Achmad
56 lines
1.2 KiB
Go
Executable File
56 lines
1.2 KiB
Go
Executable File
package httpclient
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"net/http"
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)
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type GraphQLRequest struct {
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Query string `json:"query"`
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Variables any `json:"variables,omitempty"`
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}
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type graphQLResponse[T any] struct {
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Data T `json:"data"`
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Errors []struct {
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Message string `json:"message"`
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} `json:"errors"`
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}
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// Post sends a GraphQL request and unmarshals the `data` field into T.
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func Post[T any](ctx context.Context, client *http.Client, url string, req GraphQLRequest, headers map[string]string) (T, error) {
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var zero T
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body, err := json.Marshal(req)
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if err != nil {
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return zero, err
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}
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httpReq, err := http.NewRequestWithContext(ctx, http.MethodPost, url, bytes.NewReader(body))
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if err != nil {
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return zero, err
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}
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httpReq.Header.Set("Content-Type", "application/json")
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httpReq.Header.Set("Accept", "application/json")
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for k, v := range headers {
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httpReq.Header.Set(k, v)
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}
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resp, err := client.Do(httpReq)
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if err != nil {
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return zero, err
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}
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defer resp.Body.Close()
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var gqlResp graphQLResponse[T]
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if err := json.NewDecoder(resp.Body).Decode(&gqlResp); err != nil {
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return zero, err
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}
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if len(gqlResp.Errors) > 0 {
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return zero, fmt.Errorf("graphql: %s", gqlResp.Errors[0].Message)
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}
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return gqlResp.Data, nil
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}
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