import os

from .page import Page

def ref_names_for_commit(refs, commit_sha):
    ref_names = []
    if refs is None:
        return ref_names
    for ref in refs:
        if ref.commit.hexsha == commit_sha:
            ref_names.append(ref.name)

    return ref_names

class LogPage(Page):
    def __init__(self, out_dir, name, commits, branches, tags, content_subdir):
        super(LogPage, self).__init__('log.md', out_dir, 'l.md', name, content_subdir)
        self.commits = commits
        self.branches = branches
        self.tags = tags

    def _commits_with_refs(self):
        commits_context = []
        for commit in self.commits:
            refs = ref_names_for_commit(self.branches, commit.hexsha) + ref_names_for_commit(self.tags, commit.hexsha)
            commit_context = {
                'committed_datetime': commit.committed_datetime,
                'hexsha': commit.hexsha,
                'refs': refs,
                'summary': commit.summary
            }
            commits_context.append(commit_context)
        return commits_context

    def context(self):
        commits_context = []
        if self.commits is not None:
            commits_context = self._commits_with_refs()

        return {
            'commits': commits_context,
            'content_subdir': self.content_subdir,
            'title': self.name + ': Log'
        }