feat: production-ready domain control dashboard
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@@ -0,0 +1,221 @@
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package hetzner
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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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"io"
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"net/http"
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"net/url"
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"strconv"
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"strings"
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"time"
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)
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type Client struct {
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baseURL string
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http *http.Client
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}
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type Zone struct {
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ID string
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Name string
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}
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type Record struct {
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Value string `json:"value"`
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Comment string `json:"comment,omitempty"`
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}
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type RRSet struct {
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Name string `json:"name"`
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Type string `json:"type"`
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TTL *int `json:"ttl"`
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Records []Record `json:"records"`
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Protection struct {
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Change bool `json:"change"`
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} `json:"protection"`
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}
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type APIError struct {
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Status int
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Code string
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Message string
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}
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func (e *APIError) Error() string {
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if e.Code != "" {
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return fmt.Sprintf("Hetzner API %d (%s): %s", e.Status, e.Code, e.Message)
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}
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return fmt.Sprintf("Hetzner API %d: %s", e.Status, e.Message)
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}
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func New(baseURL string) *Client {
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return &Client{
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baseURL: strings.TrimRight(baseURL, "/"),
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http: &http.Client{
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Timeout: 15 * time.Second,
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CheckRedirect: func(_ *http.Request, _ []*http.Request) error {
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return http.ErrUseLastResponse
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},
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},
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}
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}
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func (c *Client) ListZones(ctx context.Context, token string) ([]Zone, error) {
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var result []Zone
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for page := 1; ; page++ {
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var response struct {
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Zones []struct {
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ID int64 `json:"id"`
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Name string `json:"name"`
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} `json:"zones"`
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Meta struct {
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Pagination struct {
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NextPage *int `json:"next_page"`
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} `json:"pagination"`
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} `json:"meta"`
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}
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query := url.Values{"page": {strconv.Itoa(page)}, "per_page": {"50"}}
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if err := c.doJSON(ctx, token, http.MethodGet, "/zones?"+query.Encode(), nil, &response); err != nil {
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return nil, err
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}
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for _, zone := range response.Zones {
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result = append(result, Zone{ID: strconv.FormatInt(zone.ID, 10), Name: zone.Name})
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}
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if response.Meta.Pagination.NextPage == nil {
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break
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}
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page = *response.Meta.Pagination.NextPage - 1
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}
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return result, nil
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}
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func (c *Client) ListRRSets(ctx context.Context, token, zoneID string) ([]RRSet, error) {
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var result []RRSet
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for page := 1; ; page++ {
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var response struct {
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RRSets []RRSet `json:"rrsets"`
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Meta struct {
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Pagination struct {
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NextPage *int `json:"next_page"`
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} `json:"pagination"`
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} `json:"meta"`
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}
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query := url.Values{"page": {strconv.Itoa(page)}, "per_page": {"100"}}
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if err := c.doJSON(ctx, token, http.MethodGet, "/zones/"+url.PathEscape(zoneID)+"/rrsets?"+query.Encode(), nil, &response); err != nil {
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return nil, err
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}
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result = append(result, response.RRSets...)
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if response.Meta.Pagination.NextPage == nil {
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break
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}
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page = *response.Meta.Pagination.NextPage - 1
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}
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return result, nil
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}
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func (c *Client) CreateRRSet(ctx context.Context, token, zoneID, name, recordType string, ttl int, records []Record) error {
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body := struct {
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Name string `json:"name"`
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Type string `json:"type"`
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TTL int `json:"ttl"`
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Records []Record `json:"records"`
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}{Name: name, Type: recordType, TTL: ttl, Records: records}
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return c.doJSON(ctx, token, http.MethodPost, "/zones/"+url.PathEscape(zoneID)+"/rrsets", body, nil)
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}
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func (c *Client) SetRRSetRecords(ctx context.Context, token, zoneID, name, recordType string, records []Record) error {
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body := struct {
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Records []Record `json:"records"`
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}{Records: records}
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return c.doJSON(ctx, token, http.MethodPost, rrsetPath(zoneID, name, recordType)+"/actions/set_records", body, nil)
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}
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func (c *Client) ChangeRRSetTTL(ctx context.Context, token, zoneID, name, recordType string, ttl int) error {
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body := struct {
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TTL int `json:"ttl"`
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}{TTL: ttl}
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return c.doJSON(ctx, token, http.MethodPost, rrsetPath(zoneID, name, recordType)+"/actions/change_ttl", body, nil)
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}
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func (c *Client) DeleteRRSet(ctx context.Context, token, zoneID, name, recordType string) error {
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return c.doJSON(ctx, token, http.MethodDelete, rrsetPath(zoneID, name, recordType), nil, nil)
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}
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func (c *Client) UpdateRecordComments(ctx context.Context, token, zoneID, name, recordType string, records []Record) error {
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body := struct {
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Records []struct {
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Value string `json:"value"`
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Comment string `json:"comment"`
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} `json:"records"`
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}{Records: make([]struct {
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Value string `json:"value"`
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Comment string `json:"comment"`
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}, 0, len(records))}
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for _, record := range records {
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body.Records = append(body.Records, struct {
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Value string `json:"value"`
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Comment string `json:"comment"`
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}{Value: record.Value, Comment: record.Comment})
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}
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return c.doJSON(ctx, token, http.MethodPost, rrsetPath(zoneID, name, recordType)+"/actions/update_records", body, nil)
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}
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func (c *Client) doJSON(ctx context.Context, token, method, path string, requestBody any, responseBody any) error {
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var body io.Reader
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if requestBody != nil {
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encoded, err := json.Marshal(requestBody)
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if err != nil {
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return err
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}
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body = bytes.NewReader(encoded)
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}
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req, err := http.NewRequestWithContext(ctx, method, c.baseURL+path, body)
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if err != nil {
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return err
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}
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req.Header.Set("Authorization", "Bearer "+token)
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req.Header.Set("Accept", "application/json")
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if requestBody != nil {
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req.Header.Set("Content-Type", "application/json")
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}
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resp, err := c.http.Do(req)
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if err != nil {
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return fmt.Errorf("request Hetzner API: %w", err)
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}
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defer resp.Body.Close()
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content, err := io.ReadAll(io.LimitReader(resp.Body, 1<<20))
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if err != nil {
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return fmt.Errorf("read Hetzner API response: %w", err)
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}
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if resp.StatusCode < http.StatusOK || resp.StatusCode >= http.StatusMultipleChoices {
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return decodeAPIError(resp.StatusCode, content)
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}
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if responseBody != nil && len(content) > 0 {
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if err := json.Unmarshal(content, responseBody); err != nil {
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return fmt.Errorf("decode Hetzner API response: %w", err)
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}
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}
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return nil
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}
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func rrsetPath(zoneID, name, recordType string) string {
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return "/zones/" + url.PathEscape(zoneID) + "/rrsets/" + url.PathEscape(name) + "/" + url.PathEscape(recordType)
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}
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func decodeAPIError(status int, content []byte) error {
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var response struct {
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Error struct {
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Code string `json:"code"`
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Message string `json:"message"`
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} `json:"error"`
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}
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_ = json.Unmarshal(content, &response)
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message := strings.TrimSpace(response.Error.Message)
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if message == "" {
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message = http.StatusText(status)
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}
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return &APIError{Status: status, Code: response.Error.Code, Message: message}
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}
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