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

"""

 (c) 2014 - Copyright Red Hat Inc

 Authors:

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

"""

import flask

import os

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.doc_utils

import progit.lib

import progit.forms

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

                    is_repo_admin, authenticated)

## URLs

@APP.route('/<repo>/issue/<int:issueid>/add', methods=('GET', 'POST'))</int:issueid></repo>

@APP.route('/fork/<username>/<repo>/issue/<int:issueid>/add',</int:issueid></repo></username>

           methods=('GET', 'POST'))

def add_comment_issue(repo, issueid, username=None):

    ''' Add a comment to an issue. '''

    repo = progit.lib.get_project(SESSION, repo, user=username)

    if repo is None:

        flask.abort(404, 'Project not found')

    if not repo.issue_tracker:

        flask.abort(404, 'No issue tracker found for this project')

    issue = progit.lib.get_issue(SESSION, repo.id, issueid)

    if issue is None or issue.project != repo:

        flask.abort(404, 'Issue not found')

    form = progit.forms.AddIssueCommentForm()

    if form.validate_on_submit():

        comment = form.comment.data

        try:

            message = progit.lib.add_issue_comment(

                SESSION,

                issue=issue,

                comment=comment,

                user=flask.g.fas_user.username,

                ticketfolder=APP.config['TICKETS_FOLDER'],

            )

            SESSION.commit()

            flask.flash(message)

        except SQLAlchemyError, err:  # pragma: no cover

            SESSION.rollback()

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

    return flask.redirect(flask.url_for(

        'view_issue', username=username, repo=repo.name, issueid=issueid))

@APP.route('/<repo>/issue/<int:issueid>/tag', methods=['POST'])</int:issueid></repo>

@APP.route('/fork/<username>/<repo>/issue/<int:issueid>/tag',</int:issueid></repo></username>

           methods=['POST'])

@cla_required

def add_tag_issue(repo, issueid, username=None):

    ''' Add a tag to an issue. '''

    repo = progit.lib.get_project(SESSION, repo, user=username)

    if repo is None:

        flask.abort(404, 'Project not found')

    if not repo.issue_tracker:

        flask.abort(404, 'No issue tracker found for this project')

    issue = progit.lib.get_issue(SESSION, repo.id, issueid)

    if issue is None or issue.project != repo:

        flask.abort(404, 'Issue not found')

    form = progit.forms.AddIssueTagForm()

    cat = None

    if form.validate_on_submit():

        tags = form.tag.data

        for tag in tags.split(','):

            tag = tag.strip()

            try:

                message = progit.lib.add_issue_tag(

                    SESSION,

                    issue=issue,

                    tag=tag,

                    user=flask.g.fas_user.username,

                    ticketfolder=APP.config['TICKETS_FOLDER'],

                )

                SESSION.commit()

                flask.flash(message)

            except SQLAlchemyError, err:  # pragma: no cover

                SESSION.rollback()

                LOG.error(err)

                flask.flash('Could not add tag: %s' % tag, 'error')

    return flask.redirect(flask.url_for(

        'view_issue', username=username, repo=repo.name, issueid=issueid))

@APP.route('/<repo>/issue/<int:issueid>/assigned', methods=['POST'])</int:issueid></repo>

@APP.route('/fork/<username>/<repo>/issue/<int:issueid>/assigned',</int:issueid></repo></username>

           methods=['POST'])

@cla_required

def add_assignee_issue(repo, issueid, username=None):

    ''' Add an assignee to an issue. '''

    repo = progit.lib.get_project(SESSION, repo, user=username)

    if repo is None:

        flask.abort(404, 'Project not found')

    if not repo.issue_tracker:

        flask.abort(404, 'No issue tracker found for this project')

    issue = progit.lib.get_issue(SESSION, repo.id, issueid)

    if issue is None or issue.project != repo:

        flask.abort(404, 'Issue not found')

    form = progit.forms.AddIssueAssigneeForm()

    cat = None

    if form.validate_on_submit():

        assignee = form.assignee.data

        try:

            message = progit.lib.add_issue_assignee(

                SESSION,

                issue=issue,

                assignee=assignee,

                user=flask.g.fas_user.username,

                ticketfolder=APP.config['TICKETS_FOLDER'],)

            if message:

                SESSION.commit()

                flask.flash(message)

        except progit.exceptions.ProgitException, err:

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

        except SQLAlchemyError, err:  # pragma: no cover

            SESSION.rollback()

            LOG.error(err)

            flask.flash('Could not assigned issue to: %s' % assignee, 'error')

    return flask.redirect(flask.url_for(

        'view_issue', username=username, repo=repo.name, issueid=issueid))

@APP.route('/<repo>/tag/<tag>/edit', methods=('GET', 'POST'))</tag></repo>

@APP.route('/fork/<username>/<repo>/tag/<tag>/edit', methods=('GET', 'POST'))</tag></repo></username>

@cla_required

def edit_tag(repo, tag, username=None):

    """ Edit the specified tag of a project.

