// Preservation Tests — AES-GCM Credential Round-Trip
// Task 2: 確認基線行為（修復前執行，預期通過）
//
// **Validates: Requirements 3.9**

import { SELF } from 'cloudflare:test';
import { describe, it, expect } from 'vitest';
import * as fc from 'fast-check';

// ─────────────────────────────────────────────────────────────────────────────
// Property: Credential round-trip
//
// For all non-zero credential name/secret pairs,
// POST /credentials → GET /credentials/:name/secret returns the same secret.
// This validates AES-GCM encrypt → decrypt round-trip correctness.
//
// **Validates: Requirements 3.9**
// ─────────────────────────────────────────────────────────────────────────────

describe('Preservation: AES-GCM credential round-trip', () => {
  it('property: POST /credentials then GET /credentials/:name/secret returns original secret', async () => {
    // Generate non-empty name and secret pairs
    const nameArb = fc.string({ minLength: 1, maxLength: 30 }).filter(s => s.trim().length > 0);
    const secretArb = fc.string({ minLength: 1, maxLength: 100 }).filter(s => s.length > 0);

    await fc.assert(
      fc.asyncProperty(nameArb, secretArb, async (name, secret) => {
        // Use a unique suffix to avoid collisions between runs
        const uniqueName = `${name}-${Date.now()}-${Math.random().toString(36).slice(2, 6)}`;

        // POST /credentials — store encrypted credential
        const createRes = await SELF.fetch('http://localhost/credentials', {
          method: 'POST',
          headers: { 'Content-Type': 'application/json' },
          body: JSON.stringify({ name: uniqueName, secret, type: 'api_key' }),
        });

        expect(createRes.status).toBe(201);
        const created = await createRes.json() as Record<string, unknown>;
        expect(created.success).toBe(true);

        const credId = (created.data as Record<string, unknown>).id as string;

        // GET /credentials/:name/secret — retrieve and decrypt
        const getRes = await SELF.fetch(`http://localhost/credentials/${credId}/secret`);
        expect(getRes.status).toBe(200);

        const retrieved = await getRes.json() as Record<string, unknown>;
        expect(retrieved.success).toBe(true);

        // The decrypted secret must equal the original
        const retrievedSecret = (retrieved.data as Record<string, unknown>).secret as string;
        expect(retrievedSecret).toBe(secret);
      }),
      { numRuns: 5 }
    );
  });

  it('example: specific name/secret round-trip preserves secret', async () => {
    const name = 'preservation-test-key';
    const secret = 'my-super-secret-api-key-12345';

    const createRes = await SELF.fetch('http://localhost/credentials', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ name, secret, type: 'bearer_token' }),
    });

    expect(createRes.status).toBe(201);
    const created = await createRes.json() as Record<string, unknown>;
    const credId = (created.data as Record<string, unknown>).id as string;

    const getRes = await SELF.fetch(`http://localhost/credentials/${credId}/secret`);
    expect(getRes.status).toBe(200);

    const retrieved = await getRes.json() as Record<string, unknown>;
    expect((retrieved.data as Record<string, unknown>).secret).toBe(secret);
  });
});