import { mkdtempSync, realpathSync, rmSync, symlinkSync } from "node:fs";
import { mkdir, rm, writeFile } from "node:fs/promises";
import { tmpdir } from "node:os";
import path from "node:path";
import {
  ComposioEmulator,
  PipedreamConnector,
  ThirdPartyConnectorEmulator,
} from "@rakazo/adapters";
import type {
  OnboardingScanApplyResult,
  OnboardingScanStatus,
  SpaceNavigation,
  UserProfileState,
} from "@rakazo/contracts";
import { afterAll, beforeAll, describe, expect, it, vi } from "vitest";
import type { createApp } from "../../../apps/api/src/app.ts";
import { sessionCookieHeader } from "./index.js";
import { writeOnboardingScanFixture } from "./onboarding-scan-fixture.js";

type App = { request: (input: string, init?: RequestInit) => Response | Promise<Response> };
type AppHandles = Awaited<ReturnType<typeof createApp>>;
type Actor = { userId: string; spaceId: string };

process.env.WAKEUP_DRIVER = "memory";
process.env.SANDBOX_PROVIDER = "fake";
process.env.AGENT_RUNTIME = "scripted";

const hasDb = process.env.VERIFY_DATABASE === "1" && Boolean(process.env.DATABASE_URL);
const describeWithDatabase = hasDb ? describe : describe.skip;
const TEST_ENCRYPTION_KEY = "offline-discovery-test-encryption-key";

describeWithDatabase("onboarding discovery through the API", () => {
  let handles: AppHandles;
  let app: App;
  let composio: ComposioEmulator;
  const stamp = `${Date.now()}-${Math.random().toString(36).slice(2)}`;
  const dataDir = mkdtempSync(path.join(tmpdir(), "rakazo-discovery-"));
  const home = realpathSync(mkdtempSync(path.join(tmpdir(), "rakazo-scan-home-")));
  const outside = realpathSync(mkdtempSync(path.join(tmpdir(), "rakazo-scan-outside-")));

  beforeAll(async () => {
    await writeOnboardingScanFixture(home);
    const { createApp } = await import("../../../apps/api/src/app.ts");
    composio = new ComposioEmulator();
    const thirdParties = new ThirdPartyConnectorEmulator();
    handles = await createApp({
      databaseUrl: process.env.DATABASE_URL!,
      dataDir,
      sandboxProvider: "fake",
      agentRuntime: "scripted",
      wakeupDriver: "memory",
      signupsEnabled: "true",
      encryptionKey: TEST_ENCRYPTION_KEY,
      onboardingScanHome: home,
      composio,
      pipedream: new PipedreamConnector(
        {
          clientId: "fake-client-id",
          clientSecret: "fake-client-secret",
          projectId: "fake-project-id",
          environment: "development",
          identitySecret: TEST_ENCRYPTION_KEY,
        },
        { fetch: thirdParties.fetch, resolveHostname: thirdParties.resolveHostname },
      ),
      remoteConnectors: {
        fetch: thirdParties.fetch,
        resolveHostname: thirdParties.resolveHostname,
      },
    });
    app = handles.app;
  });

  afterAll(async () => {
    await handles?.stop();
    for (const dir of [dataDir, home, outside]) rmSync(dir, { recursive: true, force: true });
  });

  async function account(label: string): Promise<{ cookie: string; actor: Actor }> {
    const cookie = await signup(app, `${label}-${stamp}@rakazo.test`, label);
    return { cookie, actor: await rpc<Actor>(app, cookie, "me") };
  }

  async function makeDeploymentOwner(actor: Actor): Promise<void> {
    await handles.prisma.deploymentSettings.update({
      where: { id: "default" },
      data: { ownerUserId: actor.userId },
    });
  }

