// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
using AzureMcp.Core.Commands;
using AzureMcp.Core.Services.Telemetry;
using AzureMcp.Postgres.Options;
using AzureMcp.Postgres.Options.Server;
using AzureMcp.Postgres.Services;
using Microsoft.Extensions.Logging;
namespace AzureMcp.Postgres.Commands.Server;
public sealed class ServerParamSetCommand(ILogger<ServerParamSetCommand> logger) : BaseServerCommand<ServerParamSetOptions>(logger)
{
private const string CommandTitle = "Set PostgreSQL Server Parameter";
private readonly Option<string> _paramOption = PostgresOptionDefinitions.Param;
private readonly Option<string> _valueOption = PostgresOptionDefinitions.Value;
public override string Name => "set";
public override string Description =>
"Sets a specific parameter of a PostgreSQL server to a certain value.";
public override string Title => CommandTitle;
public override ToolMetadata Metadata => new() { Destructive = true, ReadOnly = false };
protected override void RegisterOptions(Command command)
{
base.RegisterOptions(command);
command.AddOption(_paramOption);
command.AddOption(_valueOption);
}
protected override ServerParamSetOptions BindOptions(ParseResult parseResult)
{
var options = base.BindOptions(parseResult);
options.Param = parseResult.GetValueForOption(_paramOption);
options.Value = parseResult.GetValueForOption(_valueOption);
return options;
}
public override async Task<CommandResponse> ExecuteAsync(CommandContext context, ParseResult parseResult)
{
try
{
var options = BindOptions(parseResult);
if (!Validate(parseResult.CommandResult, context.Response).IsValid)
{
return context.Response;
}
IPostgresService pgService = context.GetService<IPostgresService>() ?? throw new InvalidOperationException("PostgreSQL service is not available.");
var result = await pgService.SetServerParameterAsync(options.Subscription!, options.ResourceGroup!, options.User!, options.Server!, options.Param!, options.Value!);
context.Response.Results = !string.IsNullOrEmpty(result) ?
ResponseResult.Create(
new ServerParamSetCommandResult(result, options.Param!, options.Value!),
PostgresJsonContext.Default.ServerParamSetCommandResult) :
null;
}
catch (Exception ex)
{
_logger.LogError(ex, "An exception occurred setting the parameter.");
HandleException(context, ex);
}
return context.Response;
}
internal record ServerParamSetCommandResult(string Message, string Parameter, string Value);
}
