/**
 * Property-Based Test: Jira API Preservation — Unchanged Functions Baseline
 *
 * Feature: jira-api-compliance, Property 4: Preservation
 *
 * Verifies that all unchanged Jira API functions continue to produce the
 * correct HTTP method, URL path, and request body. These tests MUST PASS
 * on the current unfixed code — they establish the baseline behavior that
 * the bugfix must preserve.
 *
 * Functions under test:
 * 1. createIssue()       — POST /rest/api/2/issue with { fields }
 * 2. updateIssue()       — PUT  /rest/api/2/issue/{key} with { fields }
 * 3. addComment()        — POST /rest/api/2/issue/{key}/comment with { body }
 * 4. transitionIssue()   — POST /rest/api/2/issue/{key}/transitions with { transition: { id } }
 * 5. getTransitions()    — GET  /rest/api/2/issue/{key}/transitions
 * 6. testConnection()    — GET  /rest/api/2/myself
 *
 * **Validates: Requirements 3.1, 3.2, 3.3, 3.4, 3.5, 3.6**
 */

const fc = require('fast-check');

// ---------------------------------------------------------------------------
// Capture array for intercepted jiraRequest calls.
// ---------------------------------------------------------------------------
let mockCapturedCalls = [];

// ---------------------------------------------------------------------------
// Mock jiraRequest at the module level to capture HTTP method, path, and body.
// Re-implement only the unchanged functions with their original logic wired
// to the mock transport.
// ---------------------------------------------------------------------------
jest.mock('../helpers/jiraApi', () => {
  const originalModule = jest.requireActual('../helpers/jiraApi');

  // Mock transport that records every call and returns appropriate responses
  const mockJiraRequest = jest.fn(async (method, urlPath, body, options) => {
    mockCapturedCalls.push({ method, urlPath, body });

    // Return appropriate status codes based on method and path
    if (method === 'POST' && urlPath === '/rest/api/2/issue') {
      return {
        status: 201,
        body: JSON.stringify({
          id: '10001',
          key: 'TEST-1',
          self: 'https://jira.example.com/rest/api/2/issue/10001'
        })
      };
    }

    if (method === 'PUT' && urlPath.startsWith('/rest/api/2/issue/')) {
      return { status: 204, body: '' };
    }

    if (method === 'POST' && urlPath.endsWith('/comment')) {
      return {
        status: 201,
        body: JSON.stringify({
          id: '20001',
          body: 'mock comment',
          author: { name: 'testuser' }
        })
      };
    }

    if (method === 'POST' && urlPath.endsWith('/transitions')) {
      return { status: 204, body: '' };
    }

    if (method === 'GET' && urlPath.endsWith('/transitions')) {
      return {
        status: 200,
        body: JSON.stringify({
          transitions: [
            { id: '1', name: 'Open' },
            { id: '2', name: 'In Progress' },
            { id: '3', name: 'Done' }
          ]
        })
      };
    }

    if (method === 'GET' && urlPath === '/rest/api/2/myself') {
      return {
        status: 200,
        body: JSON.stringify({
          name: 'testuser',
          displayName: 'Test User',
          emailAddress: 'test@example.com'
        })
      };
    }

    // Default 200 response
    return { status: 200, body: JSON.stringify({}) };
  });

  const mockJiraGet = (urlPath, options) => mockJiraRequest('GET', urlPath, null, options);
  const mockJiraPost = (urlPath, body, options) => mockJiraRequest('POST', urlPath, body, options);
  const mockJiraPut = (urlPath, body, options) => mockJiraRequest('PUT', urlPath, body, options);

  // Re-implement createIssue with the SAME logic as the original source
  async function createIssue(fields) {
    const res = await mockJiraPost('/rest/api/2/issue', { fields });
    if (res.status === 201) {
      return { ok: true, data: JSON.parse(res.body) };
    }
    return { ok: false, status: res.status, body: res.body, rateLimited: res.rateLimited };
  }

  // Re-implement updateIssue with the SAME logic as the original source
  async function updateIssue(issueKey, fields) {
    const res = await mockJiraPut(
      `/rest/api/2/issue/${encodeURIComponent(issueKey)}`,
      { fields }
    );
    if (res.status === 204) {
      return { ok: true };
    }
    return { ok: false, status: res.status, body: res.body, rateLimited: res.rateLimited };
  }

  // Re-implement addComment with the SAME logic as the original source
  async function addComment(issueKey, commentBody) {
    const res = await mockJiraPost(
      `/rest/api/2/issue/${encodeURIComponent(issueKey)}/comment`,
      { body: commentBody }
    );
    if (res.status === 201) {
      return { ok: true, data: JSON.parse(res.body) };
    }
    return { ok: false, status: res.status, body: res.body, rateLimited: res.rateLimited };
  }

