#!/usr/bin/env python
# Copyright (C) 2011 Google Inc. All rights reserved.
#
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# modification, are permitted provided that the following conditions are
# met:
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#     * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
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# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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import webapp2
from google.appengine.api import memcache

import json

from models import Builder
from models import Branch
from models import Platform
from models import Test


class ManifestHandler(webapp2.RequestHandler):
    def get(self):
        self.response.headers['Content-Type'] = 'text/plain; charset=utf-8';
        cache = memcache.get('manifest')
        if cache:
            self.response.out.write(cache)
            return

        test_map = {}
        platform_id_map = {}
        branch_id_map = {}
        for test in Test.all():
            branch_ids = [Branch.get(branch_key).id for branch_key in test.branches]
            platform_ids = [Platform.get(platform_key).id for platform_key in test.platforms]
            test_map[test.id] = {
                'name': test.name,
                'branchIds': branch_ids,
                'platformIds': platform_ids,
            }

            for platform_id in platform_ids:
                platform_id_map.setdefault(platform_id, {'tests': [], 'branches': []})
                platform_id_map[platform_id]['tests'].append(test.id)
                platform_id_map[platform_id]['branches'] += branch_ids

            for branch_id in branch_ids:
                branch_id_map.setdefault(branch_id, {'tests': [], 'platforms': []})
                branch_id_map[branch_id]['tests'].append(test.id)
                branch_id_map[branch_id]['platforms'] += platform_ids

        platform_map = {}
        for platform in Platform.all():
            if platform.id not in platform_id_map:
                continue
            platform_map[platform.id] = {
                'name': platform.name,
                'testIds': list(set(platform_id_map[platform.id]['tests'])),
                'branchIds': list(set(platform_id_map[platform.id]['branches'])),
            }

        branch_map = {}
        for branch in Branch.all():
            if branch.id not in branch_id_map:
                continue
            branch_map[branch.id] = {
                'name': branch.name,
                'testIds': list(set(branch_id_map[branch.id]['tests'])),
                'platformIds': list(set(branch_id_map[branch.id]['platforms'])),
            }

        result = json.dumps({'testMap': test_map, 'platformMap': platform_map, 'branchMap': branch_map})
        self.response.out.write(result)
        memcache.add('manifest', result)