using Abp.Logging;

using SixLabors.ImageSharp;

using VberZero.Tools.StringModel;

namespace VberZero.Tools.FileHelpers;

public static class FileUpload
{
    private static string GetFileExt(string fileName)
    {
        string fileExt = fileName.Substring(fileName.LastIndexOf(".", StringComparison.Ordinal) + 1, fileName.Length - fileName.LastIndexOf(".", StringComparison.Ordinal) - 1);
        return fileExt.ToLower();
    }

    public static string Base64ToFile(this string base64Str, string fileNamePath, IWebHostEnvironment env = null, bool webRoot = true)
    {
        string lcRetVal = "error@";
        try
        {
            string path = $"{(env == null ? AppDomain.CurrentDomain.BaseDirectory : webRoot ? env.WebRootPath : env.ContentRootPath)}{fileNamePath}";
            SaveBase64File(base64Str, path);
            lcRetVal = fileNamePath;
        }
        catch (Exception e)
        {
            LogHelper.LogException(e);
            lcRetVal += "文件上传异常。";
        }

        return lcRetVal;
    }

    public static string Base64ToPng(this string base64String, string fileNamePath, IWebHostEnvironment env = null, bool webRoot = true)
    {
        string lcRetVal = "error@";
        try
        {
            string path = $"{(env == null ? AppDomain.CurrentDomain.BaseDirectory : webRoot ? env.WebRootPath : env.ContentRootPath)}{fileNamePath}";
            SaveBase64Png(base64String, path);
            lcRetVal = fileNamePath;
        }
        catch (Exception e)
        {
            LogHelper.LogException(e);
            lcRetVal += "文件上传异常。";
        }

        return lcRetVal;
    }

    public static string Base64ToFile(this string base64Str, string fileName, string filePath, string fileExt, IWebHostEnvironment env = null, bool webRoot = true)
    {
        fileName = $"{fileName}.{fileExt}";
        string lcRetVal = Base64ToFile(base64Str, fileName, filePath, env, webRoot);
        return lcRetVal;
    }

    public static string Base64ToFile(this string base64Str, string fileName, string filePath, IWebHostEnvironment env = null, bool webRoot = true)
    {
        string lcRetVal = "error@";
        try
        {
            filePath = filePath.Sw("\\");
            filePath = filePath.Ew("\\");
            string path = $"{(env == null ? AppDomain.CurrentDomain.BaseDirectory : webRoot ? env.WebRootPath : env.ContentRootPath)}{filePath}";
            if (!Directory.Exists(path))
                Directory.CreateDirectory(path);
            SaveBase64File(base64Str, path, fileName);
            lcRetVal = filePath + fileName;
        }
        catch (Exception e)
        {
            LogHelper.LogException(e);
            lcRetVal += "文件上传异常。";
        }

        return lcRetVal;
    }

    public static string Base64ToPng(this string base64String, string fileName, string filePath, IWebHostEnvironment env = null, bool webRoot = true)
    {
        string lcRetVal = "error@";
        try
        {
            fileName = $"{fileName}-{DateTime.Now:yyMMddHHmmss}{new Random().Next(1000, 9999)}.png";
            filePath = filePath.Sw("\\");
            filePath = filePath.Ew("\\");

            string path = $"{(env == null ? AppDomain.CurrentDomain.BaseDirectory : webRoot ? env.WebRootPath : env.ContentRootPath)}{filePath}";
            SaveBase64Png(base64String, path, fileName);
            lcRetVal = filePath + fileName;
        }
        catch (Exception e)
        {
            LogHelper.LogException(e);
            lcRetVal += "文件上传异常。";
        }

        return lcRetVal;
    }

    public static void SaveBase64File(this string base64String, string fileNamePath)
    {
        if (fileNamePath == null)
        {
            return;
        }
        var filePath = fileNamePath.Substring(0, fileNamePath.LastIndexOf('\\'));
        if (!Directory.Exists(filePath))
            Directory.CreateDirectory(filePath);
        byte[] bytes = Convert.FromBase64String(base64String);
        using FileStream fs = new FileStream(fileNamePath, FileMode.Create, FileAccess.Write);
        fs.Write(bytes, 0, bytes.Length);
        fs.Close();
    }

    public static void SaveBase64Png(this string base64String, string fileNamePath)
    {
        if (fileNamePath == null)
        {
            return;
        }
        var filePath = fileNamePath.Substring(0, fileNamePath.LastIndexOf('\\'));
        if (!Directory.Exists(filePath))
            Directory.CreateDirectory(filePath);
        base64String = base64String.StartsWith("data") ? base64String.Split(',')[1] : base64String;
        byte[] bytes = Convert.FromBase64String(base64String);
        //using MemoryStream ms = new MemoryStream(bytes);
        var img = Image.Load(bytes);
        img.SaveAsPng(fileNamePath);
    }

    public static void SaveBase64File(this string base64String, string fileNamePath, string fileName)
    {
        if (fileNamePath == null)
        {
            return;
        }
        if (!Directory.Exists(fileNamePath))
            Directory.CreateDirectory(fileNamePath);
        byte[] bytes = Convert.FromBase64String(base64String);
        using FileStream fs = new FileStream(Path.Combine(fileNamePath, fileName), FileMode.Create, FileAccess.Write);
        fs.Write(bytes, 0, bytes.Length);
        fs.Close();
    }

    public static void SaveBase64Png(this string base64String, string fileNamePath, string fileName)
    {
        if (fileNamePath == null)
        {
            return;
        }
        if (!Directory.Exists(fileNamePath))
            Directory.CreateDirectory(fileNamePath);
        base64String = base64String.StartsWith("data") ? base64String.Split(',')[1] : base64String;
        byte[] bytes = Convert.FromBase64String(base64String);
        //using MemoryStream ms = new MemoryStream(bytes);
        var img = Image.Load(bytes);
        img.SaveAsPng(Path.Combine(fileNamePath, fileName));
    }

    public static void DeleteFile(this string fileNamePath, IWebHostEnvironment env = null, bool webRoot = true)
    {
        try
        {
            fileNamePath = fileNamePath.Sw("\\");
            string path = $"{(env == null ? AppDomain.CurrentDomain.BaseDirectory : webRoot ? env.WebRootPath : env.ContentRootPath)}{fileNamePath}";
            if (File.Exists(path))
                File.Delete(path);
        }
        catch
        {
            //
        }
    }
}