import argparse
import os
import shutil
import subprocess
import configparser

"""
Dieses Programm:
- Kopiert die CSV-Datei mit allen RuleDesigner-Nummern 
- Fragt Sivas ab und generiert dabei eine json-Datei, in der alle Teilenummern aufgelistet sind,
  die in Verbindung mit einer angegebenen Teilenummer migriert werden müssen.
"""
def get_blacklist(outdir):
    """read out list of sivas Ids which are not allowed from network drive
    '//ruledesigner//DF_Daten//onfigurator//ustomVaulting//RP_BOM.ini'
    within the section 'Settings' 
    in the key 'PartNumbersToDrop'
    """
    blacklist_net_share = os.environ.get("BLACKLIST_DATABASE_SOURCE")
    blacklist_ini_filename = os.environ.get("BLACKLIST_DATABASE_NAME")
    blacklist_source_path = os.path.join(blacklist_net_share, blacklist_ini_filename)
    config = configparser.RawConfigParser()
    try:
        config.read(blacklist_source_path)
    except configparser.DuplicateOptionError:
        pass
    content = config.get('Settings','PartNumbersToDrop')
    blacklist_str = content[0]   # warum das als Liste erkannt wird wissen die Götter...
    if len(blacklist_str) == 0 or len(content) == 0:
        print(f"import of '{blacklist_ini_filename}' from '{blacklist_net_share}' failed")
        exit

    blacklist = blacklist_str.split(';')

    outfile = os.path.join(outdir, 'blacklist.txt')
    with open(outfile, 'w', encoding='utf-8') as fh:
        fh.write('\n'.join(blacklist))

def get_rd_dbase(out_dir):

    rd_csv_source_dir = os.environ.get("RD_DATABASE_SOURCE")
    rd_csv_filename = os.environ.get("RD_DATABASE_NAME")
    csv_source_path = os.path.join(rd_csv_source_dir, rd_csv_filename)

    if os.path.isfile(csv_source_path):
        csv_destiny_path = os.path.join(out_dir, rd_csv_filename)

        if os.path.isdir(out_dir):
            print("Copying CSV-file of RuleDesigner database...")
            shutil.copyfile(csv_source_path, csv_destiny_path)
            print("done")
        else:
            print(f"Can't copy RuleDesigner-database, because output directory ${out_dir} doesn't exist. Check path of %CREMIG_DATA% in cremig_setenv.bat")
    else:
        print(f"no such file ${rd_csv_source_dir} of environment variable RD_DATABASE_SOURCE. Check cremig_setenv.bat")


def get_sivas_dbase(sivas_id, out_dir):
    sivas_exe_path = os.environ.get('SIVAS_DATABASE_QUERY')

    if os.path.isfile(sivas_exe_path):
        
        if os.path.isdir(out_dir):
            print(f"Attempting to generate a json-file of all parts to be migrated in relation with '{sivas_id}'")
            subprocess.run(f"{sivas_exe_path} -o {out_dir} --format json -number {sivas_id}")
            
            if os.path.isfile(os.path.join(out_dir, sivas_id + ".json")):
                print("done")
            else:
                print(f"Failure - Couldn't generate {sivas_id}.json. Check for any spelling/typing errors. Otherwise given number is a part without a BOM.")
                exit()
        else:
            print(f"'Output directory for .json-file {out_dir}' doesn't exist.")
    else:
        print(f"Can't execute SIVAS-database query. Check if you have established a VPN connection to the company's network and check the path of %SIVAS_DATABASE_QUERY% in cremig_setenv.bat")


if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='fetches data from sivas or ruledesigner fusion', prog='update_database')
    parser.add_argument('-s', '--sivas', action='store', help='fetch data of this id from sivas fo local database folder', metavar='id')
    parser.add_argument('-r', '--rd', action='store_true', help='fetch list of existing parts from network drive')
    parser.add_argument('-b', '--blacklist', action='store_true', help='fetch list of not allowed parts from network drive')

    args = parser.parse_args()

    out_dir = os.environ.get('CREMIG_DATA')

    if args.rd:
        get_rd_dbase(out_dir)

    elif args.sivas:
        get_sivas_dbase(args.sivas, out_dir)

    elif args.blacklist:
        get_blacklist(out_dir)

    else:
        parser.print_help()