package database

import (
	"testing"

	_ "github.com/go-sql-driver/mysql"
)

func TestNewMySQL(t *testing.T) {
	// Skip this test if no MySQL test database is available
	t.Skip("Skipping MySQL test - requires MySQL test database")
	
	// Example test for when MySQL is available:
	// db, err := NewMySQL("test_user:test_pass@tcp(localhost:3306)/test_db")
	// if err != nil {
	// 	t.Fatalf("Failed to create MySQL database: %v", err)
	// }
	// defer db.Close()
	// 
	// // Test database type
	// if db.GetType() != MySQL {
	// 	t.Errorf("Expected MySQL database type, got %v", db.GetType())
	// }
}

func TestConfigValidation(t *testing.T) {
	tests := []struct {
		name    string
		config  Config
		wantErr bool
	}{
		{
			name: "valid_mysql_config",
			config: Config{
				DSN: "user:password@tcp(localhost:3306)/database",
			},
			wantErr: false, // Will fail without actual MySQL, but config is valid
		},
		{
			name: "empty_dsn",
			config: Config{
				DSN: "",
			},
			wantErr: true,
		},
	}
	
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			db, _ := New(tt.config)
			// We expect connection errors since we don't have a test MySQL
			// but we can test that the configuration is handled properly
			if db != nil {
				db.Close()
			}
			// For now, just ensure no panics occur
		})
	}
}

func TestDatabaseTypeMethods(t *testing.T) {
	// Test with mock config (will fail to connect but won't panic)
	config := Config{
		DSN: "test:test@tcp(localhost:3306)/test",
	}
	
	db, err := New(config)
	if err != nil {
		// Expected - no actual MySQL server
		t.Logf("Expected connection error: %v", err)
		return
	}
	defer db.Close()
	
	if db.GetType() != MySQL {
		t.Errorf("Expected MySQL type, got %v", db.GetType())
	}
}

func TestDatabaseMethods(t *testing.T) {
	// Skip actual database tests without MySQL
	t.Skip("Skipping database method tests - requires MySQL test database")
	
	// Example tests for when MySQL is available:
	// db, err := NewMySQL("test_user:test_pass@tcp(localhost:3306)/test_db")
	// if err != nil {
	// 	t.Fatalf("Failed to create database: %v", err)
	// }
	// defer db.Close()
	//
	// // Test basic operations
	// _, err = db.Exec("CREATE TEMPORARY TABLE test (id INT PRIMARY KEY, name VARCHAR(255))")
	// if err != nil {
	// 	t.Fatalf("Failed to create test table: %v", err)
	// }
	//
	// // Test insert
	// result, err := db.Exec("INSERT INTO test (id, name) VALUES (?, ?)", 1, "test_value")
	// if err != nil {
	// 	t.Fatalf("Failed to insert test data: %v", err)
	// }
	//
	// // Test query
	// rows, err := db.Query("SELECT name FROM test WHERE id = ?", 1)
	// if err != nil {
	// 	t.Fatalf("Failed to query test data: %v", err)
	// }
	// defer rows.Close()
	//
	// if !rows.Next() {
	// 	t.Fatal("No rows returned from query")
	// }
	//
	// var name string
	// if err := rows.Scan(&name); err != nil {
	// 	t.Fatalf("Failed to scan result: %v", err)
	// }
	//
	// if name != "test_value" {
	// 	t.Errorf("Expected 'test_value', got '%s'", name)
	// }
}