import tempfile
from datetime import date

import pytest

from iobj.models import ObjectCreate, ObjectType, ObjectUpdate, SearchQuery
from iobj.storage import ObjectStore


@pytest.fixture
def store():
    with tempfile.TemporaryDirectory() as tmp:
        s = ObjectStore(tmp)
        yield s
        s.close()


def _mk(**kwargs) -> ObjectCreate:
    defaults = dict(
        type=ObjectType.RECAP,
        object_date=date(2026, 7, 1),
        project="NordBytes",
        tags=["frontend"],
        title="Test title",
        body="Some body text about BDD tests",
    )
    defaults.update(kwargs)
    return ObjectCreate(**defaults)


def test_create_and_get_roundtrip(store):
    obj = store.create(_mk())
    fetched = store.get(obj.id)
    assert fetched is not None
    assert fetched.id == obj.id
    assert fetched.title == "Test title"
    assert fetched.project == "NordBytes"


def test_get_missing_returns_none(store):
    assert store.get("does-not-exist") is None


def test_shard_file_created_per_month(store):
    store.create(_mk(object_date=date(2026, 1, 15)))
    store.create(_mk(object_date=date(2026, 3, 2)))
    shard_files = sorted(p.name for p in store.data_dir.glob("*.json"))
    assert shard_files == ["2026-01.json", "2026-03.json"]


def test_update_changes_fields(store):
    obj = store.create(_mk())
    updated = store.update(obj.id, ObjectUpdate(title="New title", tags=["backend"]))
    assert updated.title == "New title"
    assert updated.tags == ["backend"]
    assert updated.body == obj.body  # untouched field preserved


def test_update_moves_shard_when_date_changes(store):
    obj = store.create(_mk(object_date=date(2026, 1, 1)))
    store.update(obj.id, ObjectUpdate(object_date=date(2026, 6, 1)))
    shard_files = sorted(p.name for p in store.data_dir.glob("*.json"))
    assert "2026-06.json" in shard_files
    moved = store.get(obj.id)
    assert moved.object_date == date(2026, 6, 1)


def test_update_missing_returns_none(store):
    assert store.update("nope", ObjectUpdate(title="x")) is None


def test_delete_removes_object(store):
    obj = store.create(_mk())
    assert store.delete(obj.id) is True
    assert store.get(obj.id) is None


def test_delete_missing_returns_false(store):
    assert store.delete("nope") is False


def test_search_filters_by_type(store):
    store.create(_mk(type=ObjectType.RECAP))
    store.create(_mk(type=ObjectType.GIT_COMMIT, title="commit one"))
    results = store.search(SearchQuery(type=ObjectType.GIT_COMMIT))
    assert len(results) == 1
    assert results[0].title == "commit one"


def test_search_filters_by_project_case_insensitive(store):
    store.create(_mk(project="NordBytes"))
    store.create(_mk(project="Egmont"))
    results = store.search(SearchQuery(project="nordbytes"))
    assert len(results) == 1
    assert results[0].project == "NordBytes"


def test_search_filters_by_tag(store):
    store.create(_mk(tags=["frontend", "bdd"]))
    store.create(_mk(tags=["backend"]))
    results = store.search(SearchQuery(tag="bdd"))
    assert len(results) == 1


def test_search_filters_by_date_range(store):
    store.create(_mk(object_date=date(2026, 1, 5), title="jan"))
    store.create(_mk(object_date=date(2026, 6, 5), title="jun"))
    store.create(_mk(object_date=date(2026, 12, 5), title="dec"))
    results = store.search(SearchQuery(date_from=date(2026, 2, 1), date_to=date(2026, 7, 1)))
    assert len(results) == 1
    assert results[0].title == "jun"


def test_search_free_text_matches_title_and_body(store):
    store.create(_mk(title="BDD patterns", body="irrelevant"))
    store.create(_mk(title="irrelevant", body="mentions BDD somewhere"))
    store.create(_mk(title="nothing", body="nothing"))
    results = store.search(SearchQuery(q="bdd"))
    assert len(results) == 2


def test_search_respects_limit_and_offset_and_sort_order(store):
    for i in range(5):
        store.create(_mk(object_date=date(2026, 1, 1 + i), title=f"obj{i}"))
    all_results = store.search(SearchQuery(limit=100))
    assert [r.title for r in all_results] == ["obj4", "obj3", "obj2", "obj1", "obj0"]

    page = store.search(SearchQuery(limit=2, offset=1))
    assert [r.title for r in page] == ["obj3", "obj2"]


def test_search_combines_multiple_filters(store):
    store.create(_mk(project="NordBytes", tags=["bdd"], title="match", object_date=date(2026, 5, 5)))
    store.create(_mk(project="NordBytes", tags=["other"], title="no-tag-match", object_date=date(2026, 5, 5)))
    store.create(_mk(project="Egmont", tags=["bdd"], title="wrong-project", object_date=date(2026, 5, 5)))
    results = store.search(SearchQuery(project="NordBytes", tag="bdd"))
    assert len(results) == 1
    assert results[0].title == "match"


def test_search_no_shards_returns_empty(store):
    assert store.search(SearchQuery()) == []