/**
 * Unit tests for rules/list formatter
 * Run with: node tests/rules-list.test.js
 */
const assert = require('assert');
const { formatRulesList, formatRuleActions } = require('../rules/list');

const folderMap = new Map([
  ['AAMkAGI5...', 'Project A'],
  ['AAMkAGI6...', 'Newsletters']
]);

const rules = [
  {
    id: 'rule-1',
    displayName: 'Project A emails',
    sequence: 1,
    isEnabled: true,
    conditions: { fromAddresses: [{ emailAddress: { address: 'team@example.com' } }] },
    actions: { moveToFolder: 'AAMkAGI5...', markAsRead: true }
  },
  {
    id: 'rule-2',
    displayName: 'Newsletter rule',
    sequence: 2,
    isEnabled: true,
    conditions: { subjectContains: ['newsletter'] },
    actions: { copyToFolder: 'AAMkAGI6...' }
  },
  {
    id: 'rule-3',
    displayName: 'Unknown folder rule',
    sequence: 3,
    isEnabled: true,
    actions: { moveToFolder: 'AAMkUNKNOWN' }
  }
];

// Test action formatter resolves known IDs and falls back to raw IDs
const actions1 = formatRuleActions(rules[0], folderMap);
assert(actions1.includes('Move to folder: Project A'), `Expected "Move to folder: Project A", got: ${actions1}`);
assert(actions1.includes('Mark as read'), `Expected "Mark as read", got: ${actions1}`);

const actions2 = formatRuleActions(rules[1], folderMap);
assert(actions2.includes('Copy to folder: Newsletters'), `Expected "Copy to folder: Newsletters", got: ${actions2}`);

const actions3 = formatRuleActions(rules[2], folderMap);
assert(actions3.includes('Move to folder: AAMkUNKNOWN'), `Expected raw ID fallback, got: ${actions3}`);
console.log('✅ formatRuleActions folder-name resolution assertions passed');

// Test full detailed list includes resolved folder names
const detailed = formatRulesList(rules, true, folderMap);
assert(detailed.includes('Move to folder: Project A'), `Detailed list should contain resolved folder name, got: ${detailed}`);
assert(detailed.includes('Copy to folder: Newsletters'), `Detailed list should contain resolved folder name, got: ${detailed}`);
assert(detailed.includes('Move to folder: AAMkUNKNOWN'), `Detailed list should fall back to raw ID, got: ${detailed}`);
console.log('✅ formatRulesList detailed output assertions passed');

console.log('\nAll rules-list tests passed.');