lib/github: implements caching to maximize rate limit.
[nit.git] / lib / github / api.nit
index 4103878..2655ae3 100644 (file)
@@ -133,7 +133,7 @@ class GithubAPI
 
        # Load the json object from Github.
        # See `GithubEntity::load_from_github`.
-       private fun load_from_github(key: String): JsonObject do
+       protected fun load_from_github(key: String): JsonObject do
                message(1, "Get {key} (github)")
                var res = get(key)
                if was_error then return new JsonObject
@@ -251,6 +251,73 @@ class GithubAPI
                var milestone = new Milestone(self, repo, id)
                return milestone.load_from_github
        end
+
+       # Get the Github issue event with `id`.
+       #
+       # Returns `null` if the event cannot be found.
+       #
+       #     var api = new GithubAPI(get_github_oauth)
+       #     var repo = api.load_repo("privat/nit")
+       #     assert repo isa Repo
+       #     var event = api.load_issue_event(repo, 199674194)
+       #     assert event.actor.login == "privat"
+       #     assert event.event == "labeled"
+       #     assert event.labl.name == "need_review"
+       #     assert event.issue.number == 945
+       fun load_issue_event(repo: Repo, id: Int): nullable IssueEvent do
+               var event = new IssueEvent(self, repo, id)
+               event.load_from_github
+               if was_error then return null
+               return event
+       end
+
+       # Get the Github commit comment with `id`.
+       #
+       # Returns `null` if the comment cannot be found.
+       #
+       #     var api = new GithubAPI(get_github_oauth)
+       #     var repo = api.load_repo("privat/nit")
+       #     assert repo != null
+       #     var comment = api.load_commit_comment(repo, 8982707)
+       #     assert comment.user.login == "Morriar"
+       #     assert comment.body == "For testing purposes..."
+       #     assert comment.commit.sha == "7eacb86d1e24b7e72bc9ac869bf7182c0300ceca"
+       fun load_commit_comment(repo: Repo, id: Int): nullable CommitComment do
+               var comment = new CommitComment(self, repo, id)
+               return comment.load_from_github
+       end
+
+       # Get the Github issue comment with `id`.
+       #
+       # Returns `null` if the comment cannot be found.
+       #
+       #     var api = new GithubAPI(get_github_oauth)
+       #     var repo = api.load_repo("privat/nit")
+       #     assert repo != null
+       #     var comment = api.load_issue_comment(repo, 6020149)
+       #     assert comment.user.login == "privat"
+       #     assert comment.created_at.to_s == "2012-05-30T20:16:54Z"
+       #     assert comment.issue.number == 10
+       fun load_issue_comment(repo: Repo, id: Int): nullable IssueComment do
+               var comment = new IssueComment(self, repo, id)
+               return comment.load_from_github
+       end
+
+       # Get the Github diff comment with `id`.
+       #
+       # Returns `null` if the comment cannot be found.
+       #
+       #     var api = new GithubAPI(get_github_oauth)
+       #     var repo = api.load_repo("privat/nit")
+       #     assert repo != null
+       #     var comment = api.load_review_comment(repo, 21010363)
+       #     assert comment.path == "src/modelize/modelize_property.nit"
+       #     assert comment.original_position == 26
+       #     assert comment.pull.number == 945
+       fun load_review_comment(repo: Repo, id: Int): nullable ReviewComment do
+               var comment = new ReviewComment(self, repo, id)
+               return comment.load_from_github
+       end
 end
 
 # Something returned by the Github API.
@@ -427,6 +494,19 @@ class Repo
                return res
        end
 
+       # List of contributor related statistics.
+       fun contrib_stats: Array[ContributorStats] do
+               api.message(1, "Get contributor stats for {full_name}")
+               var res = new Array[ContributorStats]
+               var array = api.get("{key}/stats/contributors")
+               if array isa JsonArray then
+                       for obj in array do
+                               res.add new ContributorStats.from_json(api, obj.as(JsonObject))
+                       end
+               end
+               return res
+       end
+
        # Repo default branch.
        fun default_branch: Branch do
                var name = json["default_branch"].to_s
@@ -556,6 +636,17 @@ class Commit
                return new ISODate.from_string(author["date"].to_s)
        end
 
