/**
 * @file Tests server/lib/privacy.js — the secret patterns (each shape redacted,
 * look-alikes such as `max_tokens: 5` left alone), secret-named JSON keys, the
 * payload entry point being a byte-identical no-op while off or when nothing
 * matched, `trim_event_data` redacting before it trims, and the ignored-folder
 * list's path-boundary match and validation.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

const { describe, it, beforeEach, afterEach } = require("node:test");
const assert = require("node:assert/strict");
const path = require("node:path");
const privacy = require("../lib/privacy");
const { trimEventData } = require("../lib/event-payload");

const R = privacy.REDACTED;

describe("redactText", () => {
  const cases = [
    ["anthropic key", "key sk-ant-api03-AbCdEfGhIjKlMnOpQrStUv here", `key ${R} here`],
    ["openai key", "OPENAI sk-proj-AbCdEfGhIjKlMnOpQrStUvWx", `OPENAI ${R}`],
    ["github token", "ghp_0123456789abcdefghijABCDEFGHIJ", R],
    ["aws key id", "id AKIAABCDEFGHIJKLMNOP", `id ${R}`],
    ["slack", "xoxb-1234567890-abcdef", R],
    [
      "bearer header",
      "curl -H 'Authorization: Bearer abc.def-ghi_jkl'",
      `curl -H 'Authorization: Bearer ${R}'`,
    ],
    ["password assignment", "mysql password=hunter22 -h db", `mysql password=${R} -h db`],
    ["env token", "export GITHUB_TOKEN=abcd1234efgh", `export GITHUB_TOKEN=${R}`],
    ["json-ish key", '{"api_key": "abcd1234"}', `{"api_key": ${R}}`],
    [
      "private key",
      "a\n-----BEGIN OPENSSH PRIVATE KEY-----\nb3BlbnNzaA\n-----END OPENSSH PRIVATE KEY-----\nz",
      `a\n${R}\nz`,
    ],
  ];
  for (const [name, input, want] of cases) {
    it(`redacts ${name}`, () => assert.equal(privacy.redactText(input), want));
  }

  it("leaves look-alikes alone", () => {
    for (const s of [
      "max_tokens: 4096",
      "token_count=5 input_tokens: 9",
      "the author wrote a secretive note",
      "sk-short",
      "Bearer of bad news",
    ]) {
      assert.equal(privacy.redactText(s), s);
    }
  });

  it("is idempotent", () => {
    const once = privacy.redactText("password=hunter22 and ghp_0123456789abcdefghijABCDEFGHIJ");
    assert.equal(privacy.redactText(once), once);
  });

  it("stays linear on a pathological run", () => {
    const t = Date.now();
    privacy.redactText("a-".repeat(200_000));
    assert.ok(Date.now() - t < 2000);
  });
});

describe("redactValue", () => {
  it("redacts any string under a secret-named key, whatever it looks like", () => {
    const out = privacy.redactValue({
      tool_input: { env: { DB_PASSWORD: "x", API_KEY: "y", max_tokens: "5", authorization: "z" } },
      author: "me",
    });
    assert.deepEqual(out, {
      tool_input: { env: { DB_PASSWORD: R, API_KEY: R, max_tokens: "5", authorization: R } },
      author: "me",
    });
  });
});

describe("redactEventJson / trim_event_data", () => {
  let saved;
  beforeEach(() => {
    saved = process.env[privacy.REDACT_KEY];
  });
  afterEach(() => {
    if (saved === undefined) delete process.env[privacy.REDACT_KEY];
    else process.env[privacy.REDACT_KEY] = saved;
  });
  const payload = JSON.stringify({
    session_id: "s",
    tool_input: { command: "curl -H 'Authorization: Bearer abcdefgh12345678' x" },
  });

  it("is a byte-identical no-op while off", () => {
    delete process.env[privacy.REDACT_KEY];
    assert.equal(privacy.redactEventJson(payload), payload);
    assert.equal(trimEventData(payload), payload);
  });

  it("redacts and counts when on, and leaves a clean payload byte-identical", () => {
    process.env[privacy.REDACT_KEY] = "1";
    const out = JSON.parse(trimEventData(payload));
    assert.equal(out.tool_input.command, `curl -H 'Authorization: Bearer ${R}' x`);
    assert.equal(out._redacted, 1);
    const clean = JSON.stringify({ session_id: "s", tool_input: { command: "ls" } });
    assert.equal(trimEventData(clean), clean);
  });

  it("redacts a private key before the trim could cut it in two", () => {
    process.env[privacy.REDACT_KEY] = "1";
    const key = `-----BEGIN RSA PRIVATE KEY-----\n${"A".repeat(20_000)}\n-----END RSA PRIVATE KEY-----`;
    const json = JSON.stringify({ tool_name: "Read", tool_response: { file: { text: key } } });
    const out = trimEventData(json);
    assert.ok(!out.includes("AAAAAAAAAA"));
    assert.ok(out.includes(R));
  });

  it("leaves summaries alone while off", () => {
    delete process.env[privacy.REDACT_KEY];
    assert.equal(privacy.redactSummary("password=hunter22"), "password=hunter22");
    process.env[privacy.REDACT_KEY] = "1";
    assert.equal(privacy.redactSummary("password=hunter22"), `password=${R}`);
  });
});

describe("ignored folders", () => {
  const env = (list) => ({ [privacy.IGNORE_KEY]: list.join(path.delimiter) });

  it("matches the folder and what lies under it, never a sibling sharing the prefix", () => {
    const e = env(["/work/secret", "/tmp/x/"]);
    assert.equal(privacy.isIgnoredCwd("/work/secret", e), true);
    assert.equal(privacy.isIgnoredCwd("/work/secret/app", e), true);
    assert.equal(privacy.isIgnoredCwd("/work/secret-two", e), false);
    assert.equal(privacy.isIgnoredCwd("/tmp/x/y", e), true);
    assert.equal(privacy.isIgnoredCwd("/work", e), false);
    assert.equal(privacy.isIgnoredCwd(undefined, e), false);
    assert.equal(privacy.isIgnoredCwd("/anything", {}), false);
  });

  it("never treats a root or a relative entry as a folder to ignore", () => {
    assert.deepEqual(privacy.ignoredCwds(env(["/", "rel/dir", "/ok"])).length, 2);
    assert.equal(privacy.isIgnoredCwd("/home/u", env(["/"])), false);
  });

  it("validates the Settings list", () => {
    assert.deepEqual(privacy.validateIgnoreList(["/a/b/", " /a/b ", "", "/c"]), ["/a/b", "/c"]);
    assert.throws(() => privacy.validateIgnoreList(["relative"]), { code: "EBADPATH" });
    assert.throws(() => privacy.validateIgnoreList(["/"]), { code: "EBADPATH" });
    assert.throws(() => privacy.validateIgnoreList([`/a${path.delimiter}/b`]), {
      code: "EBADPATH",
    });
    assert.throws(() => privacy.validateIgnoreList(["/a\nb"]), { code: "EBADPATH" });
    assert.throws(() => privacy.validateIgnoreList("/a"), { code: "EBADPATH" });
  });
});