using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Threading.Tasks;

using Community.VisualStudio.Toolkit;

using VberAdmin.Models;
using VberAdmin.Templates.T4;

namespace VberAdmin.Generating;

public abstract class FileCreateBase
{
    /// <summary>
    /// 运用T4模板生成文件
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="viewModel"></param>
    /// <param name="fileName"></param>
    /// <param name="fileType"></param>
    protected virtual async Task<bool> CreateT4Async<T>(TemplateViewModel viewModel, string fileName, int fileType = 0)
        where T : IT4CodeBase, new()
    {
        T t4 = new T { Model = viewModel };
        string pageContent = t4.TransformText();
        string path = viewModel.DtoFolder;
        switch (fileType)
        {
            case 0:
                path = viewModel.DtoFolder;
                break;

            case 1:
                path = viewModel.ServiceFolder;
                break;

            case 2:
                path = viewModel.ControllerFolder;
                break;

            case 3:
                path = viewModel.ViewsFolder;
                break;
        }
        return await CreateFileAsync(viewModel, path, fileName, pageContent);
    }

    /// <summary>
    /// 创建文件
    /// </summary>
    /// <param name="viewModel"></param>
    /// <param name="sourcePath"></param>
    /// <param name="fileName"></param>
    /// <param name="content"></param>
    protected virtual async Task<bool> CreateFileAsync(TemplateViewModel viewModel, string sourcePath, string fileName, string content)
    {
        string path = Path.GetTempPath();
        Directory.CreateDirectory(path);
        string file = Path.Combine(path, fileName);
        File.WriteAllText(file, content, Encoding.UTF8);
        try
        {
            if (string.IsNullOrEmpty(sourcePath))
                sourcePath = @"..\..\";
            if (!File.Exists(sourcePath))
                Directory.CreateDirectory(sourcePath);
            string sourceUrl = Path.Combine(sourcePath, fileName);
            if (viewModel.IsReplace)
                File.Delete(sourceUrl);
            if (!File.Exists(sourceUrl))
            {
                File.Copy(file, sourceUrl);
                await VS.StatusBar.ShowMessageAsync($"VberCode:{fileName}代码已生成。");
                return true;
            }
        }
        finally
        {
            File.Delete(file);
        }

        return false;
    }

    /// <summary>
    /// 添加文件到项目中
    /// </summary>
    /// <param name="projectName"></param>
    /// <param name="files"></param>
    protected virtual async Task AddFilesToProjectAsync(string projectName, List<string> files)
    {
        try
        {
            var projects = await VS.Solutions.GetAllProjectsAsync();
            foreach (var project in projects)
            {
                if (project.Name == projectName)
                {
                    foreach (var file in files)
                    {
                        await VS.StatusBar.ShowMessageAsync($"VberCode：添加文件[{file}]...");
                        await project.AddExistingFilesAsync(file);
                    }
                    await project.SaveAsync();
                    break;
                }
            }
        }
        catch
        {
            //ignored
            //Debug.WriteLine(e);
        }
    }
}