using System;
using System.CommandLine;
using System.CommandLine.Invocation;
using System.Threading.Tasks;
using MfGames.ToolBuilder;
using MfGames.ToolBuilder.Config;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;

namespace SampleTool.Commands;

public class ConfigCommand : Command, ICommandHandler, ITopCommand
{
    private readonly ILogger<ConfigCommand> logger;

    private readonly ConfigToolService service;

    private readonly Option<string> setOption;

    /// <inheritdoc />
    public ConfigCommand(ILoggerFactory loggerFactory, ConfigToolService service)
        : base("config", "Sets and displays the configuration settings")
    {
        this.logger = loggerFactory.CreateLogger<ConfigCommand>();
        this.service = service;
        this.Handler = this;

        this.setOption = new Option<string>("--set", "Sets the text value in the setting");

        this.AddOption(this.setOption);
    }

    /// <inheritdoc />
    public int Invoke(InvocationContext context)
    {
        return this.InvokeAsync(context).Result;
    }

    /// <inheritdoc />
    public Task<int> InvokeAsync(InvocationContext context)
    {
        // Get the settings and report that it was being created.
        ConfigCommandSettings settings =
            this.service.ReadDefaultConfigFile<ConfigCommandSettings>();

        if (settings == null)
        {
            this.logger.LogInformation("Creating configuration file");
            settings = new ConfigCommandSettings();
        }

        // If we have a set command, then provide it.
        string value = context.ParseResult.GetValueForOption(this.setOption);

        if (value != null)
        {
            settings.Value = value;
        }

        // Increment the counter.
        settings.TimesRead++;

        // Report the values.
        Console.WriteLine(JsonConvert.SerializeObject(settings, Formatting.Indented));

        // Write out the settings.
        this.service.WriteDefaultConfigFile(settings);

        return Task.FromResult(0);
    }

    private class ConfigCommandSettings
    {
        public int TimesRead { get; set; }

        public string Value { get; set; }
    }
}