commit ebf09740fc7ead9618001475f42de7dc335fb3bd · bretton.dev/coves

+120
internal/sms/telnyx/client.go
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       package telnyx

     

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       import (

     

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       	"bytes"

     

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       	"context"

     

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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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       	"time"

     

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       )

     

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       const (

     

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       	TelnyxAPIBaseURL = "https://api.telnyx.com/v2"

     

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       	SendMessagePath  = "/messages"

     

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       )

     

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       // Client handles communication with Telnyx API

     

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       type Client struct {

     

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       	apiKey             string

     

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       	messagingProfileID string

     

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       	fromNumber         string

     

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       	httpClient         *http.Client

     

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       }

     

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       // NewClient creates a new Telnyx client

     

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       func NewClient(apiKey, messagingProfileID, fromNumber string) *Client {

     

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       	return &Client{

     

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       		apiKey:             apiKey,

     

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       		messagingProfileID: messagingProfileID,

     

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       		fromNumber:         fromNumber,

     

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       		httpClient: &http.Client{

     

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       			Timeout: 10 * time.Second,

     

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       		},

     

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       	}

     

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       }

     

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       // SendOTP sends an OTP code via SMS

     

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       func (c *Client) SendOTP(ctx context.Context, phoneNumber, code string) error {

     

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       	message := fmt.Sprintf("Your Coves verification code is: %s\n\nThis code expires in 10 minutes.", code)

     

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       	req := &SendMessageRequest{

     

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       		From:               c.fromNumber,

     

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       		To:                 phoneNumber,

     

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       		Text:               message,

     

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       		MessagingProfileID: c.messagingProfileID,

     

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       	}

     

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       	reqBody, err := json.Marshal(req)

     

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       	if err != nil {

     

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       		return fmt.Errorf("failed to marshal request: %w", err)

     

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       	}

     

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       	httpReq, err := http.NewRequestWithContext(ctx, "POST", TelnyxAPIBaseURL+SendMessagePath, bytes.NewReader(reqBody))

     

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       	if err != nil {

     

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       		return fmt.Errorf("failed to create request: %w", err)

     

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       	}

     

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       	httpReq.Header.Set("Authorization", "Bearer "+c.apiKey)

     

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       	httpReq.Header.Set("Content-Type", "application/json")

     

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       	resp, err := c.httpClient.Do(httpReq)

     

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       	if err != nil {

     

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       		return fmt.Errorf("failed to send request: %w", err)

     

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       	}

     

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       	defer resp.Body.Close()

     

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       	body, _ := io.ReadAll(resp.Body)

     

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       	if resp.StatusCode != http.StatusOK && resp.StatusCode != http.StatusCreated {

     

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       		var telnyxErr TelnyxErrorResponse

     

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       		if err := json.Unmarshal(body, &telnyxErr); err == nil && len(telnyxErr.Errors) > 0 {

     

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       			return fmt.Errorf("telnyx API error: %s (code: %s)", telnyxErr.Errors[0].Detail, telnyxErr.Errors[0].Code)

     

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       		}

     

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       		return fmt.Errorf("telnyx API error: status %d, body: %s", resp.StatusCode, string(body))

     

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       	}

     

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       	var msgResp SendMessageResponse

     

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       	if err := json.Unmarshal(body, &msgResp); err != nil {

     

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       		return fmt.Errorf("failed to parse response: %w", err)

     

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       	}

     

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       	// Check if message was accepted

     

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       	if msgResp.Data.ID == "" {

     

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       		return fmt.Errorf("message not accepted by Telnyx")

     

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       	}

     

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       	return nil

     

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       }

     

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       // SendMessageRequest represents a Telnyx send message request

     

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       type SendMessageRequest struct {

     

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       	From               string `json:"from"`

     

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       	To                 string `json:"to"`

     

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       	Text               string `json:"text"`

     

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       	MessagingProfileID string `json:"messaging_profile_id"`

     

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       }

     

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       // SendMessageResponse represents a Telnyx send message response

     

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       type SendMessageResponse struct {

     

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       	Data MessageData `json:"data"`

     

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       }

     

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       // MessageData represents message data in Telnyx response

     

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       type MessageData struct {

     

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       	ID     string `json:"id"`

     

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       	Status string `json:"status"`

     

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       }

     

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       // TelnyxErrorResponse represents an error response from Telnyx

     

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       type TelnyxErrorResponse struct {

     

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       	Errors []TelnyxError `json:"errors"`

     

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       }

     

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       // TelnyxError represents a single error from Telnyx

     

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       type TelnyxError struct {

     

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       	Code   string `json:"code"`

     

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       	Detail string `json:"detail"`

     

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       	Title  string `json:"title"`

     

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       }