/**
 * Playwright globalSetup — seeds the deterministic test user used by the
 * authenticated specs AND logs that user in once, persisting the resulting
 * `healthlog_session` cookie to a `storageState.json` file. Runs ONCE per
 * `pnpm e2e` invocation, before any worker boots.
 *
 * Why login here instead of in each spec:
 *   - The login endpoint is rate-limited to 5 attempts per IP per 15min,
 *     and Playwright runs specs concurrently — even one spec re-logging-in
 *     per `beforeEach` would burn through the limit on the first 6
 *     authenticated tests, causing flake.
 *   - Per-spec login is also slow (argon2 verify ~300ms × N specs).
 *
 * The Next.js prod server that Playwright's `webServer` starts and the
 * seed below both read `process.env.DATABASE_URL`, so they share the
 * same Postgres instance. The seed is idempotent — re-runs against an
 * existing dev DB rotate the password hash and clear AI/Codex state.
 *
 * Implementation note: we talk to Postgres via `pg` (raw SQL), NOT the
 * Prisma client. Playwright's TS loader does not handle the generated
 * Prisma client's `import.meta.url` indirection, and we don't need
 * Prisma's type safety for a one-off upsert. The integration suite
 * (`tests/integration/`) keeps using Prisma because Vitest's loader
 * does support the generated client.
 */
import { writeFile } from "node:fs/promises";
import { resolve } from "node:path";

import { hash } from "@node-rs/argon2";
import {
  request as playwrightRequest,
  type FullConfig,
} from "@playwright/test";
import pg from "pg";

// Resolve relative to the project root rather than __dirname/import.meta.url —
// Playwright's TS loader runs files as CJS without `"type":"module"`, and
// loading either dirname helper at module scope crashes the test runner.
// The repo layout puts this file at e2e/setup/global-setup.ts so we use
// process.cwd() (== project root for `pnpm e2e`).
export const STORAGE_STATE_PATH = resolve(
  process.cwd(),
  "e2e/setup/storageState.json",
);

export const E2E_USER = {
  email: "e2e@healthlog.test",
  username: "e2e-tester",
  password: "ZJ4hN8x!Pq3vMr2C", // 16 chars, passes zxcvbn min-score-3 gate
  role: "ADMIN",
} as const;

/**
 * v1.36.0 — the SECOND account, so account sharing has two sides to test.
 *
 * Sharing is the one feature in the product that cannot be exercised by one
 * person: somebody has to own a record and somebody else has to be given it.
 * This account owns the record; `E2E_USER` is the delegate throughout the
 * sharing spec.
 */
export const E2E_OWNER = {
  email: "e2e-owner@healthlog.test",
  username: "e2e-owner",
  password: "Qv7bR2n!Ks9wLd4T",
  role: "USER",
} as const;

/**
 * Weights seeded one per account, chosen so neither can be mistaken for the
 * other in rendered markup and neither collides with a value any other spec
 * writes.
 *
 * The delegate's number is the whole point of the stale-paint check: after
 * switching into the owner's record it must appear NOWHERE, at no moment. A
 * spec that only waited for the owner's data to arrive would prove nothing
 * about what was on screen in between.
 */
export const E2E_DELEGATE_MARKER_KG = 77.7;
export const E2E_OWNER_MARKER_KG = 63.3;

export const OWNER_STORAGE_STATE_PATH = resolve(
  process.cwd(),
  "e2e/setup/storageStateOwner.json",
);

/**
 * A SECOND cookie jar for the same delegate account, and the reason it exists
 * is the one property that makes account switching work at all: the switch is
 * stamped on the session row, not held in the tab. Every session opened from
 * `STORAGE_STATE_PATH` is therefore the same session — so a spec that switches
 * that jar into somebody else's record switches it for every spec that
 * authenticates with it, whichever of them happens to be mid-navigation on the
 * other worker.
 *
 * The symptom is a wandering one: `/settings/ai` painting "Not part of shared
 * access", an axe scan reading a banner nobody asked for, a `waitForResponse`
 * on a request the refused surface never sends. Nothing in the failing spec is
 * wrong and nothing in its file explains it.
 *
 * So the journey that switches gets its own login, and the shared jar is never
 * pointed anywhere. Same account, different session row, no overlap.
 */
export const DELEGATE_STORAGE_STATE_PATH = resolve(
  process.cwd(),
  "e2e/setup/storageStateDelegate.json",
);

