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/*
* Copyright (C) 2023-2024 Yomitan Authors
* Copyright (C) 2019-2022 Yomichan Authors
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
import {EventDispatcher} from './event-dispatcher.js';
import {ExtensionError} from './extension-error.js';
/**
* This class handles logging of messages to the console and triggering
* an event for log calls.
* @augments EventDispatcher<import('log').Events>
*/
export class Logger extends EventDispatcher {
/**
* Creates a new instance.
*/
constructor() {
super();
/** @type {string} */
this._extensionName = 'Yomitan';
try {
const {name, version} = chrome.runtime.getManifest();
this._extensionName = `${name} ${version}`;
} catch (e) {
// NOP
}
}
/**
* Logs a generic error. This will trigger the 'log' event with the same arguments as the function invocation.
* @param {unknown} error The error to log. This is typically an `Error` or `Error`-like object.
* @param {import('log').LogLevel} level The level to log at. Values include `'info'`, `'debug'`, `'warn'`, and `'error'`.
* Other values will be logged at a non-error level.
* @param {?import('log').LogContext} [context] An optional context object for the error which should typically include a `url` field.
*/
log(error, level, context = null) {
if (typeof context !== 'object' || context === null) {
context = {url: location.href};
}
let errorString;
try {
if (typeof error === 'string') {
errorString = error;
} else {
errorString = (
typeof error === 'object' && error !== null ?
error.toString() :
`${error}`
);
if (/^\[object \w+\]$/.test(errorString)) {
errorString = JSON.stringify(error);
}
}
} catch (e) {
errorString = `${error}`;
}
let errorStack;
try {
errorStack = (
error instanceof Error ?
(typeof error.stack === 'string' ? error.stack.trimEnd() : '') :
''
);
} catch (e) {
errorStack = '';
}
let errorData;
try {
if (error instanceof ExtensionError) {
errorData = error.data;
}
} catch (e) {
// NOP
}
if (errorStack.startsWith(errorString)) {
errorString = errorStack;
} else if (errorStack.length > 0) {
errorString += `\n${errorStack}`;
}
let message = `${this._extensionName} has encountered a problem.`;
message += `\nOriginating URL: ${context.url}\n`;
message += errorString;
if (typeof errorData !== 'undefined') {
message += `\nData: ${JSON.stringify(errorData, null, 4)}`;
}
message += '\n\nIssues can be reported at https://github.com/themoeway/yomitan/issues';
/* eslint-disable no-console */
switch (level) {
case 'log': console.log(message); break;
case 'info': console.info(message); break;
case 'debug': console.debug(message); break;
case 'warn': console.warn(message); break;
case 'error': console.error(message); break;
}
/* eslint-enable no-console */
this.trigger('log', {error, level, context});
}
/**
* Logs a warning. This function invokes `log` internally.
* @param {unknown} error The error to log. This is typically an `Error` or `Error`-like object.
* @param {?import('log').LogContext} context An optional context object for the error which should typically include a `url` field.
*/
warn(error, context = null) {
this.log(error, 'warn', context);
}
/**
* Logs an error. This function invokes `log` internally.
* @param {unknown} error The error to log. This is typically an `Error` or `Error`-like object.
* @param {?import('log').LogContext} context An optional context object for the error which should typically include a `url` field.
*/
error(error, context = null) {
this.log(error, 'error', context);
}
/**
* @param {import('log').LogLevel} errorLevel
* @returns {import('log').LogErrorLevelValue}
*/
getLogErrorLevelValue(errorLevel) {
switch (errorLevel) {
case 'log':
case 'info':
case 'debug':
return 0;
case 'warn': return 1;
case 'error': return 2;
}
}
}
/**
* This object is the default logger used by the runtime.
*/
export const log = new Logger();
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