# Copyright (c) 2012 Google Inc. All rights reserved.
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from webkitpy.tool.bot.patchanalysistask import PatchAnalysisTask, PatchAnalysisTaskDelegate, UnableToApplyPatch, PatchIsNotValid


class StyleQueueTaskDelegate(PatchAnalysisTaskDelegate):
    def parent_command(self):
        return "style-queue"


class StyleQueueTask(PatchAnalysisTask):
    def validate(self):
        # FIXME: Need a way to ask the status server for the latest status of a security bug.
        # Attachments downloaded from the status server do not have an associated bug and
        # reflect the Bugzilla state at the time they were uploaded to the status server.
        # See <https://bugs.webkit.org/show_bug.cgi?id=186817>.
        self._patch = self._delegate.refetch_patch(self._patch)
        if self._patch.is_obsolete():
            self.error = "Patch is obsolete."
            return False
        if self._patch.bug() and self._patch.bug().is_closed():
            self.error = "Bug is already closed."
            return False
        if self._patch.review() == "-":
            self.error = "Patch is marked r-."
            return False
        return True

    def _check_style(self):
        return self._run_command([
            "check-style-local",
            "--non-interactive",
            "--quiet",
        ],
        "Style checked",
        "Patch did not pass style check")

    def _apply_watch_list(self):
        return self._run_command([
            "apply-watchlist-local",
            self._patch.bug_id(),
        ],
        "Watchlist applied",
        "Unabled to apply watchlist")

    def run(self):
        if not self._clean():
            return False
        if not self._update():
            return False
        if not self._apply():
            raise UnableToApplyPatch(self._patch)
        self._apply_watch_list()
        if not self._check_style():
            return self.report_failure()
        return True