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

"""

 (c) 2014 - Copyright Red Hat Inc

 Authors:

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

"""

import flask

import os

import tempfile

from math import ceil

import pygit2

from sqlalchemy.exc import SQLAlchemyError

from pygments import highlight

from pygments.lexers import guess_lexer

from pygments.lexers.text import DiffLexer

from pygments.formatters import HtmlFormatter

import progit.exceptions

import progit.lib

import progit.forms

from progit import APP, SESSION, LOG, __get_file_in_tree, cla_required

### Application

@APP.route('/')

def index():

    """ Front page of the application.

    """

    page = flask.request.args.get('page', 1)

    try:

        page = int(page)

    except ValueError:

        page = 1

    limit = APP.config['ITEM_PER_PAGE']

    start = limit * (page - 1)

    repos = progit.lib.list_projects(

        SESSION,

        fork=False,

        start=start,

        limit=limit)

    num_repos = progit.lib.list_projects(

        SESSION,

        fork=False,

        count=True)

    total_page = int(ceil(num_repos / float(limit)))

    return flask.render_template(

        'index.html',

        repos=repos,

        total_page=total_page,

        page=page,

    )

@APP.route('/users/')

def view_users():

    """ Present the list of users.

    """

    page = flask.request.args.get('page', 1)

    try:

        page = int(page)

    except ValueError:

        page = 1

    ## TODO: retrieve this from the DB

    users = ['pingou']

    limit = APP.config['ITEM_PER_PAGE']

    start = limit * (page - 1)

    end = limit * page

    users_length = len(users)

    users = users[start:end]

    total_page = int(ceil(users_length / float(limit)))

    return flask.render_template(

        'user_list.html',

        users=users,

        total_page=total_page,

        page=page,

    )

@APP.route('/user/<username>')</username>

def view_user(username):

    """ Front page of a specific user.

    """

    repopage = flask.request.args.get('repopage', 1)

    try:

        repopage = int(repopage)

    except ValueError:

        repopage = 1

    forkpage = flask.request.args.get('forkpage', 1)

    try:

        forkpage = int(forkpage)

    except ValueError:

        forkpage = 1

    limit = APP.config['ITEM_PER_PAGE']

    repo_start = limit * (repopage - 1)

    fork_start = limit * (forkpage - 1)

    repos = progit.lib.list_projects(

        SESSION,

        username=flask.g.fas_user.username,

        fork=False,

        start=repo_start,

        limit=limit)

    repos_length = progit.lib.list_projects(

        SESSION,

        username=flask.g.fas_user.username,

        fork=False,

        count=True)

    forks = progit.lib.list_projects(

        SESSION,

        username=flask.g.fas_user.username,

        fork=True,

        start=fork_start,

        limit=limit)

    forks_length = progit.lib.list_projects(

        SESSION,

        username=flask.g.fas_user.username,

        fork=True,

        count=True)

    total_page_repos = int(ceil(repos_length / float(limit)))

    total_page_forks = int(ceil(forks_length / float(limit)))

    repos_obj = [

        pygit2.Repository(

            os.path.join(APP.config['GIT_FOLDER'], repo.path))

        for repo in repos]

    forks_obj = [

        pygit2.Repository(

            os.path.join(APP.config['FORK_FOLDER'], repo.path))

        for repo in forks]

    return flask.render_template(

        'user_info.html',

        username=username,

        repos=repos,

        repos_obj=repos_obj,

        total_page_repos=total_page_repos,

        forks=forks,

        forks_obj=forks_obj,

        total_page_forks=total_page_forks,

        repopage=repopage,

        forkpage=forkpage,

    )

@APP.route('/new/', methods=('GET', 'POST'))

@cla_required

def new_project():

    """ Form to create a new project.

    """

    form = progit.forms.ProjectForm()

    if form.validate_on_submit():

        name = form.name.data

        description = form.description.data

        try:

            message = progit.lib.new_project(

                SESSION,

                name=name,

                description=description,

                user=flask.g.fas_user.username,

                folder=APP.config['GIT_FOLDER'],

            )

            SESSION.commit()

            flask.flash(message)

            return flask.redirect(flask.url_for('view_repo', repo=name))

        except progit.exceptions.ProgitException, err:

            flask.flash(str(err), 'error')

        except SQLAlchemyError, err:  # pragma: no cover

            SESSION.rollback()

            flask.flash(str(err), 'error')

    return flask.render_template(

        'new_project.html',

        form=form,

    )