using System.Linq;
using System.Threading.Tasks;
using isnd.Data.Catalog;
using isnd.Helpers;
using isnd.Services;
using isnd.Entities;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using System.Collections.Generic;

namespace isnd.Controllers
{

    public partial class PackagesController
    {

        // https://docs.microsoft.com/en-us/nuget/api/catalog-resource#versioning
        [HttpGet(_pkgRootPrefix + ApiConfig.Catalog)]
        public IActionResult CatalogIndex()
        {
            return Ok(PackageManager.CurrentCatalogIndex);
        }
        
        [HttpGet(_pkgRootPrefix + ApiConfig.CatalogPage + "-{id}")]
        public IActionResult Index(string id)
        {
            // https://docs.microsoft.com/en-us/nuget/api/catalog-resource#versioning
            return Ok(PackageManager.CurrentCatalogPages[int.Parse(id)]);
        }

        [HttpGet(_pkgRootPrefix + ApiConfig.Registration + "/{id}/{*lower}")]
        public async Task<IActionResult> CatalogRegistrationAsync(string id, string lower)
        {
            string pkgType = ParamHelpers.Optional(ref lower);
            var pkgVersion = await dbContext.PackageVersions
                .Include(v => v.LatestCommit)
                .SingleOrDefaultAsync(
                v => v.PackageId == id &&
                v.FullString == lower &&
                v.Type == pkgType
            );
            if (pkgVersion == null) return NotFound();
            return Ok();
         }
        

        [HttpGet(_pkgRootPrefix + ApiConfig.CatalogLeaf + "/{id}/{version}/{*lower}")]
        public async Task<IActionResult> CatalogLeafAsync(string id, string version, string lower)
        {
            var pkgvs = this.packageManager.GetCatalogLeaf(id, version, lower)
            .ToArray();

            if (pkgvs.Count()==0) return NotFound();

            List <string> types = pkgvs.Select(
                v => v.Type ?? "Dependency"
            ).Distinct().ToList();
            if (!types.Contains("PackageDelete"))
            types.Add("PackageDetails");
            var pub = pkgvs.Last().Package.CommitTimeStamp;
            var firstpub = pkgvs.First().Package.CommitTimeStamp;

            return Ok(new CatalogLeaf
            {
                CommitId = id,
                Id = id,
                CommitTimeStamp = firstpub,
                Version = version,
                Published = pub,
                RefType = types.ToArray(),
            
            });
        }

    }
}