"""Execution-loop edge coverage for preparation, callbacks, and recovery."""

from __future__ import annotations

import sqlite3
import sys
from contextlib import nullcontext
from pathlib import Path
from types import SimpleNamespace

from testing.tests.test_hermes_cli_support import _completed_result, lanes


class _Connection:
    def close(self):
        return None


def test_missing_claim_is_a_noop(tmp_path: Path, monkeypatch):
    db = SimpleNamespace(
        scoped_current_board=lambda _board: nullcontext(),
        connect=lambda board: _Connection(),
        get_task=lambda *_args: None,
    )
    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=db))
    lanes.execute_claim("cassandra", "missing")


def test_transient_callback_storage_errors_do_not_kill_provider(
    tmp_path: Path,
    monkeypatch,
):
    task = SimpleNamespace(
        id="t_callbacks",
        status="running",
        current_run_id=20,
        assignee="cli-auto",
        max_runtime_seconds=60,
    )
    blocks = []
    db = SimpleNamespace(
        scoped_current_board=lambda _board: nullcontext(),
        connect=lambda board: _Connection(),
        get_task=lambda *_args: task,
        worker_log_path=lambda *_args, **_kwargs: tmp_path / "worker.log",
        _resolve_worktree_workspace=lambda *_args, **_kwargs: (tmp_path, "branch"),
        set_branch_name=lambda *_args: None,
        set_workspace_path=lambda *_args: None,
        build_worker_context=lambda *_args: "exercise callbacks",
        heartbeat_worker=lambda *_args, **_kwargs: (_ for _ in ()).throw(
            sqlite3.OperationalError("heartbeat volume")
        ),
        add_comment=lambda *_args, **_kwargs: (_ for _ in ()).throw(
            sqlite3.OperationalError("comment volume")
        ),
        block_task=lambda *_args, **kwargs: blocks.append(kwargs),
    )
    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=db))
    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "lanes")
    monkeypatch.setattr(lanes, "KANBAN_STORAGE_ATTEMPTS", 1)
    monkeypatch.setattr(lanes, "fresh_unavailable_provider", lambda *_args, **_kwargs: "claude")
    route = lanes.Route("codex", "gpt", "high", "p", "c", "r", 1, ())
    monkeypatch.setattr(lanes, "select_route", lambda *_args, **_kwargs: route)

    def provider(*args, **_kwargs):
        assert args[6]("still working") is True
        return lanes.ProcessResult(1, "failed", None, False)

    monkeypatch.setattr(lanes, "run_provider", provider)
    lanes.execute_claim("cassandra", "t_callbacks")

    assert blocks and blocks[0]["kind"] == "capability"


def test_restart_handoff_survives_missing_prior_log(tmp_path: Path, monkeypatch):
    task = SimpleNamespace(
        id="t_restart",
        status="running",
        current_run_id=21,
        assignee="cli-auto",
        max_runtime_seconds=60,
    )
    state_root = tmp_path / "lanes"
    monkeypatch.setattr(lanes, "STATE_ROOT", state_root)
    state_file = lanes.state_path("cassandra", "t_restart")
    lanes.atomic_json(state_file, {"current_route": {"provider": "claude"}})
    blocks = []
    db = SimpleNamespace(
        scoped_current_board=lambda _board: nullcontext(),
        connect=lambda board: _Connection(),
        get_task=lambda *_args: task,
        worker_log_path=lambda *_args, **_kwargs: tmp_path / "missing.log",
        _resolve_worktree_workspace=lambda *_args, **_kwargs: (tmp_path, "branch"),
        set_branch_name=lambda *_args: None,
        set_workspace_path=lambda *_args: None,
        build_worker_context=lambda *_args: "resume",
        add_comment=lambda *_args, **_kwargs: None,
        heartbeat_worker=lambda *_args, **_kwargs: True,
        block_task=lambda *_args, **kwargs: blocks.append(kwargs),
    )
    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=db))
    route = lanes.Route("codex", "gpt", "high", "p", "c", "r", 1, ())
    monkeypatch.setattr(lanes, "select_route", lambda *_args, **_kwargs: route)
    handoffs = []
    monkeypatch.setattr(
        lanes,
        "git_handoff",
        lambda _workspace, output: handoffs.append(output) or "handoff",
    )
    monkeypatch.setattr(
        lanes,
        "run_provider",
        lambda *_args, **_kwargs: lanes.ProcessResult(1, "failed", None, False),
    )

