using CommandLine;
using StackExchange.Redis;
using System;
using RedisManager.Utils;

namespace RedisManager.Commands
{
    /// <summary>
    /// Command line options for the status command.
    /// Used to check the connectivity and response time of a Redis instance.
    /// </summary>
    [Verb("status", HelpText = "Check status of a Redis instance.")]
    public class StatusOptions
    {
        /// <summary>
        /// Gets or sets the name of the Redis instance to check.
        /// This must match a configured instance name in the configuration file.
        /// </summary>
        [Option('i', "instance", Required = true, HelpText = "Instance name.")]
        public string Instance { get; set; }
    }

    /// <summary>
    /// Static class containing the implementation for the status command.
    /// Provides functionality to check Redis instance connectivity and response time.
    /// </summary>
    public static class StatusCommand
    {
        /// <summary>
        /// Executes the status command to check Redis instance connectivity.
        /// Connects to the specified Redis instance and measures the ping response time.
        /// </summary>
        /// <param name="opts">The status command options containing the instance name</param>
        /// <param name="config">The RedisManager configuration containing instance details</param>
        /// <returns>Exit code (0 for success, non-zero for failure)</returns>
        public static int RunStatus(StatusOptions opts, Config config)
        {
            var instance = RedisUtils.GetInstance(config, opts.Instance);
            using var redis = RedisUtils.ConnectRedis(instance);
            var db = redis.GetDatabase();
            var pong = db.Ping();
            Console.WriteLine(Output.Green($"PONG: {pong.TotalMilliseconds}ms"));
            return 0;
        }
    }
}