import { describe, it, expect, beforeAll, afterAll } from "vitest";
import PocketBase from "pocketbase";
import { randomBytes } from "node:crypto";

import { APP_URL, DEMO, adminPb, requireServices } from "./helpers";

let admin: PocketBase;
let projectId: string;
let inboxId: string;
let secondProjectId: string;
let secondInboxId: string;
let clientId: string;

const createdLinkIds: string[] = [];
const createdCardIds: string[] = [];
const createdSubmissionIds: string[] = [];
const createdClientIds: string[] = [];
const createdProjectIds: string[] = [];
const createdColumnIds: string[] = [];

function makeToken(): string {
  return randomBytes(24).toString("base64url");
}

async function newPickerLink(opts: {
  showProject1?: boolean;
  showProject2?: boolean;
  cap?: number;
} = {}) {
  const token = makeToken();
  const link = await admin.collection("intake_links").create({
    project: "",
    client: clientId,
    label: "picker test",
    token,
    active: true,
    expires_at: "",
    max_submissions_per_day: opts.cap ?? 100,
    submission_count: 0,
    submission_count_today: 0,
    submission_count_today_date: "",
    last_submission_at: "",
    notes: "",
  });
  createdLinkIds.push(link.id);

  // Set the per-project opt-in flag on whichever projects the test
  // wants visible.
  await admin.collection("projects").update(projectId, {
    show_in_intake: opts.showProject1 ?? true,
  });
  await admin.collection("projects").update(secondProjectId, {
    show_in_intake: opts.showProject2 ?? false,
  });

  return link;
}

const brief = {
  title: "Add a public-facing intake",
  summary: "Anonymous clients should be able to file requests.",
  subtasks: ["Generate a token", "Render the wizard"],
  openQuestions: ["Which URL prefix?"],
  area: "",
  degraded: false,
};

beforeAll(async () => {
  await requireServices();
  admin = await adminPb();

  const project = await admin
    .collection("projects")
    .getFirstListItem(`slug = "${DEMO.projectSlug}"`);
  projectId = project.id;
  clientId = project.client;

  inboxId = (
    await admin
      .collection("columns")
      .getFirstListItem(`project = "${projectId}" && is_inbox = true`)
  ).id;

  // Second project under the same client for picker isolation tests.
  const second = await admin.collection("projects").create({
    client: clientId,
    name: "Phase9 picker second",
    slug: `phase9-picker-second-${Date.now()}`,
    status: "active",
  });
  secondProjectId = second.id;
  createdProjectIds.push(secondProjectId);

  // The schema doesn't auto-create an inbox column for new projects; the
  // test owns the fixture it relies on.
  const secondColumn = await admin.collection("columns").create({
    project: secondProjectId,
    name: "Inbox",
    position: 1000,
    is_inbox: true,
  });
  createdColumnIds.push(secondColumn.id);
  secondInboxId = secondColumn.id;
});

afterAll(async () => {
  for (const id of createdCardIds) {
    await admin.collection("cards").delete(id).catch(() => {});
  }
  for (const id of createdSubmissionIds) {
    await admin
      .collection("intake_link_submissions")
      .delete(id)
      .catch(() => {});
  }
  for (const id of createdLinkIds) {
    await admin.collection("intake_links").delete(id).catch(() => {});
  }
  for (const id of createdColumnIds) {
    await admin.collection("columns").delete(id).catch(() => {});
  }
  for (const id of createdProjectIds) {
    await admin.collection("projects").delete(id).catch(() => {});
  }
  for (const id of createdClientIds) {
    await admin.collection("clients").delete(id).catch(() => {});
  }
  // Reset the demo project's show_in_intake so other tests are unaffected.
  await admin
    .collection("projects")
    .update(projectId, { show_in_intake: false })
    .catch(() => {});
  await admin
    .collection("projects")
    .update(secondProjectId, { show_in_intake: false })
    .catch(() => {});
});

describe("the picker page renders for a Phase 9 link", () => {
  it("renders the project list when both projects are opted in", async () => {
    const link = await newPickerLink({
      showProject1: true,
      showProject2: true,
    });

    const response = await fetch(`${APP_URL}/intake/${link.token}`);
    expect(response.status).toBe(200);
    const html = await response.text();

    expect(html).toContain("Tell us which project");
    expect(html).toContain("Phase9 picker second");
    // WFDash project name should also appear.
    expect(html).toMatch(/WFDash/);
  });

  it("redirects to the wizard URL when only one project is opted in", async () => {
    const link = await newPickerLink({
      showProject1: true,
      showProject2: false,
    });

    const response = await fetch(`${APP_URL}/intake/${link.token}`, {
      redirect: "manual",
    });
    expect([301, 302, 303, 307, 308]).toContain(response.status);
    const location = response.headers.get("location");
    expect(location).toBe(`/intake/${link.token}/p/${projectId}`);
  });

  it("renders the 'nothing here yet' page when zero projects are opted in", async () => {
    const link = await newPickerLink({
      showProject1: false,
      showProject2: false,
    });

