I have an Algolia API call that retrieves product information including the price of an item. The issue I have is that if the price is a whole number, its treated as an integer whereas if there is a decimal, its treated as a double. I wanted to create an interceptor that adds ".00" to a whole number and converts it to a double. I've tried may different functions to accomplish this but i keep getting errors. I've been at this for a few days and would really love some help.
I would like to add that I have tried several types of approaches to getting this resolved, the example below is just one of them.
What have you tried so far?
class PriceInterceptor extends FFApiInterceptor {
@override
Future<ApiCallOptions> onRequest({
required ApiCallOptions options,
}) async {
return options; // No modifications to the request
}
@override
Future<ApiCallResponse> onResponse({
required ApiCallResponse response,
required Future<ApiCallResponse> Function() retryFn,
}) async {
// Ensure response is a valid JSON Map
if (response.jsonBody is! Map<String, dynamic>) {
return response; // If not valid JSON, return it as-is
}
// Clone the response JSON for safe modification
final Map<String, dynamic> jsonResponse =
Map<String, dynamic>.from(response.jsonBody);
// Ensure 'hits' exists and is a List
if (jsonResponse.containsKey('hits') && jsonResponse['hits'] is List) {
final List<dynamic> hits = jsonResponse['hits'];
for (var product in hits) {
if (product is Map<String, dynamic> && product.containsKey('price')) {
final price = product['price'];
// Keep the original price field unchanged
// Create a new field called "formattedPrice"
if (price is int) {
product['formattedPrice'] =
"$price.00"; // Convert int to string with .00
} else if (price is double) {
product['formattedPrice'] =
price.toStringAsFixed(2); // Ensure two decimal places
} else if (price is String) {
// Handle cases where the price is already a string (edge case)
try {
final parsedPrice = double.parse(price);
product['formattedPrice'] = parsedPrice % 1 == 0
? "${parsedPrice.toInt()}.00"
: parsedPrice.toStringAsFixed(2);
} catch (e) {
product['formattedPrice'] =
price; // Keep it as is if parsing fails
}
}
}
}
}
// Ensure statusCode is an int (correct first argument)
final int statusCode =
response.statusCode is int ? response.statusCode : 200;
// Ensure headers are properly typed as Map<String, String> (correct second argument)
final Map<String, String> headers = {};
response.headers?.forEach((key, value) {
headers[key.toString()] =
value.toString(); // Convert all values to String
});
// Fix the argument order in ApiCallResponse (statusCode must be first)
return ApiCallResponse(
statusCode, // First argument: must be an int
jsonResponse, // Second argument: must be a Map<String, dynamic>
headers, // Third argument: must be a Map<String, String>
);
}
}
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