110 lines
2.5 KiB
Go
110 lines
2.5 KiB
Go
package slack
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"encoding/json"
|
|
"fmt"
|
|
"io"
|
|
"net/http"
|
|
"strings"
|
|
"time"
|
|
)
|
|
|
|
const defaultBaseURL = "https://slack.com/api"
|
|
|
|
type Client struct {
|
|
botToken string
|
|
baseURL string
|
|
httpClient *http.Client
|
|
}
|
|
|
|
func NewClient(botToken string) *Client {
|
|
return &Client{
|
|
botToken: strings.TrimSpace(botToken),
|
|
baseURL: defaultBaseURL,
|
|
httpClient: &http.Client{Timeout: 15 * time.Second},
|
|
}
|
|
}
|
|
|
|
func (c *Client) SetBaseURL(url string) {
|
|
if strings.TrimSpace(url) != "" {
|
|
c.baseURL = strings.TrimRight(strings.TrimSpace(url), "/")
|
|
}
|
|
}
|
|
|
|
func (c *Client) PostMessage(ctx context.Context, channel string, text string, threadTS string) (*SendMessageResponse, error) {
|
|
channel = strings.TrimSpace(channel)
|
|
if channel == "" {
|
|
return nil, fmt.Errorf("slack channel is required")
|
|
}
|
|
text = strings.TrimSpace(text)
|
|
if text == "" {
|
|
return nil, fmt.Errorf("message text is required")
|
|
}
|
|
|
|
payload := SendMessageRequest{
|
|
Channel: channel,
|
|
Text: text,
|
|
ThreadTS: threadTS,
|
|
}
|
|
|
|
var resp SendMessageResponse
|
|
if err := c.doRequest(ctx, "/chat.postMessage", payload, &resp); err != nil {
|
|
return nil, err
|
|
}
|
|
if !resp.OK {
|
|
return nil, fmt.Errorf("slack api error: %s", resp.Error)
|
|
}
|
|
return &resp, nil
|
|
}
|
|
|
|
func (c *Client) doRequest(ctx context.Context, path string, payload any, result any) error {
|
|
if c.botToken == "" {
|
|
return fmt.Errorf("slack bot token is required")
|
|
}
|
|
|
|
endpoint := fmt.Sprintf("%s%s", c.baseURL, path)
|
|
|
|
var bodyReader io.Reader
|
|
if payload != nil {
|
|
bodyBytes, err := json.Marshal(payload)
|
|
if err != nil {
|
|
return fmt.Errorf("marshal slack request failed: %w", err)
|
|
}
|
|
bodyReader = bytes.NewBuffer(bodyBytes)
|
|
}
|
|
|
|
req, err := http.NewRequestWithContext(ctx, http.MethodPost, endpoint, bodyReader)
|
|
if err != nil {
|
|
return fmt.Errorf("create slack request failed: %w", err)
|
|
}
|
|
|
|
req.Header.Set("Authorization", "Bearer "+c.botToken)
|
|
if payload != nil {
|
|
req.Header.Set("Content-Type", "application/json; charset=utf-8")
|
|
}
|
|
|
|
res, err := c.httpClient.Do(req)
|
|
if err != nil {
|
|
return fmt.Errorf("slack http request failed: %w", err)
|
|
}
|
|
defer res.Body.Close()
|
|
|
|
bodyBytes, err := io.ReadAll(res.Body)
|
|
if err != nil {
|
|
return fmt.Errorf("read slack response failed: %w", err)
|
|
}
|
|
|
|
if res.StatusCode < 200 || res.StatusCode >= 300 {
|
|
return fmt.Errorf("slack api error (%d): %s", res.StatusCode, string(bodyBytes))
|
|
}
|
|
|
|
if result != nil {
|
|
if err := json.Unmarshal(bodyBytes, result); err != nil {
|
|
return fmt.Errorf("unmarshal slack response failed: %w (body: %s)", err, string(bodyBytes))
|
|
}
|
|
}
|
|
return nil
|
|
}
|