package main

import (
	"database/sql"
	"fmt"
	"log"
	"os"

	"github.com/joho/godotenv"
	_ "github.com/lib/pq"
)

func main() {
	godotenv.Load(".env")
	dbURL := os.Getenv("DATABASE_URL")
	if dbURL == "" {
		// Fallback
		host := os.Getenv("DB_HOST")
		port := os.Getenv("DB_PORT")
		user := os.Getenv("DB_USER")
		pass := os.Getenv("DB_PASSWORD")
		name := os.Getenv("DB_NAME")
		ssl := os.Getenv("DB_SSLMODE")
		if host != "" {
			dbURL = fmt.Sprintf("postgres://%s:%s@%s:%s/%s?sslmode=%s", user, pass, host, port, name, ssl)
		} else {
			log.Fatal("DB URL not found")
		}
	}

	db, err := sql.Open("postgres", dbURL)
	if err != nil {
		log.Fatal(err)
	}
	defer db.Close()

	rows, err := db.Query(`
        SELECT column_name, data_type 
        FROM information_schema.columns 
        WHERE table_name = 'users';
    `)
	if err != nil {
		log.Fatal(err)
	}
	defer rows.Close()

	fmt.Println("USERS TABLE SCHEMA:")
	for rows.Next() {
		var colName, dataType string
		rows.Scan(&colName, &dataType)
		fmt.Printf("%s: %s\n", colName, dataType)
	}
}