# -*- coding: utf-8 -*-
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from __future__ import unicode_literals

from opensearchpy import TransportError
from pytest import raises

from opensearch_dsl import Date, Document, Keyword, MultiSearch, Q, Search, Text
from opensearch_dsl.response import aggs

from .test_data import FLAT_DATA


class Repository(Document):
    created_at = Date()
    description = Text(analyzer="snowball")
    tags = Keyword()

    @classmethod
    def search(cls):
        return super(Repository, cls).search().filter("term", commit_repo="repo")

    class Index:
        name = "git"


class Commit(Document):
    class Index:
        name = "flat-git"


def test_filters_aggregation_buckets_are_accessible(data_client):
    has_tests_query = Q("term", files="test_opensearch_dsl")
    s = Commit.search()[0:0]
    s.aggs.bucket("top_authors", "terms", field="author.name.raw").bucket(
        "has_tests", "filters", filters={"yes": has_tests_query, "no": ~has_tests_query}
    ).metric("lines", "stats", field="stats.lines")
    response = s.execute()

    assert isinstance(
        response.aggregations.top_authors.buckets[0].has_tests.buckets.yes, aggs.Bucket
    )
    assert (
        35
        == response.aggregations.top_authors.buckets[0].has_tests.buckets.yes.doc_count
    )
    assert (
        228
        == response.aggregations.top_authors.buckets[0].has_tests.buckets.yes.lines.max
    )


def test_top_hits_are_wrapped_in_response(data_client):
    s = Commit.search()[0:0]
    s.aggs.bucket("top_authors", "terms", field="author.name.raw").metric(
        "top_commits", "top_hits", size=5
    )
    response = s.execute()

    top_commits = response.aggregations.top_authors.buckets[0].top_commits
    assert isinstance(top_commits, aggs.TopHitsData)
    assert 5 == len(top_commits)

    hits = [h for h in top_commits]
    assert 5 == len(hits)
    assert isinstance(hits[0], Commit)


def test_inner_hits_are_wrapped_in_response(data_client):
    s = Search(index="git")[0:1].query(
        "has_parent", parent_type="repo", inner_hits={}, query=Q("match_all")
    )
    response = s.execute()

    commit = response.hits[0]
    assert isinstance(commit.meta.inner_hits.repo, response.__class__)
    assert repr(commit.meta.inner_hits.repo[0]).startswith(
        "<Hit(git/opensearch-dsl-py): "
    )


def test_scan_respects_doc_types(data_client):
    repos = list(Repository.search().scan())

    assert 1 == len(repos)
    assert isinstance(repos[0], Repository)
    assert repos[0].organization == "opensearch"


def test_scan_iterates_through_all_docs(data_client):
    s = Search(index="flat-git")

    commits = list(s.scan())

    assert 52 == len(commits)
    assert {d["_id"] for d in FLAT_DATA} == {c.meta.id for c in commits}


def test_response_is_cached(data_client):
    s = Repository.search()
    repos = list(s)

    assert hasattr(s, "_response")
    assert s._response.hits == repos


def test_multi_search(data_client):
    s1 = Repository.search()
    s2 = Search(index="flat-git")

    ms = MultiSearch()
    ms = ms.add(s1).add(s2)

    r1, r2 = ms.execute()

    assert 1 == len(r1)
    assert isinstance(r1[0], Repository)
    assert r1._search is s1

    assert 52 == r2.hits.total.value
    assert r2._search is s2


def test_multi_missing(data_client):
    s1 = Repository.search()
    s2 = Search(index="flat-git")
    s3 = Search(index="does_not_exist")

    ms = MultiSearch()
    ms = ms.add(s1).add(s2).add(s3)

    with raises(TransportError):
        ms.execute()

    r1, r2, r3 = ms.execute(raise_on_error=False)

    assert 1 == len(r1)
    assert isinstance(r1[0], Repository)
    assert r1._search is s1

    assert 52 == r2.hits.total.value
    assert r2._search is s2

    assert r3 is None


def test_raw_subfield_can_be_used_in_aggs(data_client):
    s = Search(index="git")[0:0]
    s.aggs.bucket("authors", "terms", field="author.name.raw", size=1)

    r = s.execute()

    authors = r.aggregations.authors
    assert 1 == len(authors)
    assert {"key": "Honza Král", "doc_count": 52} == authors[0]