Update environment variable for database connection and add user fixture script

.env.example

@@ -1 +1 @@
-DATABASE_URL=postgresql://postgres:password@localhost:5432/db
+PG_FROM_DB_URL=postgresql://postgres:password@localhost:5432/db

main.go

@@ -16,7 +16,7 @@ func main() {
 		log.Fatal("Error al cargar el archivo .env")
 	}
 
-	dbpool, err := pgxpool.New(context.Background(), os.Getenv("DATABASE_URL"))
+	dbpool, err := pgxpool.New(context.Background(), os.Getenv("PG_FROM_DB_URL"))
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "Unable to create connection pool: %v\n", err)
 		os.Exit(1)

scripts/fixtures/create_users_fixture.go

@@ -0,0 +1,261 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"math"
+	"math/rand"
+	"os"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+	"github.com/joho/godotenv"
+)
+
+var (
+	firstNames = []string{
+		"Juan", "María", "Carlos", "Ana", "Miguel", "Rosa", "Pedro", "Isabel",
+		"Luis", "Carmen", "José", "Antonia", "Fernando", "Dolores", "Diego", "Margarita",
+		"Alejandro", "Francisca", "Antonio", "Juana", "Francisco", "Pilar", "Andrés", "Elena",
+		"Rafael", "Teresa", "Enrique", "Ángeles", "Jorge", "Soledad", "Ramón", "Asunción",
+	}
+	lastNames = []string{
+		"García", "Rodríguez", "González", "López", "Martínez", "Sánchez", "Peña", "Castellanos",
+		"Moreno", "Jiménez", "Hernández", "Díaz", "Ramírez", "Cruz", "Velasco", "Campos",
+		"Medina", "Ruiz", "Domínguez", "Delgado", "Flores", "Silver", "Torres", "Rivera",
+		"Vargas", "Castro", "Vega", "Rojas", "Parra", "Salazar", "Guzmán", "Ochoa",
+	}
+	domainNames = []string{
+		"gmail.com", "yahoo.com", "hotmail.com", "outlook.com", "empresa.com",
+		"mail.com", "correo.es", "example.com", "test.io", "domain.dev",
+	}
+)
+
+func init() {
+	rand.Seed(time.Now().UnixNano())
+}
+
+func randomFirstName() string {
+	return firstNames[rand.Intn(len(firstNames))]
+}
+
+func randomLastName() string {
+	return lastNames[rand.Intn(len(lastNames))]
+}
+
+func randomEmail() string {
+	firstName := randomFirstName()
+	lastName := randomLastName()
+	domain := domainNames[rand.Intn(len(domainNames))]
+	return fmt.Sprintf("%s.%s@%s", firstName, lastName, domain)
+}
+
+func randomAge() int {
+	return rand.Intn(70) + 18
+}
+
+func randomSalary() float64 {
+	return math.Round((rand.Float64()*100000 + 25000)) / 100
+}
+
+func randomBirthDate() time.Time {
+	years := rand.Intn(70) + 18
+	days := rand.Intn(365)
+	return time.Now().AddDate(-years, 0, -days)
+}
+
+func randomPhoneNumber() string {
+	return fmt.Sprintf("+34 6%d %d%d%d%d%d%d%d",
+		rand.Intn(10),
+		rand.Intn(10), rand.Intn(10), rand.Intn(10), rand.Intn(10),
+		rand.Intn(10), rand.Intn(10), rand.Intn(10),
+	)
+}
+
+func randomCity() string {
+	cities := []string{
+		"Madrid", "Barcelona", "Valencia", "Sevilla", "Bilbao",
+		"Zaragoza", "Málaga", "Murcia", "Palma", "Las Palmas",
+		"Córdoba", "Valladolid", "Vigo", "Gijón", "Hospitalet",
+	}
+	return cities[rand.Intn(len(cities))]
+}
+
+func randomHobbies() []string {
+	allHobbies := []string{
+		"lectura", "viajes", "cine", "música", "deportes",
+		"cocina", "fotografía", "gaming", "yoga", "senderismo",
+		"natación", "tenis", "ajedrez", "pintura", "jardinería",
+	}
+
+	numHobbies := rand.Intn(4) + 1
+	selected := make([]string, 0, numHobbies)
+	used := make(map[int]bool)
+
+	for len(selected) < numHobbies {
+		idx := rand.Intn(len(allHobbies))
+		if !used[idx] {
+			used[idx] = true
+			selected = append(selected, allHobbies[idx])
+		}
+	}
+	return selected
+}
+
+func createUsersTable(db *pgxpool.Pool, ctx context.Context) error {
+	createTableSQL := `
+	CREATE TABLE IF NOT EXISTS users (
+		id SERIAL PRIMARY KEY,
+		first_name VARCHAR(100) NOT NULL,
+		last_name VARCHAR(100) NOT NULL,