+       # List files staged in this commit.
+       fun files: Array[GithubFile] do
+               var res = new Array[GithubFile]
+               var files = json["files"]
+               if not files isa JsonArray then return res
+               for obj in files do
+                       res.add(new GithubFile(obj.as(JsonObject)))
+               end
+               return res
+       end
+
        # Commit message.
        fun message: String do return json["commit"].as(JsonObject)["message"].to_s
 end
@@ -617,6 +708,27 @@ class Issue
                return new Milestone.from_json(api, repo, milestone)
        end
 
+       # List of comments made on this issue.
+       fun comments: Array[IssueComment] do
+               var res = new Array[IssueComment]
+               var count = comments_count
+               var page = 1
+               var array = api.get("{key}/comments?page={page}")
+               if not array isa JsonArray then
+                       return res
+               end
+               while not array.is_empty and res.length < count do
+                       for obj in array do
+                               if not obj isa JsonObject then continue
+                               var id = obj["id"].as(Int)
+                               res.add(api.load_issue_comment(repo, id).as(not null))
+                       end
+                       page += 1
+                       array = api.get("{key}/comments?page={page}").as(JsonArray)
+               end
+               return res
+       end
+
        # Number of comments on this issue.
        fun comments_count: Int do return json["comments"].to_s.to_i
 
@@ -644,6 +756,22 @@ class Issue
        # Full description of the issue.
        fun body: String  do return json["body"].to_s
 
