import assert from "node:assert/strict";
import { readFileSync } from "node:fs";
import test from "node:test";
import React from "react";

import { AccountDeletionGate } from "../src/components/account-deletion-gate";
import { AccountDeletionSection } from "../src/components/account-deletion-section";
import {
  ACCOUNT_DELETION_KEPT_TABLES,
  accountDeletionRequestErrorCode,
  formatAccountDeletionDate,
  isAccountDeletionConfirmation,
  parseAccountDeletionStatus,
  readPendingAccountDeletionWith,
} from "../src/lib/account-deletion";
import {
  ACCOUNT_DELETION_MAX_ATTEMPTS,
  purgeErrorCode,
  runAccountDeletionTick,
} from "../src/lib/account-deletion-worker-core";
import { LEGAL_ENTITY } from "../src/lib/legal-entity";
import { createClientLifecycleHarness } from "./react-client-lifecycle-test-support";

// Self-service account deletion with a 7-day cooling-off period (2026-09-30).
Object.assign(globalThis, { React });
const read = (path: string) => readFileSync(new URL(path, import.meta.url), "utf8");
const migration = read("../supabase/migrations/20260930020000_account_deletion_requests.sql");

test("status parsing, confirmation word, date and error codes", () => {
  assert.deepEqual(parseAccountDeletionStatus(null), { status: "none" });
  assert.deepEqual(parseAccountDeletionStatus({ status: "none" }), { status: "none" });
  assert.deepEqual(parseAccountDeletionStatus({ status: "pending", scheduledFor: "not a date" }), { status: "none" });
  const pending = parseAccountDeletionStatus({ status: "pending", requestedAt: "2026-09-30T02:00:00Z", scheduledFor: "2026-10-07T02:00:00Z" });
  assert.deepEqual(pending, { status: "pending", requestedAt: "2026-09-30T02:00:00.000Z", scheduledFor: "2026-10-07T02:00:00.000Z" });
  assert.equal(formatAccountDeletionDate("2026-10-07T02:00:00Z"), "10 月 7 日");
  assert.equal(formatAccountDeletionDate("2026-10-06T17:00:00Z"), "10 月 7 日", "Beijing date, not UTC");
  assert.equal(isAccountDeletionConfirmation(" 注销 "), true);
  assert.equal(isAccountDeletionConfirmation("注 销"), false);
  assert.equal(isAccountDeletionConfirmation(undefined), false);
  assert.equal(accountDeletionRequestErrorCode("ERROR: account_deletion_admin_account"), "admin_account");
  assert.equal(accountDeletionRequestErrorCode("connection refused"), "unavailable");
});

test("the pending-deletion read never locks anyone out on an error", async () => {
  const ok = { rpc: async () => ({ data: "2026-10-07T02:00:00Z", error: null }) };
  assert.equal(await readPendingAccountDeletionWith(ok, "u"), "2026-10-07T02:00:00.000Z");
  assert.equal(await readPendingAccountDeletionWith({ rpc: async () => ({ data: null, error: null }) }, "u"), null);
  assert.equal(await readPendingAccountDeletionWith({ rpc: async () => ({ data: null, error: { message: "function does not exist" } }) }, "u"), null);
  assert.equal(await readPendingAccountDeletionWith({ rpc: async () => { throw new Error("down"); } }, "u"), null);
});

test("the kept tables in code and in SQL are the same list, and finance is kept", () => {
  const sqlList = migration.slice(migration.indexOf("select array["), migration.indexOf("]::text[]"));
  const sqlTables = [...sqlList.matchAll(/'([a-z_]+)'/g)].map((match) => match[1]);
  assert.deepEqual(sqlTables, [...ACCOUNT_DELETION_KEPT_TABLES]);
  // 2026-09-30 合并时加入：反馈与投诉保留（产品决定），联系方式在清除时置空。
  assert.match(migration, /'user_feedback'/);
  assert.match(migration, /update public\.user_feedback set contact = null/);
  for (const table of ["payment_orders", "credit_transactions", "usage_ledger", "usage_reservations", "user_subscriptions", "birth_time_rectification_billing"]) {
    assert.ok((ACCOUNT_DELETION_KEPT_TABLES as readonly string[]).includes(table), table);
  }
  for (const table of ["chat_sessions", "chart_profiles", "personal_reports", "synastry_reports", "profiles"]) {
    assert.ok(!(ACCOUNT_DELETION_KEPT_TABLES as readonly string[]).includes(table), `${table} is deleted`);
  }
});

test("the migration is add-only, all-or-nothing, and only touches ownership columns", () => {
  assert.doesNotMatch(migration, /\bdrop\s+(table|column)\b|alter\s+table\s+public\.(?!account_deletion_requests)\w+\s+(drop|alter|rename)/i);
  assert.match(migration, /create table if not exists public\.account_deletion_requests/);
  assert.match(migration, /now\(\) \+ interval '7 days'/);
  // Signed out everywhere on request.
  assert.match(migration, /delete from identity\.sessions where user_id = \$1/);
  // Deletes keep retrying across passes; leftovers roll the whole thing back.
  assert.match(migration, /exception when foreign_key_violation/);
  assert.match(migration, /raise exception 'account_deletion_purge_incomplete/);
  // created_by / updated_by rows are operators' configuration, never the user's.
  assert.match(migration, /att\.attname = 'user_id' or \(cls\.relname = 'profiles' and att\.attname = 'id'\)/);
  // Tombstone identity: no email, name, login.
  assert.match(migration, /email = ''deleted\+'' \|\| id::text \|\| ''@deleted\.invalid''/);
  assert.match(migration, /delete from identity\.accounts where user_id = \$1/);
  // No charge while pending, enforced in the database too.
  for (const table of ["usage_reservations", "birth_time_rectification_billing", "credit_transactions"]) {
    assert.match(migration, new RegExp(`before insert on public\\.${table}`), table);
  }
  assert.match(migration, /raise exception 'account_deletion_admin_account'/);
});

