import logging

from flask import request, make_response, jsonify, abort
from flask.ext.login import login_required, current_user
from functools import wraps

from data import model
from app import app
from util.names import parse_repository_name
from auth.permissions import (ReadRepositoryPermission,
                              ModifyRepositoryPermission,
                              AdministerRepositoryPermission)


logger = logging.getLogger(__name__)


@app.route('/api/')
def welcome():
  return make_response('welcome', 200)


@app.route('/api/user/')
@login_required
def get_logged_in_user():
  user = current_user.db_user
  return jsonify({
    'verified': user.verified,
    'anonymous': False,
    'username': user.username,
    'email': user.email,
  })


@app.route('/api/repository/', methods=['POST'])
@login_required
def create_repo_api():
  pass



@app.route('/api/repository/', methods=['GET'])
@login_required
def list_repos_api():
  def repo_view(repo_perm):
    return {
      'namespace': repo_perm.repository.namespace,
      'name': repo_perm.repository.name,
      'role': repo_perm.role.name,
    }

  repos = [repo_view(repo)
           for repo in model.get_user_repositories(current_user.db_user)]
  response = {
    'repositories': repos
  }

  return jsonify(response)


@app.route('/api/repository/<path:repository>', methods=['PUT'])
@login_required
@parse_repository_name
def update_repo_api(namespace, repository):
  permission = ModifyRepositoryPermission(namespace, repository)
  if permission.can(): 
    repo = model.get_repository(namespace, repository)
    if repo:
      values = request.get_json()
      repo.description = values['description']
      repo.save()
      return jsonify({
          'success': True
      })
      
  abort(404)


@app.route('/api/repository/<path:repository>', methods=['GET'])
@login_required
@parse_repository_name
def get_repo_api(namespace, repository):
  def image_view(image):
    return {
      'id': image.image_id,
      'created': image.created,
      'comment': image.comment,
    }

  def tag_view(tag):
    image = model.get_tag_image(namespace, repository, tag.name)
    if not image:
      return {}

    return {
      'name': tag.name,
      'image': image_view(image),
    }

  permission = ReadRepositoryPermission(namespace, repository)
  if permission.can(): 
    repo = model.get_repository(namespace, repository)
    if repo:
      tags = model.list_repository_tags(namespace, repository)
      tag_dict = {tag.name: tag_view(tag) for tag in tags}
      can_write = ModifyRepositoryPermission(namespace, repository).can()
      return jsonify({
        'namespace': namespace,
        'name': repository,
        'description': repo.description,
        'tags': tag_dict,
        'can_write': can_write,
      })

    abort(404)  # Not fount
  abort(403)  # Permission denied


@app.route('/api/repository/<path:repository>/permissions/', methods=['GET'])
@login_required
@parse_repository_name
def list_repo_permissions(namespace, repository):
  permission = AdministerRepositoryPermission(namespace, repository)
  if permission.can():
    repo_perms = model.get_all_repo_users(namespace, repository)

    return jsonify({
      'permissions': {repo_perm.user.username: repo_perm.role.name 
                      for repo_perm in repo_perms}
    })

  abort(403)  # Permission denied

@app.route('/api/repository/<path:repository>/permissions/<username>',
           methods=['PUT'])
@login_required
@parse_repository_name
def change_permissions(namespace, repository, username):
  permission = AdministerRepositoryPermission(namespace, repository)
  if permission.can():
    new_permission = request.get_json()

    return jsonify({
      'setting_permission_to': [permission_view(repo_perm) for repo_perm in repo_perms]
    })

  abort(403)  # Permission denied