#!/usr/bin/python
import json
import urllib2
import base64

"""
Ansible module to add authorized_keys for ssh logins.
(c) 2013, Phillip Gentry <phillip@cx.com>

This file is part of Ansible

Ansible 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.

Ansible 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 Ansible.  If not, see <http://www.gnu.org/licenses/>.
"""

DOCUMENTATION = '''
---
module: githooks
short_description: Manages github service hooks.
description:
     - Adds service hooks and removes service hooks that have an error status.
version_added: "1.3.4"
options:
  user:
    description:
      - Github username.
    required: true
  oauthkey:
    description:
      - The oauth key provided by github. It can be found/generated on github under "Edit Your Profile" >> "Applications" >> "Personal Access Tokens"
    required: true
  repo:
    description:
      - "This is the API url for the repository you want to manage hooks for. It should be in the form of: https://api.github.com/repos/user:/repo:. Note this is different than the normal repo url."
    required: true
  hookurl:
    description:
      - When creating a new hook, this is the url that you want github to post to. It is only required when creating a new hook.
    required: false
  action:
    description:
      - This tells the githooks module what you want it to do.
    required: true
    choices: [ "create", "cleanall" ]
author: Phillip Gentry, CX Inc
'''

EXAMPLES = '''
# Example creating a new service hook. It ignores duplicates.
- githooks: action=create hookurl=http://11.111.111.111:2222 user={{ gituser }} oauthkey={{ oauthkey }} repo=https://api.github.com/repos/pcgentry/Github-Auto-Deploy

# Cleaning all hooks for this repo that had an error on the last update. Since this works for all hooks in a repo it is probably best that this would be called from a handler.
- local_action: githooks action=cleanall user={{ gituser }} oauthkey={{ oauthkey }} repo={{ repo }}
'''


def list(hookurl, oauthkey, repo, user):
    url = "%s/hooks" % repo
    auth = base64.encodestring('%s:%s' % (user, oauthkey)).replace('\n', '')
    req = urllib2.Request(url)
    req.add_header("Authorization", "Basic %s" % auth)
    res = urllib2.urlopen(req)
    out = res.read()
    return False, out

def clean504(hookurl, oauthkey, repo, user):
    current_hooks = list(hookurl, oauthkey, repo, user)[1]
    decoded = json.loads(current_hooks)

    for hook in decoded:
        if hook['last_response']['code'] == 504:
            # print "Last response was an ERROR for hook:"
            # print hook['id']
            delete(hookurl, oauthkey, repo, user, hook['id'])
            
    return 0, current_hooks

def cleanall(hookurl, oauthkey, repo, user):
    current_hooks = list(hookurl, oauthkey, repo, user)[1]
    decoded = json.loads(current_hooks)

    for hook in decoded:
        if hook['last_response']['code'] != 200:
            # print "Last response was an ERROR for hook:"
            # print hook['id']
            delete(hookurl, oauthkey, repo, user, hook['id'])
            
    return 0, current_hooks

def create(hookurl, oauthkey, repo, user):
    url = "%s/hooks" % repo
    values = {
        "active": True,
        "name": "web",
        "config": {
            "url": "%s" % hookurl,
            "content_type": "json"
            }
        }
    data = json.dumps(values)
    auth = base64.encodestring('%s:%s' % (user, oauthkey)).replace('\n', '')
    out='[]'
    try :
        req = urllib2.Request(url)
        req.add_data(data)
        req.add_header("Authorization", "Basic %s" % auth)
        res = urllib2.urlopen(req)
        out = res.read()
        return 0, out
    except urllib2.HTTPError, e :
        if e.code == 422 :
            return 0, out

def delete(hookurl, oauthkey, repo, user, hookid):
    url = "%s/hooks/%s" % (repo, hookid)
    auth = base64.encodestring('%s:%s' % (user, oauthkey)).replace('\n', '')
    req = urllib2.Request(url)
    req.get_method = lambda: 'DELETE'
    req.add_header("Authorization", "Basic %s" % auth)
    # req.add_header('Content-Type', 'application/xml') 
    # req.add_header('Accept', 'application/xml')
    res = urllib2.urlopen(req)
    out = res.read()
    return out

def main():
    module = AnsibleModule(
        argument_spec=dict(
        action=dict(required=True),
        hookurl=dict(required=False),
        oauthkey=dict(required=True),
        repo=dict(required=True),
        user=dict(required=True),
        )
    )

    action = module.params['action']
    hookurl = module.params['hookurl']
    oauthkey = module.params['oauthkey']
    repo = module.params['repo']
    user = module.params['user']

    if action == "list":
        (rc, out) = list(hookurl, oauthkey, repo, user)

    if action == "clean504":
        (rc, out) = clean504(hookurl, oauthkey, repo, user)

    if action == "cleanall":
        (rc, out) = cleanall(hookurl, oauthkey, repo, user)

    if action == "create":
        (rc, out) = create(hookurl, oauthkey, repo, user)

    if rc != 0:
        module.fail_json(msg="failed", result=out)

    module.exit_json(msg="success", result=out)


# include magic from lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()