"""Upload-stage tests: queue building, idempotency via upload_log.csv, the
stub-fixture guard, per-game failure isolation, pacing, and verify — all
against a fake uploader. No browser, no network."""

from __future__ import annotations

import csv
import random
from pathlib import Path

import pytest
import typer

from bggpipe.config import Config
from bggpipe.models import CollectionItem
from bggpipe.upload import (
    UPLOAD_LOG_COLUMNS,
    LoginError,
    UploadJob,
    _scrub,
    build_queue,
    run_upload,
    verify_uploads,
)


def _now() -> str:
    return "2026-08-01T00:00:00+00:00"


def _cfg(tmp_path: Path) -> Config:
    return Config(bgg_username="tester", data_dir=tmp_path)


def _write_csv(path: Path, columns: list[str], rows: list[dict]) -> None:
    with path.open("w", newline="") as f:
        writer = csv.DictWriter(f, fieldnames=columns)
        writer.writeheader()
        writer.writerows(rows)


def _add_row(bgg_id="1", name="Wingspan", version_id="", version_name=""):
    return {
        "bgg_id": bgg_id,
        "bgg_name": name,
        "year": "2019",
        "type": "boardgame",
        "version_id": version_id,
        "version_name": version_name,
        "title_raw": name.upper(),
        "source_photos": "x.jpg",
    }


def _update_row(collid="9", bgg_id="2", name="Britannia", vid="25", vname="AH ed."):
    return {
        "collid": collid,
        "bgg_id": bgg_id,
        "bgg_name": name,
        "version_id": vid,
        "version_name": vname,
    }


def _log_row(action="add", bgg_id="1", collid="", version_id="", status="added"):
    return {
        "action": action,
        "bgg_id": bgg_id,
        "collid": collid,
        "name": "Game",
        "version_id": version_id,
        "status": status,
        "timestamp": _now(),
        "error": "",
    }


def _seed_data(tmp_path: Path, to_add=None, to_update=None, log=None) -> None:
    _write_csv(
        tmp_path / "to_add.csv",
        list(_add_row().keys()),
        to_add if to_add is not None else [],
    )
    _write_csv(
        tmp_path / "to_update.csv",
        list(_update_row().keys()),
        to_update if to_update is not None else [],
    )
    if log is not None:
        _write_csv(tmp_path / "upload_log.csv", UPLOAD_LOG_COLUMNS, log)


class FakeUploader:
    """Records jobs; raises for names listed in `failures`."""

    def __init__(self, failures: set[str] | None = None):
        self.calls: list[UploadJob] = []
        self.failures = failures or set()

    def _handle(self, job: UploadJob, status: str) -> tuple[str, str]:
        self.calls.append(job)
        if job.name in self.failures:
            raise RuntimeError("dialog never appeared")
        return status, ""

    def add_game(self, job: UploadJob) -> tuple[str, str]:
        return self._handle(job, "added")

    def update_entry(self, job: UploadJob) -> tuple[str, str]:
        return self._handle(job, "updated")


# -- build_queue --------------------------------------------------------


def test_build_queue_skips_logged_successes():
    jobs, done, failed, _ = build_queue(
        [_add_row(bgg_id="1"), _add_row(bgg_id="2", name="Catan")],
        [_update_row(collid="9")],
        [
            _log_row(action="add", bgg_id="1", status="added"),
            _log_row(action="update", bgg_id="2", collid="9", status="updated"),
        ],
    )
    assert [j.bgg_id for j in jobs] == ["2"]
    assert done == 2
    assert failed == 0


def test_build_queue_second_copy_is_a_distinct_job():
    # Same game, different version: a separate physical copy, so a
    # logged add of one version must not swallow the other.
    jobs, done, _, _ = build_queue(
        [
            _add_row(bgg_id="1", version_id="10", version_name="First ed."),
            _add_row(bgg_id="1", version_id="11", version_name="Second ed."),
        ],
        [],
        [_log_row(action="add", bgg_id="1", version_id="10", status="added")],
    )
    assert [j.version_id for j in jobs] == ["11"]
    assert done == 1


def test_build_queue_failures_need_retry_flag():
    log = [_log_row(action="add", bgg_id="1", status="failed")]
    jobs, _, skipped, _ = build_queue([_add_row(bgg_id="1")], [], log)
    assert jobs == [] and skipped == 1
    jobs, _, skipped, _ = build_queue(
        [_add_row(bgg_id="1")], [], log, retry_failed=True
    )
    assert len(jobs) == 1 and skipped == 0


def test_build_queue_latest_log_entry_wins():
    # failed then added on retry -> done, not retriable
    log = [
        _log_row(action="add", bgg_id="1", status="failed"),
        _log_row(action="add", bgg_id="1", status="added"),
    ]
    jobs, done, _, _ = build_queue([_add_row(bgg_id="1")], [], log, retry_failed=True)
    assert jobs == [] and done == 1