async function hashPassword(password: string): Promise<string> {
  return hash(password, {
    memoryCost: 19456,
    timeCost: 2,
    outputLen: 32,
    parallelism: 1,
  });
}

function cuid(): string {
  // Match Prisma's default cuid format closely enough that downstream
  // queries that filter on `id LIKE 'c%'` (none currently) keep working.
  const chars = "abcdefghijklmnopqrstuvwxyz0123456789";
  let id = "c";
  for (let i = 0; i < 24; i++) {
    id += chars[Math.floor(Math.random() * chars.length)];
  }
  return id;
}

export default async function globalSetup(config: FullConfig): Promise<void> {
  const url = process.env.DATABASE_URL;
  if (!url) {
    throw new Error(
      "[e2e/global-setup] DATABASE_URL is not set — Playwright cannot seed the test user.",
    );
  }

  const pool = new pg.Pool({ connectionString: url });

  try {
    const passwordHash = await hashPassword(E2E_USER.password);
    const now = new Date();
    const dob = new Date("1985-06-15T00:00:00.000Z");

    // Postgres-native upsert keyed on the unique username column. The
    // SET clause clears any leftover Codex / insights state from a
    // previous run so the "Settings → AI" spec sees the disconnected
    // baseline; we also stamp `onboarding_completed_at` so the auth
    // shell does not bounce the user to /onboarding, AND set
    // `onboarding_tour_completed = true` so the spotlight tour does
    // NOT auto-launch on the dashboard. Without that flag the tour
    // mounts a full-viewport `role="dialog"` overlay with `z-index:200`
    // that intercepts every pointer event — every authenticated spec
    // that tries to click a header / sidebar / quick-add button times
    // out (50+ failed CI runs since v1.4.13). Specs that need the
    // tour can opt back in by mocking `/api/auth/me`.
    // Nutrients is intentionally opt-in in production. The shared fixture
    // enables it because the water-capture specs exercise that real gate.
    await pool.query(
      `INSERT INTO users
        (id, username, email, password_hash, role,
         created_at, updated_at,
         height_cm, date_of_birth, gender,
         codex_connection_status,
         insights_privacy_mode,
         onboarding_completed_at,
         onboarding_tour_completed,
         module_preferences_json)
       VALUES ($1, $2, $3, $4, $5,
               $6, $6,
               180, $7, 'MALE',
               'disconnected',
               'aggregated',
               $6,
               true,
               '{"nutrients":true}'::jsonb)
       ON CONFLICT (username) DO UPDATE SET
         email = EXCLUDED.email,
         password_hash = EXCLUDED.password_hash,
         role = EXCLUDED.role,
         updated_at = EXCLUDED.updated_at,
         height_cm = EXCLUDED.height_cm,
         date_of_birth = EXCLUDED.date_of_birth,
         gender = EXCLUDED.gender,
         codex_access_token_encrypted = NULL,
         codex_refresh_token_encrypted = NULL,
         codex_token_expires_at = NULL,
         codex_connected_at = NULL,
         codex_connection_status = 'disconnected',
         insights_cached_at = NULL,
         insights_cached_text = NULL,
         onboarding_completed_at = EXCLUDED.onboarding_completed_at,
         onboarding_tour_completed = EXCLUDED.onboarding_tour_completed,
         module_preferences_json = EXCLUDED.module_preferences_json`,
      [
        cuid(),
        E2E_USER.username,
        E2E_USER.email,
        passwordHash,
        E2E_USER.role,
        now,
        dob,
      ],
    );

    // Repeated local E2E runs reuse the same seeded account and database.
    // Its owner-scoped share-link bucket lasts an hour, so otherwise the third
    // run can start above the 20-operation ceiling and fail before exercising
    // the share flow. Reset only this fixture user's bucket; never touch
    // unrelated rate-limit state in a developer database.
    await pool.query(
      `DELETE FROM rate_limits
       WHERE key = 'share-link:' || (
         SELECT id::text FROM users WHERE username = $1
       )`,
      [E2E_USER.username],
    );

