//go:build ignore

package main

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

	_ "github.com/lib/pq"
)

func main() {
	// DSN matches the one in connect.go and .env
	// Built from the environment, not hardcoded. This line used to carry the
	// production host and password in plaintext, in a file tracked by git — so
	// the live database credential shipped with every clone. Export DB_HOST,
	// DB_USER, DB_PASSWORD, DB_NAME and DB_PORT (or source .env) before running.
	dsn := fmt.Sprintf(
		"host=%s user=%s password=%s dbname=%s port=%s sslmode=disable",
		os.Getenv("DB_HOST"), os.Getenv("DB_USER"), os.Getenv("DB_PASSWORD"),
		os.Getenv("DB_NAME"), os.Getenv("DB_PORT"),
	)
	db, err := sql.Open("postgres", dsn)
	if err != nil {
		log.Fatalf("Failed to open DB: %v", err)
	}
	defer db.Close()

	if err := db.Ping(); err != nil {
		log.Fatalf("Failed to ping DB: %v", err)
	}

	fmt.Println("--- Listing Tables in logistics Database ---")
	rows, err := db.Query(`
		SELECT table_name 
		FROM information_schema.tables 
		WHERE table_schema = 'public' 
		ORDER BY table_name;
	`)
	if err != nil {
		log.Fatalf("Failed to query tables: %v", err)
	}
	defer rows.Close()

	for rows.Next() {
		var name string
		if err := rows.Scan(&name); err != nil {
			log.Fatalf("Scan failed: %v", err)
		}
		fmt.Printf("Table: %s\n", name)
	}
}