# -- stub-fixture guard -------------------------------------------------


def test_real_run_refuses_while_stub_marker_exists(tmp_path):
    cfg = _cfg(tmp_path)
    cfg.cache_dir.mkdir(parents=True)
    (cfg.cache_dir / "STUB_FIXTURES.marker").write_text("stub")
    _seed_data(tmp_path, to_add=[_add_row()])
    with pytest.raises(typer.Exit):
        run_upload(cfg, uploader=FakeUploader(), sleep=lambda s: None, now=_now)


def test_dry_run_allowed_with_stub_marker_and_writes_nothing(tmp_path, capsys):
    cfg = _cfg(tmp_path)
    cfg.cache_dir.mkdir(parents=True)
    (cfg.cache_dir / "STUB_FIXTURES.marker").write_text("stub")
    _seed_data(tmp_path, to_add=[_add_row()], to_update=[_update_row()])
    run_upload(cfg, dry_run=True, now=_now)
    out = capsys.readouterr().out
    assert "WARNING" in out and "SYNTHETIC" in out
    assert "would add Wingspan" in out
    assert "collid 9" in out
    assert not (tmp_path / "upload_log.csv").exists()


# -- run_upload with a fake browser -------------------------------------


def test_run_logs_every_attempt_and_continues_past_failures(tmp_path):
    cfg = _cfg(tmp_path)
    _seed_data(
        tmp_path,
        to_add=[_add_row(bgg_id="1"), _add_row(bgg_id="2", name="Catan")],
        to_update=[_update_row(collid="9")],
    )
    fake = FakeUploader(failures={"Catan"})
    results = run_upload(cfg, uploader=fake, sleep=lambda s: None, now=_now)
    assert [r["status"] for r in results] == ["added", "failed", "updated"]
    logged = list(csv.DictReader((tmp_path / "upload_log.csv").open()))
    assert len(logged) == 3
    assert logged[1]["error"] == "RuntimeError: dialog never appeared"
    assert logged[2]["collid"] == "9"


def test_rerun_skips_completed_work(tmp_path):
    cfg = _cfg(tmp_path)
    _seed_data(tmp_path, to_add=[_add_row(bgg_id="1"), _add_row(bgg_id="2", name="C")])
    fake = FakeUploader()
    run_upload(cfg, uploader=fake, sleep=lambda s: None, now=_now)
    assert len(fake.calls) == 2
    again = FakeUploader()
    results = run_upload(cfg, uploader=again, sleep=lambda s: None, now=_now)
    assert again.calls == [] and results == []


def test_pacing_sleeps_2_to_4s_between_games_only(tmp_path):
    cfg = _cfg(tmp_path)
    _seed_data(tmp_path, to_add=[_add_row(bgg_id=str(i)) for i in range(1, 5)])
    sleeps: list[float] = []
    run_upload(
        cfg,
        uploader=FakeUploader(),
        sleep=sleeps.append,
        rng=random.Random(42),
        now=_now,
    )
    assert len(sleeps) == 3  # between games, not before the first
    assert all(2.0 <= s <= 4.0 for s in sleeps)


def test_limit_caps_the_queue(tmp_path):
    cfg = _cfg(tmp_path)
    _seed_data(tmp_path, to_add=[_add_row(bgg_id=str(i)) for i in range(1, 5)])
    fake = FakeUploader()
    run_upload(cfg, uploader=fake, limit=2, sleep=lambda s: None, now=_now)
    assert len(fake.calls) == 2


# -- credential hygiene -------------------------------------------------


def test_scrub_removes_credentials_from_error_text(monkeypatch):
    monkeypatch.setenv("BGG_USERNAME", "erics-user")
    monkeypatch.setenv("BGG_PASSWORD", "s3cret-pw")
    text = 'fill("erics-user") then fill("s3cret-pw") timed out'
    assert "s3cret-pw" not in _scrub(text)
    assert "erics-user" not in _scrub(text)


