using System.Collections.Generic;
using System.Threading.Tasks;

namespace Sozsoft.SqlQueryManager.Domain.Services;

/// <summary>
/// Result of SQL query execution
/// </summary>
public class SqlExecutionResult
{
    public bool Success { get; set; }
    public string Message { get; set; }
    public IEnumerable<dynamic> Data { get; set; }
    public int RowsAffected { get; set; }
    public long ExecutionTimeMs { get; set; }
    public Dictionary<string, object> Metadata { get; set; }

    public SqlExecutionResult()
    {
        Metadata = new Dictionary<string, object>();
    }
}

/// <summary>
/// Service for executing T-SQL commands against configured data sources.
/// </summary>
public interface ISqlExecutorService
{
    /// <summary>Execute a SELECT query and return results.</summary>
    Task<SqlExecutionResult> ExecuteQueryAsync(
        string sql,
        string dataSourceCode,
        Dictionary<string, object> parameters = null);

    /// <summary>Execute a non-query command (INSERT, UPDATE, DELETE, DDL).</summary>
    Task<SqlExecutionResult> ExecuteNonQueryAsync(
        string sql,
        string dataSourceCode,
        Dictionary<string, object> parameters = null);

    /// <summary>Execute scalar query (returns single value).</summary>
    Task<SqlExecutionResult> ExecuteScalarAsync<T>(
        string sql,
        string dataSourceCode,
        Dictionary<string, object> parameters = null);

    /// <summary>Validate SQL syntax (basic validation).</summary>
    Task<(bool IsValid, string ErrorMessage)> ValidateSqlAsync(string sql);
}