69 lines
1.7 KiB
Go
69 lines
1.7 KiB
Go
package ivpn
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"net/http"
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)
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var (
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errBuildRequest = errors.New("cannot build HTTP request")
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errDoRequest = errors.New("failed doing HTTP request")
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errHTTPStatusCodeNotOK = errors.New("HTTP status code not OK")
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errUnmarshalResponseBody = errors.New("failed unmarshaling response body")
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errCloseBody = errors.New("failed closing HTTP body")
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)
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type apiData struct {
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Servers []apiServer `json:"servers"`
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}
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type apiServer struct {
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Hostnames apiHostnames `json:"hostnames"`
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IsActive bool `json:"is_active"`
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Country string `json:"country"`
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City string `json:"city"`
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ISP string `json:"isp"`
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WgPubKey string `json:"wg_public_key"`
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}
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type apiHostnames struct {
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OpenVPN string `json:"openvpn"`
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Wireguard string `json:"wireguard"`
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}
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func fetchAPI(ctx context.Context, client *http.Client) (
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data apiData, err error) {
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const url = "https://api.ivpn.net/v4/servers/stats"
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request, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
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if err != nil {
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return data, fmt.Errorf("%w: %s", errBuildRequest, err)
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}
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response, err := client.Do(request)
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if err != nil {
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return data, fmt.Errorf("%w: %s", errDoRequest, err)
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}
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if response.StatusCode != http.StatusOK {
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_ = response.Body.Close()
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return data, fmt.Errorf("%w: %d %s",
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errHTTPStatusCodeNotOK, response.StatusCode, response.Status)
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}
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decoder := json.NewDecoder(response.Body)
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if err := decoder.Decode(&data); err != nil {
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_ = response.Body.Close()
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return data, fmt.Errorf("%w: %s", errUnmarshalResponseBody, err)
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}
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if err := response.Body.Close(); err != nil {
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return data, fmt.Errorf("%w: %s", errCloseBody, err)
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}
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return data, nil
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}
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