using System;
using System.IO;
using AccountManagement.Domain.TaskAgg;
using Company.Domain.AndroidApkVersionAgg;
using CompanyManagment.App.Contracts.AndroidApkVersion;
using CompanyManagment.Application.Helpers;
using Microsoft.AspNetCore.Http;
using Microsoft.EntityFrameworkCore;
using System.Threading.Tasks;
using _0_Framework.Application;

namespace CompanyManagment.Application;

public class AndroidApkVersionApplication : IAndroidApkVersionApplication
{
    private readonly IAndroidApkVersionRepository _androidApkVersionRepository;
    private readonly ITaskRepository _taskRepository;

    public AndroidApkVersionApplication(IAndroidApkVersionRepository androidApkVersionRepository, ITaskRepository taskRepository)
    {
        _androidApkVersionRepository = androidApkVersionRepository;
        _taskRepository = taskRepository;
    }

    public async Task<OperationResult> CreateAndActive(IFormFile file, ApkType apkType, bool isForce = false)
    {
        OperationResult op = new OperationResult();

        #region Validation
        if (file == null || file.Length == 0)
            return op.Failed("لطفا فایل خود را وارد کنید");

        // Check if the uploaded file is an APK
        if (Path.GetExtension(file.FileName).ToLower() != ".apk")
            return op.Failed("لطفا فایلی با پسوند .apk وارد کنید");

        #endregion

        var activeApks = _androidApkVersionRepository.GetActives(apkType);

         await activeApks.ExecuteUpdateAsync(setter => setter.SetProperty(e => e.IsActive, IsActive.False));
        _androidApkVersionRepository.SaveChanges();

        var folderName = apkType == ApkType.WebView ? "GozreshgirWebView" : "GozreshgirFaceDetection";
        var path = Path.Combine($"{_taskRepository.GetWebEnvironmentPath()}", "Storage",
            "Apk", "Android", folderName);

        Directory.CreateDirectory(path);

        // Read APK metadata with error handling
        ApkInfo apk;
        try
        {
            apk = ApkHelper.ReadApkInfo(file.OpenReadStream());
            
            // Validate APK info
            if (string.IsNullOrEmpty(apk.VersionName) || string.IsNullOrEmpty(apk.VersionCode))
            {
                return op.Failed("فایل APK معتبر نیست - اطلاعات نسخه یافت نشد");
            }
            
            // Validate version code is numeric
            if (!int.TryParse(apk.VersionCode, out _))
            {
                return op.Failed("فایل APK معتبر نیست - کد نسخه باید عددی باشد");
            }
        }
        catch (Exception ex)
        {
            return op.Failed("خطا در خواندن فایل APK: " + ex.Message);
        }

        string uniqueFileName = $"{Path.GetFileNameWithoutExtension(file.FileName)}.v{apk.VersionName}{Path.GetExtension(file.FileName)}";
        string filepath = Path.Combine(path, uniqueFileName);

        await using (var stream = new FileStream(filepath, FileMode.Create))
        {
            await file.CopyToAsync(stream);
        }

        var entity = new AndroidApkVersion(apk.VersionName, apk.VersionCode, IsActive.True, filepath, apkType, isForce);
        _androidApkVersionRepository.Create(entity);
        _androidApkVersionRepository.SaveChanges();
        return op.Succcedded();
    }

    public async Task<OperationResult> CreateAndDeActive(IFormFile file, ApkType apkType, bool isForce = false)
    {
        OperationResult op = new OperationResult();

        #region Validation
        if (file == null || file.Length == 0)
            return op.Failed("لطفا فایل خود را وارد کنید");

        // Check if the uploaded file is an APK
        if (Path.GetExtension(file.FileName).ToLower() != ".apk")
            return op.Failed("لطفا فایلی با پسوند .apk وارد کنید");

        #endregion


        var folderName = apkType == ApkType.WebView ? "GozreshgirWebView" : "GozreshgirFaceDetection";
        var path = Path.Combine($"{_taskRepository.GetWebEnvironmentPath()}", "Storage",
            "Apk", "Android", folderName);

        Directory.CreateDirectory(path);

        // Read APK metadata with error handling
        ApkInfo apk;
        try
        {
            apk = ApkHelper.ReadApkInfo(file.OpenReadStream());
            
            // Validate APK info
            if (string.IsNullOrEmpty(apk.VersionName) || string.IsNullOrEmpty(apk.VersionCode))
            {
                return op.Failed("فایل APK معتبر نیست - اطلاعات نسخه یافت نشد");
            }
            
            // Validate version code is numeric
            if (!int.TryParse(apk.VersionCode, out _))
            {
                return op.Failed("فایل APK معتبر نیست - کد نسخه باید عددی باشد");
            }
        }
        catch (Exception ex)
        {
            return op.Failed("خطا در خواندن فایل APK: " + ex.Message);
        }

        string uniqueFileName = $"{Path.GetFileNameWithoutExtension(file.FileName)}.v{apk.VersionName}{Path.GetExtension(file.FileName)}";


        string filepath = Path.Combine(path, uniqueFileName);

        await using (var stream = new FileStream(filepath, FileMode.Create))
        {
           await file.CopyToAsync(stream);
        }

        var entity = new AndroidApkVersion(apk.VersionName, apk.VersionCode, IsActive.False, filepath, apkType, isForce);
        _androidApkVersionRepository.Create(entity);
        _androidApkVersionRepository.SaveChanges();
        return op.Succcedded();
    }

    public async Task<string> GetLatestActiveVersionPath(ApkType apkType)
    {
       return await _androidApkVersionRepository.GetLatestActiveVersionPath(apkType);
    }

    public OperationResult Remove(long id)
    {
        OperationResult op = new OperationResult();
        var entity = _androidApkVersionRepository.Get(id);
        if (entity == null)
            return op.Failed("چنین آیتمی وجود ندارد");
        var path = entity.Path;
        

        _androidApkVersionRepository.Remove(entity);
        
        _androidApkVersionRepository.SaveChanges();
        if (System.IO.File.Exists(path))
        {
            System.IO.File.Delete(path);
        }
        return op.Succcedded();
    }

    public bool HasAndroidApkToDownload(ApkType apkType)
    {
       return _androidApkVersionRepository.Exists(x => x.IsActive == IsActive.True && x.ApkType == apkType);
    }

    public Task<AndroidApkVersionInfo> GetLatestActiveInfo(ApkType apkType, int currentVersionCode)
    {
        var latest = _androidApkVersionRepository.GetLatestActive(apkType);
        if (latest == null)
            return Task.FromResult(new AndroidApkVersionInfo(0, "0", false, false, string.Empty, string.Empty));

        // Return API endpoint for downloading APK file
        var fileUrl = $"/api/android-apk/download?type={apkType}";
        int latestCode = 0;
        int.TryParse(latest.VersionCode, out latestCode);
        var shouldUpdate = latestCode > currentVersionCode;
        return Task.FromResult(new AndroidApkVersionInfo(latestCode, latest.VersionName, shouldUpdate, latest.IsForce, fileUrl, "Bug fixes and improvements"));
    }
}