    const response = await fetch(`${APP_URL}/intake/${link.token}`);
    expect(response.status).toBe(200);
    const html = await response.text();
    expect(html).toContain("Nothing here yet");
  });
});

describe("the wizard URL on the picker path", () => {
  it("renders the wizard when the projectId belongs to the link's client", async () => {
    const link = await newPickerLink({
      showProject1: true,
      showProject2: false,
    });

    const response = await fetch(
      `${APP_URL}/intake/${link.token}/p/${projectId}`
    );
    expect(response.status).toBe(200);
    const html = await response.text();
    // The wizard renders a "Tell <project> what's not working" start
    // button. The apostrophe is HTML-encoded in the rendered HTML.
    expect(html).toContain("what&#x27;s not working");
    expect(html).toContain("Request to");
  });

  it("404s when the projectId belongs to a different client", async () => {
    const link = await newPickerLink({
      showProject1: true,
      showProject2: false,
    });

    // Make a project under a different client.
    const otherClient = await admin.collection("clients").create({
      name: `picker test other ${Date.now()}`,
      slug: `picker-test-other-${Date.now()}`,
      active: true,
    });
    createdClientIds.push(otherClient.id);

    const otherProject = await admin.collection("projects").create({
      client: otherClient.id,
      name: "Other client project",
      slug: `picker-test-other-p-${Date.now()}`,
      status: "active",
      show_in_intake: true,
    });
    createdProjectIds.push(otherProject.id);

    const otherInbox = await admin.collection("columns").create({
      project: otherProject.id,
      name: "Inbox",
      position: 1,
      is_inbox: true,
    });
    createdColumnIds.push(otherInbox.id);

    const response = await fetch(
      `${APP_URL}/intake/${link.token}/p/${otherProject.id}`
    );
    expect(response.status).toBe(404);
  });

  it("404s when the projectId is opted out (show_in_intake = false)", async () => {
    const link = await newPickerLink({
      showProject1: false,
      showProject2: false,
    });

    const response = await fetch(
      `${APP_URL}/intake/${link.token}/p/${projectId}`
    );
    expect(response.status).toBe(404);
  });
});

describe("the picker submission flow", () => {
  it("creates a card on the chosen project's inbox", async () => {
    const link = await newPickerLink({
      showProject1: true,
      showProject2: false,
    });

    const response = await fetch(`${APP_URL}/api/public/intake`, {
      method: "POST",
      headers: { "content-type": "application/json" },
      body: JSON.stringify({
        token: link.token,
        projectId: projectId,
        brief,
        transcript: [{ question: "What?", answer: "Picked this project." }],
        sizeBand: "medium",
      }),
    });

    expect(response.status).toBe(201);
    const { card } = await response.json();
    createdCardIds.push(card.id);

    const created = await admin.collection("cards").getOne(card.id);
    expect(created.column).toBe(inboxId);
    expect(created.created_by_role).toBe("anonymous");
    expect(created.created_by).toBe("");
    expect(created.title).toBe(brief.title);

    // Track the per-(link, project) counter for cleanup.
    const today = new Date().toISOString().slice(0, 10);
    try {
      const row = await admin
        .collection("intake_link_submissions")
        .getFirstListItem(
          `link = "${link.id}" && project = "${projectId}" && date = "${today}"`
        );
      createdSubmissionIds.push(row.id);
    } catch {
      // ignore
    }
  });

  it("refuses a projectId that doesn't belong to the link's client", async () => {
    const link = await newPickerLink({
      showProject1: true,
      showProject2: false,
    });

    const otherClient = await admin.collection("clients").create({
      name: `picker test other ${Date.now()}`,
      slug: `picker-test-other-${Date.now()}`,
      active: true,
    });
    createdClientIds.push(otherClient.id);

    const otherProject = await admin.collection("projects").create({
      client: otherClient.id,
      name: "Other client project",
      slug: `picker-test-other-p-${Date.now()}`,
      status: "active",
      show_in_intake: true,
    });
    createdProjectIds.push(otherProject.id);

    const otherInbox = await admin.collection("columns").create({
      project: otherProject.id,
      name: "Inbox",
      position: 1,
      is_inbox: true,
    });
    createdColumnIds.push(otherInbox.id);

    const response = await fetch(`${APP_URL}/api/public/intake`, {
      method: "POST",
      headers: { "content-type": "application/json" },
      body: JSON.stringify({
        token: link.token,
        projectId: otherProject.id,
        brief,
        transcript: [],
      }),
    });
    expect(response.status).toBe(404);
  });

  it("ignores a hostile body that sets priority, accepted, or column", async () => {
    const link = await newPickerLink({
      showProject1: true,
      showProject2: false,
    });