# -- verify -------------------------------------------------------------


def _item(object_id, coll_id, name="Game", version_id=None):
    return CollectionItem(
        object_id=object_id,
        coll_id=coll_id,
        name=name,
        subtype="boardgame",
        own=True,
        year=None,
        version_id=version_id,
    )


def test_verify_flags_missing_and_confirms_present():
    log = [
        _log_row(action="add", bgg_id="1", status="added"),
        _log_row(action="add", bgg_id="2", status="added"),
        _log_row(
            action="update", bgg_id="3", collid="30", version_id="7", status="updated"
        ),
    ]
    collection = [_item(1, 10), _item(3, 30, version_id=7)]
    problems = verify_uploads(log, collection)
    assert len(problems) == 1
    assert "not in collection" in problems[0]


def test_verify_checks_version_on_adds_and_updates():
    log = [
        _log_row(action="add", bgg_id="1", version_id="99", status="added"),
        _log_row(
            action="update", bgg_id="3", collid="30", version_id="7", status="updated"
        ),
    ]
    collection = [_item(1, 10, version_id=11), _item(3, 30, version_id=8)]
    problems = verify_uploads(log, collection)
    assert len(problems) == 2


def test_verify_ignores_failed_rows():
    log = [_log_row(action="add", bgg_id="5", status="failed")]
    assert verify_uploads(log, []) == []


def test_fresh_clone_marker_blocks_upload_without_cache_dir(tmp_path):
    # A fresh clone has the committed data/STUB_DATA.marker but no
    # gitignored bgg_cache/ at all — upload must still refuse.
    cfg = _cfg(tmp_path)
    (tmp_path / "STUB_DATA.marker").write_text("stub-derived CSVs")
    _seed_data(tmp_path, to_add=[_add_row()])
    with pytest.raises(typer.Exit):
        run_upload(cfg, uploader=FakeUploader(), sleep=lambda s: None, now=_now)


# -- failure isolation and resume ---------------------------------------


def test_login_error_aborts_without_poisoning_the_log(tmp_path):
    class BrokenLogin(FakeUploader):
        def add_game(self, job):
            raise LoginError("Cloudflare is challenging this browser")

    cfg = _cfg(tmp_path)
    _seed_data(tmp_path, to_add=[_add_row(bgg_id=str(i)) for i in range(1, 4)])
    results = run_upload(cfg, uploader=BrokenLogin(), sleep=lambda s: None, now=_now)
    assert results == []  # nothing logged: next run retries everything
    assert not (tmp_path / "upload_log.csv").exists()


def test_three_identical_failures_abort_as_systemic(tmp_path):
    cfg = _cfg(tmp_path)
    _seed_data(tmp_path, to_add=[_add_row(bgg_id=str(i)) for i in range(1, 6)])
    fake = FakeUploader(failures={"Wingspan"})  # every job shares the name
    results = run_upload(cfg, uploader=fake, sleep=lambda s: None, now=_now)
    assert len(results) == 3  # aborted after the third identical failure
    logged = list(csv.DictReader((tmp_path / "upload_log.csv").open()))
    assert len(logged) == 3  # jobs 4-5 left unlogged and retryable


def test_added_no_version_is_done_and_verify_tolerates_it(tmp_path):
    class NoVersionPicker(FakeUploader):
        def add_game(self, job):
            self.calls.append(job)
            return "added_no_version", "version not in picker; added without version"

    cfg = _cfg(tmp_path)
    _seed_data(tmp_path, to_add=[_add_row(version_id="99", version_name="4th ed.")])
    run_upload(cfg, uploader=NoVersionPicker(), sleep=lambda s: None, now=_now)
    # done: re-running must NOT re-add (a duplicate collection entry)
    again = FakeUploader()
    assert run_upload(cfg, uploader=again, sleep=lambda s: None, now=_now) == []
    assert again.calls == []
    # verify: game present without the version is the EXPECTED outcome
    log = list(csv.DictReader((tmp_path / "upload_log.csv").open()))
    assert verify_uploads(log, [_item(1, 10)]) == []


def test_missing_to_add_csv_is_a_loud_precondition_failure(tmp_path):
    cfg = _cfg(tmp_path)  # no diff outputs seeded at all
    with pytest.raises(typer.Exit):
        run_upload(cfg, uploader=FakeUploader(), sleep=lambda s: None, now=_now)


def test_second_update_for_same_game_is_deferred(tmp_path):
    # the row-edit flow can't target a collid, so only one update per game
    # per run is safe
    cfg = _cfg(tmp_path)
    _seed_data(
        tmp_path,
        to_update=[
            _update_row(collid="9", bgg_id="2"),
            _update_row(collid="10", bgg_id="2", vid="26", vname="2nd ed."),
        ],
    )
    fake = FakeUploader()
    results = run_upload(cfg, uploader=fake, sleep=lambda s: None, now=_now)
    assert [r["collid"] for r in results] == ["9"]
    # after the first lands, the next run picks up the deferred one
    again = FakeUploader()
    results = run_upload(cfg, uploader=again, sleep=lambda s: None, now=_now)
    assert [j.collid for j in again.calls] == ["10"]


def test_real_run_without_credentials_exits_before_any_browser(tmp_path, monkeypatch):
    monkeypatch.delenv("BGG_USERNAME", raising=False)
    monkeypatch.delenv("BGG_PASSWORD", raising=False)
    cfg = _cfg(tmp_path)
    _seed_data(tmp_path, to_add=[_add_row()])
    with pytest.raises(typer.Exit):
        run_upload(cfg, sleep=lambda s: None, now=_now)  # uploader=None: real path
    assert not (tmp_path / "upload_log.csv").exists()


