# -*- coding: utf-8 -*-

"""

 (c) 2014 - Copyright Red Hat Inc

 Authors:

   Pierre-Yves Chibon <pingou@pingoured.fr></pingou@pingoured.fr>

"""

import os

import shutil

import sqlalchemy as sa

import pygit2

import wtforms

from flask.ext import wtf

from sqlalchemy.orm import relation

from sqlalchemy.orm import backref

from progit.hooks import BaseHook, RequiredIf

from progit.lib.model import BASE, Project

from progit import SESSION, APP, get_repo_path

class MailTable(BASE):

    """ Stores information about the irc hook deployed on a project.

    Table -- hook_mail

    """

    __tablename__ = 'hook_mail'

    id = sa.Column(sa.Integer, primary_key=True)

    project_id = sa.Column(

        sa.Integer,

        sa.ForeignKey('projects.id', onupdate='CASCADE'),

        nullable=False,

        unique=True,

        index=True)

    mail_to = sa.Column(sa.Text, nullable=False)

    active = sa.Column(sa.Boolean, nullable=False, default=False)

    project = relation(

        'Project', remote_side=[Project.id],

        backref=backref(

            'mail_hook', cascade="delete, delete-orphan",

            single_parent=True)

        )

class MailForm(wtf.Form):

    ''' Form to configure the mail hook. '''

    mail_to = wtforms.TextField(

        'Mail to',

        [RequiredIf('active')]

    )

    active = wtforms.BooleanField(

        'Active',

        [wtforms.validators.Optional()]

    )

class Mail(BaseHook):

    ''' Mail hooks. '''

    name = 'Mail'

    form = MailForm

    db_object = MailTable

    backref = 'mail_hook'

    form_fields = ['mail_to', 'active']

    @classmethod

    def install(cls, project, dbobj):

        ''' Method called to install the hook for a project.

        :arg project: a ``progit.model.Project`` object to which the hook

            should be installed

        '''

        repopath = get_repo_path(project)

        hook_files = os.path.join(

            os.path.dirname(os.path.realpath(__file__)), 'files')

        repo_obj = pygit2.Repository(repopath)

        # Configure the hook

        repo_obj.config.set_multivar(

            'multimailhook.mailingList',

            '',

            dbobj.mail_to

        )

        repo_obj.config.set_multivar(

            'multimailhook.environment', '', 'gitolite')

        # Install the hook itself

        shutil.copyfile(

            os.path.join(hook_files, 'git_multimail.py'),

            os.path.join(repopath, 'hooks', 'post-receive.mail')

        )

        os.chmod(

            os.path.join(repopath, 'hooks', 'post-receive.mail'),

            0755)

    @classmethod

    def remove(cls, project):

        ''' Method called to remove the hook of a project.

        :arg project: a ``progit.model.Project`` object to which the hook

            should be installed

        '''

        repopath = get_repo_path(project)

        hook_path = os.path.join(repopath, 'hooks', 'post-receive.mail')

        if os.path.exists(hook_path):

            os.unlink(hook_path)