Add currency settings, Settings service, and dialog to select fiat currency. Add support for non Official currencies like DOGE when using rates.

tests/cli/commands/settings.test.ts

@@ -0,0 +1,83 @@
+/// <reference types="node" />
+
+import { afterEach, beforeEach, describe, expect, test } from "vitest";
+import { mkdtempSync, readFileSync, rmSync } from "node:fs";
+import { tmpdir } from "node:os";
+import path from "node:path";
+
+import { handleSettingsCommand } from "../../../src/cli/commands/settings";
+import { CommandError } from "../../../src/cli/commands/types";
+import { createMockIO, createMockPaths } from "../mocks/command";
+
+describe("settings command", () => {
+  let tempDir: string;
+
+  beforeEach(() => {
+    tempDir = mkdtempSync(path.join(tmpdir(), "xo-cli-settings-command-test-"));
+  });
+
+  afterEach(() => {
+    rmSync(tempDir, { recursive: true, force: true });
+  });
+
+  test("shows default settings when .wallet does not exist", async () => {
+    const { io, capture } = createMockIO();
+    const paths = createMockPaths(tempDir);
+
+    const result = await handleSettingsCommand({ io, paths }, ["show"], {});
+
+    expect(result).toEqual({ currency: "USD" });
+    expect(capture.out.join("\n")).toContain("currency");
+    expect(capture.out.join("\n")).toContain("USD");
+  });
+
+  test("sets and gets currency", async () => {
+    const { io, capture } = createMockIO();
+    const paths = createMockPaths(tempDir);
+
+    await handleSettingsCommand({ io, paths }, ["set", "currency", "aud"], {});
+    const getResult = await handleSettingsCommand(
+      { io, paths },
+      ["get", "currency"],
+      {},
+    );
+
+    expect(getResult).toEqual({ key: "currency", value: "AUD" });
+    expect(capture.out).toContain("Updated currency: AUD");
+    expect(capture.out).toContain("AUD");
+  });
+
+  test("sets default-mnemonic and persists JSON .wallet", async () => {
+    const { io } = createMockIO();
+    const paths = createMockPaths(tempDir);
+
+    await handleSettingsCommand(
+      { io, paths },
+      ["set", "default-mnemonic", "mnemonic-primary"],
+      {},
+    );
+
+    const persisted = JSON.parse(readFileSync(paths.walletConfigPath, "utf8")) as {
+      currency: string;
+      "default-mnemonic"?: string;
+    };
+
+    expect(persisted).toEqual({
+      currency: "USD",
+      "default-mnemonic": "mnemonic-primary",
+    });
+  });
+
+  test("throws command error for unknown subcommand", async () => {
+    const { io } = createMockIO();
+    const paths = createMockPaths(tempDir);
+
+    try {
+      await handleSettingsCommand({ io, paths }, ["unknown"], {});
+      expect.fail("Expected settings command to throw");
+    } catch (error) {
+      expect(error).toBeInstanceOf(CommandError);
+      expect((error as CommandError).event).toBe("settings.subcommand.unknown");
+    }
+  });
+});