✨ nl basic operations

Makefile

@@ -19,7 +19,7 @@ test:
 
 .PHONY: integration-test
 integration-test:
-	go test -timeout 5s -tags=integration ./... 
+	go test -timeout 5s -tags=integration ./... -v
 
 ## builds the service
 .PHONY: service

mongodb/db.go

@@ -13,12 +13,21 @@ type Config struct {
 	URI string
 }
 
-// Connect connects to the MongoDB instance.
-func Connect(ctx context.Context, cfg Config) (*mongo.Client, error) {
-	client, err := mongo.Connect(ctx, options.Client().ApplyURI(cfg.URI))
+// OpenDB connects to the MongoDB instance.
+func OpenDB(ctx context.Context, cfg Config) (*mongo.Client, error) {
+	bsonOpts := &options.BSONOptions{
+		UseJSONStructTags: true,
+		NilSliceAsEmpty:   true,
+	}
+
+	client, err := mongo.Connect(ctx, options.Client().
+		ApplyURI(cfg.URI).
+		SetBSONOptions(bsonOpts))
+
 	if err != nil {
 		return nil, err
 	}
+
 	err = client.Ping(ctx, nil)
 	if err != nil {
 		return nil, err

mongodb/newsletter.go

@@ -0,0 +1,65 @@
+package mongodb
+
+import (
+	"context"
+	"time"
+
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/mongo"
+)
+
+// Newsletter is the struct that gather what websites to scrape for an user email
+type Newsletter struct {
+	UserEmail string   `bson:"user_email"`
+	URLs      []string `bson:"urls"`
+}
+
+// Site is the struct that gather the scraped content of a website
+type Site struct {
+	UserEmail  string    `bson:"user_email"`
+	URL        string    `bson:"url"`
+	Content    string    `bson:"content"`
+	ScrapeDate time.Time `bson:"scrape_date"`
+}
+
+// NLStorage joins the Mongo operations for the Newsletter collection
+type NLStorage struct {
+	client *mongo.Client
+	DBName string
+}
+
+// NewNLStorage initializes a new NLStorage
+func NewNLStorage(client *mongo.Client, DBName string) *NLStorage {
+	return &NLStorage{
+		client: client,
+		DBName: DBName,
+	}
+}
+
+// SaveNewsletter saves a newsletter in the database
+func (m *NLStorage) SaveNewsletter(ctx context.Context, newsletter Newsletter) error {
+	database := m.client.Database(m.DBName)
+	collection := database.Collection("newsletter")
+	_, err := collection.InsertOne(ctx, newsletter)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+// Newsletter returns all the newsletters in the database
+func (m *NLStorage) Newsletter() ([]Newsletter, error) {
+	var newsletters []Newsletter
+	database := m.client.Database(m.DBName)
+	collection := database.Collection("newsletter")
+	cursor, err := collection.Find(context.Background(), bson.M{})
+	if err != nil {
+		return nil, err
+	}
+
+	if err = cursor.All(context.Background(), &newsletters); err != nil {
+		return nil, err
+	}
+
+	return newsletters, nil
+}

mongodb/newsletter_test.go

@@ -0,0 +1,118 @@
+//go:build integration
+// +build integration
+
+package mongodb
+
+import (
+	"context"
+	"fmt"
+	"reflect"
+	"testing"
+	"time"
+
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/mongo"
+)
+
+func TestNLStorageSaveNewsletter(t *testing.T) {
+	ctx := context.Background()
+	client, DBName := setup(ctx, t)
+
+	database := client.Database(DBName)
+	collection := database.Collection("newsletter")
+
+	NLStorage := NewNLStorage(client, DBName)
+	err := NLStorage.SaveNewsletter(ctx, Newsletter{
+		UserEmail: "[email protected]",
+		URLs:      []string{"https://www.google.com"},
+	})
+
+	if err != nil {
+		t.Fatal("error saving newsletter", err)
+	}
+
+	var nls []Newsletter
+	cursor, err := collection.Find(context.Background(), bson.M{})
+
+	if err != nil {
+		t.Fatal("error finding newsletter", err)
+	}
+
+	if err := cursor.All(ctx, &nls); err != nil {
+		t.Fatal("error decoding newsletter", err)
+	}
+
+	if len(nls) == 1 {
+		reflect.DeepEqual(nls[0], Newsletter{
+			UserEmail: "[email protected]",
+			URLs:      []string{"https://www.google.com"},
+		})
+	} else {
+		t.Fatal("expected 1 newsletter, got", len(nls))
+	}
+
+	t.Cleanup(teardown(ctx, client, DBName))
+}
+
+func TestNLStorageNewsletter(t *testing.T) {
+	ctx := context.Background()
+	client, DBName := setup(ctx, t)
+
+	database := client.Database(DBName)
+	collection := database.Collection("newsletter")
+
+	_, err := collection.InsertOne(ctx, Newsletter{
+		UserEmail: "[email protected]",
+		URLs:      []string{"https://www.google.com"},
+	})
+
+	if err != nil {
+		t.Fatal("error saving newsletter", err)
+	}
+
+	NLStorage := NewNLStorage(client, DBName)
+	nls, err := NLStorage.Newsletter()
+	if err != nil {
+		t.Fatal("error getting newsletter", err)
+	}
+
+	if len(nls) == 1 {
+		reflect.DeepEqual(nls[0], Newsletter{
+			UserEmail: "[email protected]",
+			URLs:      []string{"https://www.google.com"},
+		})
+	} else {
+		t.Fatal("expected 1 newsletter, got", len(nls))
+	}
+
+	t.Cleanup(teardown(ctx, client, DBName))
+}
+
+func assert(t testing.TB, got, want interface{}) {
+	t.Helper()
+	if got != want {
+		t.Fatalf("got %v, want %v", got, want)
+	}
+}
+
+func teardown(ctx context.Context, client *mongo.Client, DBName string) func() {
+	return func() {
+		if err := client.Database(DBName).Drop(ctx); err != nil {
+			panic(err)
+		}
+	}
+}
+
+func setup(ctx context.Context, t testing.TB) (*mongo.Client, string) {
+	// TODO: Receive the URI from the environment variable
+	URI := "mongodb://root:root@mongodb:27017/"
+	client, err := OpenDB(ctx, Config{
+		URI: URI,
+	})
+	if err != nil {
+		panic(err)
+	}
+
+	DBName := t.Name() + fmt.Sprintf("%d", time.Now().UnixNano())
+	return client, DBName
+}