    """

    repo = progit.lib.get_project(SESSION, repo, user=username)

    if not repo:

        flask.abort(404, 'Project not found')

    if not is_repo_admin(repo):

        flask.abort(

            403,

            'You are not allowed to add users to this project')

    form = progit.forms.AddIssueTagForm()

    if form.validate_on_submit():

        new_tag = form.tag.data

        msgs = progit.lib.edit_issue_tags(SESSION, repo, tag, new_tag)

        SESSION.commit()

        for msg in msgs:

            flask.flash(msg)

        return flask.redirect(flask.url_for(

            '.view_settings', repo=repo.name, username=username)

        )

    return flask.render_template(

        'edit_tag.html',

        form=form,

        username=username,

        repo=repo,

        tag=tag,

    )

@APP.route('/<repo>/droptag/', methods=['POST'])</repo>

@APP.route('/fork/<username>/<repo>/droptag/', methods=['POST'])</repo></username>

@cla_required

def remove_tag(repo, username=None):

    """ Remove the specified tag from the project.

    """

    repo = progit.lib.get_project(SESSION, repo, user=username)

    if not repo:

        flask.abort(404, 'Project not found')

    if not is_repo_admin(repo):

        flask.abort(

            403,

            'You are not allowed to change the users for this project')

    form = progit.forms.AddIssueTagForm()

    if form.validate_on_submit():

        tags = form.tag.data

        tags = [tag.strip() for tag in tags.split(',')]

        msgs = progit.lib.remove_issue_tags(SESSION, repo, tags)

        SESSION.commit()

        for msg in msgs:

            flask.flash(msg)

    return flask.redirect(

        flask.url_for('.view_settings', repo=repo.name, username=username)

    )

@APP.route('/<repo>/issues')</repo>

@APP.route('/fork/<username>/<repo>/issues')</repo></username>

def view_issues(repo, username=None):

    """ List all issues associated to a repo

    """

    status = flask.request.args.get('status', None)

    tags = flask.request.args.getlist('tags', None)

    tags = [tag for tag in tags if tag]

    assignee = flask.request.args.get('assignee', None)

    author = flask.request.args.get('author', None)

    repo = progit.lib.get_project(SESSION, repo, user=username)

    if repo is None:

        flask.abort(404, 'Project not found')

    if not repo.issue_tracker:

        flask.abort(404, 'No issue tracker found for this project')

    if status is not None:

        if status.lower() == 'closed':

            issues = progit.lib.get_issues(

                SESSION,

                repo,

                closed=True,

                tags=tags,

                assignee=assignee,

                author=author,

            )

        else:

            issues = progit.lib.get_issues(

                SESSION,

                repo,

                status=status,

                tags=tags,

                assignee=assignee,

                author=author,

            )

    else:

        issues = progit.lib.get_issues(

            SESSION, repo, status='Open', tags=tags, assignee=assignee,

            author=author)

    tag_list = progit.lib.get_tags_of_project(SESSION, repo)

    return flask.render_template(

        'issues.html',

        select='issues',

        repo=repo,

        username=username,

        status=status,

        issues=issues,

        tags=tags,

        tag_list=tag_list,

    )

@APP.route('/<repo>/new_issue', methods=('GET', 'POST'))</repo>

@APP.route('/fork/<username>/<repo>/new_issue', methods=('GET', 'POST'))</repo></username>

@cla_required

def new_issue(repo, username=None):

