1. /**
  2. * Decodes API responses with fallback logic.
  3. * @param {string} responseBody The raw response body from the API.
  4. * @param {object} decodingMap An object mapping content-type to decoding functions.
  5. * @returns {any} The decoded data, or null if decoding fails.
  6. */
  7. function decodeApiResponse(responseBody, decodingMap) {
  8. if (!responseBody) {
  9. console.warn("Response body is empty.");
  10. return null;
  11. }
  13. const contentType = responseBody.split(';')[0].split(':')[1].trim().toLowerCase(); // Extract content type
  15. if (decodingMap && decodingMap[contentType]) {
  16. try {
  17. return decodingMap[contentType](responseBody); // Use specific decoder function
  18. } catch (error) {
  19. console.error(`Decoding failed for content type ${contentType}:`, error);
  20. return null; // Fallback if specific decoder fails
  21. }
  22. } else {
  23. console.warn(`No decoder found for content type: ${contentType}`);
  24. return null; // Fallback if no decoder is defined
  25. }
  26. }
  28. /**
  29. * Example decoder functions (can be extended)
  30. */
  31. function decodeJson(body) {
  32. try {
  33. return JSON.parse(body);
  34. } catch (error) {
  35. console.error("JSON parsing error:", error);
  36. return null;
  37. }
  38. }
  40. function decodeXml(body) {
  41. try {
  42. // Implement XML parsing here (e.g., using xml2js)
  43. // For simplicity, this example just returns the body as a string.
  44. return body;
  45. } catch (error) {
  46. console.error("XML parsing error:", error);
  47. return null;
  48. }
  49. }
  51. function decodePlainText(body) {
  52. return body;
  53. }
  55. //Example usage:
  56. // const decodingMap = {
  57. // 'application/json': decodeJson,
  58. // 'application/xml': decodeXml,
  59. // 'text/plain': decodePlainText
  60. // };
  62. // const response = '{"name": "John", "age": 30}';
  63. // const decodedData = decodeApiResponse(response, decodingMap);
  64. // console.log(decodedData);
  66. // const response2 = '<root><name>Jane</name></root>';
  67. // const decodedData2 = decodeApiResponse(response2, decodingMap);
  68. // console.log(decodedData2);
  70. // const response3 = "This is plain text";
  71. // const decodedData3 = decodeApiResponse(response3, decodingMap);
  72. // console.log(decodedData3);
  74. //const response4 = null;
  75. //const decodedData4 = decodeApiResponse(response4, decodingMap);
  76. //console.log(decodedData4);

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