+notification from site +version bump fix

api/notification/internal/server/notificationimp/telegram/client.go

@@ -0,0 +1,149 @@
+package telegram
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"strconv"
+	"strings"
+	"time"
+
+	notconfig "github.com/tech/sendico/notification/interface/services/notification/config"
+	"github.com/tech/sendico/pkg/mlogger"
+	"github.com/tech/sendico/pkg/model"
+)
+
+const defaultAPIURL = "https://api.telegram.org"
+
+type Client interface {
+	SendDemoRequest(ctx context.Context, request *model.DemoRequest) error
+}
+
+type client struct {
+	logger     mlogger.Logger
+	httpClient *http.Client
+	apiURL     string
+	botToken   string
+	chatID     string
+	threadID   *int64
+	parseMode  string
+}
+
+type sendMessagePayload struct {
+	ChatID         string `json:"chat_id"`
+	Text           string `json:"text"`
+	ParseMode      string `json:"parse_mode,omitempty"`
+	ThreadID       *int64 `json:"message_thread_id,omitempty"`
+	DisablePreview bool   `json:"disable_web_page_preview,omitempty"`
+	DisableNotify  bool   `json:"disable_notification,omitempty"`
+	ProtectContent bool   `json:"protect_content,omitempty"`
+}
+
+func NewClient(logger mlogger.Logger, cfg *notconfig.TelegramConfig) (Client, error) {
+	if cfg == nil {
+		return nil, fmt.Errorf("telegram configuration is not provided")
+	}
+	token := strings.TrimSpace(os.Getenv(cfg.BotTokenEnv))
+	if token == "" {
+		return nil, fmt.Errorf("telegram bot token env %s is empty", cfg.BotTokenEnv)
+	}
+	chatID := strings.TrimSpace(os.Getenv(cfg.ChatIDEnv))
+	if chatID == "" {
+		return nil, fmt.Errorf("telegram chat id env %s is empty", cfg.ChatIDEnv)
+	}
+
+	var threadID *int64
+	if env := strings.TrimSpace(cfg.ThreadIDEnv); env != "" {
+		raw := strings.TrimSpace(os.Getenv(env))
+		if raw != "" {
+			val, err := strconv.ParseInt(raw, 10, 64)
+			if err != nil {
+				return nil, fmt.Errorf("telegram thread id env %s is invalid: %w", env, err)
+			}
+			threadID = &val
+		}
+	}
+
+	timeout := time.Duration(cfg.TimeoutSeconds) * time.Second
+	if timeout <= 0 {
+		timeout = 10 * time.Second
+	}
+
+	apiURL := strings.TrimSpace(cfg.APIURL)
+	if apiURL == "" {
+		apiURL = defaultAPIURL
+	}
+
+	return &client{
+		logger: logger.Named("telegram"),
+		httpClient: &http.Client{
+			Timeout: timeout,
+		},
+		apiURL:    strings.TrimRight(apiURL, "/"),
+		botToken:  token,
+		chatID:    chatID,
+		threadID:  threadID,
+		parseMode: strings.TrimSpace(cfg.ParseMode),
+	}, nil
+}
+
+func (c *client) SendDemoRequest(ctx context.Context, request *model.DemoRequest) error {
+	if request == nil {
+		return fmt.Errorf("demo request payload is nil")
+	}
+	message := buildMessage(request)
+	payload := sendMessagePayload{
+		ChatID:         c.chatID,
+		Text:           message,
+		ParseMode:      c.parseMode,
+		ThreadID:       c.threadID,
+		DisablePreview: true,
+	}
+	return c.sendMessage(ctx, payload)
+}
+
+func (c *client) sendMessage(ctx context.Context, payload sendMessagePayload) error {
+	body, err := json.Marshal(&payload)
+	if err != nil {
+		return err
+	}
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, c.endpoint(), bytes.NewReader(body))
+	if err != nil {
+		return err
+	}
+	req.Header.Set("Content-Type", "application/json")
+
+	resp, err := c.httpClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode >= http.StatusOK && resp.StatusCode < http.StatusMultipleChoices {
+		return nil
+	}
+	respBody, _ := io.ReadAll(io.LimitReader(resp.Body, 4<<10))
+	return fmt.Errorf("telegram sendMessage failed with status %d: %s", resp.StatusCode, string(respBody))
+}
+
+func (c *client) endpoint() string {
+	return fmt.Sprintf("%s/bot%s/sendMessage", c.apiURL, c.botToken)
+}
+
+func buildMessage(req *model.DemoRequest) string {
+	var builder strings.Builder
+	builder.WriteString("New demo request received\n")
+	builder.WriteString(fmt.Sprintf("Name: %s\n", req.Name))
+	builder.WriteString(fmt.Sprintf("Organization: %s\n", req.OrganizationName))
+	builder.WriteString(fmt.Sprintf("Phone: %s\n", req.Phone))
+	builder.WriteString(fmt.Sprintf("Work email: %s\n", req.WorkEmail))
+	builder.WriteString(fmt.Sprintf("Payout volume: %s\n", req.PayoutVolume))
+	if req.Comment != "" {
+		builder.WriteString(fmt.Sprintf("Comment: %s\n", req.Comment))
+	}
+	return builder.String()
+}