rename src to source

2026-07-27 10:19:13 +00:00
parent 35d38d4465
commit 75f84f6302
26 changed files with 15 additions and 15 deletions
@@ -0,0 +1,127 @@
+import 'dotenv/config';
+import { z } from 'zod';
+
+/**
+ * The configuration schema for the server.
+ */
+const configSchema = z.object({
+
+    /**
+     * The database configuration.
+     */
+    database: z.object({
+        path: z.string().default('data.db'),
+    }),
+
+    /**
+     * The server configuration.
+     */
+    server: z.object({
+        port: z.coerce.number().int()
+.positive()
+.default(3000),
+        host: z.string().default('0.0.0.0'),
+
+        /** Maximum encoded HTTP body or WebSocket message size in bytes. */
+        maxRequestBodyBytes: z.coerce
+            .number()
+            .int()
+            .positive()
+            .default(1024 * 1024),
+        cors: z
+            .object({
+                origin: z.string().default('*'),
+                methods: z.array(z.string()).default([ 'GET', 'POST', 'PUT', 'DELETE', 'OPTIONS' ]),
+                allowedHeaders: z.array(z.string()).default([ 'Content-Type', 'cache-control', 'X-Timestamp', 'X-PublicKey', 'X-Signature' ]),
+            })
+            .partial()
+            .prefault({}),
+    }),
+
+    /**
+     * The authentication configuration.
+     */
+    auth: z
+        .object({
+            timestampWindowMs: z.coerce
+                .number()
+                .int()
+                .positive()
+                .default(5 * 60 * 1000),
+        })
+        .prefault({}),
+});
+
+/** Raw configuration object accepted before Zod parsing. */
+type ConfigInput = z.input<typeof configSchema>;
+
+/** Fully parsed and defaulted configuration shape. */
+type ConfigSchema = z.output<typeof configSchema>;
+
+/**
+ * Typed, validated server configuration loaded from environment or objects.
+ */
+export class Config {
+    /**
+     * Creates a new Config from the environment variables.
+     * @returns The Config.
+     */
+    static fromEnv(): Config {
+        return this.from({
+            database: {
+                path: process.env.DATABASE_PATH,
+            },
+            server: {
+                port: process.env.SERVER_PORT,
+                maxRequestBodyBytes: process.env.SERVER_MAX_REQUEST_BODY_BYTES,
+                host: process.env.SERVER_HOST,
+                cors: {
+                    origin: process.env.CORS_ORIGIN,
+                    methods: process.env.CORS_METHODS?.split(','),
+                    allowedHeaders: process.env.CORS_ALLOWED_HEADERS?.split(','),
+                },
+            },
+            auth: {
+                timestampWindowMs: process.env.AUTH_TIMESTAMP_WINDOW_MS ? Number(process.env.AUTH_TIMESTAMP_WINDOW_MS) : undefined,
+            },
+        });
+    }
+
+    /**
+     * Creates a new Config from a configuration object.
+     * @param config - The configuration object.
+     * @returns The Config.
+     */
+    static from(config: ConfigInput): Config {
+        return new Config(configSchema.parse(config));
+    }
+
+    /**
+     * Gets the database configuration.
+     * @returns The database configuration.
+     */
+    public get database(): Readonly<ConfigSchema['database']> {
+        return this.config.database;
+    }
+
+    /**
+     * Gets the server configuration.
+     * @returns The server configuration.
+     */
+    public get server(): Readonly<ConfigSchema['server']> {
+        return this.config.server;
+    }
+
+    /**
+     * Gets the authentication configuration.
+     * @returns The authentication configuration.
+     */
+    public get auth(): Readonly<ConfigSchema['auth']> {
+        return this.config.auth;
+    }
+
+    /**
+     * @param config - Parsed configuration produced by the Zod schema.
+     */
+    private constructor(private readonly config: ConfigSchema) {}
+}