"""Unit tests for agent_team.task_model (§3.3, §3.3.1)."""

from __future__ import annotations

from agent_team.task_model import (
    Phase,
    PipelineState,
    TaskRecord,
    TaskStatus,
    new_thread_id,
    task_from_dict,
    task_from_json,
    task_to_dict,
    task_to_json,
)


def test_new_thread_id_unique_hex() -> None:
    a = new_thread_id()
    b = new_thread_id()
    assert a != b
    assert len(a) == 32
    int(a, 16)  # must be valid hex


def test_phase_members() -> None:
    assert {p.name for p in Phase} == {
        "INTAKE",
        "CLARIFY",
        "PLAN",
        "REVIEW",
        "BUILD",
        "VERIFY",
        "PARKED",
        "DONE",
    }


def test_task_record_defaults() -> None:
    rec = TaskRecord(
        thread_id="t1",
        status=TaskStatus.ACTIVE,
        current_phase=Phase.INTAKE,
    )
    assert rec.qa_history == []
    assert rec.plan is None
    assert rec.review_verdicts == []
    assert rec.candidate_diff is None
    assert rec.diff_hash is None
    assert rec.ci_results is None
    assert rec.transport == ""


def test_to_dict_serializes_enums_to_values() -> None:
    rec = TaskRecord(
        thread_id="t1",
        status=TaskStatus.WAITING_HUMAN,
        current_phase=Phase.CLARIFY,
    )
    data = task_to_dict(rec)
    assert data["status"] == "waiting_human"
    assert data["current_phase"] == "clarify"


def test_roundtrip_dict() -> None:
    rec = TaskRecord(
        thread_id="t1",
        status=TaskStatus.PARKED,
        current_phase=Phase.PLAN,
        qa_history=[{"q": "x", "a": "y"}],
        plan={"phases": [1, 2]},
        review_verdicts=["REQUEST_CHANGES"],
        candidate_diff="diff --git a b",
        diff_hash="deadbeef",
        ci_results={"conclusion": "success"},
        transport="slack",
        created_at="2026-06-17T00:00:00Z",
        updated_at="2026-06-17T01:00:00Z",
    )
    restored = task_from_dict(task_to_dict(rec))
    assert restored == rec


def test_roundtrip_json() -> None:
    rec = TaskRecord(
        thread_id="t2",
        status=TaskStatus.DONE,
        current_phase=Phase.DONE,
        diff_hash="abc",
    )
    restored = task_from_json(task_to_json(rec))
    assert restored == rec
    assert restored.status is TaskStatus.DONE
    assert restored.current_phase is Phase.DONE


def test_pipeline_state_keys_mirror_task_record() -> None:
    # Every PipelineState key should be a TaskRecord field.
    state_keys = set(PipelineState.__annotations__)
    record_fields = set(TaskRecord.__dataclass_fields__)
    assert state_keys == record_fields


def test_pipeline_state_usable_as_dict() -> None:
    state: PipelineState = {
        "thread_id": "t1",
        "status": "active",
        "current_phase": "intake",
    }
    assert state["thread_id"] == "t1"