/**
* Copyright (c) 2026 Ivan Iraci <ivan.iraci@professioneit.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
import type { LSPServerConfig } from '../types.js';
import { getExtension } from '../utils/uri.js';
import { DEFAULT_SERVERS } from '../constants.js';
/**
* Detects the appropriate language server for a file.
*/
export class LanguageDetector {
constructor(private readonly servers: LSPServerConfig[] = DEFAULT_SERVERS) {}
/**
* Get the server configuration for a file path.
*/
getServerForFile(filePath: string): LSPServerConfig | undefined {
const ext = getExtension(filePath);
return this.servers.find(s => s.extensions.includes(ext));
}
/**
* Get the server configuration by ID.
*/
getServerById(serverId: string): LSPServerConfig | undefined {
return this.servers.find(s => s.id === serverId);
}
/**
* Get the server configuration for a language ID.
*/
getServerForLanguage(languageId: string): LSPServerConfig | undefined {
return this.servers.find(s => s.languageIds.includes(languageId));
}
/**
* Check if a file extension is supported.
*/
isExtensionSupported(extension: string): boolean {
const ext = extension.startsWith('.') ? extension : `.${extension}`;
return this.servers.some(s => s.extensions.includes(ext));
}
/**
* Get all supported file extensions.
*/
getSupportedExtensions(): string[] {
const extensions = new Set<string>();
for (const server of this.servers) {
for (const ext of server.extensions) {
extensions.add(ext);
}
}
return [...extensions];
}
/**
* Get all supported language IDs.
*/
getSupportedLanguageIds(): string[] {
const languageIds = new Set<string>();
for (const server of this.servers) {
for (const id of server.languageIds) {
languageIds.add(id);
}
}
return [...languageIds];
}
/**
* Get all configured server IDs.
*/
getServerIds(): string[] {
return this.servers.map(s => s.id);
}
}
/**
* Create a language detector instance.
*/
export function createLanguageDetector(
servers?: LSPServerConfig[]
): LanguageDetector {
return new LanguageDetector(servers);
}
