E-Commerce Platform with Golang : Setting Up Go Modules and Initial Configurations

Here I have provided a step-by-step guide on how to set up the project

Create the project directory

mkdir rmshop-clean-architecture
cd rmshop-clean-architecture

Initialize Go modules

go mod init github.com/yourusername/rmshop-clean-architecture

Set up the main application entry point (cmd/api/main.go)

package main

import (
    "log"
    "net/http"

    "github.com/yourusername/rmshop-clean-architecture/internal/config"
    "github.com/yourusername/rmshop-clean-architecture/internal/server"
)

func main() {
    cfg, err := config.Load()
    if err != nil {
        log.Fatalf("Failed to load config: %v", err)
    }

    srv, err := server.New(cfg)
    if err != nil {
        log.Fatalf("Failed to create server: %v", err)
    }

    log.Printf("Starting server on :%s", cfg.Server.Port)
    if err := http.ListenAndServe(":"+cfg.Server.Port, srv); err != nil {
        log.Fatalf("Failed to start server: %v", err)
    }
}

Create a basic configuration file (internal/config/config.go)

package config

import "github.com/spf13/viper"

type Config struct {
    Server ServerConfig
    DB     DBConfig
}

type ServerConfig struct {
    Port string
}

type DBConfig struct {
    Host     string
    Port     string
    User     string
    Password string
    DBName   string
}

func Load() (*Config, error) {
    viper.SetConfigName("config")
    viper.SetConfigType("yaml")
    viper.AddConfigPath(".")
    viper.AddConfigPath("./config")

    if err := viper.ReadInConfig(); err != nil {
        return nil, err
    }

    var config Config
    if err := viper.Unmarshal(&config); err != nil {
        return nil, err
    }

    return &config, nil
}

Create a config.yaml file in the project root

server:
  port: "8080"

db:
  host: "localhost"
  port: "5432"
  user: "postgres"
  password: "your_password"
  dbname: "rmshop"

Initialize the basic server setup (internal/server/server.go)

package server

import (
    "net/http"

    "github.com/yourusername/rmshop-clean-architecture/internal/config"
)

type Server struct {
    router http.Handler
}

func New(cfg *config.Config) (*Server, error) {
    // Initialize your router, database connection, and other dependencies here
    // For now, we'll just return a basic server
    return &Server{
        router: http.NewServeMux(),
    }, nil
}

func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
    s.router.ServeHTTP(w, r)
}

Install necessary dependencies

go get github.com/spf13/viper
go get github.com/lib/pq

This setup provides a solid foundation for your e-commerce project, adhering to clean architecture principles. In the next sections, we'll build upon this structure to implement our business logic, database interactions, and API endpoints.