import os

from .page import Page

def redact_email(email):
    if email is None or len(email) == 0:
        return ''

    if '@' not in email:
        return email[0] + '...' + email[-1]

    local, domain = email.split('@')
    redacted_local = local[0] + '...' + local[-1] if len(local) > 0 else ''
    redacted_domain = domain.replace('.', '...')

    return redacted_local + '@' + redacted_domain

class CommitPage(Page):
    def __init__(self, out_dir, name, commit, content_subdir):
        super(CommitPage, self).__init__('commit.md', out_dir, os.path.join(commit.hexsha, 'index.md'), name, content_subdir)
        self.commit = commit

    def context(self):
        return {
            'commit': self.commit,
            'title': self.name + ': ' + self.commit.hexsha,
            'redacted_email': redact_email(self.commit.author.email)
        }