159 lines
3.6 KiB
Go
159 lines
3.6 KiB
Go
package internal
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import (
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"bytes"
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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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"time"
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)
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const defaultBaseURL = "https://usersapiv2.epik.com/v2"
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type Client struct {
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HTTPClient *http.Client
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baseURL *url.URL
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signature string
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}
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func NewClient(signature string) *Client {
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baseURL, _ := url.Parse(defaultBaseURL)
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return &Client{
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HTTPClient: &http.Client{Timeout: 5 * time.Second},
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baseURL: baseURL,
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signature: signature,
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}
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}
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// GetDNSRecords gets DNS records for a domain.
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// https://docs.userapi.epik.com/v2/#/DNS%20Host%20Records/getDnsRecord
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func (c Client) GetDNSRecords(domain string) ([]Record, error) {
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resp, err := c.do(http.MethodGet, domain, url.Values{}, nil)
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if err != nil {
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return nil, err
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}
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defer func() { _ = resp.Body.Close() }()
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all, err := io.ReadAll(resp.Body)
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if err != nil {
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return nil, fmt.Errorf("failed to read request body (%d): %w", resp.StatusCode, err)
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}
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err = checkError(resp.StatusCode, all)
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if err != nil {
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return nil, err
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}
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var data GetDNSRecordResponse
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err = json.Unmarshal(all, &data)
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if err != nil {
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return nil, fmt.Errorf("failed to unmarshal request body (%d): %s", resp.StatusCode, string(all))
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}
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return data.Data.Records, nil
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}
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// CreateHostRecord creates a record for a domain.
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// https://docs.userapi.epik.com/v2/#/DNS%20Host%20Records/createHostRecord
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func (c Client) CreateHostRecord(domain string, record RecordRequest) (*Data, error) {
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payload := CreateHostRecords{Payload: record}
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body, err := json.Marshal(payload)
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if err != nil {
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return nil, err
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}
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resp, err := c.do(http.MethodPost, domain, url.Values{}, bytes.NewReader(body))
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if err != nil {
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return nil, err
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}
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defer func() { _ = resp.Body.Close() }()
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all, err := io.ReadAll(resp.Body)
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if err != nil {
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return nil, fmt.Errorf("failed to read request body (%d): %w", resp.StatusCode, err)
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}
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err = checkError(resp.StatusCode, all)
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if err != nil {
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return nil, err
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}
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var data Data
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err = json.Unmarshal(all, &data)
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if err != nil {
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return nil, fmt.Errorf("%d: %s", resp.StatusCode, string(all))
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}
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return &data, nil
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}
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// RemoveHostRecord removes a record for a domain.
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// https://docs.userapi.epik.com/v2/#/DNS%20Host%20Records/removeHostRecord
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func (c Client) RemoveHostRecord(domain string, recordID string) (*Data, error) {
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params := url.Values{}
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params.Set("ID", recordID)
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resp, err := c.do(http.MethodDelete, domain, params, nil)
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if err != nil {
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return nil, err
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}
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defer func() { _ = resp.Body.Close() }()
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all, err := io.ReadAll(resp.Body)
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if err != nil {
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return nil, fmt.Errorf("failed to read request body (%d): %w", resp.StatusCode, err)
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}
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err = checkError(resp.StatusCode, all)
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if err != nil {
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return nil, err
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}
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var data Data
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err = json.Unmarshal(all, &data)
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if err != nil {
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return nil, fmt.Errorf("%d: %s", resp.StatusCode, string(all))
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}
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return &data, nil
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}
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func (c *Client) do(method, domain string, params url.Values, body io.Reader) (*http.Response, error) {
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endpoint := c.baseURL.JoinPath("domains", domain, "records")
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params.Set("SIGNATURE", c.signature)
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endpoint.RawQuery = params.Encode()
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req, err := http.NewRequest(method, endpoint.String(), body)
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if err != nil {
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return nil, err
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}
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req.Header.Set("Accept", "application/json")
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if body != nil {
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req.Header.Set("Content-Type", "application/json")
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}
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return c.HTTPClient.Do(req)
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}
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func checkError(statusCode int, all []byte) error {
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if statusCode == http.StatusOK {
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return nil
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}
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var apiErr APIError
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err := json.Unmarshal(all, &apiErr)
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if err != nil {
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return fmt.Errorf("%d: %s", statusCode, string(all))
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}
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return &apiErr
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}
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