NdoleStudio · AchoArnold · Mar 4, 2023 · Mar 4, 2023
diff --git a/api/pkg/handlers/message_handler.go b/api/pkg/handlers/message_handler.go
@@ -4,6 +4,8 @@ import (
 	"fmt"
 	"time"
 
+	"github.com/NdoleStudio/httpsms/pkg/entities"
+
 	"github.com/NdoleStudio/httpsms/pkg/repositories"
 	"github.com/google/uuid"
 
@@ -46,6 +48,7 @@ func NewMessageHandler(
 // RegisterRoutes registers the routes for the MessageHandler
 func (h *MessageHandler) RegisterRoutes(router fiber.Router) {
 	router.Post("/messages/send", h.PostSend)
+	router.Post("/messages/bulk-send", h.BulkSend)
 	router.Post("/messages/receive", h.PostReceive)
 	router.Get("/messages/outstanding", h.GetOutstanding)
 	router.Get("/messages", h.Index)
@@ -100,6 +103,59 @@ func (h *MessageHandler) PostSend(c *fiber.Ctx) error {
 	return h.responseOK(c, "message added to queue", message)
 }
 
+// BulkSend a bulk entities.Message
+// @Summary      Send bulk SMS messages
+// @Description  Add bulk SMS messages to be sent by the android phone
+// @Security	 ApiKeyAuth
+// @Tags         Messages
+// @Accept       json
+// @Produce      json
+// @Param        payload   body requests.MessageBulkSend  true  "Bulk send message request payload"
+// @Success      200  {object}  []responses.MessagesResponse
+// @Failure      400  {object}  responses.BadRequest
+// @Failure 	 401  {object}	responses.Unauthorized
+// @Failure      422  {object}  responses.UnprocessableEntity
+// @Failure      500  {object}  responses.InternalServerError
+// @Router       /messages/bulk-send [post]
+func (h *MessageHandler) BulkSend(c *fiber.Ctx) error {
+	ctx, span := h.tracer.StartFromFiberCtx(c)
+	defer span.End()
+
+	ctxLogger := h.tracer.CtxLogger(h.logger, span)
+
+	var request requests.MessageBulkSend
+	if err := c.BodyParser(&request); err != nil {
+		msg := fmt.Sprintf("cannot marshall [%s] into %T", c.Body(), request)
+		ctxLogger.Warn(stacktrace.Propagate(err, msg))
+		return h.responseBadRequest(c, err)
+	}
+
+	if errors := h.validator.ValidateMessageBulkSend(ctx, h.userIDFomContext(c), request.Sanitize()); len(errors) != 0 {
+		msg := fmt.Sprintf("validation errors [%s], while sending payload [%s]", spew.Sdump(errors), c.Body())
+		ctxLogger.Warn(stacktrace.NewError(msg))
+		return h.responseUnprocessableEntity(c, errors, "validation errors while sending messages")
+	}
+
+	var responses []*entities.Message
+	params := request.ToMessageSendParams(h.userIDFomContext(c), c.OriginalURL())
+	for _, param := range params {
+		if msg := h.billingService.IsEntitled(ctx, h.userIDFomContext(c)); msg != nil {
+			ctxLogger.Warn(stacktrace.NewError(fmt.Sprintf("user with ID [%s] can't send a message", h.userIDFomContext(c))))
+			break
+		}
+
+		message, err := h.service.SendMessage(ctx, param)
+		if err != nil {
+			msg := fmt.Sprintf("cannot send message with paylod [%s]", c.Body())
+			ctxLogger.Error(stacktrace.Propagate(err, msg))
+			break
+		}
+		responses = append(responses, message)
+	}
+
+	return h.responseOK(c, "messages added to queue", responses)
+}
+
 // GetOutstanding returns an entities.Message which is still to be sent by the mobile phone
 // @Summary      Get an outstanding message
 // @Description  Get an outstanding message to be sent by an android phone

