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from .base import BaseTask
from .registry import register_task
from ..util import generic_dataset

@register_task('multi30k')
class Multi30K(BaseTask):
    def get_splits(self, field, root, **kwargs):
        src, trg = ['.' + x for x in self.name.split('.')[1:]]
        return generic_dataset.Multi30k.splits(exts=(src, trg),
                                               fields=field, root=root, **kwargs)


@register_task('iwslt')
class IWSLT(BaseTask):
    def get_splits(self, field, root, **kwargs):
        src, trg = ['.' + x for x in task.split('.')[1:]]
        return generic_dataset.IWSLT.splits(exts=(src, trg),
                                            fields=field, root=root, **kwargs)


@register_task('squad')
class SQuAD(BaseTask):
    def get_splits(self, field, root, **kwargs):
        return generic_dataset.SQuAD.splits(
            fields=field, root=root, description=self.name, **kwargs)


@register_task('wikisql')
class WikiSQL(BaseTask):
    def get_splits(self, field, root, **kwargs):
        return generic_dataset.WikiSQL.splits(
            fields=field, root=root, query_as_question='query_as_question' in self.name, **kwargs)


@register_task('ontonotes')
class OntoNotesNER(BaseTask):
    def get_splits(self, field, root, **kwargs):
        split_task = self.name.split('.')
        _, _, subtask, nones, counting = split_task
        return generic_dataset.OntoNotesNER.splits(
            subtask=subtask, nones=True if nones == 'nones' else False,
            fields=field, root=root, **kwargs)


@register_task('woz')
class WoZ(BaseTask):
    def get_splits(self, field, root, **kwargs):
        return generic_dataset.WOZ.splits(description=self.name,
                                          fields=field, root=root, **kwargs)


@register_task('multinli')
class MultiNLI(BaseTask):
    def get_splits(self, field, root, **kwargs):
        return generic_dataset.MultiNLI.splits(description=self.name,
                                               fields=field, root=root, **kwargs)

@register_task('srl')
class SRL(BaseTask):
    def get_splits(self, field, root, **kwargs):
        return generic_dataset.SRL.splits(fields=field, root=root, **kwargs)


@register_task('snli')
class SNLI(BaseTask):
    def get_splits(self, field, root, **kwargs):
        return generic_dataset.SNLI.splits(fields=field, root=root, **kwargs)


@register_task('schema')
class WinogradSchema(BaseTask):
    def get_splits(self, field, root, **kwargs):
        return generic_dataset.WinogradSchema.splits(fields=field, root=root, **kwargs)


@register_task('cnn')
class CNN(BaseTask):
    def get_splits(self, field, root, **kwargs):
        return generic_dataset.CNN.splits(fields=field, root=root, **kwargs)


@register_task('dailymail')
class DailyMail(BaseTask):
    def get_splits(self, field, root, **kwargs):
        return generic_dataset.DailyMail.splits(fields=field, root=root, **kwargs)


@register_task('cnn_dailymail')
class CNNDailyMail(BaseTask):
    def get_splits(self, field, root, **kwargs):
        split_cnn = generic_dataset.CNN.splits(
            fields=field, root=root, **kwargs)
        split_dm = generic_dataset.DailyMail.splits(
            fields=field, root=root, **kwargs)
        for scnn, sdm in zip(split_cnn, split_dm):
            scnn.examples.extend(sdm)
        return split_cnn


@register_task('sst')
class SST(BaseTask):
    def get_splits(self, field, root, **kwargs):
        return generic_dataset.SST.splits(
            fields=field, root=root, **kwargs)


@register_task('imdb')
class IMDB(BaseTask):
    def get_splits(self, field, root, **kwargs):
        kwargs['validation'] = None
        return generic_dataset.IMDb.splits(fields=field, root=root, **kwargs)


@register_task('zre')
class ZRE(BaseTask):
    def get_splits(self, field, root, **kwargs):
        return generic_dataset.ZeroShotRE.splits(fields=field, root=root, **kwargs)