from json import dumps

defaults = {
    'apt': {
        'repos': {
            'matrix': {
                'items': {
                    'deb https://packages.matrix.org/{os} {os_release} main',
                },
            },
        },
        'packages': {
            'matrix-synapse-py3': {},
        },
    },
    'backups': {
        'paths': {
            '/var/lib/matrix-synapse',
        },
    },
    'icinga2_api': {
        'matrix-synapse': {
            'services': {
                'MATRIX-SYNAPSE PROCESS': {
                    'command_on_monitored_host': '/usr/lib/nagios/plugins/check_procs -a synapse.app.homeserver -c 1:',
                    'vars.notification.sms': True,
                },
            },
        },
    },
    'matrix-synapse': {
        'registration_shared_secret': repo.vault.human_password_for('{} matrix-synapse registration_shared_secret'.format(node.name)),
        'database': {
            'user': 'synapse_user',
            'password': repo.vault.password_for('{} postgresql synapse_user'.format(node.name)),
            'database': 'synapse',
        },
        'appservice_configs': set(),
    },
    'postgresql': {
        'roles': {
            'synapse_user': {
                'password': repo.vault.password_for('{} postgresql synapse_user'.format(node.name)),
            },
        },
        'databases': {
            'synapse': {
                'owner': 'synapse_user',
                'when_creating': {
                    'collation': 'C',
                    'ctype': 'C',
                },
            },
        },
    },
    'zfs': {
        'datasets': {
            'tank/matrix-synapse': {
                'mountpoint': '/var/lib/matrix-synapse',
                'needed_by': {
                    'pkg_apt:matrix-synapse-py3',
                },
            },
        },
    },
}


@metadata_reactor.provides(
    'nginx/vhosts',
)
def nginx(metadata):
    if not node.has_bundle('nginx'):
        raise DoNotRunAgain

    wellknown = {
        '/.well-known/matrix/client': {
            'return': dumps({
                'm.homeserver': {
                    'base_url': 'https://{}'.format(metadata.get('matrix-synapse/baseurl')),
                },
                'm.identity_server': {
                    'base_url': metadata.get('matrix-synapse/identity_server', 'https://matrix.org'),
                },
                **metadata.get('matrix-synapse/additional_client_config', {}),
            }, sort_keys=True),
            'additional_config': {
                'default_type application/json',
                'add_header Access-Control-Allow-Origin *',
            },
        },
        '/.well-known/matrix/server': {
            'return': dumps({
                'm.server':  '{}:443'.format(metadata.get('matrix-synapse/baseurl')),
            }, sort_keys=True),
            'additional_config': {
                'default_type application/json',
                'add_header Access-Control-Allow-Origin *',
            },
        },
    }

    locations = {
        '/_matrix': {
            'target': 'http://[::1]:20080',
        },
        '/_synapse': {
            'target': 'http://[::1]:20080',
        },
        **wellknown,
    }

    if node.has_bundle('matrix-media-repo'):
        locations['/_matrix/media'] = {
            'target': 'http://localhost:20090',
            'max_body_size': '{}M'.format(metadata.get('matrix-media-repo/upload_max_mb')),
            # matrix-media-repo needs this to be the
            # homeserver address.
            'x_forwarded_host': metadata.get('matrix-synapse/server_name'),
        }

    vhosts = {
        'matrix-synapse': {
            'domain': metadata.get('matrix-synapse/baseurl'),
            'locations': locations,
            'website_check_path': '/_matrix/static/',
            'website_check_string': 'Synapse is running',
        },
    }

    for vname in metadata.get('matrix-synapse/wellknown_also_on_vhosts', set()):
        vhosts[vname] = {
            'locations': wellknown,
        }

    return {
        'nginx': {
            'vhosts': vhosts
        },
    }