forked from TrueCloudLab/lego
105 lines
2.2 KiB
Go
105 lines
2.2 KiB
Go
package internal
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import (
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"net/url"
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)
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const (
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defaultBaseURL = "https://api.dns.constellix.com"
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defaultVersion = "v1"
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)
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// Client the Constellix client.
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type Client struct {
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BaseURL string
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HTTPClient *http.Client
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common service // Reuse a single struct instead of allocating one for each service on the heap.
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// Services used for communicating with the API
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Domains *DomainService
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TxtRecords *TxtRecordService
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}
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// NewClient Creates a Constellix client.
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func NewClient(httpClient *http.Client) *Client {
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if httpClient == nil {
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httpClient = http.DefaultClient
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}
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client := &Client{
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BaseURL: defaultBaseURL,
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HTTPClient: httpClient,
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}
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client.common.client = client
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client.Domains = (*DomainService)(&client.common)
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client.TxtRecords = (*TxtRecordService)(&client.common)
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return client
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}
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type service struct {
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client *Client
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}
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// do sends an API request and returns the API response.
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func (c *Client) do(req *http.Request, v interface{}) error {
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req.Header.Set("Content-Type", "application/json")
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resp, err := c.HTTPClient.Do(req)
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if err != nil {
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return err
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}
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defer func() { _ = resp.Body.Close() }()
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err = checkResponse(resp)
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if err != nil {
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return err
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}
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raw, err := io.ReadAll(resp.Body)
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if err != nil {
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return fmt.Errorf("failed to read body: %w", err)
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}
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if err = json.Unmarshal(raw, v); err != nil {
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return fmt.Errorf("unmarshaling %T error: %w: %s", v, err, string(raw))
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}
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return nil
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}
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func (c *Client) createEndpoint(fragment ...string) (string, error) {
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return url.JoinPath(c.BaseURL, fragment...)
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}
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func checkResponse(resp *http.Response) error {
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if resp.StatusCode == http.StatusOK {
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return nil
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}
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data, err := io.ReadAll(resp.Body)
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if err == nil && data != nil {
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msg := &APIError{StatusCode: resp.StatusCode}
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if json.Unmarshal(data, msg) != nil {
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return fmt.Errorf("API error: status code: %d: %v", resp.StatusCode, string(data))
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}
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switch resp.StatusCode {
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case http.StatusNotFound:
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return &NotFound{APIError: msg}
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case http.StatusBadRequest:
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return &BadRequest{APIError: msg}
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default:
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return msg
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}
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}
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return fmt.Errorf("API error, status code: %d", resp.StatusCode)
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}
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