import json
from src import ModuleManager, utils

COMMIT_URL = "https://github.com/%s/commit/%s"

@utils.export("channelset", {"setting": "github-hook",
    "help": ("Disable/Enable showing BitBot's github commits in the "
    "current channel"), "hidden": True})
class Module(ModuleManager.BaseModule):
    @utils.hook("api.post.github")
    def github(self, event):
        data = event["data"]
        try:
            data = json.loads(data)
        except:
            return

        if "commits" in data:
            full_name = data["repository"]["full_name"]
            hooks = self.bot.database.channel_settings.find_by_setting(
                "github-hook")
            for commit in data["commits"]:
                id = commit["id"]

                message = commit["message"].split("\n")
                message = [line.strip() for line in message]
                message = " ".join(message)

                author = "%s <%s>" % (commit["author"]["username"],
                    commit["author"]["email"])
                modified_count = len(commit["modified"])
                added_count = len(commit["added"])
                removed_count = len(commit["removed"])
                url = COMMIT_URL % (full_name, id[:8])

                line = ("(%s) [files: +%d ∆%d -%d] commit by '%s': %s - %s"
                    % (full_name, added_count, modified_count,
                    removed_count, author, message, url))
                hooks = [hook for hook in hooks if hook[2]]
                for server_id, channel_name, _ in hooks:
                    server = self.bot.get_server(server_id)
                    channel = server.get_channel(channel_name)
                    self.bot.trigger(self._make_trigger(channel, server, line))

    def _make_trigger(self, channel, server, line):
        return lambda: self.events.on("send.stdout").call(
            target=channel, module_name="Github", server=server, message=line)