    """ Create a new issue

    """

    repo = progit.lib.get_project(SESSION, repo, user=username)

    if repo is None:

        flask.abort(404, 'Project not found')

    status = progit.lib.get_issue_statuses(SESSION)

    form = progit.forms.IssueForm(status=status)

    if form.validate_on_submit():

        title = form.title.data

        content = form.issue_content.data

        try:

            message = progit.lib.new_issue(

                SESSION,

                repo=repo,

                title=title,

                content=content,

                user=flask.g.fas_user.username,

                ticketfolder=APP.config['TICKETS_FOLDER'],

            )

            SESSION.commit()

            flask.flash(message)

            return flask.redirect(flask.url_for(

                'view_issues', username=username, 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_issue.html',

        select='issues',

        form=form,

        repo=repo,

        username=username,

    )

@APP.route('/<repo>/issue/<int:issueid>', methods=('GET', 'POST'))</int:issueid></repo>

@APP.route('/fork/<username>/<repo>/issue/<int:issueid>',</int:issueid></repo></username>

           methods=('GET', 'POST'))

def view_issue(repo, issueid, username=None):

    """ List all issues associated to a repo

    """

    repo = progit.lib.get_project(SESSION, repo, user=username)

    if repo is None:

        flask.abort(404, 'Project not found')

    if not repo.issue_tracker:

        flask.abort(404, 'No issue tracker found for this project')

    issue = progit.lib.get_issue(SESSION, repo.id, issueid)

    if issue is None or issue.project != repo:

        flask.abort(404, 'Issue not found')

    status = progit.lib.get_issue_statuses(SESSION)

    form_comment = progit.forms.AddIssueCommentForm()

    form = form_tag = None

    if authenticated() and is_repo_admin(repo):

        form = progit.forms.UpdateIssueStatusForm(status=status)

        form_tag = progit.forms.AddIssueTagForm()

        if form.validate_on_submit():

            try:

                message = progit.lib.edit_issue(

                    SESSION,

                    issue=issue,

                    status=form.status.data,

                    ticketfolder=APP.config['TICKETS_FOLDER'],

                )

                SESSION.commit()

                flask.flash(message)

                url = flask.url_for(

                    'view_issue', username=username, repo=repo.name,

                    issueid=issueid)

                return flask.redirect(url)

            except SQLAlchemyError, err:  # pragma: no cover

                SESSION.rollback()

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

        elif flask.request.method == 'GET':

            form.status.data = issue.status

    return flask.render_template(

        'issue.html',

        select='issues',

        repo=repo,

        username=username,

        issue=issue,

        issueid=issueid,

        form=form,

        form_comment=form_comment,

        form_tag=form_tag,

    )

@APP.route('/<repo>/issue/<int:issueid>/edit', methods=('GET', 'POST'))</int:issueid></repo>

@APP.route('/fork/<username>/<repo>/issue/<int:issueid>/edit',</int:issueid></repo></username>

           methods=('GET', 'POST'))

@cla_required

def edit_issue(repo, issueid, username=None):

    """ Edit the specified issue

    """

    repo = progit.lib.get_project(SESSION, repo, user=username)

    if repo is None:

        flask.abort(404, 'Project not found')

    if not repo.issue_tracker:

        flask.abort(404, 'No issue tracker found for this project')

    if not is_repo_admin(repo):

        flask.abort(

            403, 'You are not allowed to edit issues for this project')

    issue = progit.lib.get_issue(SESSION, repo.id, issueid)

    if issue is None or issue.project != repo:

        flask.abort(404, 'Issue not found')

    status = progit.lib.get_issue_statuses(SESSION)

    form = progit.forms.IssueForm(status=status)

    if form.validate_on_submit():

        title = form.title.data

        content = form.issue_content.data

        status = form.status.data

        try:

            message = progit.lib.edit_issue(

                SESSION,

                issue=issue,

                title=title,

                content=content,

                status=status,

                ticketfolder=APP.config['TICKETS_FOLDER'],

            )

            SESSION.commit()

            flask.flash(message)

            url = flask.url_for(

                'view_issue', username=username,

                repo=repo.name, issueid=issueid)

            return flask.redirect(url)

        except progit.exceptions.ProgitException, err:

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

        except SQLAlchemyError, err:  # pragma: no cover

            SESSION.rollback()

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

    elif flask.request.method == 'GET':

        form.title.data = issue.title

        form.issue_content.data = issue.content

        form.status.data = issue.status

    return flask.render_template(

        'new_issue.html',

        select='issues',

        type='edit',

        form=form,

        repo=repo,

        username=username,

        issue=issue,

        issueid=issueid,

    )