import os
import json
import subprocess

from bec_lib.core.file_utils import FileWriterMixin
#from bec_lib.core.bec_service import SERVICE_CONFIG


class csaxs_archiver:
    """Class to archive data from a beamtime.
    To run this script from a shell, go to discovery.psi.ch and copy your token.
    Afterwards, get a Keberos token (kinit) for yourself in the shell.
    Activate the bec_venv by doing "source bec_venv/bin/activate" and then run this code via  python $filename.
    As a last step, adjust the dictionary below in if __name__ == '__main__' with your token as well as information about the experiment
    """

    def __init__(
        self,
        start_scan: int,
        stop_scan: int,
        base_path: str,
        log_path: str,
        eacc: str,
        pi: str,
        pi_email: str,
        token: str,
        type: str = "raw",
        overwrite: bool = False,
        online: bool = True,
    ):
        self.start_scan = start_scan
        self.stop_scan = stop_scan
        self.log_path = os.path.expanduser(log_path)
        self.eacc = eacc
        self.pi = pi
        self.pi_email = pi_email
        self.token = token
        self.type = type
        self.overwrite = overwrite
        self.online = online

        #from bec_lib.core.bec_service import SERVICE_CONFIG
        #SERVICE_CONFIG.config["service_config"]["file_writer"]
        self._load_datacatalogue_module()
        self._create_directory(base_path)

        self.service_cfg = {'base_path' : f'{self.base_path}'}
        
        self.file_writer = FileWriterMixin(self.service_cfg)

        

    def _create_directory(self, base_path: str) -> None:
        if self.online:
            self.base_path = os.path.expanduser("~/Data10")
        else:
            self.base_path = base_path

        if not os.path.exists(self.log_path):
            os.makedirs(self.log_path)

    def _load_datacatalogue_module(self):
        command = 'module add datacatalog/1.1.9'
        os.popen(command)
        # result = subprocess.run(
        #     command,
        #     shell=False,
        #     stdout=subprocess.PIPE,
        #     stderr=subprocess.PIPE,
        #     universal_newlines=True,
        # )
        # if result.returncode == 0:
        #     print(f"Command {command} was succesful")
        # else:
        #     print(f"Failed to run command {command} with return message {result.returncode}")

    def prep_metadata(self, scannr: int) -> dict:
        user_metadata = {}
        user_metadata.update(
            {
                "principalInvestigator": self.pi_email,
                "owner": self.pi,
                "ownerEmail": self.pi_email,
                "sourceFolder": self.base_path,
                "creationLocation": "/PSI/SLS/CSAXS",
                "type": "raw",
                "ownerGroup": f"p{self.eacc.strip('e')}",
                "datasetName": f"S{scannr:05d}",
            }
        )
        return user_metadata

    def _write_ingestion_log(self, scannr: int) -> None:
        ...

    def run_for_all_scans(self):
        for scan in range(self.start_scan, self.stop_scan + 1):
            print(f"Start ingestion for scan {scan}")
            fname = os.path.join(os.path.expanduser(self.log_path), f"ingestion_log_S{scan:05d}")
            self.datafile_name = f"{fname}.txt"
            if os.path.isfile(self.datafile_name) and not self.overwrite == True:
                print(
                    f"Skipping scan {scan}, already ingested due to logs, moving on to next scan {scan+1}"
                )
                continue

            user_metadata = self.prep_metadata(scan)

            # Write metadata file in json file
            self.metadata_file = f"{fname}.json"
            with open(self.metadata_file, "w") as file:
                json.dump(user_metadata, file)

            # Compile datapath based on structure a cSAXS
            datadir_path = os.path.join('data', self.file_writer.get_scan_directory(scan, 1000, 5))
            print(f"Archiving directory {datadir_path}")
            if not os.path.isdir(os.path.join(self.base_path, datadir_path)):
                print(f"Did not find directory {datadir_path}, skipping scan {scan}")
                continue

            # Create datafile path for archiving
            with open(self.datafile_name, "w") as file:
                file.write(datadir_path)

            print(f"Starting ingestion for S#{scan}")
            command = f'datasetIngestor -allowexistingsource -ingest -autoarchive -noninteractive -token {self.token} {self.metadata_file} {self.datafile_name}'
            rtr = os.popen(command)

            #with open(os.path.join(fname,'_log.txt'), "w") as file:
            #    print(f'Writing reponse to file')
            #    file.write(rtr.read())
            # result = subprocess.run(command, shell=False, stdout = subprocess.PIPE, stderr = subprocess.PIPE, universal_newlines=True)
            # if result.returncode == 0:
            #     print(f"Command {command} was succesful")
            # else:
            #     print(f"Failed to run command {command} with return message {result.returncode}")


if __name__ == "__main__":
    # Generate dictionary with user input.
    user_input = {
        "base_path": "~/Data10",
        "eacc": "e20643",
        "pi": "Marianne Liebi",
        "pi_email": "marianne.liebi@psi.ch",
        'log_path' : '~/Data10/documentation/ingestion_logs/'
    }
    archiver = csaxs_archiver(start_scan=1, stop_scan=349, token='', **user_input)
    archiver.run_for_all_scans()