from agent import WORKINGDIR, logger, VRWLDAP
from dotenv import dotenv_values
import json
from pathlib import Path

EXPORT_PATH = Path(f'{WORKINGDIR}/export/')

if __name__ == "__main__":
    config_path = f'{WORKINGDIR}/.env'
    if not Path(config_path).exists():
        print('Missing .env file with credentials. Terminate!')
        quit()

    config = dotenv_values(config_path)

    print('Logging into LDAP server')

    # Load LDAP client
    ldap_client = VRWLDAP(config['LDAP_HOST'], int(config['LDAP_PORT']), config['LDAP_USER'], config['LDAP_PASS'], config['LDAP_SSL'], not config['LDAP_MANUAL_GROUPS'])
    if not ldap_client.check_connection():
        logger.error(f'Could not login to the LDAP server. Check connection credentials.')
        quit()

    print('Start exporting researcher and study data')

    # Get the data from the LDAP server
    (researchers, studies) = ldap_client.export()

    # convert study dict to list. Is less data and easier for the import later on.
    studies_list = []
    for study_data in studies.values():
        contributor_list = []
        for contributor in study_data['contributors'].values():
            contributor_list.append(contributor)

        study_data['contributors'] = contributor_list
        studies_list.append(study_data)

    # Make sure the export folder does exists
    if not EXPORT_PATH.exists():
        EXPORT_PATH.mkdir()

    # Clear old export
    for file in EXPORT_PATH.iterdir():
        file.unlink()

    data = {
        'researchers': researchers,
        'studies': studies_list,
    }

    for data_name, data_set in data.items():
        json_data = json.dumps(data_set, indent=2)

        # Write data to file
        export_file = Path(f'{EXPORT_PATH}/{data_name}.json')
        export_file.write_text(json_data)
        print(f'Exported {data_name} data to json file: {export_file}')

    print('Done exporting VRW LDAP data')