lego/providers/dns/njalla/internal/client.go
2021-02-19 20:23:48 +00:00

137 lines
2.7 KiB
Go

package internal
import (
"bytes"
"encoding/json"
"fmt"
"net/http"
"time"
)
const apiEndpoint = "https://njal.la/api/1/"
// Client is a Njalla API client.
type Client struct {
HTTPClient *http.Client
apiEndpoint string
token string
}
// NewClient creates a new Client.
func NewClient(token string) *Client {
return &Client{
HTTPClient: &http.Client{Timeout: 5 * time.Second},
apiEndpoint: apiEndpoint,
token: token,
}
}
// AddRecord adds a record.
func (c *Client) AddRecord(record Record) (*Record, error) {
data := APIRequest{
Method: "add-record",
Params: record,
}
result, err := c.do(data)
if err != nil {
return nil, err
}
var rcd Record
err = json.Unmarshal(result, &rcd)
if err != nil {
return nil, fmt.Errorf("failed to unmarshal response result: %w", err)
}
return &rcd, nil
}
// RemoveRecord removes a record.
func (c *Client) RemoveRecord(id int, domain string) error {
data := APIRequest{
Method: "remove-record",
Params: Record{
ID: id,
Domain: domain,
},
}
_, err := c.do(data)
if err != nil {
return err
}
return nil
}
// ListRecords list the records for one domain.
func (c *Client) ListRecords(domain string) ([]Record, error) {
data := APIRequest{
Method: "list-records",
Params: Record{
Domain: domain,
},
}
result, err := c.do(data)
if err != nil {
return nil, err
}
var rcds Records
err = json.Unmarshal(result, &rcds)
if err != nil {
return nil, fmt.Errorf("failed to unmarshal response result: %w", err)
}
return rcds.Records, nil
}
func (c *Client) do(data APIRequest) (json.RawMessage, error) {
req, err := c.createRequest(data)
if err != nil {
return nil, err
}
resp, err := c.HTTPClient.Do(req)
if err != nil {
return nil, fmt.Errorf("failed to perform request: %w", err)
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("unexpected error: %d", resp.StatusCode)
}
apiResponse := APIResponse{}
err = json.NewDecoder(resp.Body).Decode(&apiResponse)
if err != nil {
return nil, fmt.Errorf("failed to unmarshal response: %w", err)
}
if apiResponse.Error != nil {
return nil, apiResponse.Error
}
return apiResponse.Result, nil
}
func (c *Client) createRequest(data APIRequest) (*http.Request, error) {
reqBody, err := json.Marshal(data)
if err != nil {
return nil, fmt.Errorf("failed to marshall request body: %w", err)
}
req, err := http.NewRequest(http.MethodPost, c.apiEndpoint, bytes.NewReader(reqBody))
if err != nil {
return nil, fmt.Errorf("failed to create request: %w", err)
}
req.Header.Set("Accept", "application/json")
req.Header.Set("Content-Type", "application/json")
req.Header.Set("Authorization", "Njalla "+c.token)
return req, nil
}