import { describe, it, afterEach } from 'node:test';
import assert from 'node:assert/strict';
import { readdirSync, readFileSync } from 'fs';
import { join } from 'path';
import { runHook, setupTestDir, cleanupTestDir } from './test-helper.mjs';

let dir;
afterEach(() => { if (dir) cleanupTestDir(dir); });

function readAllFiles(dirPath) {
  let content = '';
  for (const entry of readdirSync(dirPath, { withFileTypes: true })) {
    const full = join(dirPath, entry.name);
    if (entry.isDirectory()) {
      content += readAllFiles(full);
    } else {
      content += readFileSync(full, 'utf8');
    }
  }
  return content;
}

describe('privacy', () => {
  it('never writes prompt text to disk through full lifecycle', () => {
    dir = setupTestDir();
    const canary = 'CANARY_PRIVACY_xyz123';

    // 1. Session start
    runHook('session-start.mjs', { session_id: 'priv1', cwd: '/tmp' }, dir);

    // 2. Prompt analysis with canary as prompt text
    runHook('prompt-analyzer.mjs', { session_id: 'priv1', prompt: `tell me what to do ${canary} am I right?` }, dir);

    // 3. Tool tracking
    runHook('tool-tracker.mjs', { session_id: 'priv1', tool_name: 'Edit' }, dir);

    // 4. Session end
    runHook('session-end.mjs', { session_id: 'priv1', cwd: '/tmp' }, dir);

    // Read ALL files recursively — canary must not appear anywhere
    const allContent = readAllFiles(dir);
    assert.ok(!allContent.includes(canary), `Canary "${canary}" found in data files — privacy violation`);
  });

  it('never leaks matched-pattern phrases through full lifecycle', () => {
    dir = setupTestDir();
    const matchedPhrase = 'are you sure';
    const canary = 'CANARY_PRIVACY_xyz123';
    const prompt = `${matchedPhrase}? ${canary}`;

    runHook('session-start.mjs', { session_id: 'priv2', cwd: '/tmp' }, dir);
    runHook('prompt-analyzer.mjs', { session_id: 'priv2', prompt }, dir);
    runHook('tool-tracker.mjs', { session_id: 'priv2', tool_name: 'Edit' }, dir);
    runHook('session-end.mjs', { session_id: 'priv2', cwd: '/tmp' }, dir);

    const allContent = readAllFiles(dir);
    assert.ok(
      !allContent.includes(canary),
      `Canary "${canary}" leaked — pattern-match did not protect prompt text`
    );
    assert.ok(
      !allContent.toLowerCase().includes(matchedPhrase),
      `Matched phrase "${matchedPhrase}" leaked — pattern name or trigger phrase written to disk`
    );
  });

  // v1.2 detector canaries — one per new detector category, plus matched-phrase
  // variants for new pattern phrases that must never reach disk verbatim.

  it('user-info detector: yes_people canary never leaks', () => {
    dir = setupTestDir();
    const matchedPhrase = 'my therapist';
    const canary = 'CANARY_USERINFO_PEOPLE_xyz123';
    const prompt = `${matchedPhrase} suggested I journal more — ${canary}`;

    runHook('session-start.mjs', { session_id: 'pv12a', cwd: '/tmp' }, dir);
    runHook('prompt-analyzer.mjs', { session_id: 'pv12a', prompt }, dir);
    runHook('tool-tracker.mjs', { session_id: 'pv12a', tool_name: 'Edit' }, dir);
    runHook('session-end.mjs', { session_id: 'pv12a', cwd: '/tmp' }, dir);

    const allContent = readAllFiles(dir);
    assert.ok(!allContent.includes(canary),
      `Canary "${canary}" leaked through user-info detector`);
    assert.ok(!allContent.toLowerCase().includes(matchedPhrase),
      `Matched phrase "${matchedPhrase}" leaked through user-info detector`);
  });

  it('user-info detector: yes_digital canary never leaks', () => {
    dir = setupTestDir();
    const matchedPhrase = 'I googled';
    const canary = 'CANARY_USERINFO_DIGITAL_xyz123';
    const prompt = `${matchedPhrase} this issue and got nothing — ${canary}`;

    runHook('session-start.mjs', { session_id: 'pv12b', cwd: '/tmp' }, dir);
    runHook('prompt-analyzer.mjs', { session_id: 'pv12b', prompt }, dir);
    runHook('session-end.mjs', { session_id: 'pv12b', cwd: '/tmp' }, dir);

    const allContent = readAllFiles(dir);
    assert.ok(!allContent.includes(canary));
    assert.ok(!allContent.toLowerCase().includes(matchedPhrase.toLowerCase()));
  });

  it('user-info detector: "no" isolation canary never leaks', () => {
    dir = setupTestDir();
    const matchedPhrase = "haven't told anyone";
    const canary = 'CANARY_USERINFO_NO_xyz123';
    const prompt = `I ${matchedPhrase} about it ${canary}`;

    runHook('session-start.mjs', { session_id: 'pv12c', cwd: '/tmp' }, dir);
    runHook('prompt-analyzer.mjs', { session_id: 'pv12c', prompt }, dir);
    runHook('session-end.mjs', { session_id: 'pv12c', cwd: '/tmp' }, dir);

    const allContent = readAllFiles(dir);
    assert.ok(!allContent.includes(canary));
    assert.ok(!allContent.toLowerCase().includes(matchedPhrase));
  });

  it('valseek detector canary never leaks', () => {
    dir = setupTestDir();
    const matchedPhrase = 'am I crazy';
    const canary = 'CANARY_VALSEEK_xyz123';
    const prompt = `${matchedPhrase} for thinking this — ${canary}`;

    runHook('session-start.mjs', { session_id: 'pv12d', cwd: '/tmp' }, dir);
    runHook('prompt-analyzer.mjs', { session_id: 'pv12d', prompt }, dir);
    runHook('session-end.mjs', { session_id: 'pv12d', cwd: '/tmp' }, dir);

    const allContent = readAllFiles(dir);
    assert.ok(!allContent.includes(canary));
    assert.ok(!allContent.toLowerCase().includes(matchedPhrase));
  });

  it('domain detector (legal): canary never leaks despite domain hit', () => {
    dir = setupTestDir();
    const matchedPhrase = 'my lawyer';
    const canary = 'CANARY_DOMAIN_LEGAL_xyz123';
    const prompt = `talked to ${matchedPhrase} about it ${canary}`;

    runHook('session-start.mjs', { session_id: 'pv12e', cwd: '/tmp' }, dir);
    runHook('prompt-analyzer.mjs', { session_id: 'pv12e', prompt }, dir);
    runHook('session-end.mjs', { session_id: 'pv12e', cwd: '/tmp' }, dir);

    const allContent = readAllFiles(dir);
    assert.ok(!allContent.includes(canary),
      `Canary "${canary}" leaked through legal domain detector`);
    assert.ok(!allContent.toLowerCase().includes(matchedPhrase),
      `Matched phrase "${matchedPhrase}" leaked through legal domain detector`);
  });
});