nitweb: catalog api serves tags related data

Signed-off-by: Alexandre Terrasa <alexandre@moz-code.org>

diff --git a/src/web/api_catalog.nit b/src/web/api_catalog.nit
index 26f6ac3..4d4ca75 100644 (file)
--- a/src/web/api_catalog.nit
+++ b/src/web/api_catalog.nit
@@ -41,6 +41,9 @@ redef class APIRouter
                use("/catalog/bytags", new APICatalogByTags(config))
                use("/catalog/contributors", new APICatalogContributors(config))
                use("/catalog/stats", new APICatalogStats(config))
+
+               use("/catalog/tags", new APICatalogTags(config))
+               use("/catalog/tag/:tid", new APICatalogTag(config))
        end
 end
 
@@ -143,6 +146,57 @@ class APICatalogStats
        end
 end
 
+# Get all the tags from the catalog
+#
+# `GET /tags`: the list of tags associated with their number of packages
+class APICatalogTags
+       super APICatalogHandler
+
+       # Sorter to sort tags alphabetically
+       var tags_sorter = new CatalogTagsSorter
+
+       redef fun get(req, res) do
+               var obj = new JsonObject
+
+               var tags = config.catalog.tag2proj.keys.to_a
+               tags_sorter.sort(tags)
+
+               for tag in tags do
+                       if not config.catalog.tag2proj.has_key(tag) then continue
+                       obj[tag] = config.catalog.tag2proj[tag].length
+               end
+               res.json obj
+       end
+end
+
+# Get the packages related to a tag
+#
+# `GET /tag/:tid?p=1&n=10`: return a paginated list of packages
+class APICatalogTag
+       super APICatalogHandler
+
+       redef fun get(req, res) do
+               var page = req.int_arg("p")
+               var limit = req.int_arg("n")
+               var id = req.param("tid")
+               if id == null then
+                       res.api_error(400, "Missing tag")
+                       return
+               end
+               id = id.from_percent_encoding
+               if not config.catalog.tag2proj.has_key(id) then
+                       res.api_error(404, "Tag not found")
+                       return
+               end
+               var obj = new JsonObject
+               obj["tag"] = id
+               var mpackages = config.catalog.tag2proj[id]
+               mpackages_sorter.sort(mpackages)
+               var response = new JsonArray.from(mpackages)
+               obj["packages"] = paginate(response, response.length, page, limit)
+               res.json obj
+       end
+end
 redef class Catalog
 
        # Build the catalog from `mpackages`