updatingGolangDB(izin jadi ishowspeed)

.env.example

@@ -0,0 +1,15 @@
+# Server Configuration
+# --------------------
+
+PORT=4000
+ENVIRONMENT=dev # Options: dev, stage, prod
+
+# PostgreSQL Database Configuration
+# ----------------------------------
+DB_HOST=localhost
+DB_PORT=5432
+DB_USER=postgres
+DB_PASSWORD=your_secure_password
+DB_NAME=snippetbox
+DB_SSLMODE=disable
+

.gitignore

@@ -0,0 +1,24 @@
+# Environment variables
+.env
+
+# Compiled binaries
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+server
+
+# Test binary
+*.test
+
+# Go build cache / output
+/tmp
+/bin
+
+# IDE / Editor
+.vscode/
+.idea/
+*.swp
+*.swo
+*~

go.mod

@@ -0,0 +1,16 @@
+module 5803025050
+
+go 1.27.0
+
+require (
+	github.com/jackc/pgx/v5 v5.11.0
+	github.com/joho/godotenv v1.5.1
+)
+
+require (
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
+	github.com/jackc/puddle/v2 v2.2.2 // indirect
+	golang.org/x/sync v0.17.0 // indirect
+	golang.org/x/text v0.29.0 // indirect
+)

go.sum

@@ -0,0 +1,28 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=
+github.com/jackc/pgpassfile v1.0.0/go.mod h1:CEx0iS5ambNFdcRtxPj5JhEz+xB6uRky5eyVu/W2HEg=
+github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 h1:iCEnooe7UlwOQYpKFhBabPMi4aNAfoODPEFNiAnClxo=
+github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761/go.mod h1:5TJZWKEWniPve33vlWYSoGYefn3gLQRzjfDlhSJ9ZKM=
+github.com/jackc/pgx/v5 v5.11.0 h1:IzBBtyK9AHqf98cctWFifYSci2hgQR/cd56wB4p+ogg=
+github.com/jackc/pgx/v5 v5.11.0/go.mod h1:mal1tBGAFfLHvZzaYh77YS/eC6IX9OWbRV1QIIM0Jn4=
+github.com/jackc/puddle/v2 v2.2.2 h1:PR8nw+E/1w0GLuRFSmiioY6UooMp6KJv0/61nB7icHo=
+github.com/jackc/puddle/v2 v2.2.2/go.mod h1:vriiEXHvEE654aYKXXjOvZM39qJ0q+azkZFrfEOc3H4=
+github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
+github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
+github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
+golang.org/x/sync v0.17.0 h1:l60nONMj9l5drqw6jlhIELNv9I0A4OFgRsG9k2oT9Ug=
+golang.org/x/sync v0.17.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
+golang.org/x/text v0.29.0 h1:1neNs90w9YzJ9BocxfsQNHKuAT4pkghyXc4nhZ6sJvk=
+golang.org/x/text v0.29.0/go.mod h1:7MhJOA9CD2qZyOKYazxdYMF85OwPdEr9jTtBpO7ydH4=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/config/config.go

@@ -0,0 +1,70 @@
+package config
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/joho/godotenv"
+)
+
+// Config holds all configuration values for the application.
+// Each field maps to an environment variable defined in .env.
+type Config struct {
+	// Server settings
+	Port        string // PORT — the port the HTTP server listens on
+	Environment string // ENVIRONMENT — dev, stage, or prod
+
+	// Database settings
+	DBHost     string // DB_HOST
+	DBPort     string // DB_PORT
+	DBUser     string // DB_USER
+	DBPassword string // DB_PASSWORD
+	DBName     string // DB_NAME
+	DBSSLMode  string // DB_SSLMODE
+}
+
+// LoadConfig reads the .env file and returns a populated Config struct.
+// It returns an error if the .env file is missing or a required variable is empty.
+func LoadConfig() (*Config, error) {
+	// Load .env file into environment variables
+	err := godotenv.Load()
+	if err != nil {
+		return nil, fmt.Errorf("error loading .env file: %w", err)
+	}
+
+	// Build the config from environment variables
+	cfg := &Config{
+		Port:        getEnv("PORT", "4000"),
+		Environment: getEnv("ENVIRONMENT", "dev"),
+		DBHost:      getEnv("DB_HOST", ""),
+		DBPort:      getEnv("DB_PORT", "5432"),
+		DBUser:      getEnv("DB_USER", ""),
+		DBPassword:  getEnv("DB_PASSWORD", ""),
+		DBName:      getEnv("DB_NAME", ""),
+		DBSSLMode:   getEnv("DB_SSLMODE", "disable"),
+	}
+
+	// Validate that critical database fields are not empty
+	if cfg.DBHost == "" || cfg.DBUser == "" || cfg.DBPassword == "" || cfg.DBName == "" {
+		return nil, fmt.Errorf("missing required database configuration (DB_HOST, DB_USER, DB_PASSWORD, or DB_NAME)")
+	}
+
+	return cfg, nil
+}
+
+// DatabaseURL builds a PostgreSQL connection string from the config fields.
+func (c *Config) DatabaseURL() string {
+	return fmt.Sprintf(
+		"postgres://%s:%s@%s:%s/%s?sslmode=%s",
+		c.DBUser, c.DBPassword, c.DBHost, c.DBPort, c.DBName, c.DBSSLMode,
+	)
+}
+
+// getEnv reads an environment variable or returns a default value.
+func getEnv(key, defaultValue string) string {
+	value := os.Getenv(key)
+	if value == "" {
+		return defaultValue
+	}
+	return value
+}

internal/database/database.go

@@ -0,0 +1,47 @@
+package database
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+
+	"5803025050/internal/config"
+)
+
+// ConnectDB establishes a connection pool to the PostgreSQL database
+// using the configuration values from Config.
+func ConnectDB(cfg *config.Config) (*pgxpool.Pool, error) {
+	dsn := cfg.DatabaseURL()
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	poolConfig, err := pgxpool.ParseConfig(dsn)
+	if err != nil {
+		return nil, fmt.Errorf("unable to parse database config: %w", err)
+	}
+
+	pool, err := pgxpool.NewWithConfig(ctx, poolConfig)
+	if err != nil {
+		return nil, fmt.Errorf("unable to create connection pool: %w", err)
+	}
+
+	if err := pool.Ping(ctx); err != nil {
+		pool.Close()
+		return nil, fmt.Errorf("unable to ping database: %w", err)
+	}
+
+	log.Println("database connection established")
+	return pool, nil
+}
+
+// CloseDB gracefully closes the database connection pool.
+func CloseDB(pool *pgxpool.Pool) {
+	if pool != nil {
+		pool.Close()
+		log.Println("database connection closed")
+	}
+}