using System.ComponentModel.DataAnnotations;
using System.IO;
using Microsoft.AspNetCore.Mvc;
using isnd.Attributes;
using isnd.Entities;
using isn.abst;
using System.Linq;
using Microsoft.Extensions.Logging;

namespace isnd.Controllers
{
    public partial class PackagesController
    {
        
        [HttpGet("~" + Constants.ApiVersionPrefix + ApiConfig.ContentBase + "/{id}/{version}/{idf}.{versionFromName}."
        + Constants.PacketFileExtension)]
        public IActionResult GetPackage(
           [FromRoute][SafeName][Required] string id, 
           [FromRoute][SafeName][Required] string version,
            [FromRoute] string idf, 
            [FromRoute] string versionFromName)
        {
            DirectoryInfo pkgsDirInfo = new DirectoryInfo(isndSettings.PackagesRootDir);

            var pkgDirInfo = pkgsDirInfo.GetDirectories().FirstOrDefault(
                s=>string.Compare(s.Name,id, System.StringComparison.InvariantCultureIgnoreCase)==0);
            if (pkgDirInfo==null)
                 return BadRequest("Package does´nt exist in the file system.");
            var pkgVersionDirInfo = pkgDirInfo.GetDirectories().FirstOrDefault(
                s=>s.Name==version);
            if (pkgVersionDirInfo==null)
                 return BadRequest("Package does´nt exist in the specified version.");
           
            var pkgNameSpec=$"{id}-{version}.{Constants.PacketFileExtension}";

            FileInfo pkgFileInfo = pkgVersionDirInfo.GetFiles()
            .FirstOrDefault(p=>string.Compare(p.Name,pkgNameSpec,
             System.StringComparison.InvariantCultureIgnoreCase)==0);

            if (pkgFileInfo==null || !pkgFileInfo.Exists)
            {
                logger.LogError($"Not found in {pkgVersionDirInfo.FullName} : {pkgNameSpec}");
                return BadRequest("Package version does´nt exist in the file system.");
            }
            return File(pkgFileInfo.OpenRead(), "application/zip; charset=binary");
        }

        // Web get spec
        [HttpGet("~" + Constants.ApiVersionPrefix + ApiConfig.ContentBase + "/{id}/{lower}/{idf}-{lowerFromName}."
        + Constants.SpecFileExtension)]
        public IActionResult GetNuspec(
            [FromRoute][SafeName][Required] string id,
            [FromRoute][SafeName][Required] string lower,
            [FromRoute][SafeName][Required] string idf,
            [FromRoute][SafeName][Required] string lowerFromName)
        {
            var pkgPath = Path.Combine(isndSettings.PackagesRootDir,
            id, lower, $"{id}." + Constants.SpecFileExtension);

            FileInfo pkgFileInfo = new FileInfo(pkgPath);
            if (!pkgFileInfo.Exists)
            {
                return BadRequest("Package info does´nt exist in the file system.");
            }

            return File(pkgFileInfo.OpenRead(), "text/xml; charset=utf-8");
        }

    }
}