# SPDX-License-Identifier: Apache-2.0
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# this file be licensed under the Apache-2.0 license or a
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# 	http://www.apache.org/licenses/LICENSE-2.0
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from ..utils import AttrDict, AttrList
from . import AggResponse, Response


class Bucket(AggResponse):
    def __init__(self, aggs, search, data, field=None):
        super(Bucket, self).__init__(aggs, search, data)


class FieldBucket(Bucket):
    def __init__(self, aggs, search, data, field=None):
        if field:
            data["key"] = field.deserialize(data["key"])
        super(FieldBucket, self).__init__(aggs, search, data, field)


class BucketData(AggResponse):
    _bucket_class = Bucket

    def _wrap_bucket(self, data):
        return self._bucket_class(
            self._meta["aggs"],
            self._meta["search"],
            data,
            field=self._meta.get("field"),
        )

    def __iter__(self):
        return iter(self.buckets)

    def __len__(self):
        return len(self.buckets)

    def __getitem__(self, key):
        if isinstance(key, (int, slice)):
            return self.buckets[key]
        return super(BucketData, self).__getitem__(key)

    @property
    def buckets(self):
        if not hasattr(self, "_buckets"):
            field = getattr(self._meta["aggs"], "field", None)
            if field:
                self._meta["field"] = self._meta["search"]._resolve_field(field)
            bs = self._d_["buckets"]
            if isinstance(bs, list):
                bs = AttrList(bs, obj_wrapper=self._wrap_bucket)
            else:
                bs = AttrDict({k: self._wrap_bucket(bs[k]) for k in bs})
            super(AttrDict, self).__setattr__("_buckets", bs)
        return self._buckets


class FieldBucketData(BucketData):
    _bucket_class = FieldBucket


class TopHitsData(Response):
    def __init__(self, agg, search, data):
        super(AttrDict, self).__setattr__(
            "meta", AttrDict({"agg": agg, "search": search})
        )
        super(TopHitsData, self).__init__(search, data)