+		email VARCHAR(255) UNIQUE NOT NULL,
+		age INTEGER NOT NULL CHECK (age >= 18),
+		birth_date DATE NOT NULL,
+		salary NUMERIC(12, 2),
+		phone_number VARCHAR(20),
+		is_active BOOLEAN DEFAULT true,
+		is_verified BOOLEAN DEFAULT false,
+		city VARCHAR(100),
+		hobbies TEXT[],
+		created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+		updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+		metadata JSONB
+	);
+	`
+
+	_, err := db.Exec(ctx, createTableSQL)
+	if err != nil {
+		return fmt.Errorf("error creating users table: %w", err)
+	}
+
+	return nil
+}
+
+func truncateUsersTable(db *pgxpool.Pool, ctx context.Context) error {
+	truncateSQL := `TRUNCATE TABLE users RESTART IDENTITY CASCADE;`
+	_, err := db.Exec(ctx, truncateSQL)
+	if err != nil {
+		return fmt.Errorf("error truncating users table: %w", err)
+	}
+	return nil
+}
+
+func insertUserRecord(db *pgxpool.Pool, ctx context.Context, userNum int) error {
+	firstName := randomFirstName()
+	lastName := randomLastName()
+	email := randomEmail()
+	age := randomAge()
+	birthDate := randomBirthDate()
+	salary := randomSalary()
+	phoneNumber := randomPhoneNumber()
+	isActive := rand.Intn(2) == 1
+	isVerified := rand.Intn(2) == 1
+	city := randomCity()
+	hobbies := randomHobbies()
+
+	metadata := fmt.Sprintf(
+		`{"user_number": %d, "registration_source": "%s", "tags": [%d, %d, %d]}`,
+		userNum,
+		[]string{"web", "mobile", "api"}[rand.Intn(3)],
+		rand.Intn(100),
+		rand.Intn(100),
+		rand.Intn(100),
+	)
+
+	insertSQL := `
+	INSERT INTO users (
+		first_name, last_name, email, age, birth_date, salary, 
+		phone_number, is_active, is_verified, city, hobbies, metadata
+	) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12)
+	ON CONFLICT (email) DO NOTHING;
+	`
+
+	_, err := db.Exec(
+		ctx,
+		insertSQL,
+		firstName,
+		lastName,
+		email,
+		age,
+		birthDate,
+		salary,
+		phoneNumber,
+		isActive,
+		isVerified,
+		city,
+		hobbies,
+		metadata,
+	)
+
+	if err != nil {
+		return fmt.Errorf("error inserting user %d: %w", userNum, err)
+	}
+
+	return nil
+}
+
+func main() {
+	err := godotenv.Load()
+	if err != nil {
+		log.Println("Warning: could not load .env file")
+	}
+
+	dbURL := os.Getenv("PG_FROM_DB_URL")
+	if dbURL == "" {
+		log.Fatal("PG_FROM_DB_URL environment variable not set")
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
+	defer cancel()
+
+	db, err := pgxpool.New(ctx, dbURL)
+	if err != nil {
+		log.Fatalf("Unable to create connection pool: %v", err)
+	}
+	defer db.Close()
+
+	err = db.Ping(ctx)
+	if err != nil {
+		log.Fatalf("Unable to ping database: %v", err)
+	}
+	fmt.Println("✓ Connected to database successfully")
+
+	fmt.Println("Creating users table...")
+	err = createUsersTable(db, ctx)
+	if err != nil {
+		log.Fatalf("Failed to create table: %v", err)
+	}
+	fmt.Println("✓ Users table created/already exists")
+
+	fmt.Println("Clearing existing data...")
+	err = truncateUsersTable(db, ctx)
+	if err != nil {
+		log.Fatalf("Failed to truncate table: %v", err)
+	}
+	fmt.Println("✓ Table cleared")
+
+	fmt.Println("Inserting 1000 user records...")
+	for i := 1; i <= 1000; i++ {
+		err := insertUserRecord(db, ctx, i)
+		if err != nil {
+			log.Printf("Warning: failed to insert user %d: %v", i, err)
+		}
+
+		if i%100 == 0 {
+			fmt.Printf("  Progress: %d/1000 records inserted\n", i)
+		}
+	}
+
+	fmt.Println("✓ All 1000 user records inserted successfully")
+
+	var count int
+	err = db.QueryRow(ctx, "SELECT COUNT(*) FROM users;").Scan(&count)
+	if err != nil {
+		log.Printf("Warning: could not verify record count: %v", err)
+	} else {
+		fmt.Printf("✓ Final user count: %d\n", count)
+	}
+
+	fmt.Println("\n✅ Fixture creation completed successfully!")
+}