using System.Linq;
using System.Threading.Tasks;
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 + "{apiVersion}/" + ApiConfig.Registration + "/{id}/{*lower}")]
        public async Task<IActionResult> CatalogRegistrationAsync(string apiVersion, string id, string lower)
        {
            bool askForindex = lower != null && lower.EndsWith(ApiConfig.Base);
            if (askForindex)
            {
                lower = lower.Substring(0, lower.Length - ApiConfig.Base.Length);
            }
            string pkgType = ParamHelpers.Optional(ref lower);
            var pkgFromname = packageManager.SearchByName(id, 0, 1);
            if (pkgFromname == null) return NotFound();
            return Ok(pkgFromname);
        }


        [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 last = pkgvs.Last();
            var pub = last.LatestCommit.CommitTimeStamp;

            return Ok(new Data.Packages.Catalog.CatalogLeaf
            {
                CommitId = last.CommitId,
                Id = id,
                CommitTimeStamp = pub,
                Version = last.FullString,
                Published = pub,
                RefType = types.ToArray(),

            });
        }

    }
}