From eba75d0db4a3392bd6db994ba01da3066d470847 Mon Sep 17 00:00:00 2001
From: Paul Schneider <paulschneider@free.fr>
Date: Tue, 22 Jun 2021 01:25:28 +0100
Subject: [PATCH] getversions

---
 .../Controllers/PackagesController.Put.cs     |  4 +-
 .../Controllers/PackagesController.cs         | 78 +++++++++++++++++--
 2 files changed, 73 insertions(+), 9 deletions(-)

diff --git a/src/nuget-host/Controllers/PackagesController.Put.cs b/src/nuget-host/Controllers/PackagesController.Put.cs
index a27912b..9018f97 100644
--- a/src/nuget-host/Controllers/PackagesController.Put.cs
+++ b/src/nuget-host/Controllers/PackagesController.Put.cs
@@ -55,7 +55,7 @@ namespace nuget_host.Controllers
                         var archive = new ZipArchive(fw);
 
                         var nuspec = archive.Entries.FirstOrDefault(e => e.FullName.EndsWith(".nuspec"));
-                        if (nuspec == null) return BadRequest("no nuspec from archive");
+                        if (nuspec == null) return BadRequest(new { error = "no nuspec from archive" });
                         string pkgpath;
                         NuGetVersion version;
                         string pkgid;
@@ -105,7 +105,7 @@ namespace nuget_host.Controllers
                                 ViewData["msg"] = "existant";
                                 ViewData["ecode"] = 1;
                                 logger.LogWarning("400 : existant");
-                                return BadRequest(ViewData);
+                                return base.BadRequest(new { error = ModelState });
                             }
                             else
                             {
diff --git a/src/nuget-host/Controllers/PackagesController.cs b/src/nuget-host/Controllers/PackagesController.cs
index 12c9616..12ecfe5 100644
--- a/src/nuget-host/Controllers/PackagesController.cs
+++ b/src/nuget-host/Controllers/PackagesController.cs
@@ -6,6 +6,7 @@ using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
+using NuGet.Versioning;
 using nuget_host.Data;
 using nuget_host.Entities;
 
@@ -40,7 +41,8 @@ namespace nuget_host.Controllers
         // Search
         // GET {@id}?q={QUERY}&skip={SKIP}&take={TAKE}&prerelease={PRERELEASE}&semVerLevel={SEMVERLEVEL}&packageType={PACKAGETYPE}
 
-        [HttpGet("~/search/index.json")]
+        const string _apiPrefix = "~/package";
+        [HttpGet(_apiPrefix + "/index.json")]
         public IActionResult Index(
             string q,
             string semVerLevel = defaultSemVer,
@@ -52,10 +54,14 @@ namespace nuget_host.Controllers
             if (string.IsNullOrEmpty(q))
             {
                 ModelState.AddModelError("q", "no value");
-                return NotFound(ModelState);
             }
-            else
+            if (take > maxTake)
             {
+                ModelState.AddModelError("take", "Maximum exceeded");
+            }
+            if (ModelState.IsValid)
+            {
+
                 var scope = dbContext.Packages
                 .Include(p => p.Versions)
                 .Where(
@@ -66,10 +72,13 @@ namespace nuget_host.Controllers
                 var result = new
                 {
                     totalHits = scope.Count(),
-                    data = scope.Skip(skip).Take(take).ToArray()
+                    data = scope.OrderBy(p => p.Id)
+                    .Skip(skip).Take(take).ToArray()
                 };
                 return Ok(result);
+
             }
+            return BadRequest(new { error = ModelState });
         }
 
         protected static bool CamelCaseMatch(string id, string q)
@@ -96,8 +105,9 @@ namespace nuget_host.Controllers
             }
             return false;
         }
+        const int maxTake = 100;
         // GET /autocomplete?id=nuget.protocol&prerelease=true
-        [HttpGet("~/autocomplete")]
+        [HttpGet(_apiPrefix + "/autocomplete")]
         public IActionResult AutoComplete(
             string id,
             string semVerLevel = defaultSemVer,
@@ -106,18 +116,72 @@ namespace nuget_host.Controllers
             int skip = 0,
             int take = 25)
         {
+            if (take > maxTake)
+            {
+                ModelState.AddModelError("take", "Maximum exceeded");
+                return BadRequest(ModelState);
+            }
+            var scope = dbContext.PackageVersions.Where(
+                         v => v.PackageId == id
+                            && (prerelease || !v.IsPrerelease)
+                            && (packageType == null || v.Type == packageType)
+                     )
+                     .OrderBy(v => v.FullString);
+            return Ok(new
+            {
+                data =scope.Select(v => v.FullString)
+                     .Skip(skip).Take(take).ToArray(),
+                totalHits =  scope.Count()
+            });
+        }
+        // TODO GET {@id}/{LOWER_ID}/index.json 
+        // LOWER_ID 	URL 	string 	yes 	The package ID, lowercased
+        // response : versions 	array of strings 	yes 	The versions available
+        [HttpGet(_apiPrefix + "/{id}/{lower}/index.json")]
+        public IActionResult GetVersions(
+            string id,
+            string lower,
+            bool prerelease = false,
+            string packageType = null,
+            int skip = 0,
+            int take = 25)
+        {
+            if (take > maxTake)
+            {
+                ModelState.AddModelError("take", "Maximum exceeded");
+            }
+            // NugetVersion
+            if (!NuGetVersion.TryParse(lower, out NuGetVersion parsedVersion))
+            {
+                ModelState.AddModelError("lower", "invalid version string");
+            }
+            if (!ModelState.IsValid)
+            {
+                return BadRequest(ModelState);
+            }
             return Ok(new
             {
-                data =
+                // TODO stocker MetaData plutôt que FullString en base,
+                // et en profiter pour corriger ce listing
+                versions =
                      dbContext.PackageVersions.Where(
                          v => v.PackageId == id
                             && (prerelease || !v.IsPrerelease)
                             && (packageType == null || v.Type == packageType)
-                     ).Select(v => v.FullString)
+                            && (parsedVersion.CompareTo(new SemanticVersion(v.Major, v.Minor, v.Patch)) < 0)
+                     )
+                     .OrderBy(v => v.FullString)
+                     .Select(v => v.FullString)
                      .Skip(skip).Take(take).ToArray()
             });
         }
 
+        // TODO GET GET {@id}/{LOWER_ID}/{LOWER_VERSION}/{LOWER_ID}.{LOWER_VERSION}.nupkg
+        // LOWER_ID 	URL 	string 	yes 	The package ID, lowercase
+        // LOWER_VERSION 	URL 	string 	yes 	The package version, normalized and lowercased
+        // response 200 : the package
+        // TODO GET {@id}/{LOWER_ID}/{LOWER_VERSION}/{LOWER_ID}.nuspec
+        // response 200 : the nuspec
 
     }
 }
\ No newline at end of file