# -*- coding: utf-8 -*-
"""Subversion commit logs support"""
from __future__ import absolute_import

from datetime import datetime

from .exceptions import CommitLogError


def updaterepo(project):
    """Not needed for a remote subversion repo"""
    return [{'error': False}]


def get_tag(rev_num, repo_path, client):
    tags_url = repo_path + '/tags'
    tags = client.ls(tags_url)

    for tag in tags:
        if 'created_rev' in tag and tag['created_rev'].number == rev_num:
            if 'name' in tag:
                return tag['name'].split('/')[-1]
    return ''


def getlogs(newrev, startrev):
    import pysvn

    logs = []
    log_messages = []
    loglimit = 200

    def get_login(realm, username, may_save):
        repo_user = newrev.branch.project.repo_user
        repo_pass = newrev.branch.project.repo_pass
        return True, repo_user, repo_pass, False

    client = pysvn.Client()
    if newrev.branch.project.repo_user != "":
        client.callback_get_login = get_login

    try:
        log_messages = \
            client.log(
                newrev.branch.project.repo_path,
                revision_start=pysvn.Revision(
                    pysvn.opt_revision_kind.number, startrev.commitid
                ),
                revision_end=pysvn.Revision(
                    pysvn.opt_revision_kind.number, newrev.commitid
                )
            )
    except pysvn.ClientError as e:
        raise CommitLogError(e.args)
    except ValueError:
        raise CommitLogError(
            "'%s' is an invalid subversion revision number" % newrev.commitid)
    log_messages.reverse()
    s = len(log_messages)
    while s > loglimit:
        log_messages = log_messages[:s]
        s = len(log_messages) - 1

    for log in log_messages:
        try:
            author = log.author
        except AttributeError:
            author = ""
        date = datetime.fromtimestamp(log.date).strftime("%Y-%m-%d %H:%M:%S")
        message = log.message
        tag = get_tag(log.revision.number,
                      newrev.branch.project.repo_path, client)
        # Add log unless it is the last commit log, which has already been tested
        logs.append({
            'date': date, 'author': author, 'message': message,
            'commitid': log.revision.number, 'tag': tag})
    return logs