import glob
import os
import shutil
import warnings
from multiprocessing import Pool

from monty.serialization import dumpfn
from packaging.version import Version

import dpgen.auto_test.lib.abacus as abacus
import dpgen.auto_test.lib.crys as crys
import dpgen.auto_test.lib.util as util
from dpgen import dlog
from dpgen.auto_test.calculator import make_calculator
from dpgen.auto_test.lib.utils import create_path
from dpgen.auto_test.mpdb import get_structure
from dpgen.dispatcher.Dispatcher import make_submission
from dpgen.remote.decide_machine import convert_mdata

lammps_task_type = ["deepmd", "meam", "eam_fs", "eam_alloy"]


def make_equi(confs, inter_param, relax_param):
    # find all POSCARs and their name like mp-xxx
    # ...
    dlog.debug("debug info make equi")
    if "type_map" in inter_param:
        ele_list = [key for key in inter_param["type_map"].keys()]
    else:
        ele_list = [key for key in inter_param["potcars"].keys()]
    # ele_list = inter_param['type_map']
    dlog.debug("ele_list %s" % ":".join(ele_list))
    conf_dirs = []
    for conf in confs:
        conf_dirs.extend(glob.glob(conf))
    conf_dirs.sort()

    # generate a list of task names like mp-xxx/relaxation/relax_task
    # ...
    cwd = os.getcwd()
    # generate poscar for single element crystal
    if len(ele_list) == 1 or "single" in inter_param:
        if "single" in inter_param:
            element_label = int(inter_param["single"])
        else:
            element_label = 0
        for ii in conf_dirs:
            os.chdir(ii)
            crys_type = ii.split("/")[-1]
            dlog.debug("crys_type: %s" % crys_type)
            dlog.debug("pwd: %s" % os.getcwd())
            if crys_type == "std-fcc":
                if not os.path.exists("POSCAR"):
                    crys.fcc1(ele_list[element_label]).to("POSCAR", "POSCAR")
            elif crys_type == "std-hcp":
                if not os.path.exists("POSCAR"):
                    crys.hcp(ele_list[element_label]).to("POSCAR", "POSCAR")
            elif crys_type == "std-dhcp":
                if not os.path.exists("POSCAR"):
                    crys.dhcp(ele_list[element_label]).to("POSCAR", "POSCAR")
            elif crys_type == "std-bcc":
                if not os.path.exists("POSCAR"):
                    crys.bcc(ele_list[element_label]).to("POSCAR", "POSCAR")
            elif crys_type == "std-diamond":
                if not os.path.exists("POSCAR"):
                    crys.diamond(ele_list[element_label]).to("POSCAR", "POSCAR")
            elif crys_type == "std-sc":
                if not os.path.exists("POSCAR"):
                    crys.sc(ele_list[element_label]).to("POSCAR", "POSCAR")

            if inter_param["type"] == "abacus" and not os.path.exists("STRU"):
                abacus.poscar2stru("POSCAR", inter_param, "STRU")
                os.remove("POSCAR")

            os.chdir(cwd)
    task_dirs = []
    # make task directories like mp-xxx/relaxation/relax_task
    # if mp-xxx/exists then print a warning and exit.
    # ...
    for ii in conf_dirs:
        crys_type = ii.split("/")[-1]
        dlog.debug("crys_type: %s" % crys_type)

        if "mp-" in crys_type and not os.path.exists(os.path.join(ii, "POSCAR")):
            get_structure(crys_type).to("POSCAR", os.path.join(ii, "POSCAR"))
            if inter_param["type"] == "abacus" and not os.path.exists("STRU"):
                abacus.poscar2stru(
                    os.path.join(ii, "POSCAR"), inter_param, os.path.join(ii, "STRU")
                )
                os.remove(os.path.join(ii, "POSCAR"))

        poscar = os.path.abspath(os.path.join(ii, "POSCAR"))
        POSCAR = "POSCAR"
        if inter_param["type"] == "abacus":
            shutil.copyfile(os.path.join(ii, "STRU"), os.path.join(ii, "STRU.bk"))
            abacus.modify_stru_path(os.path.join(ii, "STRU"), "pp_orb/")
            poscar = os.path.abspath(os.path.join(ii, "STRU"))
            POSCAR = "STRU"
        if not os.path.exists(poscar):
            raise FileNotFoundError("no configuration for autotest")
        if os.path.exists(os.path.join(ii, "relaxation", "jr.json")):
            os.remove(os.path.join(ii, "relaxation", "jr.json"))

