From b6841ed2a397ea60e3ebabc22f2f841ff2e80739 Mon Sep 17 00:00:00 2001
From: Acho Arnold <arnold@ndolestudio.com>
Date: Wed, 29 Nov 2023 23:33:49 +0200
Subject: [PATCH] Add code to remove contacts from sendgrid list

---
 api/cmd/experiments/main.go            | 32 ++++++++++++++++++++++++--
 api/pkg/services/marketting_service.go | 13 +++++++----
 2 files changed, 38 insertions(+), 7 deletions(-)

diff --git a/api/cmd/experiments/main.go b/api/cmd/experiments/main.go
index a2b8b730..7ab7be23 100644
--- a/api/cmd/experiments/main.go
+++ b/api/cmd/experiments/main.go
@@ -5,9 +5,12 @@ import (
 	"fmt"
 	"log"
 	"os"
+	"strings"
 	"sync"
 	"time"
 
+	"github.com/palantir/stacktrace"
+
 	"github.com/NdoleStudio/httpsms/pkg/di"
 	"github.com/NdoleStudio/httpsms/pkg/entities"
 	"github.com/google/uuid"
@@ -27,11 +30,36 @@ func main() {
 	logger := container.Logger()
 
 	logger.Info("Starting experiments")
+}
+
+func chunkBy[T any](items []T, chunkSize int) (chunks [][]T) {
+	for chunkSize < len(items) {
+		items, chunks = items[chunkSize:], append(chunks, items[0:chunkSize:chunkSize])
+	}
+	return append(chunks, items)
+}
 
+func deleteContacts(container *di.Container) {
 	sendgrid := container.MarketingService()
-	err = sendgrid.ClearList(context.Background())
+	logger := container.Logger()
+
+	b, err := os.ReadFile("28462979_cf6f5478-3e15-4666-95d7-59149df6f0fd.csv") // just pass the file name
 	if err != nil {
-		logger.Fatal(err)
+		logger.Fatal(stacktrace.Propagate(err, "cannot read file"))
+	}
+
+	lines := strings.Split(string(b), "\n")[1:]
+	var contacts []string
+	for _, line := range lines {
+		contacts = append(contacts, strings.ReplaceAll(strings.Split(line, ",")[17], "\"", ""))
+	}
+
+	chunks := chunkBy(contacts, 100)
+	for _, chunk := range chunks {
+		err = sendgrid.DeleteContacts(context.Background(), chunk)
+		if err != nil {
+			logger.Fatal(err)
+		}
 	}
 }
 
diff --git a/api/pkg/services/marketting_service.go b/api/pkg/services/marketting_service.go
index 49b52bd9..b6513dec 100644
--- a/api/pkg/services/marketting_service.go
+++ b/api/pkg/services/marketting_service.go
@@ -78,17 +78,20 @@ func (service *MarketingService) AddToList(ctx context.Context, user *entities.U
 	ctxLogger.Info(fmt.Sprintf("user [%s] added to list [%s] with job [%s]", user.ID, service.sendgridListID, id))
 }
 
-// ClearList removes all new contacts from the sendgrid list.
-func (service *MarketingService) ClearList(ctx context.Context) error {
+// DeleteContacts deletes contacts from sendgrid
+func (service *MarketingService) DeleteContacts(ctx context.Context, contactIDs []string) error {
 	ctx, span, ctxLogger := service.tracer.StartWithLogger(ctx, service.logger)
 	defer span.End()
 
-	request := sendgrid.GetRequest(service.sendgridAPIKey, fmt.Sprintf("/v3/contactdb/lists/%s/recipients", service.sendgridListID), "https://api.sendgrid.com")
-	request.Method = "GET"
+	request := sendgrid.GetRequest(service.sendgridAPIKey, "/v3/marketing/contacts", "https://api.sendgrid.com")
+	request.Method = "DELETE"
+	request.QueryParams = map[string]string{
+		"ids": strings.Join(contactIDs, ","),
+	}
 
 	response, err := sendgrid.API(request)
 	if err != nil {
-		return stacktrace.Propagate(err, fmt.Sprintf("cannot get all contacts in a sendgrid list [%s]", service.sendgridListID))
+		return stacktrace.Propagate(err, fmt.Sprintf("cannot delete contacts in a sendgrid list [%s]", service.sendgridListID))
 	}
 
 	ctxLogger.Info(spew.Sdump(response.Body))