refactor: python -> go

internal/platform/slack/slack.go

@@ -0,0 +1,212 @@
+package slack
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"strings"
+	"time"
+
+	"git.nakama.town/fmartingr/butterrobot/internal/config"
+	"git.nakama.town/fmartingr/butterrobot/internal/model"
+)
+
+// SlackPlatform implements the Platform interface for Slack
+type SlackPlatform struct {
+	config *config.SlackConfig
+}
+
+// New creates a new SlackPlatform instance
+func New(cfg *config.SlackConfig) *SlackPlatform {
+	return &SlackPlatform{
+		config: cfg,
+	}
+}
+
+// Init initializes the Slack platform
+func (s *SlackPlatform) Init(_ *config.Config) error {
+	// Validate config
+	if s.config.Token == "" || s.config.BotOAuthAccessToken == "" {
+		return model.ErrPlatformInit
+	}
+	return nil
+}
+
+// ParseIncomingMessage parses an incoming Slack message
+func (s *SlackPlatform) ParseIncomingMessage(r *http.Request) (*model.Message, error) {
+	// Read request body
+	body, err := ioutil.ReadAll(r.Body)
+	if err != nil {
+		return nil, err
+	}
+	defer r.Body.Close()
+
+	// Parse JSON
+	var requestData map[string]interface{}
+	if err := json.Unmarshal(body, &requestData); err != nil {
+		return nil, err
+	}
+
+	// Verify Slack request
+	// This is a simplified version, production should include signature verification
+	urlVerify, ok := requestData["type"]
+	if ok && urlVerify == "url_verification" {
+		return nil, errors.New("url verification") // Handle separately
+	}
+
+	// Process event
+	event, ok := requestData["event"].(map[string]interface{})
+	if !ok {
+		return nil, errors.New("invalid event")
+	}
+
+	// Create message
+	msg := &model.Message{
+		Raw: requestData,
+	}
+
+	// Get text
+	if text, ok := event["text"].(string); ok {
+		msg.Text = text
+	}
+
+	// Get channel
+	if channel, ok := event["channel"].(string); ok {
+		msg.Chat = channel
+
+		// Create Channel object
+		channelRaw, err := s.ParseChannelFromMessage(body)
+		if err != nil {
+			return nil, err
+		}
+
+		msg.Channel = &model.Channel{
+			Platform:          "slack",
+			PlatformChannelID: channel,
+			ChannelRaw:        channelRaw,
+		}
+	}
+
+	// Check if from bot
+	if botID, ok := event["bot_id"].(string); ok && botID != "" {
+		msg.FromBot = true
+	}
+
+	// Get user
+	if user, ok := event["user"].(string); ok {
+		msg.Author = user
+	}
+
+	// Get timestamp
+	if ts, ok := event["ts"].(string); ok {
+		// Convert Unix timestamp
+		parts := strings.Split(ts, ".")
+		if len(parts) > 0 {
+			if sec, err := parseInt64(parts[0]); err == nil {
+				msg.Date = time.Unix(sec, 0)
+				msg.ID = ts
+			}
+		}
+	}
+
+	return msg, nil
+}
+
+// ParseChannelNameFromRaw extracts a human-readable channel name from raw data
+func (s *SlackPlatform) ParseChannelNameFromRaw(channelRaw map[string]interface{}) string {
+	// Extract name from channel raw data
+	if name, ok := channelRaw["name"].(string); ok {
+		return name
+	}
+
+	// Fallback to ID if available
+	if id, ok := channelRaw["id"].(string); ok {
+		return id
+	}
+
+	return "unknown"
+}
+
+// ParseChannelFromMessage extracts channel data from a message
+func (s *SlackPlatform) ParseChannelFromMessage(body []byte) (map[string]any, error) {
+	// Parse JSON
+	var requestData map[string]interface{}
+	if err := json.Unmarshal(body, &requestData); err != nil {
+		return nil, err
+	}
+
+	// Extract channel info from event
+	event, ok := requestData["event"].(map[string]interface{})
+	if !ok {
+		return nil, errors.New("invalid event data")
+	}
+
+	channelID, ok := event["channel"].(string)
+	if !ok {
+		return nil, errors.New("channel ID not found")
+	}
+
+	// In a real implementation, you might want to fetch more details about the channel
+	// using the Slack API, but for simplicity we'll just return the ID
+	channelRaw := map[string]interface{}{
+		"id": channelID,
+	}
+
+	return channelRaw, nil
+}
+
+// SendMessage sends a message to Slack
+func (s *SlackPlatform) SendMessage(msg *model.Message) error {
+	if s.config.BotOAuthAccessToken == "" {
+		return errors.New("bot token not configured")
+	}
+
+	// Prepare payload
+	payload := map[string]interface{}{
+		"channel": msg.Chat,
+		"text":    msg.Text,
+	}
+
+	// Add thread_ts if it's a reply
+	if msg.ReplyTo != "" {
+		payload["thread_ts"] = msg.ReplyTo
+	}
+
+	// Convert payload to JSON
+	data, err := json.Marshal(payload)
+	if err != nil {
+		return err
+	}
+
+	// Send HTTP request
+	req, err := http.NewRequest("POST", "https://slack.com/api/chat.postMessage", strings.NewReader(string(data)))
+	if err != nil {
+		return err
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", s.config.BotOAuthAccessToken))
+
+	client := &http.Client{}
+	resp, err := client.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	// Check response
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("slack API error: %d", resp.StatusCode)
+	}
+
+	return nil
+}
+
+// Helper function to parse int64
+func parseInt64(s string) (int64, error) {
+	var n int64
+	_, err := fmt.Sscanf(s, "%d", &n)
+	return n, err
+}