'''
Control jobs in ASE
'''

from logging import getLogger
import os
import shutil

from ...IO import read_input as rin


logger = getLogger('cryspy')

def next_stage_ase(stage, work_path):
    # ---------- skip_flag
    skip_flag = False

    # ---------- rename ASE files at the current stage
    ase_files = ['POSCAR', 'CONTCAR', 'log.tote']
    for f in ase_files:
        if not os.path.isfile(work_path+f):
            logger.error('Not found '+work_path+f)
            raise SystemExit(1)
        os.rename(work_path+f, work_path+'stage{}_'.format(stage)+f)

    # ---------- cp CONTCAR POSCAR
    shutil.copyfile(work_path+'stage{}_CONTCAR'.format(stage),
                    work_path+'POSCAR')

    # ---------- copy the input file from ./calc_in for the next stage
    finfile = './calc_in/'+rin.ase_python+'_{}'.format(stage + 1)
    shutil.copyfile(finfile, work_path+rin.ase_python)

    # ---------- cp INCAR_? from ./calc_in for the next stage: (stage + 1)
    fincar = './calc_in/INCAR_{}'.format(stage + 1)
    shutil.copyfile(fincar, work_path+'INCAR')

    # ---------- return
    return skip_flag


def next_struc_ase(structure, current_id, work_path):
    # ---------- copy files
    calc_inputs = [rin.ase_python]
    for f in calc_inputs:
        ff = f+'_1' if f == rin.ase_python else f
        if not os.path.isfile('./calc_in/' + ff):
            logger.error('Could not find ./calc_in/' + ff)
            raise SystemExit(1)
        # ------ e.g. cp ./calc_in/INCAR_1 work0001/INCAR
        shutil.copyfile('./calc_in/'+ff, work_path+f)

    # ---------- generate POSCAR
    structure.to(fmt='poscar', filename=work_path+'POSCAR')
    if not os.path.isfile(work_path+'POSCAR'):
        logger.error(f'Could not find {work_path}POSCAR')

    # ---------- Change the title of POSCAR
    with open(work_path+'POSCAR', 'r') as f:
        lines = f.readlines()
    lines[0] = 'ID_{}\n'.format(current_id)
    with open(work_path+'POSCAR', 'w') as f:
        for line in lines:
            f.write(line)
