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#!/usr/bin/env python2
# Copyright 2015  Lars Wirzenius
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# =*= License: GPL-3+ =*=


import glob
import os
import shutil

import cliapp
import jinja2
import yaml

import icklib


class IckHTML(cliapp.Application):

    def process_args(self, args):
        ick_filename, html_dir = self.parse_command_line_args(args)
        ick = self.read_ick_file(ick_filename)
        self.create_html(ick_filename, ick, html_dir)

    def parse_command_line_args(self, args):
        if len(args) != 2:
            raise cliapp.AppException('Must have exactly two arguments')
        return args[0], args[1]

    def read_ick_file(self, filename):
        with open(filename) as f:
            return yaml.safe_load(f)

    def create_html(self, ick_filename, ick, html_dir):
        loader = jinja2.PackageLoader('icklib', 'templates')
        env = jinja2.Environment(
            loader=loader,
            autoescape=lambda foo: True,
            extensions=['jinja2.ext.autoescape'])

        statedir = icklib.create_statedir_from_ick(ick)

        self.create_index_html(ick_filename, ick, env, html_dir)
        for project in self.get_projects(ick):
            project.builds = statedir.get_build_infos(project.name)
            self.copy_build_files_to_html_dir(statedir, project, html_dir)
            self.create_project_html(statedir, project, env, html_dir)

    def create_index_html(self, ick_filename, ick, env, html_dir):
        vars = {
            'ick_filename': ick_filename,
            'projects': self.get_projects(ick),
            'statedir': icklib.create_statedir_from_ick(ick),
        }

        template = env.get_template('index.j2')
        with open(os.path.join(html_dir, 'index.html'), 'w') as f:
            f.write(template.render(**vars))
        
    def get_projects(self, ick):
        return sorted(
            icklib.create_projects_from_ick(ick, None),
            key=lambda p: p.name)

    def copy_build_files_to_html_dir(self, statedir, project, html_dir):
        for build in project.builds:
            build_dir = os.path.join(
                html_dir, project.name, str(build.build_number))
            if not os.path.exists(build_dir):
                os.makedirs(build_dir)
            self.copy_build_log(build, build_dir)
            self.copy_build_artifacts(statedir, project, build, build_dir)

    def copy_build_log(self, build, build_dir):
        orig = build.get_build_log_filename()
        target = os.path.join(build_dir, 'build_log.txt')
        shutil.copy2(orig, target)

    def copy_build_artifacts(self, statedir, project, build, build_dir):
        artifacts = build.get_artifacts_directory()
        target = os.path.join(build_dir, 'build_log.txt')
        for artifact in glob.glob(os.path.join(artifacts, '*')):
            shutil.copy2(artifact, build_dir)

    def create_project_html(self, statedir, project, env, html_dir):

        vars = {
            'project': project,
        }

        template = env.get_template('project.j2')
        html_file = os.path.join(html_dir, '%s.html' % project.name)
        with open(html_file, 'w') as f:
            f.write(template.render(**vars))

        self.copy_mtime(
            statedir.get_project_state_path(project.name),
            html_file)

    def copy_mtime(self, orig_filename, dest_filename):
        st = os.lstat(orig_filename)
        os.utime(dest_filename, (long(st.st_atime), long(st.st_mtime)))


if __name__ == '__main__':
    IckHTML().run()