test("the purge worker completes, skips, counts failures and logs no identifiers", async () => {
  const logs: string[] = [];
  const failed: [string, string][] = [];
  const seen: { limit: number; attempts: number }[] = [];
  const result = await runAccountDeletionTick({
    now: () => new Date("2026-10-08T00:00:00Z"),
    listDue: async (_now, limit, attempts) => { seen.push({ limit, attempts }); return ["r1", "r2", "r3"]; },
    purge: async (id) => (id === "r1" ? { ok: true, status: "completed" } : id === "r2" ? { ok: true, status: "skipped" } : { ok: false, code: "purge_incomplete" }),
    markFailed: async (id, code) => { failed.push([id, code]); },
    log: (line) => logs.push(line),
  });
  assert.deepEqual(result, { due: 3, completed: 1, skipped: 1, failed: 1 });
  assert.deepEqual(failed, [["r3", "purge_incomplete"]]);
  assert.equal(seen[0]?.attempts, ACCOUNT_DELETION_MAX_ATTEMPTS);
  assert.equal(logs.length, 1);
  assert.doesNotMatch(logs[0]!, /r1|r2|r3|@/);
  assert.equal(purgeErrorCode("account_deletion_purge_incomplete: chat_sessions"), "purge_incomplete");
  assert.equal(purgeErrorCode("boom"), "purge_failed");
  const quiet: string[] = [];
  await runAccountDeletionTick({ now: () => new Date(), listDue: async () => [], purge: async () => ({ ok: true, status: "completed" }), markFailed: async () => {}, log: (line) => quiet.push(line) });
  assert.deepEqual(quiet, [], "an idle tick says nothing");
});

test("every paid route refuses a frozen account before doing work", () => {
  for (const path of [
    "../src/app/api/consult/route.ts",
    "../src/app/api/reports/route.ts",
    "../src/app/api/rectification/agent/route.ts",
    "../src/app/api/rectification/cases/open/route.ts",
    "../src/app/api/synastry/route.ts",
  ]) {
    const source = read(path);
    assert.match(source, /refuseWhenAccountDeletionPending\(/, path);
    assert.match(source, /if \(frozen\) return frozen;/, path);
  }
  const server = read("../src/lib/account-deletion-server.ts");
  assert.match(server, /status: 423/);
  assert.match(read("../src/instrumentation.ts"), /startAccountDeletionWorker\(\);/);
});

test("the settings section explains the rule and only submits after 「注销」 is typed", async () => {
  const h = createClientLifecycleHarness();
  try {
    await h.render(<AccountDeletionSection />);
    const open = h.elements().find((node) => node.tagName === "BUTTON" && node.text.startsWith("注销账号"))!;
    await h.event(open);
    const text = h.container.text;
    assert.match(text, /7 天内重新登录可以撤销/);
    assert.match(text, /剩余点数和会员权益会一并作废/);
    assert.match(text, /订单和点数流水按法规保留/);
    assert.ok(text.includes(LEGAL_ENTITY.contactEmail));
    const confirm = () => h.elements().find((node) => node.tagName === "BUTTON" && /确认注销|正在提交/.test(node.text))!;
    assert.equal(confirm().disabled, true);
    const input = h.elements().find((node) => node.tagName === "INPUT")!;
    await h.event(input, "onChange", { target: { value: "注销" } });
    assert.equal(confirm().disabled, false);
    assert.deepEqual(h.errors, []);
  } finally { await h.close(); }
});

test("a pending account sees 「账号注销中」 with the date and a way back", async () => {
  const originalFetch = globalThis.fetch;
  globalThis.fetch = (async () => new Response(JSON.stringify({ status: "pending", scheduledFor: "2026-10-07T02:00:00Z" }), { status: 200 })) as typeof fetch;
  const h = createClientLifecycleHarness();
  try {
    await h.render(<AccountDeletionGate signedIn />);
    await h.idle();
    assert.match(h.container.text, /账号注销中/);
    assert.match(h.container.text, /10 月 7 日 永久删除/);
    assert.ok(h.elements().some((node) => node.tagName === "BUTTON" && node.text === "撤销注销"));
    assert.ok(h.elements().some((node) => node.tagName === "BUTTON" && node.text === "退出登录"));
    await h.render(<AccountDeletionGate signedIn={false} />);
  } finally {
    globalThis.fetch = originalFetch;
    await h.close();
  }
  const signedOut = createClientLifecycleHarness();
  let calls = 0;
  globalThis.fetch = (async () => { calls += 1; return new Response("{}"); }) as typeof fetch;
  try {
    await signedOut.render(<AccountDeletionGate signedIn={false} />);
    await signedOut.idle();
    assert.equal(calls, 0, "no request before sign-in");
    assert.equal(signedOut.container.text, "");
  } finally {
    globalThis.fetch = originalFetch;
    await signedOut.close();
  }
});