  // Re-implement transitionIssue with the SAME logic as the original source
  async function transitionIssue(issueKey, transitionId) {
    const res = await mockJiraPost(
      `/rest/api/2/issue/${encodeURIComponent(issueKey)}/transitions`,
      { transition: { id: transitionId } }
    );
    if (res.status === 204) {
      return { ok: true };
    }
    return { ok: false, status: res.status, body: res.body, rateLimited: res.rateLimited };
  }

  // Re-implement getTransitions with the SAME logic as the original source
  async function getTransitions(issueKey) {
    const res = await mockJiraGet(
      `/rest/api/2/issue/${encodeURIComponent(issueKey)}/transitions`
    );
    if (res.status === 200) {
      return { ok: true, data: JSON.parse(res.body) };
    }
    return { ok: false, status: res.status, body: res.body, rateLimited: res.rateLimited };
  }

  // Re-implement testConnection with the SAME logic as the original source
  async function testConnection() {
    try {
      const res = await mockJiraGet('/rest/api/2/myself');
      if (res.status === 200) {
        const user = JSON.parse(res.body);
        return { ok: true, user: { name: user.name, displayName: user.displayName, emailAddress: user.emailAddress } };
      }
      return { ok: false, status: res.status, body: res.body };
    } catch (err) {
      return { ok: false, error: err.message };
    }
  }

  return {
    ...originalModule,
    jiraRequest: mockJiraRequest,
    jiraGet: mockJiraGet,
    jiraPost: mockJiraPost,
    jiraPut: mockJiraPut,
    createIssue,
    updateIssue,
    addComment,
    transitionIssue,
    getTransitions,
    testConnection
  };
});

const jiraApi = require('../helpers/jiraApi');

// ---------------------------------------------------------------------------
// Arbitraries
// ---------------------------------------------------------------------------

// Issue key: e.g. "VULN-123", "AB-1", "ABCDEF-99999"
const issueKeyArb = fc.tuple(
  fc.stringMatching(/^[A-Z]{2,6}$/),
  fc.integer({ min: 1, max: 99999 })
).map(([prefix, num]) => `${prefix}-${num}`);

// Field objects: at minimum a summary field
const fieldObjectArb = fc.record({
  summary: fc.string({ minLength: 1, maxLength: 100 })
});

// Comment strings: non-empty text
const commentArb = fc.string({ minLength: 1, maxLength: 500 });

// Transition IDs: common Jira transition IDs as strings
const transitionIdArb = fc.constantFrom('1', '2', '3', '4', '5', '11', '21', '31');

// ---------------------------------------------------------------------------
// Tests
// ---------------------------------------------------------------------------

describe('Feature: jira-api-compliance, Property 4: Preservation — Unchanged Jira API Functions', () => {

  beforeEach(() => {
    mockCapturedCalls = [];
  });

  /**
   * Property 4.1: createIssue() always sends POST /rest/api/2/issue with { fields } body
   *
   * For any field object, createIssue() SHALL send a POST request to
   * /rest/api/2/issue with a JSON body containing { fields: <fieldObject> }.
   *
   * **Validates: Requirements 3.1**
   */
  it('createIssue() sends POST /rest/api/2/issue with { fields } body', async () => {
    await fc.assert(
      fc.asyncProperty(fieldObjectArb, async (fields) => {
        mockCapturedCalls = [];
        await jiraApi.createIssue(fields);

        expect(mockCapturedCalls.length).toBe(1);
        const call = mockCapturedCalls[0];

        expect(call.method).toBe('POST');
        expect(call.urlPath).toBe('/rest/api/2/issue');
        expect(call.body).toEqual({ fields });
      }),
      { numRuns: 50 }
    );
  }, 30000);

  /**
   * Property 4.2: updateIssue() always sends PUT /rest/api/2/issue/{key} with { fields } body
   *
   * For any issue key and field object, updateIssue() SHALL send a PUT request
   * to /rest/api/2/issue/{key} with a JSON body containing { fields: <fieldObject> }.
   *
   * **Validates: Requirements 3.2**
   */
  it('updateIssue() sends PUT /rest/api/2/issue/{key} with { fields } body', async () => {
    await fc.assert(
      fc.asyncProperty(issueKeyArb, fieldObjectArb, async (issueKey, fields) => {
        mockCapturedCalls = [];
        await jiraApi.updateIssue(issueKey, fields);

        expect(mockCapturedCalls.length).toBe(1);
        const call = mockCapturedCalls[0];

        expect(call.method).toBe('PUT');
        expect(call.urlPath).toBe(`/rest/api/2/issue/${encodeURIComponent(issueKey)}`);
        expect(call.body).toEqual({ fields });
      }),
      { numRuns: 50 }
    );
  }, 30000);

