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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 | 2x 5x 5x 5x 5x 4x 3x 3x 3x 1x 1x 1x 1x 2x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | import { CallData } from '../models/infrasctructure/call-data';
import { CallRequest } from '../models/infrasctructure/call-request';
import { CallResponse } from '../models/infrasctructure/call-response';
import { Logger } from './logger';
/**
* Interface for making API calls to the server.
* Provides method for sending requests and receiving responses using HTTP.
*/
export interface ApiClient {
/**
* Sends a call request to the server and returns the response.
* Uses HTTP POST to transmit the request and handles the JSON response.
*
* @param serverUrl - URL of the server to send the request to
* @param request - Call request containing the method and data
* @returns Promise resolving to the typed response from the server
*/
call<TypeData extends CallData, TypeResponse extends CallResponse>(
serverUrl: string,
request: CallRequest<TypeData>,
): Promise<TypeResponse>;
}
/**
* Factory function that creates and returns an implementation of the ApiClient interface.
* Handles HTTP communication details including error handling and response parsing.
*
* @param logger - Logger instance for error and debugging information
* @returns An implementation of the ApiClient interface
*/
export function getApiClient(logger: Logger): ApiClient {
return {
call<TypeData extends CallData, TypeResponse extends CallResponse>(
serverUrl: string,
request: CallRequest<TypeData>,
): Promise<TypeResponse> {
return new Promise<TypeResponse>((resolve, reject) => {
const method = request.a;
fetch(`${serverUrl}/api/v1/call`, {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify(request),
})
.then((response) => {
if (response.ok) {
response.json().then((result) => {
const typedResponse = result as TypeResponse;
if (!typedResponse) {
const error = `[api-client] Unexpected answer on call ${method} from ${serverUrl}.`;
logger.error(error);
reject(error);
return;
}
if (!typedResponse.ok) {
const error = `[api-client] Request was not successful on call '${method}'. Reason: ${typedResponse.reason}; Response: ${JSON.stringify(typedResponse)}.`;
logger.error(error, typedResponse);
reject(error);
return;
}
logger.debug(
`[api-client] Call '${method}' successfully sent. Response: ${JSON.stringify(typedResponse)}`,
request,
);
resolve(result);
});
} else {
response.text().then((body) => {
const error = `[api-client] Error while sending call '${method}'. Status: ${response.status}; Body: ${JSON.stringify(body)}.`;
logger.error(error);
reject(error);
});
}
})
.catch((err) => {
logger.error(`[api-client] Error while sending request.`, err, request);
reject(err);
});
});
},
};
}
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