"""ORCH-026 Level B — blocked-task visibility (TC-B06).

A dep-blocked task surfaces a waiting-line ("⏳ ждёт ORCH-NNN") in its single
Telegram tracker card; the "one card per task" invariant is preserved (the line
is added to the SAME render, not a new message). Render is never broken by the
dependency lookup (never-raise).
"""
import os
import tempfile

import pytest

os.environ["ORCH_DB_PATH"] = os.path.join(tempfile.gettempdir(), "test_orch026_visibility.db")
os.environ.setdefault("ORCH_GITEA_TOKEN", "test-token")
os.environ.setdefault("ORCH_PLANE_API_TOKEN", "test-token")

import src.db as db  # noqa: E402
from src.db import init_db, get_db  # noqa: E402
from src import notifications  # noqa: E402


@pytest.fixture(autouse=True)
def fresh_db(tmp_path, monkeypatch):
    dbfile = tmp_path / "vis.db"
    monkeypatch.setattr(db.settings, "db_path", str(dbfile))
    monkeypatch.setattr(db.settings, "task_deps_enabled", True, raising=False)
    init_db()
    yield


def _make_task(work_item_id, stage="development"):
    conn = get_db()
    cur = conn.execute(
        "INSERT INTO tasks (plane_id, work_item_id, repo, branch, stage, title) "
        "VALUES (?, ?, ?, ?, ?, ?)",
        (work_item_id, work_item_id, "orchestrator", f"feature/{work_item_id}",
         stage, f"title {work_item_id}"),
    )
    tid = cur.lastrowid
    conn.commit()
    conn.close()
    return tid


def test_blocked_task_shows_waiting_line():
    a = _make_task("ORCH-90", stage="development")
    b = _make_task("ORCH-91", stage="development")
    db.add_dependency(b, a)
    text = notifications.render_task_tracker(b)
    assert "ждёт" in text
    assert "ORCH-90" in text


def test_ready_task_has_no_waiting_line():
    a = _make_task("ORCH-92", stage="done")
    b = _make_task("ORCH-93", stage="development")
    db.add_dependency(b, a)
    text = notifications.render_task_tracker(b)
    assert "ждёт" not in text


def test_done_task_has_no_waiting_line():
    a = _make_task("ORCH-94", stage="development")
    b = _make_task("ORCH-95", stage="done")
    db.add_dependency(b, a)
    text = notifications.render_task_tracker(b)
    # A done task is terminal -> the waiting-line branch is skipped entirely.
    assert "ждёт" not in text


def test_render_never_raises_on_dep_error(monkeypatch):
    b = _make_task("ORCH-96", stage="development")
    from src import task_deps
    monkeypatch.setattr(task_deps, "is_task_ready",
                        lambda tid: (_ for _ in ()).throw(RuntimeError("boom")),
                        raising=False)
    # Must still produce a card (no crash).
    text = notifications.render_task_tracker(b)
    assert "ORCH-96" in text