using InnovEnergy.App.Backend.S3;
using InnovEnergy.Lib.Utils;

namespace S3Explorer;

public static class Program
{

    public static async Task<Int32> Main(String[] args)
    {
        if (args.Contains("-s"))
        {
            await SnakeGameSs.PlaySnake();
        }
        
        if (args.Length < 4 || args.Contains("-h"))
        {
            Console.WriteLine("To use: $S3Explorer [BucketId] [from:Unix-time] [to:Unix-time] [#Data-points]");
            Console.WriteLine("-h shows this message");
            Console.WriteLine("-s 🐍");
            return 0;
        }

        
        Console.WriteLine("");
        
        var bucketName = args[0] + "-3e5b3069-214a-43ee-8d85-57d72000c19d";
        var fromTime = Int64.Parse(args[1]);
        var toTime = Int64.Parse(args[2]);
        var numberOfDataPoints = Int64.Parse(args[3]);

        var time = toTime - fromTime;
        var timeBetweenDataPoints = time / numberOfDataPoints;
        timeBetweenDataPoints = Math.Max(timeBetweenDataPoints, 2);
        
        // var fileList = ListAllFileNamesInBucket(bucketName);
        var timestampList = new List<String> { };

        for (var i = fromTime; i <= toTime; i += timeBetweenDataPoints)
        {
            timestampList.Add((i/2 *2).ToString());
        }
        await GrabFiles(bucketName,timestampList);
        
        return 0;
    }

    private static async Task GrabFiles(String bucketName, List<String> timestampList)
    {
        var last = timestampList.Last();
        var fileCsv = await S3Access.Admin.GetFileText(bucketName, last + ".csv");
        var dataKeys = fileCsv
            .Select(l => l.Split(";"))
            .Select(l => l[0])
            .Prepend("Timestamp")
            .JoinWith(";")
            .WriteLine();
        
        foreach (var timestamp in timestampList)
        {

            fileCsv = await S3Access.Admin.GetFileText(bucketName,timestamp + ".csv");

            fileCsv.Select(l => l.Split(";"))
                   .Select(l => l[1])
                   .Prepend(timestamp)
                   .JoinWith(";")
                   .WriteLine();
            
            // Parse csv, build csv
        }
    }

    private static List<String> ListAllFileNamesInBucket(String bucketName)
    {
        // Todo refactor S3Access into Lib
        return S3Access.Admin.ListFilesInBucket(bucketName).Result.Split(',').ToList();
    }
}