# coding: utf-8

import numpy as np
from functools import partial
from mypool import MyPool

from postprocessor import PostProcessor


def _map_aux(fun, path, path_out, pp_params, run_num, **kwargs):
    try:
        pp = PostProcessor(
            path + "/" + run_num[0], run_num[1], path_out + "/" + run_num[0], pp_params
        )
    except Exception as e:
        print(e)
        raise
    return fun(pp, **kwargs)


def _map_rule(pp, rule, arg, overwrite, overwrite_dep):
    return pp.process(rule, arg, overwrite, overwrite_dep)


class Aggregator:
    def get_pp_list(self, select=None):

        if select is not None:
            runs, nums = self.selector.select(**select)
        else:
            runs = self.runs
            nums = self.nums
        return [self.pp[run][num] for run in runs for num in nums[run]]

    def map(self, func, select=None, num_process=None, **kwargs):

        pp_list = self.get_pp_list(select)

        if num_process is None:
            num_process = self.pp_params.process.num_process

        if num_process == 1:
            result = [func(pp, **kwargs) for pp in pp_list]
        else:
            run_num = [(pp.run, pp.num) for pp in pp_list]
            map_fn = partial(
                _map_aux, func, self.path, self.path_out, self.pp_params, **kwargs
            )

            pool = MyPool(processes=num_process)
            result = pool.map(map_fn, run_num)
            pool.close()
            pool.join()

        return result

    def _not_self_dep(self, name, dep, dep_arg, overwrite, select):

        result = self.map(
            _map_rule,
            select,
            None,
            rule=dep,
            arg=dep_arg,
            overwrite=overwrite,
            overwrite_dep=overwrite,
        )

        if np.any([res is not None for res in result]):
            self.just_done.append(dep)