+       # List of events on this issue.
+       fun events: Array[IssueEvent] do
+               var res = new Array[IssueEvent]
+               var page = 1
+               var array = api.get("{key}/events?page={page}").as(JsonArray)
+               while not array.is_empty do
+                       for obj in array do
+                               if not obj isa JsonObject then continue
+                               res.add new IssueEvent.from_json(api, repo, obj)
+                       end
+                       page += 1
+                       array = api.get("{key}/events?page={page}").as(JsonArray)
+               end
+               return res
+       end
+
        # User that closed this issue (if any).
        fun closed_by: nullable User do
                var closer = json["closed_by"]
@@ -872,3 +1000,226 @@ abstract class Comment
        # Comment body text.
        fun body: String do return json["body"].to_s
 end
+
+# A comment made on a commit.
+class CommitComment
+       super Comment
+
+       redef var key is lazy do return "{repo.key}/comments/{id}"
+
+       # Commented commit.
+       fun commit: Commit do
+               return api.load_commit(repo, json["commit_id"].to_s).as(not null)
+       end
+
+       # Position of the comment on the line.
+       fun position: nullable String do
+               if not json.has_key("position") then return null
+               var res = json["position"]
+               if res == null then return null
+               return res.to_s
+       end
+
+       # Line of the comment.
+       fun line: nullable String do
+               if not json.has_key("line") then return null
+               var res = json["line"]
+               if res == null then return null
+               return res.to_s
+       end
+
+       # Path of the commented file.
+       fun path: String do return json["path"].to_s
+end
+
+# Comments made on Github issue and pull request pages.
+#
+# Should be accessed from `GithubAPI::load_issue_comment`.
+#
+# See <https://developer.github.com/v3/issues/comments/>.
+class IssueComment
+       super Comment
+
+       redef var key is lazy do return "{repo.key}/issues/comments/{id}"
+
+       # Issue that contains `self`.
+       fun issue: Issue do
+               var number = issue_url.split("/").last.to_i
+               return api.load_issue(repo, number).as(not null)
+       end
+
+       # Link to the issue document on API.
+       fun issue_url: String do return json["issue_url"].to_s
+end
+
+# Comments made on Github pull request diffs.
+#
+# Should be accessed from `GithubAPI::load_diff_comment`.
+#
+# See <https://developer.github.com/v3/pulls/comments/>.
+class ReviewComment
+       super Comment
+
+       redef var key is lazy do return "{repo.key}/pulls/comments/{id}"
+
+       # Pull request that contains `self`.
+       fun pull: PullRequest do
+               var number = pull_request_url.split("/").last.to_i
+               return api.load_pull(repo, number).as(not null)
+       end
+
+       # Link to the pull request on API.
+       fun pull_request_url: String do return json["pull_request_url"].to_s
+
+       # Diff hunk.
+       fun diff_hunk: String do return json["diff_hunk"].to_s
+
+       # Path of commented file.
+       fun path: String do return json["path"].to_s
+
+       # Position of the comment on the file.
+       fun position: Int do return json["position"].to_s.to_i
+
+       # Original position in the diff.
+       fun original_position: Int do return json["original_position"].to_s.to_i
+
+       # Commit referenced by this comment.
+       fun commit_id: String do return json["commit_id"].to_s
+
+       # Original commit id.
+       fun original_commit_id: String do return json["original_commit_id"].to_s
+end
+
+# An event that occurs on a Github `Issue`.
+#
+# Should be accessed from `GithubAPI::load_issue_event`.
+#
+# See <https://developer.github.com/v3/issues/events/>.
+class IssueEvent
+       super RepoEntity
+
+       redef var key is lazy do return "{repo.key}/issues/events/{id}"
+
+       # Event id on Github.
+       var id: Int
+
+       redef init from_json(api, repo, json) do
+               self.id = json["id"].as(Int)
+               super
+       end
+
+       # Issue that contains `self`.
+       fun issue: Issue do
+               return new Issue.from_json(api, repo, json["issue"].as(JsonObject))
+       end
+
+       # User that initiated the event.
+       fun actor: User do
+               return new User.from_json(api, json["actor"].as(JsonObject))
+       end
+
+       # Creation time in ISODate format.
+       fun created_at: ISODate do
+               return new ISODate.from_string(json["created_at"].to_s)
+       end
+
+       # Event descriptor.
+       fun event: String do return json["event"].to_s
+
+       # Commit linked to this event (if any).
+       fun commit_id: nullable String do
+               var res = json["commit_id"]
+               if res == null then return null
+               return res.to_s
+       end
+
+       # Label linked to this event (if any).
+       fun labl: nullable Label do
+               var res = json["label"]
+               if not res isa JsonObject then return null
+               return new Label.from_json(api, repo, res)
+       end
+
+       # User linked to this event (if any).
+       fun assignee: nullable User do
+               var res = json["assignee"]
+               if not res isa JsonObject then return null
+               return new User.from_json(api, res)
+       end
+
+       # Milestone linked to this event (if any).
+       fun milestone: nullable Milestone do
+               var res = json["milestone"]
+               if not res isa JsonObject then return null
+               return new Milestone.from_json(api, repo, res)
+       end
+
+       # Rename linked to this event (if any).
+       fun rename: nullable RenameAction do
+               var res = json["rename"]
+               if res == null then return null
+               return new RenameAction(res.as(JsonObject))
+       end
+end
+
+# A rename action maintains the name before and after a renaming action.
+class RenameAction
+
+       # JSON content.
+       var json: JsonObject
+
+       # Name before renaming.
+       fun from: String do return json["from"].to_s
+
+       # Name after renaming.
+       fun to: String do return json["to"].to_s
+end
+
+# Contributors list with additions, deletions, and commit counts.
+#
+# Should be accessed from `Repo::contrib_stats`.
+#
+# See <https://developer.github.com/v3/repos/statistics/>.
+class ContributorStats
+       super Comparable
+
+       redef type OTHER: ContributorStats
+
+       # Github API client.
+       var api: GithubAPI
+
+       # Json content.
+       var json: JsonObject
+
+       # Init `self` from a `json` object.
+       init from_json(api: GithubAPI, json: JsonObject) do
+               self.api = api
+               self.json = json
+       end
+
+       # User these statistics are about.
+       fun author: User do
+               return new User.from_json(api, json["author"].as(JsonObject))
+       end
+
+       # Total number of commit.
+       fun total: Int do return json["total"].to_s.to_i
+
+       # Are of weeks of activity with detailed statistics.
+       fun weeks: JsonArray do return json["weeks"].as(JsonArray)
+
+       # ContributorStats can be compared on the total amount of commits.
+       redef fun <(o) do return total < o.total
+end
+
+# A Github file representation.
+#
+# Mostly a wrapper around a json object.
+class GithubFile
+
+       # Json content.
+       var json: JsonObject
+
+       # File name.
+       fun filename: String do return json["filename"].to_s
+end