Mail api for sending order confirmation to planetposen customers

server/handler/confirmation.go

@@ -0,0 +1,55 @@
+// Package handler contains handlers for events.
+package handler
+
+import (
+	"encoding/json"
+	"fmt"
+	"github.com/kevinmidboe/planetposen-mail/client/sendgrid"
+	"github.com/kevinmidboe/planetposen-mail/mail"
+	"net/http"
+)
+
+func SendOrderConfirmation(s *sendgrid.Client) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		ctx := r.Context()
+		payload, err := getOrderConfirmationPayload(r)
+
+		if err != nil {
+			handleError(w, err, "unable to parse order payload", http.StatusBadRequest, true)
+			return
+		}
+		mailData, err := mail.OrderConfirmation(*payload)
+
+		err = s.SendOrderConfirmation(ctx, *mailData)
+		if err != nil {
+			fmt.Println(err)
+			handleError(w, err, "error from sendgrid ", http.StatusInternalServerError, true)
+			return
+		}
+
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(http.StatusOK)
+		responseJSON, _ := json.Marshal(struct {
+			Message   string `json:"message"`
+			OrderId   string `json:"orderId"`
+			Recipient string `json:"recipient"`
+		}{
+			Message:   "Successfully sent email",
+			OrderId:   payload.OrderId,
+			Recipient: payload.Email,
+		})
+		w.Write(responseJSON)
+	}
+}
+
+func getOrderConfirmationPayload(r *http.Request) (*mail.OrderConfirmationData, error) {
+	decoder := json.NewDecoder(r.Body)
+
+	var payload mail.OrderConfirmationData
+	err := decoder.Decode(&payload)
+	if err != nil {
+		return nil, fmt.Errorf("decode: %w", err)
+	}
+
+	return &payload, nil
+}

server/handler/error.go

@@ -0,0 +1,24 @@
+package handler
+
+import (
+	"encoding/json"
+	"net/http"
+
+	log "github.com/sirupsen/logrus"
+)
+
+// handleError - Logs the error (if shouldLog is true), and outputs the error message (msg)
+func handleError(w http.ResponseWriter, err error, msg string, statusCode int, shouldLog bool) {
+	if shouldLog {
+		log.WithField("err", err).Error(msg)
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(statusCode)
+	errorJSON, _ := json.Marshal(struct {
+		Error string `json:"error"`
+	}{
+		Error: msg,
+	})
+	w.Write(errorJSON)
+}

server/handler/healthz.go

@@ -0,0 +1,11 @@
+package handler
+
+import "net/http"
+
+// Healthz is used for our readiness and liveness probes.
+// 		GET /_healthz
+// 		Responds: 200
+func Healthz(w http.ResponseWriter, r *http.Request) {
+	w.WriteHeader(http.StatusOK)
+	w.Write([]byte(http.StatusText(http.StatusOK)))
+}