using MAF1.Agents.FileCity;
using MAF1.Agents.Weather;
using MAF1.Orchestration;
using MAF1.Tools;
using MAF1.Utils;
using MAF1.Workflows;
using Microsoft.Agents.AI;
using Microsoft.Agents.AI.Workflows;
using Microsoft.Extensions.Configuration;

namespace MAF1;

internal static class CliHost
{
    public static async Task RunAsync(string[] args)
    {
        IConfiguration config = new ConfigurationBuilder()
            .SetBasePath(AppContext.BaseDirectory)
            .AddJsonFile("appsettings.json", optional: false, reloadOnChange: false)
            .AddEnvironmentVariables()
            .Build();

        AgentFactory factory = new(AgentFactory.Load(config));
        WeatherOptions weatherOptions = config.GetSection("Weather").Get<WeatherOptions>() ?? new WeatherOptions();
        using HttpClient http = WeatherTools.CreateHttpClient();
        WeatherTools weatherTools = new(weatherOptions, http);
        AIAgent fileCityAgent = FileCityAgent.Create(factory);
        AIAgent weatherAgent = WeatherAgent.Create(factory, weatherTools);

        if (!TryParseArgs(args, out string mode, out string filePath))
        {
            PrintUsage();
            return;
        }

        Console.WriteLine($"天气数据源: {weatherOptions.Provider}");
        Console.WriteLine($"目标文件: {filePath}");
        Console.WriteLine();

        Workflow workflow = mode == "edge"
            ? CityWeatherWorkflow.BuildEdgeCondition(fileCityAgent, weatherAgent)
            : CityWeatherWorkflow.BuildNodeCondition(fileCityAgent, weatherAgent);
        string label = mode == "edge"
            ? "模式 edge：判断写在边上"
            : "模式 node：判断写在节点里";
        await WorkflowOrchestration.RunAsync(workflow, label, filePath);
    }

    private static bool TryParseArgs(string[] args, out string mode, out string filePath)
    {
        mode = "node";
        filePath = Path.Combine("Data", "cities.txt");
        IEnumerable<string> rest = args[0] is "--cli" ? args.Skip(1) : args;
        string[] list = rest.ToArray();
        if (list.Length == 0)
        {
            return true;
        }

        string first = list[0];
        if (first is "node" or "edge")
        {
            mode = first;
            if (list.Length > 1)
            {
                filePath = list[1];
            }

            return true;
        }

        if (first is "-h" or "--help")
        {
            return false;
        }

        filePath = first;
        return true;
    }

    private static void PrintUsage()
    {
        Console.WriteLine(
            """
            可视化编排（默认）:
              dotnet run

            命令行工作流对比:
              dotnet run -- node Data/cities.txt
              dotnet run -- edge Data/cities.txt
            """);
    }
}