using System.Linq;
using System.Threading.Tasks;
using isnd.Services;
using isnd.Entities;
using Microsoft.AspNetCore.Mvc;
using System.Collections.Generic;
using NuGet.Versioning;

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}.json")]
        public IActionResult CatalogRegistration(string apiVersion, string id, string lower)
        {
            if (lower.Equals("index", System.StringComparison.OrdinalIgnoreCase))
            {
                var query = new Data.Catalog.RegistrationPageIndexQuery
                {
                    Query = id,
                    Prerelease = true
                };
                var index = packageManager.GetPackageRegistrationIndex(query);
                if (index == null) return NotFound();
                // query.TotalHits = result.Items.Select(i=>i.Items.Length).Aggregate((a,b)=>a+b);
                return Ok(index);
            }
            var leaf =  packageManager.SearchById(id,lower,null);
            if (leaf.Count()==0) return NotFound(new { id, lower });
            return Ok(leaf.First());
        }


        [HttpGet(_pkgRootPrefix + ApiConfig.CatalogLeaf + "/{id}/{version}/{lower}/index.json")]
        public IActionResult CatalogLeaf(string id, string pversion, string lower)
        {

            bool askForindex = lower == null;
            var pkgvs = this.packageManager.GetCatalogLeaf(id, pversion, 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()
            });
        }
    }
}