545563e776
- Complete NestJS TypeScript implementation with WebSocket support - Direct messaging (DM) and group chat functionality - End-to-end encryption with AES encryption and key pairs - Media file support (images, videos, audio, documents) up to 100MB - Push notifications with Firebase Cloud Messaging integration - Mention alerts and real-time typing indicators - User authentication with JWT and Passport - SQLite database with TypeORM entities and relationships - Comprehensive API documentation with Swagger/OpenAPI - File upload handling with secure access control - Online/offline status tracking and presence management - Message editing, deletion, and reply functionality - Notification management with automatic cleanup - Health check endpoint for monitoring - CORS configuration for cross-origin requests - Environment-based configuration management - Structured for Flutter SDK integration Features implemented: ✅ Real-time messaging with Socket.IO ✅ User registration and authentication ✅ Direct messages and group chats ✅ Media file uploads and management ✅ End-to-end encryption ✅ Push notifications ✅ Mention alerts ✅ Typing indicators ✅ Message read receipts ✅ Online status tracking ✅ File access control ✅ Comprehensive API documentation Ready for Flutter SDK development and production deployment.
26 lines
1.1 KiB
JavaScript
26 lines
1.1 KiB
JavaScript
import Metadata from '../metadata.js'
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/**
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* Pattern that makes it easy to distinguish whether a region has a single
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* international dialing prefix or not. If a region has a single international
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* prefix (e.g. 011 in USA), it will be represented as a string that contains
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* a sequence of ASCII digits, and possibly a tilde, which signals waiting for
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* the tone. If there are multiple available international prefixes in a
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* region, they will be represented as a regex string that always contains one
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* or more characters that are not ASCII digits or a tilde.
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*/
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const SINGLE_IDD_PREFIX_REG_EXP = /^[\d]+(?:[~\u2053\u223C\uFF5E][\d]+)?$/
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// For regions that have multiple IDD prefixes
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// a preferred IDD prefix is returned.
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export default function getIddPrefix(country, callingCode, metadata) {
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const countryMetadata = new Metadata(metadata)
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countryMetadata.selectNumberingPlan(country, callingCode)
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if (countryMetadata.defaultIDDPrefix()) {
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return countryMetadata.defaultIDDPrefix()
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}
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if (SINGLE_IDD_PREFIX_REG_EXP.test(countryMetadata.IDDPrefix())) {
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return countryMetadata.IDDPrefix()
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}
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}
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