  async function finishedScan(cookie: string) {
    const { scanId } = await rpc<{ scanId: string }>(app, cookie, "onboarding/scan");
    const status = await vi.waitFor(
      async () => {
        const current = await rpc<OnboardingScanStatus>(app, cookie, "onboarding/scanStatus", {
          scanId,
        });
        if (current.status === "scanning") throw new Error("still scanning");
        return current;
      },
      { timeout: 10_000, interval: 50 },
    );
    if (status.status !== "complete") throw new Error("scan failed");
    return { scanId, ...status };
  }

  it("offers the scan only to the deployment owner and keeps it with them", async () => {
    const owner = await account("discovery-owner");
    const other = await account("discovery-other");
    await makeDeploymentOwner(owner.actor);

    await expect(rpc(app, other.cookie, "onboarding/scanTarget")).resolves.toEqual({
      folder: null,
    });
    expect((await raw(app, other.cookie, "onboarding/scan")).status).toBe(403);
    await expect(rpc(app, owner.cookie, "onboarding/scanTarget")).resolves.toEqual({
      folder: home,
    });

    const scan = await finishedScan(owner.cookie);
    expect(scan.projects).toEqual([
      { id: "project-0", name: "atlas", path: "code/atlas" },
      { id: "project-1", name: "garden", path: "code/garden" },
    ]);
    expect(scan.facts.map((fact) => fact.label)).toEqual([
      "Python",
      "TypeScript",
      "Docker",
      "GitHub Actions",
    ]);
    expect(
      (await raw(app, other.cookie, "onboarding/scanStatus", { scanId: scan.scanId })).status,
    ).toBe(404);
    expect(
      (
        await raw(app, other.cookie, "onboarding/applyScan", {
          scanId: scan.scanId,
          projectIds: ["project-0"],
          factIds: ["language:Python"],
        })
      ).status,
    ).toBe(404);
    await expect(rpc<UserProfileState>(app, other.cookie, "profile/get")).resolves.toMatchObject({
      facts: [],
    });
  });

  it("creates the chosen projects in the owner's own spaces and saves only the chosen facts", async () => {
    const owner = await account("discovery-creator");
    const intruder = await account("discovery-intruder");
    const atlasFolder = path.join(home, "code/atlas");
    // Another tenant already linked a space with the same name to the same folder, back when
    // they held the deployment (only the deployment owner can link host folders).
    await makeDeploymentOwner(intruder.actor);
    const foreign = await rpc<{ id: string }>(app, intruder.cookie, "spaces/create", {
      name: "atlas",
      workspacePath: atlasFolder,
    });
    await makeDeploymentOwner(owner.actor);

    const scan = await finishedScan(owner.cookie);
    const choice = {
      scanId: scan.scanId,
      projectIds: ["project-0"],
      factIds: ["language:TypeScript", "tool:Docker"],
    };
    const applied = await rpc<OnboardingScanApplyResult>(
      app,
      owner.cookie,
      "onboarding/applyScan",
      choice,
    );

    expect(applied.factsAdded).toBe(2);
    expect(applied.spaces).toEqual([{ id: expect.any(String), name: "atlas" }]);
    const created = applied.spaces[0]!.id;
    expect(created).not.toBe(foreign.id);
    const ownerOrg = await handles.prisma.space.findUniqueOrThrow({
      where: { id: owner.actor.spaceId },
      select: { organizationId: true },
    });
    await expect(
      handles.prisma.space.findUniqueOrThrow({
        where: { id: created },
        select: { organizationId: true, workspacePath: true },
      }),
    ).resolves.toEqual({ organizationId: ownerOrg.organizationId, workspacePath: atlasFolder });
    await expect(
      handles.prisma.spaceMember.findMany({
        where: { spaceId: { in: [created, foreign.id] } },
        select: { spaceId: true, userId: true, role: true },
        orderBy: { spaceId: "asc" },
      }),
    ).resolves.toEqual(
      expect.arrayContaining([
        { spaceId: created, userId: owner.actor.userId, role: "owner" },
        { spaceId: foreign.id, userId: intruder.actor.userId, role: "owner" },
      ]),
    );
    expect(
      await handles.prisma.spaceMember.count({ where: { spaceId: { in: [created, foreign.id] } } }),
    ).toBe(2);
    await expect(
      handles.prisma.memoryDocument.count({
        where: { spaceId: created, userId: owner.actor.userId, scope: "user" },
      }),
    ).resolves.toBe(1);