    // Opt the seed account into cycle tracking. The user is seeded as
    // `MALE`, and v1.18.0 resolves the `cycle` module through
    // `isCycleEnabled(gender, CycleProfile)` — NULL `cycleTrackingEnabled`
    // derives from gender, so a male account with no profile reads as
    // cycle-OFF and `/cycle` redirects home. An explicit `true` opts the
    // account in regardless of gender, which is what the cycle spec needs.
    // Keyed by the username subquery so we never depend on the cuid above
    // (the user upsert may have hit the ON CONFLICT path on a re-run).
    await pool.query(
      `INSERT INTO cycle_profiles
        (id, user_id, cycle_tracking_enabled, created_at, updated_at)
       SELECT $1, u.id, true, $2, $2
       FROM users u
       WHERE u.username = $3
       ON CONFLICT (user_id) DO UPDATE SET
         cycle_tracking_enabled = true,
         updated_at = EXCLUDED.updated_at`,
      [cuid(), now, E2E_USER.username],
    );

    // ── v1.36.0 — the sharing fixture ────────────────────────────────────
    //
    // A second account, one distinctive weight in each record, and a clean
    // grant table. The reset matters as much as the seed: grants and switch
    // stamps outlive a run, and a second run starting with the delegate
    // already inside the owner's record would skip the invitation half of
    // the journey while still going green.
    await pool.query(
      `INSERT INTO users
        (id, username, email, password_hash, role,
         created_at, updated_at,
         onboarding_completed_at, onboarding_tour_completed)
       VALUES ($1, $2, $3, $4, 'USER', $5, $5, $5, true)
       ON CONFLICT (username) DO UPDATE SET
         email = EXCLUDED.email,
         password_hash = EXCLUDED.password_hash,
         updated_at = EXCLUDED.updated_at,
         onboarding_completed_at = EXCLUDED.onboarding_completed_at,
         onboarding_tour_completed = EXCLUDED.onboarding_tour_completed`,
      [
        cuid(),
        E2E_OWNER.username,
        E2E_OWNER.email,
        await hashPassword(E2E_OWNER.password),
        now,
      ],
    );

    // Every grant between the pair, and any switch stamp either of them is
    // carrying. Deleted rather than revoked: this is fixture hygiene, not a
    // lifecycle transition, and a revoked row would still show in the panel.
    await pool.query(
      `DELETE FROM account_grants
       WHERE grantor_id IN (SELECT id FROM users WHERE username = ANY($1))
          OR grantee_id IN (SELECT id FROM users WHERE username = ANY($1))`,
      [[E2E_USER.username, E2E_OWNER.username]],
    );
    await pool.query(
      `UPDATE sessions SET acting_as_user_id = NULL
       WHERE user_id IN (SELECT id FROM users WHERE username = ANY($1))`,
      [[E2E_USER.username, E2E_OWNER.username]],
    );
    await pool.query(
      `DELETE FROM rate_limits
       WHERE key LIKE 'sharing:%'`,
    );

    // The login bucket, for the same reason. This setup signs in THREE times
    // now (the shared jar, the owner, and the sharing journey's own delegate
    // jar), and the ceiling is five attempts per IP per quarter-hour — so two
    // local runs in a row would otherwise end with a 429 from the fixture
    // rather than a failure from the product. Only the auth surfaces' own
    // buckets are cleared; nothing else in the table is touched.
    await pool.query(`DELETE FROM rate_limits WHERE key LIKE 'auth:%'`);

