from 'vscode';
import * as os from 'os';
import * as constants from './constants';
import * as path from 'path';
import * as glob from 'fast-glob';
import * as dataworkspace from 'dataworkspace';
import * as mssql from '../../../mssql';
import { promises as fs } from 'fs';

/**
 * Consolidates on the error message string
 */
export function getErrorMessage(error: any): string {
	return (error instanceof Error)
		? (typeof error.message === 'string' ? error.message : '')
		: typeof error === 'string' ? error : `${JSON.stringify(error, undefined, '\t')}`;
}

/**
 * removes any leading portion shared between the two URIs from outerUri.
 * e.g. [@param innerUri: 'this\is'; @param outerUri: '\this\is\my\path'] => 'my\path' OR
 * e.g. [@param innerUri: 'this\was'; @param outerUri: '\this\is\my\path'] => '..\is\my\path'
 * @param innerUri the URI that will be cut away from the outer URI
 * @param outerUri the URI that will have any shared beginning portion removed
 */
export function trimUri(innerUri: vscode.Uri, outerUri: vscode.Uri): string {
	let innerParts = innerUri.path.split('/');
	let outerParts = outerUri.path.split('/');

	if (path.isAbsolute(outerUri.path)
		&& innerParts.length > 0 && outerParts.length > 0
		&& innerParts[0].toLowerCase() !== outerParts[0].toLowerCase()) {
		throw new Error(constants.ousiderFolderPath);
	}

	while (innerParts.length > 0 && outerParts.length > 0 && innerParts[0].toLocaleLowerCase() === outerParts[0].toLocaleLowerCase()) {
		innerParts = innerParts.slice(1);
		outerParts = outerParts.slice(1);
	}

	while (innerParts.length > 1) {
		outerParts.unshift(constants.RelativeOuterPath);
		innerParts = innerParts.slice(1);
	}

	return outerParts.join('/');
}

/**
 * Trims any character contained in @param chars from both the beginning and end of @param input
 */
export function trimChars(input: string, chars: string): string {
	let output = input;

	let i = 0;
	while (chars.includes(output[i])) { i++; }
	output = output.substr(i);

	i = 0;
	while (chars.includes(output[output.length - i - 1])) { i++; }
	output = output.substring(0, output.length - i);

	return output;
}

/**
 * Checks if the folder or file exists @param path path of the folder/file
*/
export async function exists(path: string): Promise<boolean> {
	try {
		await fs.access(path);
		return true;
	} catch {
		return false;
	}
}

/**
 * get quoted path to be used in any commandline argument
 * @param filePath
 */
export function getQuotedPath(filePath: string): string {
	return (os.platform() === 'win32') ?
		getQuotedWindowsPath(filePath) :
		getQuotedNonWindowsPath(filePath);
}

/**
 * ensure that path with spaces are handles correctly (return quoted path)
 */
function getQuotedWindowsPath(filePath: string): string {
	filePath = filePath.split('\\').join('\\\\').split('"').join('');
	return '"' + filePath + '"';
}

/**
 * ensure that path with spaces are handles correctly (return quoted path)
 */
function getQuotedNonWindowsPath(filePath: string): string {
	filePath = filePath.split('\\').join('/').split('"').join('');
	return '"' + filePath + '"';
}

/**
 * Get safe relative path for Windows and non-Windows Platform
 * This is needed to read sqlproj entried created on SSDT and opened in MAC
 * '/' in tree is recognized all platforms but "\\" only by windows
 */
export function getPlatformSafeFileEntryPath(filePath: string): string {
	const parts = filePath.split('\\');
	return parts.join('/');
}

/**
 * Standardizes slashes to be "\\" for consistency between platforms and compatibility with SSDT
 */
export function convertSlashesForSqlProj(filePath: string): string {
	const parts = filePath.split('/');
	return parts.join('\\');
}

/**
 * Read SQLCMD variables from xmlDoc and return them
 * @param xmlDoc xml doc to read SQLCMD variables from. Format must be the same that sqlproj and publish profiles use
 */
export function readSqlCmdVariables(xmlDoc: any): Record<string, string> {
	let sqlCmdVariables: Record<string, string> = {};
	for (let i = 0; i < xmlDoc.documentElement.getElementsByTagName(constants.SqlCmdVariable)?.length; i++) {
		const sqlCmdVar = xmlDoc.documentElement.getElementsByTagName(constants.SqlCmdVariable)[i];
		const varName = sqlCmdVar.getAttribute(constants.Include);