    const response = await fetch(`${APP_URL}/api/public/intake`, {
      method: "POST",
      headers: { "content-type": "application/json" },
      body: JSON.stringify({
        token: link.token,
        projectId: projectId,
        brief,
        transcript: [],
        sizeBand: "large",
        priority: "critical",
        accepted: true,
        column: secondInboxId,
        created_by_role: "owner",
        created_by: "fake-user-id",
      }),
    });
    expect(response.status).toBe(201);
    const { card } = await response.json();
    createdCardIds.push(card.id);

    const created = await admin.collection("cards").getOne(card.id);
    expect(created.column).toBe(inboxId); // not secondInboxId
    expect(created.priority).toBe("medium");
    expect(created.accepted).toBe(false);
    expect(created.created_by_role).toBe("anonymous");
    expect(created.created_by).toBe("");

    const today = new Date().toISOString().slice(0, 10);
    try {
      const row = await admin
        .collection("intake_link_submissions")
        .getFirstListItem(
          `link = "${link.id}" && project = "${projectId}" && date = "${today}"`
        );
      createdSubmissionIds.push(row.id);
    } catch {
      // ignore
    }
  });

  it("isolates the daily cap per project under the same link", async () => {
    // The cap is bumped up to avoid PocketBase's read-after-write latency
    // making this test flaky in CI. The isolation property is what matters:
    // project1's submissions do not consume project2's budget.
    const link = await newPickerLink({
      showProject1: true,
      showProject2: true,
      cap: 5,
    });

    // 5 submissions to project1 — all land.
    for (let i = 0; i < 5; i++) {
      const r = await fetch(`${APP_URL}/api/public/intake`, {
        method: "POST",
        headers: { "content-type": "application/json" },
        body: JSON.stringify({
          token: link.token,
          projectId: projectId,
          brief,
          transcript: [],
        }),
      });
      expect(r.status).toBe(201);
      const c = (await r.json()).card;
      createdCardIds.push(c.id);
      // Brief pause so PocketBase's read-after-write window is comfortably past
      // by the time the next request arrives.
      await new Promise((r) => setTimeout(r, 50));
    }

    // 6th submission to project1 — hits the cap.
    const r2 = await fetch(`${APP_URL}/api/public/intake`, {
      method: "POST",
      headers: { "content-type": "application/json" },
      body: JSON.stringify({
        token: link.token,
        projectId: projectId,
        brief,
        transcript: [],
      }),
    });
    expect(r2.status).toBe(429);

    // First submission to project2 — still works (per-project cap).
    const r3 = await fetch(`${APP_URL}/api/public/intake`, {
      method: "POST",
      headers: { "content-type": "application/json" },
      body: JSON.stringify({
        token: link.token,
        projectId: secondProjectId,
        brief,
        transcript: [],
      }),
    });
    expect(r3.status).toBe(201);
    const c3 = (await r3.json()).card;
    createdCardIds.push(c3.id);

    // Cleanup counters.
    const today = new Date().toISOString().slice(0, 10);
    for (const pid of [projectId, secondProjectId]) {
      try {
        const row = await admin
          .collection("intake_link_submissions")
          .getFirstListItem(
            `link = "${link.id}" && project = "${pid}" && date = "${today}"`
          );
        createdSubmissionIds.push(row.id);
      } catch {
        // ignore
      }
    }
  });
});

describe("Phase 8 backwards compat", () => {
  it("a Phase 8 per-project link still resolves to the wizard", async () => {
    const token = makeToken();
    const link = await admin.collection("intake_links").create({
      project: projectId,
      client: "",
      label: "phase8 backwards",
      token,
      active: true,
      expires_at: "",
      max_submissions_per_day: 100,
      submission_count: 0,
      submission_count_today: 0,
      submission_count_today_date: "",
      last_submission_at: "",
      notes: "",
    });
    createdLinkIds.push(link.id);

    const response = await fetch(`${APP_URL}/intake/${link.token}`, {
      redirect: "manual",
    });
    expect([301, 302, 303, 307, 308]).toContain(response.status);
    expect(response.headers.get("location")).toBe(
      `/intake/${link.token}/p/${projectId}`
    );

    const wizard = await fetch(
      `${APP_URL}/intake/${link.token}/p/${projectId}`
    );
    expect(wizard.status).toBe(200);
  });

  it("the existing Phase 8 submission route still accepts Phase 8 links", async () => {
    const token = makeToken();
    const link = await admin.collection("intake_links").create({
      project: projectId,
      client: "",
      label: "phase8 submit",
      token,
      active: true,
      expires_at: "",
      max_submissions_per_day: 100,
      submission_count: 0,
      submission_count_today: 0,
      submission_count_today_date: "",
      last_submission_at: "",
      notes: "",
    });
    createdLinkIds.push(link.id);

    const response = await fetch(`${APP_URL}/api/public/intake`, {
      method: "POST",
      headers: { "content-type": "application/json" },
      body: JSON.stringify({
        token: link.token,
        brief,
        transcript: [],
      }),
    });
    expect([201, 400]).toContain(response.status);
    if (response.status === 201) {
      const { card } = await response.json();
      createdCardIds.push(card.id);
    }
  });
});