Initial

src/config/index.ts

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+import { z } from 'zod';
+import fs from 'fs';
+import path from 'path';
+import YAML from 'yaml';
+import dotenv from 'dotenv';
+
+dotenv.config();
+
+export const ConfigSchema = z.object({
+  reddit: z.object({
+    subreddits: z.array(z.string()).min(1),
+    pollIntervalMs: z.number().default(120000),
+    userAgent: z.string().default('RedditBot/1.0'),
+    targetGenders: z.array(z.enum(['male', 'female', 'other', 'unknown'])).default(['female']),
+  }),
+  openrouter: z.object({
+    apiKey: z.string(),
+    model: z.string().default('google/gemini-3-flash-preview'),
+    imageAnalysisPrompt: z.string(),
+    messageGenerationPrompt: z.string(),
+  }),
+  rateLimit: z.object({
+    minDelayBetweenMessagesMs: z.number().default(300000),
+    maxMessagesPerHour: z.number().default(8),
+    jitterMs: z.number().default(60000),
+  }),
+  browser: z.object({
+    sessionDir: z.string().default('./data/browser-session'),
+    headless: z.boolean().default(false),
+    dryRun: z.boolean().default(false),
+  }),
+  database: z.object({
+    path: z.string().default('./data/reddit-bot.db'),
+  }),
+  web: z.object({
+    enabled: z.boolean().default(true),
+    port: z.number().default(3000),
+  }),
+});
+
+export type Config = z.infer<typeof ConfigSchema>;
+
+export function loadConfig(): Config {
+  const configPath = path.resolve(process.cwd(), 'config.yaml');
+
+  if (!fs.existsSync(configPath)) {
+    throw new Error(`Config file not found at ${configPath}`);
+  }
+
+  const configFile = fs.readFileSync(configPath, 'utf-8');
+  const rawConfig = YAML.parse(configFile);
+
+  // Inject API key from environment
+  if (!rawConfig.openrouter) {
+    rawConfig.openrouter = {};
+  }
+  rawConfig.openrouter.apiKey = process.env.OPENROUTER_API_KEY || rawConfig.openrouter.apiKey;
+
+  if (!rawConfig.openrouter.apiKey) {
+    throw new Error('OPENROUTER_API_KEY environment variable is required');
+  }
+
+  const result = ConfigSchema.safeParse(rawConfig);
+
+  if (!result.success) {
+    const errors = result.error.issues
+      .map((e) => `  - ${String(e.path.join('.'))}: ${e.message}`)
+      .join('\n');
+    throw new Error(`Invalid configuration:\n${errors}`);
+  }
+
+  return result.data;
+}