		if (sqlCmdVar.getElementsByTagName(constants.DefaultValue)[0] !== undefined) {
			// project file path
			sqlCmdVariables[varName] = sqlCmdVar.getElementsByTagName(constants.DefaultValue)[0].childNodes[0].nodeValue;
		}
		else {
			// profile path
			sqlCmdVariables[varName] = sqlCmdVar.getElementsByTagName(constants.Value)[0].childNodes[0].nodeValue;
		}
	}

	return sqlCmdVariables;
}

/**
 * 	Removes $() around a sqlcmd variable
 * @param name
 */
export function removeSqlCmdVariableFormatting(name: string | undefined): string {
	if (!name || name === '') {
		return '';
	}

	if (name.length > 3) {
		// Trim in case we get "  $(x)"
		name = name.trim();
		let indexStart = name.startsWith('$(') ? 2 : 0;
		let indexEnd = name.endsWith(')') ? 1 : 0;
		if (indexStart > 0 || indexEnd > 0) {
			name = name.substr(indexStart, name.length - indexEnd - indexStart);
		}
	}

	// Trim in case the customer types "  $(x   )"
	return name.trim();
}

/**
 * 	Format as sqlcmd variable by adding $() if necessary
 * if the variable already starts with $(, then add )
 * @param name
 */
export function formatSqlCmdVariable(name: string): string {
	if (!name || name === '') {
		return name;
	}

	// Trim in case we get "  $(x)"
	name = name.trim();

	if (!name.startsWith('$(') && !name.endsWith(')')) {
		name = `$(${name})`;
	} else if (name.startsWith('$(') && !name.endsWith(')')) {
		// add missing end parenthesis, same behavior as SSDT
		name = `${name})`;
	}

	return name;
}

/**
 * Checks if it's a valid sqlcmd variable name
 * https://docs.microsoft.com/en-us/sql/ssms/scripting/sqlcmd-use-with-scripting-variables?redirectedfrom=MSDN&view=sql-server-ver15#guidelines-for-scripting-variable-names-and-values
 * @param name variable name to validate
 */
export function isValidSqlCmdVariableName(name: string | undefined): boolean {
	// remove $() around named if it's there
	name = removeSqlCmdVariableFormatting(name);

	// can't contain whitespace
	if (!name || name.trim() === '' || name.includes(' ')) {
		return false;
	}

	// can't contain these characters
	if (name.includes('$') || name.includes('@') || name.includes('#') || name.includes('"') || name.includes('\'') || name.includes('-')) {
		return false;
	}

	// TODO: tsql parsing to check if it's a reserved keyword or invalid tsql https://github.com/microsoft/azuredatastudio/issues/12204
	// TODO: give more detail why variable name was invalid https://github.com/microsoft/azuredatastudio/issues/12231

	return true;
}

/**
 * Recursively gets all the sqlproj files at any depth in a folder
 * @param folderPath
 */
export async function getSqlProjectFilesInFolder(folderPath: string): Promise<string[]> {
	// path needs to use forward slashes for glob to work
	const escapedPath = glob.escapePath(folderPath.replace(/\\/g, '/'));
	const sqlprojFilter = path.posix.join(escapedPath, '**', '*.sqlproj');
	const results = await glob(sqlprojFilter);

	return results;
}

/**
 * Get all the projects in the workspace that are sqlproj
 */
export function getSqlProjectsInWorkspace(): vscode.Uri[] {
	const api = getDataWorkspaceExtensionApi();
	return api.getProjectsInWorkspace().filter((p: vscode.Uri) => path.extname(p.fsPath) === constants.sqlprojExtension);
}

export function getDataWorkspaceExtensionApi(): dataworkspace.IExtension {
	const extension = vscode.extensions.getExtension(dataworkspace.extension.name)!;
	return extension.exports;
}

/*
 * Returns the default deployment options from DacFx
 */
export async function GetDefaultDeploymentOptions(): Promise<mssql.DeploymentOptions> {
	const service = (vscode.extensions.getExtension(mssql.extension.name)!.exports as mssql.IExtension).schemaCompare;
	const result = await service.schemaCompareGetDefaultOptions();

	return result.defaultDeploymentOptions;
}

export interface IPackageInfo {
	name: string;
	fullName: string;
	version: string;
	aiKey: string;
}

export function getPackageInfo(packageJson?: any): IPackageInfo | undefined {
	if (!packageJson) {
		packageJson = require('../../package.json');
	}

	if (packageJson) {
		return {
			name: packageJson.name,
			fullName: `${packageJson.publisher}.${packageJson.name}`,
			version: packageJson.version,
			aiKey: packageJson.aiKey
		};
	}

	return undefined;
}