    // One marker weight per record. Re-seeded by delete-then-insert so a
    // re-run cannot accumulate duplicates and so an edited constant takes
    // effect rather than sitting beside the old value.
    for (const [username, kg] of [
      [E2E_USER.username, E2E_DELEGATE_MARKER_KG],
      [E2E_OWNER.username, E2E_OWNER_MARKER_KG],
    ] as const) {
      await pool.query(
        `DELETE FROM measurements
         WHERE user_id = (SELECT id FROM users WHERE username = $1)
           AND external_id = 'e2e-sharing-marker'`,
        [username],
      );
      await pool.query(
        `INSERT INTO measurements
          (id, user_id, type, value, unit, source, measured_at,
           external_id, created_at, updated_at)
         SELECT $1, u.id, 'WEIGHT', $2, 'kg', 'MANUAL', $3,
                'e2e-sharing-marker', $3, $3
         FROM users u WHERE u.username = $4`,
        [cuid(), kg, now, username],
      );
    }

    // Console (instead of structured logging) is intentional here —
    // global-setup runs outside the app's logging context, and the
    // line is useful when debugging a CI failure where the seed didn't
    // commit.
    console.log(
      `[e2e/global-setup] seeded user ${E2E_USER.username} (${E2E_USER.email})`,
    );
  } finally {
    await pool.end();
  }

  // Log the fixture accounts in here and persist their cookie jars so specs
  // can reuse them via `test.use({ storageState })`. This is the documented
  // Playwright pattern (`docs/auth.md`) and the only way to avoid the per-spec
  // login + rate-limit dance.
  const baseURL =
    config.projects[0]?.use.baseURL ??
    process.env.E2E_BASE_URL ??
    "http://localhost:3000";

  // The shared jar every authenticated spec reads.
  await captureAuthState(baseURL, E2E_USER, STORAGE_STATE_PATH);

  // v1.36.0 — the owner's jar. The sharing journey needs both sides of a grant
  // signed in at once, and the login endpoint is IP-rate-limited, so the owner
  // is logged in here rather than inside the spec.
  await captureAuthState(baseURL, E2E_OWNER, OWNER_STORAGE_STATE_PATH);

  // The delegate's own jar for that journey. Same account as the shared one,
  // deliberately a different session row — see DELEGATE_STORAGE_STATE_PATH for
  // what happens when the journey switches the shared row instead.
  await captureAuthState(baseURL, E2E_USER, DELEGATE_STORAGE_STATE_PATH);
}

/**
 * Log one account in and write its cookie jar to `path`.
 *
 * Each call mints a fresh session row, so two jars for the same account are
 * two independent browser sessions — which is the whole point of the delegate
 * jar above.
 *
 * Only the cookies the auth shell needs survive the filter. v1.4.22 C4 added
 * `hl_onboarding`: the login route sets it to "pending" for a new account and
 * DELETES it for an already-onboarded one, so for these pre-seeded accounts it
 * is absent and the proxy passes the dashboard through.
 *
 * v1.27.11 — the locale cookie is pinned to English rather than inherited. The
 * server honours `User.locale` when the cookie is absent (the ITP fix), and
 * the locale-switch spec mirrors its German pick into the SHARED account's
 * profile — without this cookie every spec running after it would render
 * German and the English-string assertions would fail. The cookie sits at the
 * top of the resolution ladder, so each spec context stays deterministically
 * English; locale-switch overrides it inside its own context only.
 */
async function captureAuthState(
  baseURL: string,
  account: { username: string; password: string },
  path: string,
): Promise<void> {
  const ctx = await playwrightRequest.newContext({ baseURL });
  try {
    const res = await ctx.post("/api/auth/login", {
      data: { email: account.username, password: account.password },
    });
    if (res.status() !== 200) {
      const body = await res.text();
      throw new Error(
        `[e2e/global-setup] login failed for ${account.username}: HTTP ${res.status()} — ${body.slice(0, 200)}`,
      );
    }
    const state = await ctx.storageState();
    state.cookies = state.cookies.filter((c) =>
      ["healthlog_session", "hl_onboarding"].includes(c.name),
    );
    state.cookies.push({
      name: "healthlog-locale",
      value: "en",
      domain: new URL(baseURL).hostname,
      path: "/",
      expires: Math.floor(Date.now() / 1000) + 60 * 60 * 24 * 365,
      httpOnly: false,
      secure: false,
      sameSite: "Lax",
    });
    await writeFile(path, JSON.stringify(state, null, 2));
    console.log(`[e2e/global-setup] auth state captured to ${path}`);
  } finally {
    await ctx.dispose();
  }
}