    lanes.execute_claim("cassandra", "t_restart")

    assert handoffs == ["Previous provider log was unavailable after restart."]
    assert blocks


def test_unreplayable_persistence_error_recovers_exact_run(
    tmp_path: Path,
    monkeypatch,
):
    task = SimpleNamespace(
        id="t_persist",
        status="running",
        current_run_id=22,
        assignee="cli-auto",
        max_runtime_seconds=60,
    )
    comments = []
    db = SimpleNamespace(
        scoped_current_board=lambda _board: nullcontext(),
        connect=lambda board: _Connection(),
        get_task=lambda *_args: task,
        worker_log_path=lambda *_args, **_kwargs: tmp_path / "worker.log",
        _resolve_worktree_workspace=lambda *_args, **_kwargs: (tmp_path, "branch"),
        set_branch_name=lambda *_args: None,
        set_workspace_path=lambda *_args: None,
        build_worker_context=lambda *_args: "finish",
        add_comment=lambda _conn, _task, _author, body: comments.append(body),
        heartbeat_worker=lambda *_args, **_kwargs: True,
        block_task=lambda *_args, **_kwargs: None,
    )
    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=db))
    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "lanes")
    monkeypatch.setattr(
        lanes,
        "select_route",
        lambda *_args, **_kwargs: lanes.Route(
            "codex", "gpt", "high", "p", "c", "r", 1, ()
        ),
    )
    monkeypatch.setattr(
        lanes,
        "run_provider",
        lambda *_args, **_kwargs: lanes.ProcessResult(
            0, "", _completed_result("accepted"), False
        ),
    )
    monkeypatch.setattr(
        lanes,
        "_write_terminal_record",
        lambda *_args, **_kwargs: (_ for _ in ()).throw(OSError("disk")),
    )
    monkeypatch.setattr(lanes, "_has_pending_finalization", lambda *_args: False)
    recovered = []
    monkeypatch.setattr(
        lanes,
        "_recover_exact_run",
        lambda *args: recovered.append(args) or True,
    )

    lanes.execute_claim("cassandra", "t_persist")

    assert recovered and recovered[0][1].run_id == 22
    assert any("terminal replayable=False" in body for body in comments)


def test_unexpected_route_exception_blocks_the_exact_run(
    tmp_path: Path,
    monkeypatch,
):
    task = SimpleNamespace(
        id="t_route",
        status="running",
        current_run_id=23,
        assignee="cli-auto",
        max_runtime_seconds=60,
    )
    blocks = []
    db = SimpleNamespace(
        scoped_current_board=lambda _board: nullcontext(),
        connect=lambda board: _Connection(),
        get_task=lambda *_args: task,
        worker_log_path=lambda *_args, **_kwargs: tmp_path / "worker.log",
        _resolve_worktree_workspace=lambda *_args, **_kwargs: (tmp_path, "branch"),
        set_branch_name=lambda *_args: None,
        set_workspace_path=lambda *_args: None,
        build_worker_context=lambda *_args: "route",
        add_comment=lambda *_args, **_kwargs: None,
        heartbeat_worker=lambda *_args, **_kwargs: True,
        block_task=lambda *_args, **kwargs: blocks.append(kwargs),
    )
    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=db))
    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "lanes")
    monkeypatch.setattr(
        lanes,
        "select_route",
        lambda *_args, **_kwargs: (_ for _ in ()).throw(RuntimeError("router down")),
    )

    lanes.execute_claim("cassandra", "t_route")

    assert blocks[0]["expected_run_id"] == 23
    assert "router down" in blocks[0]["reason"]


