Add SMTP admin settings and contact form delivery

tests/mail-settings.test.ts

@@ -0,0 +1,88 @@
+import { describe, expect, it } from "vitest";
+
+import {
+  buildDefaultMailSettings,
+  parseMailSettingsValue,
+  toMailSettingsFormValues,
+} from "../lib/mail-settings";
+
+describe("mail settings helpers", () => {
+  it("builds safe defaults", () => {
+    expect(buildDefaultMailSettings()).toEqual({
+      smtp: {
+        host: "",
+        port: 587,
+        secure: false,
+        username: "",
+        password: "",
+      },
+      sender: {
+        email: "",
+        name: "",
+      },
+      recipients: {
+        contact: "",
+        test: "",
+      },
+    });
+  });
+
+  it("parses stored values and trims strings", () => {
+    const settings = parseMailSettingsValue(
+      JSON.stringify({
+        smtp: {
+          host: " smtp.example.com ",
+          port: "465",
+          secure: true,
+          username: " mailer ",
+          password: "secret",
+        },
+        sender: {
+          email: " hello@example.com ",
+          name: " Studio Moh ",
+        },
+        recipients: {
+          contact: " inbox@example.com ",
+          test: " test@example.com ",
+        },
+      }),
+    );
+
+    expect(settings.smtp.host).toBe("smtp.example.com");
+    expect(settings.smtp.port).toBe(465);
+    expect(settings.smtp.secure).toBe(true);
+    expect(settings.smtp.username).toBe("mailer");
+    expect(settings.smtp.password).toBe("secret");
+    expect(settings.sender.email).toBe("hello@example.com");
+    expect(settings.sender.name).toBe("Studio Moh");
+    expect(settings.recipients.contact).toBe("inbox@example.com");
+    expect(settings.recipients.test).toBe("test@example.com");
+  });
+
+  it("falls back when json is invalid", () => {
+    expect(parseMailSettingsValue("{invalid-json")).toEqual(buildDefaultMailSettings());
+  });
+
+  it("hides the saved password in form values", () => {
+    const formValues = toMailSettingsFormValues({
+      smtp: {
+        host: "smtp.example.com",
+        port: 587,
+        secure: false,
+        username: "mailer",
+        password: "secret",
+      },
+      sender: {
+        email: "hello@example.com",
+        name: "Studio Moh",
+      },
+      recipients: {
+        contact: "inbox@example.com",
+        test: "test@example.com",
+      },
+    });
+
+    expect(formValues.smtp.password).toBe("");
+    expect(formValues.smtp.hasPassword).toBe(true);
+  });
+});