        relax_dirs = os.path.abspath(
            os.path.join(ii, "relaxation", "relax_task")
        )  # to be consistent with property in make dispatcher
        create_path(relax_dirs)
        task_dirs.append(relax_dirs)
        os.chdir(relax_dirs)
        # copy POSCARs to mp-xxx/relaxation/relax_task
        # ...
        if os.path.isfile(POSCAR):
            os.remove(POSCAR)
        os.symlink(os.path.relpath(poscar), POSCAR)
        os.chdir(cwd)
    task_dirs.sort()
    # generate task files
    relax_param["cal_type"] = "relaxation"
    if "cal_setting" not in relax_param:
        relax_param["cal_setting"] = {
            "relax_pos": True,
            "relax_shape": True,
            "relax_vol": True,
        }
    else:
        if "relax_pos" not in relax_param["cal_setting"]:
            relax_param["cal_setting"]["relax_pos"] = True
        if "relax_shape" not in relax_param["cal_setting"]:
            relax_param["cal_setting"]["relax_shape"] = True
        if "relax_vol" not in relax_param["cal_setting"]:
            relax_param["cal_setting"]["relax_vol"] = True

    for ii in task_dirs:
        poscar = os.path.join(ii, "POSCAR")
        dlog.debug("task_dir %s" % ii)
        inter = make_calculator(inter_param, poscar)
        inter.make_potential_files(ii)
        inter.make_input_file(ii, "relaxation", relax_param)


def run_equi(confs, inter_param, mdata):
    # find all POSCARs and their name like mp-xxx
    # ...
    conf_dirs = []
    for conf in confs:
        conf_dirs.extend(glob.glob(conf))
    conf_dirs.sort()

    processes = len(conf_dirs)

    # generate a list of task names like mp-xxx/relaxation/relax_task
    # ...
    work_path_list = []
    for ii in conf_dirs:
        work_path_list.append(os.path.join(ii, "relaxation"))
    all_task = []
    for ii in work_path_list:
        all_task.append(os.path.join(ii, "relax_task"))
    run_tasks = all_task
    inter_type = inter_param["type"]
    # vasp
    if inter_type in ["vasp", "abacus"]:
        mdata = convert_mdata(mdata, ["fp"])
    elif inter_type in lammps_task_type:
        mdata = convert_mdata(mdata, ["model_devi"])
    else:
        raise RuntimeError("unknown task %s, something wrong" % inter_type)

    # dispatch the tasks
    # POSCAR here is useless
    virtual_calculator = make_calculator(inter_param, "POSCAR")
    forward_files = virtual_calculator.forward_files()
    forward_common_files = virtual_calculator.forward_common_files()
    backward_files = virtual_calculator.backward_files()
    #    backward_files += logs
    machine, resources, command, group_size = util.get_machine_info(mdata, inter_type)
    work_path = os.getcwd()
    print("%s --> Runing... " % (work_path))

    api_version = mdata.get("api_version", "1.0")
    if Version(api_version) < Version("1.0"):
        raise RuntimeError(
            "API version %s has been removed. Please upgrade to 1.0." % api_version
        )
    elif Version(api_version) >= Version("1.0"):

        submission = make_submission(
            mdata_machine=machine,
            mdata_resources=resources,
            commands=[command],
            work_path=work_path,
            run_tasks=run_tasks,
            group_size=group_size,
            forward_common_files=forward_common_files,
            forward_files=forward_files,
            backward_files=backward_files,
            outlog="outlog",
            errlog="errlog",
        )
        submission.run_submission()


def post_equi(confs, inter_param):
    # find all POSCARs and their name like mp-xxx
    # ...
    conf_dirs = []
    for conf in confs:
        conf_dirs.extend(glob.glob(conf))
    conf_dirs.sort()
    task_dirs = []
    for ii in conf_dirs:
        task_dirs.append(os.path.abspath(os.path.join(ii, "relaxation", "relax_task")))
    task_dirs.sort()

    # generate a list of task names like mp-xxx/relaxation
    # ...

    # dump the relaxation result.
    for ii in task_dirs:
        poscar = os.path.join(ii, "POSCAR")
        inter = make_calculator(inter_param, poscar)
        res = inter.compute(ii)
        dumpfn(res, os.path.join(ii, "result.json"), indent=4)
