import { NextRequest } from "next/server";
import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";

const createMock = vi.fn();
const updateMock = vi.fn();
const sendInboxMock = vi.fn();
const sendConfirmationMock = vi.fn();
const isDatabaseConfiguredMock = vi.fn();

const rateLimitKeyMock = vi.hoisted(() =>
  vi.fn(
    (_key: string, _minIntervalMs: number): { ok: true } | { ok: false; retryAfterMs: number } => ({
      ok: true,
    }),
  ),
);

vi.mock("../../lib/server/db", () => ({
  prisma: {
    workshopInquiry: {
      create: (...args: unknown[]) => createMock(...args),
      update: (...args: unknown[]) => updateMock(...args),
    },
  },
}));

vi.mock("../../lib/server/mail", () => ({
  sendWorkshopInquiryNotification: (...args: unknown[]) => sendInboxMock(...args),
  sendWorkshopInquiryConfirmation: (...args: unknown[]) => sendConfirmationMock(...args),
}));

vi.mock("../../lib/server/env", () => ({
  isDatabaseConfigured: () => isDatabaseConfiguredMock(),
}));

vi.mock("../../lib/server/rateLimit", () => ({
  rateLimitKey: (key: string, minIntervalMs: number) => rateLimitKeyMock(key, minIntervalMs),
}));

import { POST } from "../../app/api/workshop-signup/route";

const startedAt = Date.now() - 30_000;

function payload(overrides: Record<string, unknown> = {}) {
  return {
    challenges: ["big-change"],
    challengeOther: "",
    unspokenQuestion: "Who decides when we merge?",
    organizationName: "Northside Credit Union",
    organizationKind: "credit-union",
    memberCount: "under-1000",
    contactName: "Ada Lovelace",
    email: "Ada@Example.com",
    role: "board",
    sourcePage: "/workshops",
    sourceUrl: "https://communityrule.com/workshops",
    startedAt,
    company_website: "",
    ...overrides,
  };
}

describe("POST /api/workshop-signup", () => {
  beforeEach(() => {
    createMock.mockReset();
    updateMock.mockReset();
    sendInboxMock.mockReset();
    sendConfirmationMock.mockReset();
    rateLimitKeyMock.mockReset();
    isDatabaseConfiguredMock.mockReset();
    createMock.mockResolvedValue({ id: "inq-1" });
    updateMock.mockResolvedValue({});
    sendInboxMock.mockResolvedValue(undefined);
    sendConfirmationMock.mockResolvedValue(undefined);
    rateLimitKeyMock.mockImplementation(() => ({ ok: true as const }));
    isDatabaseConfiguredMock.mockReturnValue(true);
    process.env.WORKSHOP_INQUIRY_TO = "workshops@example.com";
  });

  afterEach(() => {
    delete process.env.WORKSHOP_INQUIRY_TO;
    delete process.env.NEXT_PUBLIC_WORKSHOP_SCHEDULING_URL;
  });

  it("saves the row, then emails the inbox, then confirms", async () => {
    const order: string[] = [];
    createMock.mockImplementation(async () => {
      order.push("save");
      return { id: "inq-1" };
    });
    sendInboxMock.mockImplementation(async () => {
      order.push("inbox");
    });
    sendConfirmationMock.mockImplementation(async () => {
      order.push("confirmation");
    });

    const res = await POST(
      new NextRequest("https://x.test/api/workshop-signup", {
        method: "POST",
        body: JSON.stringify(payload()),
      }),
      undefined,
    );

    expect(res.status).toBe(200);
    expect(await res.json()).toEqual({
      ok: true,
      status: "sent",
      largeOrganization: false,
    });
    expect(order).toEqual(["save", "inbox", "confirmation"]);
    expect(createMock.mock.calls[0][0].data.email).toBe("ada@example.com");
    expect(createMock.mock.calls[0][0].data.routeSuggestion).toBe(
      "Send the one-page brief, then offer a call.",
    );
  });

  it("shows the confirmation and saves nothing when the honeypot is filled", async () => {
    const res = await POST(
      new NextRequest("https://x.test/api/workshop-signup", {
        method: "POST",
        body: JSON.stringify(payload({ company_website: "https://spam.example" })),
      }),
      undefined,
    );
    expect(res.status).toBe(200);
    expect(createMock).not.toHaveBeenCalled();
    expect(sendInboxMock).not.toHaveBeenCalled();
  });

  it("returns the form errors and keeps the answers", async () => {
    const res = await POST(
      new NextRequest("https://x.test/api/workshop-signup", {
        method: "POST",
        body: JSON.stringify(payload({ email: "not-an-email", organizationName: "Northside" })),
      }),
      undefined,
    );
    expect(res.status).toBe(400);
    const body = await res.json();
    expect(body.status).toBe("invalid");
    expect(body.fieldErrors.email).toBe("invalid");
    expect(body.values.organizationName).toBe("Northside");
    expect(createMock).not.toHaveBeenCalled();
    expect(sendInboxMock).not.toHaveBeenCalled();
  });

  it("keeps the row and skips a thrown inbox email", async () => {
    sendInboxMock.mockRejectedValue(new Error("smtp down"));
    const res = await POST(
      new NextRequest("https://x.test/api/workshop-signup", {
        method: "POST",
        body: JSON.stringify(payload({ memberCount: "1000-10000" })),
      }),
      undefined,
    );
    expect(res.status).toBe(200);
    expect(createMock).toHaveBeenCalledTimes(1);
    expect(sendConfirmationMock).toHaveBeenCalledTimes(1);
    const body = await res.json();
    expect(body.largeOrganization).toBe(true);
    expect(JSON.stringify(body)).not.toMatch(/price|\$/);
  });

  it("sends nothing when the row cannot be saved", async () => {
    createMock.mockRejectedValue(new Error("db down"));
    const res = await POST(
      new NextRequest("https://x.test/api/workshop-signup", {
        method: "POST",
        body: JSON.stringify(payload()),
      }),
      undefined,
    );
    expect(res.status).toBe(502);
    expect(sendInboxMock).not.toHaveBeenCalled();
    expect(sendConfirmationMock).not.toHaveBeenCalled();
  });
});