lib/github: introduces comment abstraction

Github manage different kinds of comments (in commits, issues and diff).
The abstraction is used to factorize services from these kinds.

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

diff --git a/lib/github/api.nit b/lib/github/api.nit
index 79c0913..4103878 100644 (file)
--- a/lib/github/api.nit
+++ b/lib/github/api.nit
@@ -834,3 +834,41 @@ class Milestone
                return new ISODate.from_string(res.to_s)
        end
 end
+
+# A Github comment
+#
+# There is two kinds of comments:
+#
+# * `CommitComment` are made on a commit page.
+# * `IssueComment` are made on an issue or pull request page.
+# * `ReviewComment` are made on the diff associated to a pull request.
+abstract class Comment
+       super RepoEntity
+
+       # Identifier of this comment.
+       var id: Int
+
+       redef init from_json(api, repo, json) do
+               self.id = json["id"].as(Int)
+               super
+       end
+
+       # User that made this comment.
+       fun user: User do
+               return new User.from_json(api, json["user"].as(JsonObject))
+       end
+
+       # Creation time in ISODate format.
+       fun created_at: ISODate do
+               return new ISODate.from_string(json["created_at"].to_s)
+       end
+
+       # Last update time in ISODate format (if any).
+       fun updated_at: nullable ISODate do
+               if not json.has_key("updated_at") then return null
+               return new ISODate.from_string(json["updated_at"].to_s)
+       end
+
+       # Comment body text.
+       fun body: String do return json["body"].to_s
+end