using Dapper;
using JdeScoping.DataAccess.Interfaces;
using JdeScoping.DataSync.Etl.Contracts;

namespace JdeScoping.DataSync.Etl.Scripts;

/// <summary>
/// SQL script runner that executes SQL commands against the database.
/// </summary>
public class SqlScriptRunner : IScriptRunner
{
    private readonly IDbConnectionFactory _connectionFactory;
    private readonly string _sql;
    private readonly object? _parameters;
    private readonly int _timeoutSeconds;

    /// <summary>
    /// The name of this script.
    /// </summary>
    public string ScriptName { get; }

    /// <summary>
    /// Initializes a new instance of the <see cref="SqlScriptRunner"/> class.
    /// </summary>
    /// <param name="connectionFactory">The database connection factory.</param>
    /// <param name="sql">The SQL command to execute.</param>
    /// <param name="name">The optional name of the script.</param>
    /// <param name="parameters">The optional parameters for the SQL command.</param>
    /// <param name="timeoutSeconds">The command timeout in seconds.</param>
    public SqlScriptRunner(
        IDbConnectionFactory connectionFactory,
        string sql,
        string? name = null,
        object? parameters = null,
        int timeoutSeconds = 3600)
    {
        ArgumentNullException.ThrowIfNull(connectionFactory);
        ArgumentException.ThrowIfNullOrWhiteSpace(sql);

        _connectionFactory = connectionFactory;
        _sql = sql;
        _parameters = parameters;
        _timeoutSeconds = timeoutSeconds;
        ScriptName = name ?? "SqlScript";
    }

    /// <summary>
    /// Executes the SQL script asynchronously.
    /// </summary>
    /// <param name="cancellationToken">The cancellation token.</param>
    public async Task ExecuteAsync(CancellationToken cancellationToken = default)
    {
        await using var connection = await _connectionFactory.CreateLotFinderConnectionAsync(cancellationToken);
        await connection.ExecuteAsync(
            new CommandDefinition(
                _sql,
                _parameters,
                commandTimeout: _timeoutSeconds,
                cancellationToken: cancellationToken));
    }
}