import datetime

import db.types

import db.pool

import db.cache

import page.root

import page.error

import action.actions

import session

from repoproxy import RepoProxy

from repotypes.git import RepotypeGit

class Server:

  def __init__(self, config):

    self.repotypes = {

      'git': RepotypeGit() }

    self.config = self.apply_defaults(config)

    self.check_config(self.config)

    self.dbtypebytype = db.types.bytype

    self.dbtypebychar = db.types.bychar

    self.dbpool = db.pool.Pool(self)

    self.dbcache = db.cache.Cache(self)

    self.sessions = session.SessionManager(self)

    self.repoproxy = RepoProxy(self)

    self.pageroot      = page.root.RootPage()

    self.pageforbidden = page.error.ErrorPage('403', 'Forbidden')

    self.pagenotfound  = page.error.ErrorPage('404', 'Not Found')

    self.actions = action.actions.actions

    for key, repotype in self.repotypes.items():

      repotype.configure(self, self.config['repositories'][key])

  def get_defaults(self):

    return self.apply_defaults(dict())

  def apply_defaults(self, config):

    config_db = config.get('db', dict())

    config_db_pool = config_db.get('pool', dict())

    config_db_cache = config_db.get('cache', dict())

    config_users = config.get('users', dict())

    config_session = config.get('session', dict())

    config_repositories = config.get('repositories', dict())

    config_repositories_git = config_repositories.get('git', dict())

    urlprefix = self.fixpath( config.get('urlprefix', '') )

    return {

      'protocol'      : str(config.get('protocol', 'https://')),

      'domain'        : str(config.get('domain', '')),

      'name'          : str(config.get('name', 'Earthworm')),

      'debug'         : bool(config.get('debug')),

      'urlprefix'     : urlprefix,

      'urldataprefix' : str(config.get('urldataprefix', urlprefix + '/data')),

      'db': {

        'connection'  : dict(config_db.get('connection', dict())),

        'prefix'      : str(config_db.get('prefix', '')),

        'retrytime'   : float(config_db.get('retrytime', 0)),

        'pool': {

          'read'      : int(config_db_pool.get('read' , 10)),

          'write'     : int(config_db_pool.get('write', 10)),

        },

        'cache': {

          'maxcount'  : int(config_db_cache.get('maxcount', 10000)),

        },

      },

      'users': {

        'salt'        : str(config_users.get('salt', 'ndina82899nda90pn0al')),

        'selfcreate'  : bool(config_users.get('selfcreate', False)),

        'selfdelete'  : bool(config_users.get('selfdelete', False)),

        'showlist'    : bool(config_users.get('showlist', False)),

        'showprofile' : bool(config_users.get('showprofile', True)),

      },

      'session': {

        'time'        : float(config_session.get('time', 30*60))

      },

      'repositories': {

        'git': {

          'internalurl' : str(config_repositories_git.get('internalurl', '')),

          'path'        : str(config_repositories_git.get('path', '')),

          'command'     : str(config_repositories_git.get('command', '/usr/bin/git')),

          'environment' : config_repositories_git.get('environment', dict()),

        },

      },

    }

  def check_config(self, config):

    assert config['protocol'] == 'http://' \

        or config['protocol'] == 'https://'

    assert config['db']['retrytime'] >= 0

    assert config['db']['prefix'] == '' \

        or config['db']['prefix'].isidentifier()

    assert config['db']['pool']['read']  > 0

    assert config['db']['pool']['write'] > 0

    assert config['db']['cache']['maxcount'] > 0

    assert config['session']['time'] > 0

    for i in config['domain'].split('.'):

      assert i.isidentifier()

    config['urlprefix'] = self.fixpath(config['urlprefix'])

    config['urldataprefix'] = self.fixpath(config['urldataprefix'])

    for key, repotype in self.repotypes.items():

      repotype.check_config(self, config['repositories'][key])

  def fixpath(self, path, root = False):

    assert type(path) is str

    while path and path[-1] == '/':

      del path[-1]

    if path != '':

      assert path[0] == '/'

      for i in path[1:].split('/'):

        assert i.isalnum()

    if root:

      assert path and path[0] == '/'

    return path

  def fixenv(self, environment):

    assert type(environment) is dict

    for k, v in environment:

      assert type(k) is str and k.isidentifier()

      assert type(v) is str

    return environment