#!/usr/bin/env python

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import os
import sys
import json
import urllib2
import git_submodule as GitSubmodule

chromium_version = '31.0.1650.63'
chromium_branch = '1650'

json_url = 'http://omahaproxy.appspot.com/all.json'
git_deps_url = 'http://src.chromium.org/chrome/branches/' + chromium_branch + '/src/.DEPS.git'
base_deps_url = 'http://src.chromium.org/chrome/releases/'

def currentVersion():
    return chromium_version

def currentBranch():
    return chromium_branch

def readReleaseChannels():
    response = urllib2.urlopen(json_url)
    raw_json = response.read().strip()
    data = json.loads(raw_json)
    channels = {}

    for obj in data:
        os = obj['os']
        channels[os] = []
        for ver in obj['versions']:
            channels[os].append({ 'channel': ver['channel'], 'version': ver['version'], 'branch': ver['true_branch'] })
    return channels

def readSubmodules():
    response = urllib2.urlopen(base_deps_url + chromium_version + '/DEPS')
    svn_deps = response.read().strip()

    response = urllib2.urlopen(git_deps_url)
    git_deps = response.read().strip()

    parser = GitSubmodule.DEPSParser()
    svn_submodules = parser.parse(svn_deps)
    git_submodules = parser.parse(git_deps)

    submodule_dict = {}
    git_dict = {}

    for sub in git_submodules:
        git_dict[sub.path] = sub

    for sub in svn_submodules:
        if 'reference_build' not in sub.path and (sub.revision or sub.shasum) and sub.path in git_dict:
            submodule_dict[sub.path] = sub

    for git in git_submodules:
        if git.path in submodule_dict:
            # We'll use the git repository instead of svn.
            module = submodule_dict[git.path]
            module.url = git.url
            if not module.shasum:
                # We use the git shasum as fallback.
                module.shasum = git.shasum

    return list(submodule_dict.values())