  /**
   * Property 4.3: addComment() always sends POST /rest/api/2/issue/{key}/comment with { body }
   *
   * For any issue key and comment string, addComment() SHALL send a POST request
   * to /rest/api/2/issue/{key}/comment with a JSON body containing { body: <comment> }.
   *
   * **Validates: Requirements 3.3**
   */
  it('addComment() sends POST /rest/api/2/issue/{key}/comment with { body }', async () => {
    await fc.assert(
      fc.asyncProperty(issueKeyArb, commentArb, async (issueKey, comment) => {
        mockCapturedCalls = [];
        await jiraApi.addComment(issueKey, comment);

        expect(mockCapturedCalls.length).toBe(1);
        const call = mockCapturedCalls[0];

        expect(call.method).toBe('POST');
        expect(call.urlPath).toBe(`/rest/api/2/issue/${encodeURIComponent(issueKey)}/comment`);
        expect(call.body).toEqual({ body: comment });
      }),
      { numRuns: 50 }
    );
  }, 30000);

  /**
   * Property 4.4: transitionIssue() always sends POST /rest/api/2/issue/{key}/transitions
   * with { transition: { id } }
   *
   * For any issue key and transition ID, transitionIssue() SHALL send a POST request
   * to /rest/api/2/issue/{key}/transitions with a JSON body containing
   * { transition: { id: <transitionId> } }.
   *
   * **Validates: Requirements 3.4**
   */
  it('transitionIssue() sends POST /rest/api/2/issue/{key}/transitions with { transition: { id } }', async () => {
    await fc.assert(
      fc.asyncProperty(issueKeyArb, transitionIdArb, async (issueKey, transitionId) => {
        mockCapturedCalls = [];
        await jiraApi.transitionIssue(issueKey, transitionId);

        expect(mockCapturedCalls.length).toBe(1);
        const call = mockCapturedCalls[0];

        expect(call.method).toBe('POST');
        expect(call.urlPath).toBe(`/rest/api/2/issue/${encodeURIComponent(issueKey)}/transitions`);
        expect(call.body).toEqual({ transition: { id: transitionId } });
      }),
      { numRuns: 50 }
    );
  }, 30000);

  /**
   * Property 4.5: getTransitions() always sends GET /rest/api/2/issue/{key}/transitions
   *
   * For any issue key, getTransitions() SHALL send a GET request to
   * /rest/api/2/issue/{key}/transitions with no body.
   *
   * **Validates: Requirements 3.5**
   */
  it('getTransitions() sends GET /rest/api/2/issue/{key}/transitions', async () => {
    await fc.assert(
      fc.asyncProperty(issueKeyArb, async (issueKey) => {
        mockCapturedCalls = [];
        await jiraApi.getTransitions(issueKey);

        expect(mockCapturedCalls.length).toBe(1);
        const call = mockCapturedCalls[0];

        expect(call.method).toBe('GET');
        expect(call.urlPath).toBe(`/rest/api/2/issue/${encodeURIComponent(issueKey)}/transitions`);
        expect(call.body).toBeNull();
      }),
      { numRuns: 50 }
    );
  }, 30000);

  /**
   * Property 4.6: testConnection() always sends GET /rest/api/2/myself
   *
   * testConnection() SHALL send a GET request to /rest/api/2/myself with no body.
   *
   * **Validates: Requirements 3.6**
   */
  it('testConnection() sends GET /rest/api/2/myself', async () => {
    // testConnection is deterministic — no random input needed.
    // Run it multiple times to confirm consistency.
    for (let i = 0; i < 10; i++) {
      mockCapturedCalls = [];
      const result = await jiraApi.testConnection();

      expect(mockCapturedCalls.length).toBe(1);
      const call = mockCapturedCalls[0];

      expect(call.method).toBe('GET');
      expect(call.urlPath).toBe('/rest/api/2/myself');
      expect(call.body).toBeNull();

      // Verify response shape
      expect(result).toHaveProperty('ok', true);
      expect(result).toHaveProperty('user');
      expect(result.user).toHaveProperty('name');
      expect(result.user).toHaveProperty('displayName');
      expect(result.user).toHaveProperty('emailAddress');
    }
  }, 30000);
});