using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.IO;

public class SevenZipUtility
{
    static string m_SevenZipToolPath = string.Empty;
    static string sevenZipToolPath {
        get {
            if (string.IsNullOrEmpty(m_SevenZipToolPath))
            {
                if (Directory.Exists("C:/Program Files/7-Zip"))
                {
                    m_SevenZipToolPath = "C:/Program Files/7-Zip";
                }
                else
                {
                    m_SevenZipToolPath = "C:/Program Files (x86)/7-Zip";
                }
            }

            return m_SevenZipToolPath;
        }
    }

    public static void Compress(string from, string to)
    {
        if (File.Exists(to))
        {
            File.Delete(to);
        }

        var cmd = string.Format("\"{0}\\7z\" a {1} {2} -mx9", sevenZipToolPath, to, from);
        SystemCMD.RunCmd(cmd);
    }

    public static CompressProgress CompressStreamingAssets()
    {
        var files = new List<FileInfo>();
        FileExtersion.GetAllDirectoryFileInfos(Application.streamingAssetsPath, files);

        var progress = new CompressProgress();
        progress.total = files.Count;

        foreach (var item in files)
        {
            var fullName = item.FullName;
            var extension = Path.GetExtension(item.FullName);
            if (extension == ".meta")
            {
                continue;
            }

            var to = string.Empty;
            if (string.IsNullOrEmpty(extension))
            {
                to = fullName + ".7z";
            }
            else
            {
                to = fullName.Replace(extension, ".7z");
            }

            Compress(fullName, to);
            progress.complete++;
        }

        return progress;
    }

    public class CompressProgress
    {
        public int total;
        public int complete;
        public float progress {
            get {
                return complete / (float)total;
            }
        }

        public bool done {
            get {
                return complete >= total;
            }
        }
    }

}