diff --git a/api/pkg/requests/message_bulk_send_request.go b/api/pkg/requests/message_bulk_send_request.go
@@ -0,0 +1,49 @@
+package requests
+
+import (
+	"time"
+
+	"github.com/NdoleStudio/httpsms/pkg/entities"
+
+	"github.com/nyaruka/phonenumbers"
+
+	"github.com/NdoleStudio/httpsms/pkg/services"
+)
+
+// MessageBulkSend is the payload for sending bulk SMS messages
+type MessageBulkSend struct {
+	request
+	From    string   `json:"from" example:"+18005550199"`
+	To      []string `json:"to" example:"[+18005550100,+18005550100]"`
+	Content string   `json:"content" example:"This is a sample text message"`
+}
+
+// Sanitize sets defaults to MessageReceive
+func (input *MessageBulkSend) Sanitize() MessageBulkSend {
+	var to []string
+	for _, address := range input.To {
+		to = append(to, input.sanitizeAddress(address))
+	}
+	input.To = to
+	input.From = input.sanitizeAddress(input.From)
+	return *input
+}
+
+// ToMessageSendParams converts MessageSend to services.MessageSendParams
+func (input *MessageBulkSend) ToMessageSendParams(userID entities.UserID, source string) []services.MessageSendParams {
+	from, _ := phonenumbers.Parse(input.From, phonenumbers.UNKNOWN_REGION)
+	var result []services.MessageSendParams
+	for _, to := range input.To {
+		toAddress, _ := phonenumbers.Parse(to, phonenumbers.UNKNOWN_REGION)
+		result = append(result, services.MessageSendParams{
+			Source:            source,
+			Owner:             *from,
+			UserID:            userID,
+			RequestReceivedAt: time.Now().UTC(),
+			Contact:           *toAddress,
+			Content:           input.Content,
+		})
+	}
+
+	return result
+}
diff --git a/api/pkg/validators/message_handler_validator.go b/api/pkg/validators/message_handler_validator.go
@@ -105,6 +105,52 @@ func (validator MessageHandlerValidator) ValidateMessageSend(ctx context.Context
 	return result
 }
 
+// ValidateMessageBulkSend validates the requests.MessageBulkSend request
+func (validator MessageHandlerValidator) ValidateMessageBulkSend(ctx context.Context, userID entities.UserID, request requests.MessageBulkSend) url.Values {
+	ctx, span := validator.tracer.Start(ctx)
+	defer span.End()
+
+	ctxLogger := validator.tracer.CtxLogger(validator.logger, span)
+
+	v := govalidator.New(govalidator.Options{
+		Data: &request,
+		Rules: govalidator.MapData{
+			"to": []string{
+				"required",
+				"max:50",
+				"min:1",
+				multiplePhoneNumberRule,
+			},
+			"from": []string{
+				"required",
+				phoneNumberRule,
+			},
+			"content": []string{
+				"required",
+				"min:1",
+				"max:1024",
+			},
+		},
+	})
+
+	result := v.ValidateStruct()
+	if len(result) != 0 {
+		return result
+	}
+
+	_, err := validator.phoneService.Load(ctx, userID, request.From)
+	if stacktrace.GetCode(err) == repositories.ErrCodeNotFound {
+		result.Add("from", fmt.Sprintf("no phone found with with 'from' number [%s]. Install the android app on your phone to start sending messages", request.From))
+	}
+
+	if err != nil {
+		ctxLogger.Error(validator.tracer.WrapErrorSpan(span, stacktrace.Propagate(err, fmt.Sprintf("could not load phone for user [%s] and phone [%s]", userID, request.From))))
+		result.Add("from", fmt.Sprintf("could not validate 'from' number [%s], please try again later", request.From))
+	}
+
+	return result
+}
+
 // ValidateMessageOutstanding validates the requests.MessageOutstanding request
 func (validator MessageHandlerValidator) ValidateMessageOutstanding(_ context.Context, request requests.MessageOutstanding) url.Values {
 	v := govalidator.New(govalidator.Options{

diff --git a/api/pkg/validators/validator.go b/api/pkg/validators/validator.go
@@ -14,8 +14,9 @@ import (
 type validator struct{}
 
 const (
-	phoneNumberRule   = "phoneNumber"
-	webhookEventsRule = "webhookEvents"
+	phoneNumberRule         = "phoneNumber"
+	multiplePhoneNumberRule = "multiplePhoneNumber"
+	webhookEventsRule       = "webhookEvents"
 )
 
 func init() {
@@ -35,6 +36,22 @@ func init() {
 		return nil
 	})
 
+	govalidator.AddCustomRule(multiplePhoneNumberRule, func(field string, rule string, message string, value interface{}) error {
+		phoneNumbers, ok := value.([]string)
+		if !ok {
+			return fmt.Errorf("the %s field must be an array of a valid E.164 phone number: https://en.wikipedia.org/wiki/E.164", field)
+		}
+
+		for index, number := range phoneNumbers {
+			_, err := phonenumbers.Parse(number, phonenumbers.UNKNOWN_REGION)
+			if err != nil {
+				return fmt.Errorf("the %s value in index [%d] must be a valid E.164 phone number: https://en.wikipedia.org/wiki/E.164", field, index)
+			}
+		}
+
+		return nil
+	})
+
 	govalidator.AddCustomRule(webhookEventsRule, func(field string, rule string, message string, value interface{}) error {
 		input, ok := value.([]string)
 		if !ok {