1. <?php
  3. /**
  4. * Resolves dependencies of API responses for internal use with a dry-run mode.
  5. *
  6. * @param array $responses An array of API response data.
  7. * @param array $dependencies A map of dependencies, where keys are response IDs and values are arrays of required response IDs.
  8. * @param bool $dryRun Whether to perform a dry run (no actual API calls). Defaults to true.
  9. * @return array An array of resolved responses, where each response includes its dependencies. Returns an empty array if errors occur.
  10. */
  11. function resolveDependencies(array $responses, array $dependencies, bool $dryRun = true): array
  12. {
  13. $resolved = [];
  14. $visited = []; // Track visited responses to avoid infinite loops
  16. foreach ($responses as $id => $response) {
  17. if (in_array($id, $visited, true)) {
  18. // Skip already processed responses (prevent cycles)
  19. continue;
  20. }
  22. $visited[] = $id;
  24. $resolved[$id] = $response; // Initialize resolved response
  26. if ($dependencies[$id]) {
  27. $resolved[$id]['dependencies'] = [];
  28. foreach ($dependencies[$id] as $dependencyId) {
  29. if (array_key_exists($dependencyId, $responses)) {
  30. if ($dryRun) {
  31. $resolved[$id]['dependencies'][$dependencyId] = $responses[$dependencyId]; // Simulate dependency
  32. } else {
  33. $resolved[$id]['dependencies'][$dependencyId] = resolveDependencies([$dependencyId => $responses[$dependencyId]], $dependencies, false)[$dependencyId]; // Recursively resolve the dependency
  34. }
  35. } else {
  36. // Dependency not found - handle as needed (e.g., log error, return null, throw exception)
  37. error_log("Dependency not found for response ID: " . $id . " - ID: " . $dependencyId);
  38. $resolved[$id]['dependencies'] = ['error' => 'Dependency not found: ' . $dependencyId];
  39. }
  40. }
  41. }
  42. }
  44. return $resolved;
  45. }
  47. if (PHP_SAPI === 'cli') {
  48. // Example Usage (CLI)
  49. $responses = [
  50. 'a' => ['data' => 'Response A'],
  51. 'b' => ['data' => 'Response B'],
  52. 'c' => ['data' => 'Response C'],
  53. ];
  55. $dependencies = [
  56. 'b' => ['a'],
  57. 'c' => ['b', 'a'],
  58. ];
  60. $resolved = resolveDependencies($responses, $dependencies, true);
  62. print_r($resolved);
  63. }
  65. ?>

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