Add Account Creation Feature

Author: tyouwei

account-creation-service/.gitignore

@@ -0,0 +1 @@
+.env.dev

account-creation-service/Dockerfile

@@ -0,0 +1,20 @@
+# Use the official Golang image as the base image
+FROM golang:1.23-alpine
+
+# Set the working directory inside the container
+WORKDIR /app
+
+# Copy the Go module files
+COPY go.mod go.sum ./
+
+# Download the Go module dependencies
+RUN go mod download
+
+# Copy the source code
+COPY . .
+
+# Build the Go application
+RUN go build -o main ./main.go
+
+# Set the entry point for the container
+ENTRYPOINT ["./main"]

account-creation-service/README.md

@@ -0,0 +1,46 @@
+# Account Creation Service
+
+## Setup
+
+Run the following command to install the dependencies
+
+```bash
+docker build -t account-creation-service . --no-cache
+docker run -p 4040:4040 --env-file .env acc account-creation-service
+```
+
+## Example Usage
+
+1. Make sure your json struct has a similar structure:
+``` {
+  "email": "[email protected]",
+  "name": "exampleUser",
+  "password": "securePassword123",
+  "type": "User"
+}```
+
+2. Make a POST request to http://localhost:4040/register
+
+## Template code for Javascript
+
+```const myHeaders = new Headers();
+myHeaders.append("Content-Type", "application/json");
+
+const raw = JSON.stringify({
+  "email": "[email protected]",
+  "name": "exampleUser",
+  "password": "securePassword123",
+  "type": "User"
+});
+
+const requestOptions = {
+  method: "POST",
+  headers: myHeaders,
+  body: raw,
+  redirect: "follow"
+};
+
+fetch("http://localhost:4040/register", requestOptions)
+  .then((response) => response.text())
+  .then((result) => console.log(result))
+  .catch((error) => console.error(error));```

account-creation-service/go.mod

@@ -0,0 +1,43 @@
+module login-service
+
+go 1.23.1
+
+require (
+	github.com/bytedance/sonic v1.12.3 // indirect
+	github.com/bytedance/sonic/loader v0.2.0 // indirect
+	github.com/cloudwego/base64x v0.1.4 // indirect
+	github.com/cloudwego/iasm v0.2.0 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.5 // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/gin-gonic/gin v1.10.0 // indirect
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-playground/validator/v10 v10.22.1 // indirect
+	github.com/goccy/go-json v0.10.3 // indirect
+	github.com/golang/snappy v0.0.4 // indirect
+	github.com/joho/godotenv v1.5.1 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/compress v1.13.6 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.8 // indirect
+	github.com/leodido/go-urn v1.4.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/montanaflynn/stats v0.7.1 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.3 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.2.12 // indirect
+	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
+	github.com/xdg-go/scram v1.1.2 // indirect
+	github.com/xdg-go/stringprep v1.0.4 // indirect
+	github.com/youmark/pkcs8 v0.0.0-20240726163527-a2c0da244d78 // indirect
+	go.mongodb.org/mongo-driver v1.17.0 // indirect
+	golang.org/x/arch v0.10.0 // indirect
+	golang.org/x/crypto v0.27.0 // indirect
+	golang.org/x/net v0.29.0 // indirect
+	golang.org/x/sync v0.8.0 // indirect
+	golang.org/x/sys v0.25.0 // indirect
+	golang.org/x/text v0.18.0 // indirect
+	google.golang.org/protobuf v1.34.2 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

account-creation-service/go.sum

@@ -0,0 +1,121 @@
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account-creation-service/main.go

@@ -0,0 +1,112 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"time"
+
+	"github.com/gin-gonic/gin"
+	"go.mongodb.org/mongo-driver/bson"
+	"go.mongodb.org/mongo-driver/mongo"
+	"go.mongodb.org/mongo-driver/mongo/options"
+	"golang.org/x/crypto/bcrypt"
+	"github.com/joho/godotenv"
+)
+
+type User struct {
+	Email     string `json:"email" bson:"email"`
+	Name  string `json:"name" bson:"name"`
+	Password  string `json:"password" bson:"password"`
+	CreatedAt time.Time `bson:"createdDate"`
+	Type string `bson:"accountType"`
+}
+
+var userCollection *mongo.Collection
+
+func connectDB() *mongo.Client {
+	// Load env variables
+	err := godotenv.Load()
+	if err != nil {
+		log.Fatalf("Error loading .env file")
+	}
+
+	// get MongoDB URI
+	mongoURI := os.Getenv("MONGODB_URI")
+
+	// Client to the mongodb atlas
+	clientOptions := options.Client().
+		ApplyURI(mongoURI)
+
+	// Connect to MongoDB
+	client, err := mongo.Connect(context.TODO(), clientOptions)
+	if err != nil {
+		log.Fatalf("MongoDB connection error: %v", err)
+	}
+
+	fmt.Println("MongoDB connected")
+	return client
+}
+
+func hashPassword(password string) (string, error) {
+	bytes, err := bcrypt.GenerateFromPassword([]byte(password), 14)
+	return string(bytes), err
+}
+
+func registerUser(c *gin.Context) {
+	var user User
+
+	// If JSON request does not fit into our User struct, status error
+	if err := c.ShouldBindJSON(&user); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Invalid request data"})
+		return
+	}
+
+	// If any fields are empty, status error
+	if user.Email == "" || user.Name == "" || user.Password == "" {
+		log.Printf("Error inserting user into database: %v", user.Type)
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Email, username, password and type is required"})
+		return
+	}
+
+	// Check if email is unique
+	var existingUser User
+	err := userCollection.FindOne(context.TODO(), bson.M{"email": user.Email}).Decode(&existingUser)
+	if err == nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Email already exists"})
+		return
+	}
+
+	// Hash the password
+	hashedPassword, err := hashPassword(user.Password)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Error hashing password"})
+		return
+	}
+
+	user.Password = hashedPassword
+	user.CreatedAt = time.Now()
+	user.Type = "User"
+
+	// Insert new account into MongoDB
+	_, err = userCollection.InsertOne(context.TODO(), user)
+	if err != nil {
+		log.Printf("Error inserting user into database: %v", err) // Log the error
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Error inserting user into database"})
+		return
+	}
+
+	c.JSON(http.StatusCreated, gin.H{"message": "User registered successfully"})
+}
+
+func main() {
+	client := connectDB()
+	defer client.Disconnect(context.TODO())
+	userCollection = client.Database("Database1").Collection("user_account")
+	r := gin.Default()
+	r.POST("/register", registerUser)
+	port := os.Getenv("PORT")
+	r.Run(":" + port) 
+}