    const ownerSpaces = await rpc<SpaceNavigation>(app, owner.cookie, "spaces/list");
    expect(ownerSpaces.spaces).toContainEqual(
      expect.objectContaining({
        id: created,
        name: "atlas",
        workspace: expect.objectContaining({ path: atlasFolder }),
      }),
    );
    expect(ownerSpaces.spaces.map((space) => space.id)).not.toContain(foreign.id);
    const intruderSpaces = await rpc<SpaceNavigation>(app, intruder.cookie, "spaces/list");
    expect(intruderSpaces.spaces.map((space) => space.id)).not.toContain(created);

    const profile = await rpc<UserProfileState>(app, owner.cookie, "profile/get");
    expect(
      profile.facts.map(({ category, value, source }) => ({ category, value, source })),
    ).toEqual(
      expect.arrayContaining([
        { category: "work", value: "Codes in TypeScript", source: "onboarding" },
        { category: "tools", value: "Uses Docker", source: "onboarding" },
      ]),
    );
    expect(profile.facts).toHaveLength(2);
    await expect(rpc<UserProfileState>(app, intruder.cookie, "profile/get")).resolves.toMatchObject(
      { facts: [] },
    );

    // Applying again reuses the space and the facts.
    await expect(
      rpc<OnboardingScanApplyResult>(app, owner.cookie, "onboarding/applyScan", choice),
    ).resolves.toEqual({ spaces: [{ id: created, name: "atlas" }], factsAdded: 0 });
    expect(await handles.prisma.spaceMember.count({ where: { userId: owner.actor.userId } })).toBe(
      2,
    );
  });

  it("refuses a chosen project that left the scan folder and writes nothing", async () => {
    const owner = await account("discovery-escape");
    await makeDeploymentOwner(owner.actor);
    const scan = await finishedScan(owner.cookie);
    await mkdir(path.join(outside, "elsewhere", ".git"), { recursive: true });
    await rm(path.join(home, "code/garden"), { recursive: true, force: true });
    symlinkSync(path.join(outside, "elsewhere"), path.join(home, "code/garden"));

    const response = await raw(app, owner.cookie, "onboarding/applyScan", {
      scanId: scan.scanId,
      projectIds: ["project-1"],
      factIds: ["language:Python"],
    });
    expect(response.status).toBe(400);
    expect(await handles.prisma.spaceMember.count({ where: { userId: owner.actor.userId } })).toBe(
      1,
    );
    await expect(rpc<UserProfileState>(app, owner.cookie, "profile/get")).resolves.toMatchObject({
      facts: [],
    });
  });

  it("refuses a chosen project whose folder became a file and writes nothing", async () => {
    const owner = await account("discovery-file");
    await makeDeploymentOwner(owner.actor);
    const garden = path.join(home, "code/garden");
    await rm(garden, { recursive: true, force: true });
    await writeOnboardingScanFixture(home);
    const scan = await finishedScan(owner.cookie);
    await rm(garden, { recursive: true, force: true });
    await writeFile(garden, "not a folder\n");

    const response = await raw(app, owner.cookie, "onboarding/applyScan", {
      scanId: scan.scanId,
      projectIds: ["project-0", "project-1"],
      factIds: ["language:Python"],
    });
    expect(response.status).toBe(400);
    expect(await handles.prisma.spaceMember.count({ where: { userId: owner.actor.userId } })).toBe(
      1,
    );
    await expect(rpc<UserProfileState>(app, owner.cookie, "profile/get")).resolves.toMatchObject({
      facts: [],
    });
  });

