feat: add config validation and send dry-run

src/config/config.ts

@@ -3,6 +3,7 @@ import os from "node:os";
 import path from "node:path";
 
 import JSON5 from "json5";
+import { z } from "zod";
 
 export type ReplyMode = "text" | "command";
 export type ClaudeOutputFormat = "text" | "json" | "stream-json";
@@ -36,6 +37,50 @@ export type WarelayConfig = {
 
 export const CONFIG_PATH = path.join(os.homedir(), ".warelay", "warelay.json");
 
+const ReplySchema = z
+	.object({
+		mode: z.union([z.literal("text"), z.literal("command")]),
+		text: z.string().optional(),
+		command: z.array(z.string()).optional(),
+		template: z.string().optional(),
+		timeoutSeconds: z.number().int().positive().optional(),
+		bodyPrefix: z.string().optional(),
+		session: z
+			.object({
+				scope: z.union([z.literal("per-sender"), z.literal("global")]).optional(),
+				resetTriggers: z.array(z.string()).optional(),
+				idleMinutes: z.number().int().positive().optional(),
+				store: z.string().optional(),
+				sessionArgNew: z.array(z.string()).optional(),
+				sessionArgResume: z.array(z.string()).optional(),
+				sessionArgBeforeBody: z.boolean().optional(),
+			})
+			.optional(),
+		claudeOutputFormat: z
+			.union([
+				z.literal("text"),
+				z.literal("json"),
+				z.literal("stream-json"),
+				z.undefined(),
+			])
+			.optional(),
+	})
+	.refine(
+		(val) => (val.mode === "text" ? Boolean(val.text) : Boolean(val.command)),
+		{
+			message: "reply.text is required for mode=text; reply.command is required for mode=command",
+		},
+	);
+
+const WarelaySchema = z.object({
+	inbound: z
+		.object({
+			allowFrom: z.array(z.string()).optional(),
+			reply: ReplySchema.optional(),
+		})
+		.optional(),
+});
+
 export function loadConfig(): WarelayConfig {
 	// Read ~/.warelay/warelay.json (JSON5) if present.
 	try {
@@ -43,7 +88,13 @@ export function loadConfig(): WarelayConfig {
 		const raw = fs.readFileSync(CONFIG_PATH, "utf-8");
 		const parsed = JSON5.parse(raw);
 		if (typeof parsed !== "object" || parsed === null) return {};
-		return parsed as WarelayConfig;
+		const validated = WarelaySchema.safeParse(parsed);
+		if (!validated.success) {
+			console.error("Invalid warelay config:");
+			validated.error.issues.forEach((iss) => console.error(`- ${iss.path.join(".")}: ${iss.message}`));
+			return {};
+		}
+		return validated.data as WarelayConfig;
 	} catch (err) {
 		console.error(`Failed to read config at ${CONFIG_PATH}`, err);
 		return {};