# retoor <retoor@molodetz.nl>

from collections import Counter
from itertools import islice

import pytest

from devplacepy.database import get_table, init_db
from devplacepy.database.sync import claim_identity
from devplacepy.services.sync.batch import BatchRunner
from devplacepy.services.sync.handles import HandleBuilder
from devplacepy.services.sync.records import SyncBatchForm
from devplacepy.services.sync.spec import HANDLES
from devplacepy.utils import generate_uid

ORIGIN = "handles.example.org"
OWN_PERSON = {
    "abner_page_by_abnercoimbre": "abnercoimbre",
    "jakearchibald_com_by_jaffathecak": "jaffathecak",
    "spritely_institute_via_untrusem": "untrusem",
    "libreboot_org_via_runxiyu": "runxiyu",
    "lumi_codeberg_page_via_stilic": "stilic",
    "decomp_dev_via_FedericoSchonborn": "federicoschonborn",
    "via_rberger_2026-10-15_12_36_38_": "rberger",
    "via_veqq_2026-10-14_23_47_30_cac": "veqq",
    "costa_jacobpalm_dk_via_FedericoS": "federicos",
    "entropicthoughts_com_via_lcapald": "lcapald",
    "github_com_via_gmem": "gmem",
    "try_haxy_net_via_krig": "krig",
    "youtu_be_via_jeffective": "jeffective",
}
DOMAIN_ONLY = {
    "costa_jacobpalm_dk": "jacobpalm",
    "techcommunity_microsoft_com": "microsoft",
    "gtoal_com": "gtoal",
    "javidjamae": "javidjamae",
    "john_smith": "john_smith",
}


@pytest.mark.parametrize("raw,expected", sorted((OWN_PERSON | DOMAIN_ONLY).items()))
def test_the_person_is_found_behind_the_site_and_the_stamp(raw, expected):
    assert HandleBuilder.person(raw) == expected


@pytest.mark.parametrize("raw", sorted(OWN_PERSON))
def test_no_candidate_keeps_the_site_the_stamp_or_the_relation_word(raw):
    for candidate in islice(HandleBuilder(ORIGIN, raw).candidates(raw), HANDLES.rerolls):
        lowered = candidate.lower()
        assert "_via_" not in lowered and "_by_" not in lowered
        assert "2026" not in lowered and not lowered.startswith("via_")


def test_every_candidate_is_a_valid_handle_across_the_input_domain():
    raws = ["", "a", "ab", "x" * 80, "UPPER_case", "ünï-cödé", "__", "-a-", "via", "by_via", "9999", "john.smith", "a_b_c_d_e_f_g_h"]
    raws += [f"user{index}_by_someone{index}" for index in range(300)]
    for index, raw in enumerate(raws):
        seen = list(islice(HandleBuilder(ORIGIN, f"u{index}").candidates(raw), 60))
        assert seen
        for candidate in seen:
            assert HANDLES.min_length <= len(candidate) <= HANDLES.max_length, (raw, candidate)
            assert HandleBuilder.valid(candidate), (raw, candidate)


def test_the_same_record_always_gets_the_same_candidates():
    first = list(islice(HandleBuilder(ORIGIN, "u1").candidates("someone_via_other"), 40))
    second = list(islice(HandleBuilder(ORIGIN, "u1").candidates("someone_via_other"), 40))
    assert first == second


def test_the_mix_follows_the_spec_weights():
    counts = Counter()
    total = 4000
    for index in range(total):
        first = next(iter(HandleBuilder(ORIGIN, f"id{index}").candidates("kernelhacker")))
        counts["plain" if first == "kernelhacker" else "digits" if any(char.isdigit() for char in first) else "word"] += 1
    plain = counts["plain"] / total * 100
    assert abs(plain - HANDLES.plain_weight) < 5
    assert counts["digits"] / total * 100 > 25


def test_candidates_differ_between_records_with_the_same_name():
    firsts = {next(iter(HandleBuilder(ORIGIN, f"id{index}").candidates("same"))) for index in range(200)}
    assert len(firsts) > 40


@pytest.fixture
def clean(local_db):
    init_db()
    yield
    for table in ("sync_links", "sync_identities"):
        get_table(table).delete(origin=ORIGIN)


def push(records, humanize):
    return BatchRunner("users", humanize=humanize).run(SyncBatchForm(origin=ORIGIN, records=records))


def stored_name(origin_uid):
    link = get_table("sync_links").find_one(origin=ORIGIN, kind="users", origin_uid=origin_uid)
    return get_table("users").find_one(uid=link["local_uid"])["username"]


def test_a_new_user_gets_a_realistic_handle_and_an_update_keeps_it(clean):
    raw = f"abner_page_by_abnercoimbre{generate_uid()[-4:]}"
    record = {"origin_uid": "h1", "username": raw, "created_at": "2025-01-01T00:00:00Z"}
    push([record], humanize=True)
    name = stored_name("h1")
    assert name != raw and "_by_" not in name and name.startswith("abnercoimbre")
    push([{**record, "bio": "changed bio", "updated_at": "2025-02-01T00:00:00Z"}], humanize=True)
    assert stored_name("h1") == name


def test_without_the_flag_the_original_behaviour_is_untouched(clean):
    raw = f"plain_sender_{generate_uid()[-6:]}"
    push([{"origin_uid": "h2", "username": raw, "created_at": "2025-01-01T00:00:00Z"}], humanize=False)
    assert stored_name("h2") == raw


def test_an_alias_clone_name_is_never_decorated(clean):
    alias = f"mirakou{generate_uid()[-5:]}"
    claim_identity(ORIGIN, "alice", "alice", alias, "{}", False)
    push([{"origin_uid": "alice", "username": alias, "created_at": "2025-01-01T00:00:00Z"}], humanize=True)
    assert stored_name("alice") == alias


def test_two_senders_with_one_person_get_two_distinct_free_handles(clean):
    base = f"samename{generate_uid()[-5:]}"
    push(
        [{"origin_uid": f"s{index}", "username": f"site_{index}_via_{base}", "created_at": "2025-01-01T00:00:00Z"} for index in range(12)],
        humanize=True,
    )
    names = [stored_name(f"s{index}") for index in range(12)]
    assert len({name.lower() for name in names}) == 12