def test_same_key_second_copy_survives_limit_and_interrupts(tmp_path):
    # two vetoed duplicate copies share ("add", bgg_id, version): one logged
    # success must complete exactly ONE of them, not both
    cfg = _cfg(tmp_path)
    twin = _add_row(bgg_id="13", name="Catan", version_id="123", version_name="3rd")
    _seed_data(tmp_path, to_add=[dict(twin), dict(twin)])

    first = FakeUploader()
    run_upload(cfg, uploader=first, limit=1, sleep=lambda s: None, now=_now)
    assert len(first.calls) == 1

    second = FakeUploader()
    run_upload(cfg, uploader=second, sleep=lambda s: None, now=_now)
    assert len(second.calls) == 1  # the second copy, not zero, not two

    third = FakeUploader()
    assert run_upload(cfg, uploader=third, sleep=lambda s: None, now=_now) == []


def test_consecutive_failure_counter_resets_on_success(tmp_path):
    class FlakyPairs(FakeUploader):
        def add_game(self, job):
            self.calls.append(job)
            if job.bgg_id in ("1", "2", "4", "5"):
                raise RuntimeError("dialog never appeared")
            return "added", ""

    cfg = _cfg(tmp_path)
    _seed_data(tmp_path, to_add=[_add_row(bgg_id=str(i)) for i in range(1, 7)])
    fake = FlakyPairs()
    run_upload(cfg, uploader=fake, sleep=lambda s: None, now=_now)
    assert len(fake.calls) == 6  # fail,fail,ok,fail,fail,ok — never aborts


def test_empty_game_name_is_refused_not_uploaded(tmp_path):
    cfg = _cfg(tmp_path)
    _seed_data(tmp_path, to_add=[_add_row(bgg_id="42", name="")])
    fake = FakeUploader()
    results = run_upload(cfg, uploader=fake, sleep=lambda s: None, now=_now)
    assert results == [] and fake.calls == []


def test_verify_shortfall_reported_once_per_game(tmp_path):
    # two DONE adds (different versions) of one game, one copy on BGG:
    # the shortfall is reported once per game, not once per logged add
    log = [
        _log_row(action="add", bgg_id="7", version_id="1", status="added"),
        _log_row(action="add", bgg_id="7", version_id="2", status="added"),
    ]
    problems = verify_uploads(log, [_item(7, 70, version_id=1)])
    shortfalls = [p for p in problems if "add(s) logged" in p]
    assert len(shortfalls) == 1


class _VerifyClient:
    def __init__(self, collection):
        self.collection = collection
        self.calls: list[dict] = []

    def collection_full(self, username, *, refresh=False):
        self.calls.append({"username": username, "refresh": refresh})
        return self.collection


def test_run_upload_verify_wiring(tmp_path, capsys):
    # verify=True must re-fetch the LIVE collection (refresh) and cross-check
    cfg = _cfg(tmp_path)
    _seed_data(tmp_path, to_add=[_add_row(bgg_id="1", name="Wingspan")])
    run_upload(cfg, uploader=FakeUploader(), sleep=lambda s: None, now=_now)
    client = _VerifyClient([_item(1, 10, name="Wingspan")])
    run_upload(
        cfg,
        uploader=FakeUploader(),
        verify=True,
        client=client,
        sleep=lambda s: None,
        now=_now,
    )
    assert client.calls == [{"username": "tester", "refresh": True}]
    assert "Verification OK" in capsys.readouterr().out


def test_verify_marks_second_copy_adds_unverifiable():
    log = [
        {**_log_row(action="add", bgg_id="13", status="added"), "second_copy": "1"},
    ]
    problems = verify_uploads(log, [_item(13, 900, version_id=7)])
    (problem,) = problems
    assert "can't be verified" in problem and "confirm by eye" in problem


def test_drift_warning_suppressed_for_multi_edition_partial_run(tmp_path, capsys):
    # run 1 added edition A; edition B is still queued alongside A's row:
    # that's a two-edition game mid-way, not a re-review drift
    cfg = _cfg(tmp_path)
    _seed_data(
        tmp_path,
        to_add=[
            _add_row(bgg_id="13", name="Catan", version_id="1", version_name="A"),
            _add_row(bgg_id="13", name="Catan", version_id="2", version_name="B"),
        ],
        log=[_log_row(action="add", bgg_id="13", version_id="1", status="added")],
    )
    run_upload(cfg, uploader=FakeUploader(), sleep=lambda s: None, now=_now)
    assert "manual correction" not in capsys.readouterr().out