// 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.Database;
using AzureMcp.Postgres.Services;
using Microsoft.Extensions.Logging;
namespace AzureMcp.Postgres.Commands.Database;
public sealed class DatabaseQueryCommand(ILogger<DatabaseQueryCommand> logger) : BaseDatabaseCommand<DatabaseQueryOptions>(logger)
{
private const string CommandTitle = "Query PostgreSQL Database";
private readonly Option<string> _queryOption = PostgresOptionDefinitions.Query;
public override string Name => "query";
public override string Description => "Executes a query on the PostgreSQL database.";
public override string Title => CommandTitle;
public override ToolMetadata Metadata => new() { Destructive = false, ReadOnly = true };
protected override void RegisterOptions(Command command)
{
base.RegisterOptions(command);
command.AddOption(_queryOption);
}
protected override DatabaseQueryOptions BindOptions(ParseResult parseResult)
{
var options = base.BindOptions(parseResult);
options.Query = parseResult.GetValueForOption(_queryOption);
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.");
List<string> queryResult = await pgService.ExecuteQueryAsync(options.Subscription!, options.ResourceGroup!, options.User!, options.Server!, options.Database!, options.Query!);
context.Response.Results = queryResult?.Count > 0 ?
ResponseResult.Create(
new DatabaseQueryCommandResult(queryResult),
PostgresJsonContext.Default.DatabaseQueryCommandResult) :
null;
}
catch (Exception ex)
{
_logger.LogError(ex, "An exception occurred while executing the query.");
HandleException(context, ex);
}
return context.Response;
}
internal record DatabaseQueryCommandResult(List<string> QueryResult);
}
