import { describe, it, expect, beforeAll, afterAll, beforeEach } from "vitest";
import type { FastifyInstance } from "fastify";
import { createTestApp, cleanDb, signupUser } from "./helpers.js";
import { db } from "../src/db/index.js";
import { packages } from "../src/db/schema.js";

let app: FastifyInstance;

beforeAll(async () => {
  app = await createTestApp();
});

afterAll(async () => {
  await app.close();
});

beforeEach(async () => {
  await cleanDb();
});

async function setupUserWithProject() {
  const signup = await signupUser(app, "user@example.com", "Org");
  const { accessToken, accounts } = signup.json();
  const accountId = accounts[0].id as string;

  const projectRes = await app.inject({
    method: "POST",
    url: `/accounts/${accountId}/projects`,
    headers: { authorization: `Bearer ${accessToken}` },
    payload: { name: "My Project" },
  });
  const projectId = projectRes.json().id as string;

  return { accessToken, accountId, projectId };
}

function headers(accessToken: string) {
  return { authorization: `Bearer ${accessToken}` };
}

async function seedSmallPackage() {
  const [pkg] = await db
    .insert(packages)
    .values({ slug: "small", name: "Small", vcpu: 1, ram: 1024, disk: 20, priceMonthly: "5.00" })
    .returning();
  return pkg;
}

describe("GET /accounts/:accountId/projects/:projectId/wms", () => {
  it("returns empty list when no WMs exist", async () => {
    const { accessToken, accountId, projectId } = await setupUserWithProject();

    const res = await app.inject({
      method: "GET",
      url: `/accounts/${accountId}/projects/${projectId}/wms`,
      headers: headers(accessToken),
    });

    expect(res.statusCode).toBe(200);
    expect(res.json()).toEqual([]);
  });

  it("returns WMs for the project", async () => {
    const { accessToken, accountId, projectId } = await setupUserWithProject();

    await app.inject({
      method: "POST",
      url: `/accounts/${accountId}/projects/${projectId}/wms`,
      headers: headers(accessToken),
      payload: { name: "WM 1", vcpu: 1, ram: 512, disk: 10 },
    });
    await app.inject({
      method: "POST",
      url: `/accounts/${accountId}/projects/${projectId}/wms`,
      headers: headers(accessToken),
      payload: { name: "WM 2", vcpu: 2, ram: 1024, disk: 20 },
    });

    const res = await app.inject({
      method: "GET",
      url: `/accounts/${accountId}/projects/${projectId}/wms`,
      headers: headers(accessToken),
    });

    expect(res.statusCode).toBe(200);
    expect(res.json()).toHaveLength(2);
  });

  it("returns 404 for a project in another account", async () => {
    const { accessToken, accountId, projectId } = await setupUserWithProject();

    // Create second account
    const accountRes = await app.inject({
      method: "POST",
      url: "/accounts",
      headers: { authorization: `Bearer ${accessToken}` },
      payload: { name: "Org 2" },
    });
    const secondAccountId = accountRes.json().id;

    const res = await app.inject({
      method: "GET",
      url: `/accounts/${secondAccountId}/projects/${projectId}/wms`,
      headers: headers(accessToken),
    });

    expect(res.statusCode).toBe(404);
  });
});

describe("POST /accounts/:accountId/projects/:projectId/wms", () => {
  it("creates a WM from a package", async () => {
    const { accessToken, accountId, projectId } = await setupUserWithProject();
    const pkg = await seedSmallPackage();

    const res = await app.inject({
      method: "POST",
      url: `/accounts/${accountId}/projects/${projectId}/wms`,
      headers: headers(accessToken),
      payload: { name: "My WM", packageId: pkg.id },
    });

    expect(res.statusCode).toBe(201);
    const body = res.json();
    expect(body.name).toBe("My WM");
    expect(body.packageId).toBe(pkg.id);
    expect(body.vcpu).toBe(1);
    expect(body.ram).toBe(1024);
    expect(body.disk).toBe(20);
  });

  it("creates a WM with custom settings", async () => {
    const { accessToken, accountId, projectId } = await setupUserWithProject();

    const res = await app.inject({
      method: "POST",
      url: `/accounts/${accountId}/projects/${projectId}/wms`,
      headers: headers(accessToken),
      payload: { name: "Custom WM", vcpu: 4, ram: 8192, disk: 100 },
    });

    expect(res.statusCode).toBe(201);
    const body = res.json();
    expect(body.packageId).toBeNull();
    expect(body.vcpu).toBe(4);
    expect(body.ram).toBe(8192);
    expect(body.disk).toBe(100);
  });

  it("returns 400 if neither packageId nor full custom settings provided", async () => {
    const { accessToken, accountId, projectId } = await setupUserWithProject();

    const res = await app.inject({
      method: "POST",
      url: `/accounts/${accountId}/projects/${projectId}/wms`,
      headers: headers(accessToken),
      payload: { name: "Bad WM", vcpu: 2 },
    });

    expect(res.statusCode).toBe(400);
    expect(res.json().error).toMatch(/packageId/);
  });

  it("returns 404 for non-existent package", async () => {
    const { accessToken, accountId, projectId } = await setupUserWithProject();

    const res = await app.inject({
      method: "POST",
      url: `/accounts/${accountId}/projects/${projectId}/wms`,
      headers: headers(accessToken),
      payload: { name: "WM", packageId: "00000000-0000-0000-0000-000000000000" },
    });

    expect(res.statusCode).toBe(404);
    expect(res.json().error).toMatch(/Package/);
  });

  it("returns 404 for a project in another account", async () => {
    const { accessToken, accountId, projectId } = await setupUserWithProject();