def test_capacity_fallback_without_evidence_blocks_with_provider_output(
    tmp_path: Path,
    monkeypatch,
):
    """A fallback turn with no structured result blocks on raw provider output."""
    task = SimpleNamespace(
        id="t_nofallback",
        status="running",
        current_run_id=22,
        assignee="cli-auto",
        max_runtime_seconds=60,
    )
    blocks = []
    db = SimpleNamespace(
        scoped_current_board=lambda _board: nullcontext(),
        connect=lambda board: _Connection(),
        get_task=lambda *_args: task,
        worker_log_path=lambda *_args, **_kwargs: tmp_path / "worker.log",
        _resolve_worktree_workspace=lambda *_args, **_kwargs: (tmp_path, "branch"),
        set_branch_name=lambda *_args: None,
        set_workspace_path=lambda *_args: None,
        build_worker_context=lambda *_args: "attempt both providers",
        add_comment=lambda *_args, **_kwargs: None,
        heartbeat_worker=lambda *_args, **_kwargs: True,
        block_task=lambda *_args, **kwargs: blocks.append(kwargs),
    )
    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=db))
    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "lanes")
    monkeypatch.setattr(lanes, "fresh_unavailable_provider", lambda *_args, **_kwargs: None)
    codex = lanes.Route("codex", "gpt", "high", "p", "c", "r", 1, ())
    claude = lanes.Route("claude", "fable", "high", "p", "c", "r", 1, ())
    monkeypatch.setattr(
        lanes,
        "select_route",
        lambda _prompt, assignee, **_kwargs: claude
        if assignee == "cli-claude-high"
        else codex,
    )
    monkeypatch.setattr(lanes, "git_handoff", lambda *_args: "handoff")
    reports = [
        lanes.ProcessResult(1, "usage limit reached", None, True),
        lanes.ProcessResult(1, "fallback also failed", None, False),
    ]
    monkeypatch.setattr(lanes, "run_provider", lambda *_args, **_kwargs: reports.pop(0))

    lanes.execute_claim("cassandra", "t_nofallback")

    assert reports == []
    assert blocks and "fallback also failed" in blocks[0]["reason"]
    assert blocks[0]["kind"] == "capability"


def test_worker_blockers_become_the_block_reason_without_goal_mode(
    tmp_path: Path,
    monkeypatch,
):
    """A structured non-completed report blocks with its own stated blockers."""
    task = SimpleNamespace(
        id="t_blocked",
        status="running",
        current_run_id=23,
        assignee="cli-auto",
        max_runtime_seconds=60,
    )
    blocks = []
    db = SimpleNamespace(
        scoped_current_board=lambda _board: nullcontext(),
        connect=lambda board: _Connection(),
        get_task=lambda *_args: task,
        worker_log_path=lambda *_args, **_kwargs: tmp_path / "worker.log",
        _resolve_worktree_workspace=lambda *_args, **_kwargs: (tmp_path, "branch"),
        set_branch_name=lambda *_args: None,
        set_workspace_path=lambda *_args: None,
        build_worker_context=lambda *_args: "report the obstacle",
        add_comment=lambda *_args, **_kwargs: None,
        heartbeat_worker=lambda *_args, **_kwargs: True,
        block_task=lambda *_args, **kwargs: blocks.append(kwargs),
    )
    monkeypatch.setitem(sys.modules, "hermes_cli", SimpleNamespace(kanban_db=db))
    monkeypatch.setattr(lanes, "STATE_ROOT", tmp_path / "lanes")
    monkeypatch.setattr(lanes, "fresh_unavailable_provider", lambda *_args, **_kwargs: None)
    route = lanes.Route("codex", "gpt", "high", "p", "c", "r", 1, ())
    monkeypatch.setattr(lanes, "select_route", lambda *_args, **_kwargs: route)
    structured = {
        **_completed_result("progress only"),
        "status": "blocked",
        "blockers": ["credentials expired", "remote unreachable"],
    }
    monkeypatch.setattr(
        lanes,
        "run_provider",
        lambda *_args, **_kwargs: lanes.ProcessResult(0, "out", structured, False),
    )

    lanes.execute_claim("cassandra", "t_blocked")

    assert blocks and blocks[0]["reason"] == (
        "credentials expired; remote unreachable"
    )