1. /**
  2. * Checks configuration constraints with dry-run mode.
  3. *
  4. * @param {object} config The configuration object.
  5. * @param {object} constraints An object defining the constraints for each config value.
  6. * @param {boolean} dryRun Whether to only validate and not apply changes. Defaults to true.
  7. * @returns {object} An object containing validation results. Includes 'errors' and 'warnings' arrays.
  8. */
  9. function validateConfig(config, constraints, dryRun = true) {
  10. const results = {
  11. errors: [],
  12. warnings: [],
  13. };
  15. for (const key in constraints) {
  16. if (constraints.hasOwnProperty(key)) {
  17. const constraint = constraints[key];
  18. const value = config[key];
  20. if (constraint.type === 'required' && value === undefined) {
  21. results.errors.push({
  22. key: key,
  23. message: 'Value is required.',
  24. });
  25. continue;
  26. }
  28. if (constraint.type === 'string' && typeof value !== 'string') {
  29. results.errors.push({
  30. key: key,
  31. message: 'Value must be a string.',
  32. });
  33. }
  35. if (constraint.type === 'number' && typeof value !== 'number') {
  36. results.errors.push({
  37. key: key,
  38. message: 'Value must be a number.',
  39. });
  40. }
  42. if (constraint.min !== undefined && value < constraint.min) {
  43. results.errors.push({
  44. key: key,
  45. message: `Value must be greater than or equal to ${constraint.min}.`,
  46. });
  47. }
  49. if (constraint.max !== undefined && value > constraint.max) {
  50. results.errors.push({
  51. key: key,
  52. message: `Value must be less than or equal to ${constraint.max}.`,
  53. });
  54. }
  56. if (constraint.minLength !== undefined && value.length < constraint.minLength) {
  57. results.errors.push({
  58. key: key,
  59. message: `Value must be at least ${constraint.minLength} characters long.`,
  60. });
  61. }
  63. if (constraint.maxLength !== undefined && value.length > constraint.maxLength) {
  64. results.errors.push({
  65. key: key,
  66. message: `Value must be at most ${constraint.maxLength} characters long.`,
  67. });
  68. }
  70. if (constraint.pattern && typeof value !== 'string' && constraint.pattern) {
  71. results.errors.push({
  72. key: key,
  73. message: 'Pattern validation only applies to strings.',
  74. });
  75. }
  76. }
  77. }
  79. if (dryRun) {
  80. return results; // Return results without applying changes
  81. } else {
  82. //In a real application, you would apply the changes here based on the validation results
  83. //For this example, we just return the results.
  84. return results;
  85. }
  86. }

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