    const accountRes = await app.inject({
      method: "POST",
      url: "/accounts",
      headers: { authorization: `Bearer ${accessToken}` },
      payload: { name: "Org 2" },
    });
    const secondAccountId = accountRes.json().id;

    const res = await app.inject({
      method: "POST",
      url: `/accounts/${secondAccountId}/projects/${projectId}/wms`,
      headers: headers(accessToken),
      payload: { name: "WM", vcpu: 1, ram: 512, disk: 10 },
    });

    expect(res.statusCode).toBe(404);
  });
});

describe("PATCH /accounts/:accountId/projects/:projectId/wms/:id", () => {
  it("updates WM name", async () => {
    const { accessToken, accountId, projectId } = await setupUserWithProject();

    const create = await app.inject({
      method: "POST",
      url: `/accounts/${accountId}/projects/${projectId}/wms`,
      headers: headers(accessToken),
      payload: { name: "Old Name", vcpu: 1, ram: 512, disk: 10 },
    });
    const wmId = create.json().id;

    const res = await app.inject({
      method: "PATCH",
      url: `/accounts/${accountId}/projects/${projectId}/wms/${wmId}`,
      headers: headers(accessToken),
      payload: { name: "New Name" },
    });

    expect(res.statusCode).toBe(200);
    expect(res.json().name).toBe("New Name");
    expect(res.json().vcpu).toBe(1);
  });

  it("updates individual settings (e.g. only disk)", async () => {
    const { accessToken, accountId, projectId } = await setupUserWithProject();
    const pkg = await seedSmallPackage();

    const create = await app.inject({
      method: "POST",
      url: `/accounts/${accountId}/projects/${projectId}/wms`,
      headers: headers(accessToken),
      payload: { name: "WM", packageId: pkg.id },
    });
    const wmId = create.json().id;

    const res = await app.inject({
      method: "PATCH",
      url: `/accounts/${accountId}/projects/${projectId}/wms/${wmId}`,
      headers: headers(accessToken),
      payload: { disk: 40 },
    });

    expect(res.statusCode).toBe(200);
    expect(res.json().disk).toBe(40);
    expect(res.json().vcpu).toBe(1);
    expect(res.json().ram).toBe(1024);
  });

  it("returns 404 for non-existent WM", async () => {
    const { accessToken, accountId, projectId } = await setupUserWithProject();

    const res = await app.inject({
      method: "PATCH",
      url: `/accounts/${accountId}/projects/${projectId}/wms/00000000-0000-0000-0000-000000000000`,
      headers: headers(accessToken),
      payload: { name: "Nope" },
    });

    expect(res.statusCode).toBe(404);
  });

  it("returns 404 for project in another account", async () => {
    const { accessToken, accountId, projectId } = await setupUserWithProject();

    const create = await app.inject({
      method: "POST",
      url: `/accounts/${accountId}/projects/${projectId}/wms`,
      headers: headers(accessToken),
      payload: { name: "WM", vcpu: 1, ram: 512, disk: 10 },
    });
    const wmId = create.json().id;

    const accountRes = await app.inject({
      method: "POST",
      url: "/accounts",
      headers: { authorization: `Bearer ${accessToken}` },
      payload: { name: "Org 2" },
    });
    const secondAccountId = accountRes.json().id;

    const res = await app.inject({
      method: "PATCH",
      url: `/accounts/${secondAccountId}/projects/${projectId}/wms/${wmId}`,
      headers: headers(accessToken),
      payload: { name: "Hacked" },
    });

    expect(res.statusCode).toBe(404);
  });
});

describe("DELETE /accounts/:accountId/projects/:projectId/wms/:id", () => {
  it("deletes a WM", async () => {
    const { accessToken, accountId, projectId } = await setupUserWithProject();

    const create = await app.inject({
      method: "POST",
      url: `/accounts/${accountId}/projects/${projectId}/wms`,
      headers: headers(accessToken),
      payload: { name: "To Delete", vcpu: 1, ram: 512, disk: 10 },
    });
    const wmId = create.json().id;

    const res = await app.inject({
      method: "DELETE",
      url: `/accounts/${accountId}/projects/${projectId}/wms/${wmId}`,
      headers: headers(accessToken),
    });

    expect(res.statusCode).toBe(204);

    // Verify it's gone
    const list = await app.inject({
      method: "GET",
      url: `/accounts/${accountId}/projects/${projectId}/wms`,
      headers: headers(accessToken),
    });
    expect(list.json()).toEqual([]);
  });

  it("returns 404 for non-existent WM", async () => {
    const { accessToken, accountId, projectId } = await setupUserWithProject();

    const res = await app.inject({
      method: "DELETE",
      url: `/accounts/${accountId}/projects/${projectId}/wms/00000000-0000-0000-0000-000000000000`,
      headers: headers(accessToken),
    });

    expect(res.statusCode).toBe(404);
  });

  it("returns 404 for project in another account", async () => {
    const { accessToken, accountId, projectId } = await setupUserWithProject();

    const create = await app.inject({
      method: "POST",
      url: `/accounts/${accountId}/projects/${projectId}/wms`,
      headers: headers(accessToken),
      payload: { name: "WM", vcpu: 1, ram: 512, disk: 10 },
    });
    const wmId = create.json().id;

    const accountRes = await app.inject({
      method: "POST",
      url: "/accounts",
      headers: { authorization: `Bearer ${accessToken}` },
      payload: { name: "Org 2" },
    });
    const secondAccountId = accountRes.json().id;

    const res = await app.inject({
      method: "DELETE",
      url: `/accounts/${secondAccountId}/projects/${projectId}/wms/${wmId}`,
      headers: headers(accessToken),
    });

    expect(res.statusCode).toBe(404);
  });
});