  it("remembers each connected app once as a tools fact and keeps it after revoking", async () => {
    const user = await account("discovery-apps");
    const other = await account("discovery-apps-other");
    // A featured app is named by its label, whatever the account is called.
    const gmail = await rpc<{ connectionId: string }>(app, user.cookie, "connections/begin", {
      connectorId: "composio",
      provider: "GMAIL",
      displayName: "Personal",
    });
    // Other apps take the first account's name; a second account adds nothing.
    for (const displayName of ["GitHub", "GitHub 2"]) {
      await rpc(app, user.cookie, "connections/begin", {
        connectorId: "composio",
        provider: "GITHUB",
        displayName,
      });
    }
    // Connected through the authorization round trip.
    const linear = await rpc<{ connectionId: string; authorizationUrl: string | null }>(
      app,
      user.cookie,
      "connections/begin",
      { connectorId: "pipedream", provider: "linear", displayName: "Linear" },
    );
    expect(linear.authorizationUrl).not.toBeNull();
    await expect(
      rpc<{ status: string }>(app, user.cookie, "connections/complete", {
        connectionId: linear.connectionId,
      }),
    ).resolves.toMatchObject({ status: "connected" });
    // Connected remotely, then noticed when the catalog reconciles a pending row.
    await handles.prisma.connection.create({
      data: {
        spaceId: user.actor.spaceId,
        userId: user.actor.userId,
        provider: "SLACK",
        displayName: "SLACK",
        status: "pending",
      },
    });
    await composio.begin(
      { provider: "SLACK", redirectUrl: "http://127.0.0.1.invalid/callback" },
      {
        operationId: "discovery-test",
        traceId: "discovery-test",
        spaceId: user.actor.spaceId,
        userId: user.actor.userId,
        signal: new AbortController().signal,
      },
    );
    await rpc(app, user.cookie, "connections/catalog", { connectorId: "composio" });
    await rpc(app, user.cookie, "connections/revoke", { connectionId: gmail.connectionId });

    const profile = await rpc<UserProfileState>(app, user.cookie, "profile/get");
    expect(
      profile.facts
        .map(({ category, value, source }) => ({ category, value, source }))
        .sort((left, right) => left.value.localeCompare(right.value)),
    ).toEqual([
      { category: "tools", value: "Uses GitHub", source: "connector" },
      { category: "tools", value: "Uses Gmail", source: "connector" },
      { category: "tools", value: "Uses Linear", source: "connector" },
      { category: "tools", value: "Uses Slack", source: "connector" },
    ]);
    await expect(rpc<UserProfileState>(app, other.cookie, "profile/get")).resolves.toMatchObject({
      facts: [],
    });
  });
});

async function signup(app: App, email: string, name: string) {
  const response = await app.request("/api/auth/sign-up/email", {
    method: "POST",
    headers: { "content-type": "application/json", origin: "http://127.0.0.1:5173" },
    body: JSON.stringify({ email, password: "password12", name }),
  });
  if (response.status >= 400) {
    throw new Error(`signup failed ${response.status}: ${await response.text()}`);
  }
  return sessionCookieHeader(response);
}

async function raw(app: App, cookie: string, procedure: string, body: unknown = {}) {
  return app.request(`/rpc/${procedure}`, {
    method: "POST",
    headers: { "content-type": "application/json", cookie, origin: "http://127.0.0.1:5173" },
    body: JSON.stringify({ json: body }),
  });
}

async function rpc<T>(app: App, cookie: string, procedure: string, body: unknown = {}) {
  const response = await raw(app, cookie, procedure, body);
  const text = await response.text();
  const payload = JSON.parse(text) as { json?: T; error?: { message?: string } };
  if (response.status >= 400 || payload.error) {
    throw new Error(`${procedure} ${response.status}: ${payload.error?.message ?? text}`);
  }
  return payload.json as T;
}