"""Domain contracts aligned with the frontend frozen types."""

from __future__ import annotations

import pytest
from pydantic import ValidationError

from app.report_collaboration.contracts import (
    ALL_COLLABORATION_EVENT_TYPES,
    CollaborationEventEnvelope,
    CollaborationMessage,
    IntentDecision,
    NodeContractDetail,
    ReportRequirementSnapshot,
    SessionSnapshot,
    make_node_run_id,
    parse_node_run_id,
)

FRONTEND_EVENT_TYPES = {
    "session.snapshot",
    "message.created",
    "message.delta",
    "message.completed",
    "tool_call.created",
    "tool_call.delta",
    "tool_call.completed",
    "tool_result.created",
    "tool_result.delta",
    "tool_result.completed",
    "team_message.created",
    "team_message.delta",
    "team_message.completed",
    "requirement.updated",
    "clarification.requested",
    "clarification.resolved",
    "plan.progress",
    "plan.proposed",
    "plan.selected",
    "run.status.changed",
    "node.created",
    "node.status.changed",
    "node.progress",
    "node.attempt.created",
    "artifact.created",
    "artifact.validated",
    "artifact.rejected",
    "source.added",
    "command.classified",
    "command.confirmation.required",
    "command.accepted",
    "command.completed",
    "command.failed",
    "command.cancelled",
    "report.delta",
    "report.version.created",
    "review.created",
    "error",
    "heartbeat",
}


def test_event_types_match_frontend_frozen_set() -> None:
    assert set(ALL_COLLABORATION_EVENT_TYPES) == FRONTEND_EVENT_TYPES
    assert "agent_run.started" not in ALL_COLLABORATION_EVENT_TYPES


def test_event_envelope_serializes_camel_case() -> None:
    envelope = CollaborationEventEnvelope(
        eventId="evt_1",
        sessionId="session_1",
        runId="run_1",
        seq=1,
        type="message.created",
        timestamp="2026-09-05T04:00:00Z",
        data={"message": {"message_id": "msg_1"}},
    )
    dumped = envelope.to_sse_dict()
    assert dumped["eventId"] == "evt_1"
    assert dumped["sessionId"] == "session_1"
    assert dumped["runId"] == "run_1"
    assert dumped["seq"] == 1
    assert dumped["type"] == "message.created"
    assert dumped["data"]["message"]["message_id"] == "msg_1"


def test_event_envelope_accepts_snake_or_camel_aliases() -> None:
    envelope = CollaborationEventEnvelope.model_validate(
        {
            "event_id": "evt_2",
            "session_id": "session_1",
            "run_id": None,
            "seq": 2,
            "type": "heartbeat",
            "timestamp": "2026-09-05T04:00:01Z",
            "data": {},
        }
    )
    assert envelope.event_id == "evt_2"
    assert envelope.run_id is None


def test_node_run_id_is_deterministic() -> None:
    assert make_node_run_id("rcr_x", "research_brand", 2) == "rcr_x-research_brand-attempt2"
    assert parse_node_run_id("rcr_x-research_brand-attempt2") == ("rcr_x-research_brand", 2)
    with pytest.raises(ValueError):
        make_node_run_id("rcr_x", "research_brand", 0)
    with pytest.raises(ValueError):
        make_node_run_id("", "research_brand", 1)
    with pytest.raises(ValueError):
        parse_node_run_id("random-uuid")


def test_requirement_revision_required() -> None:
    with pytest.raises(ValidationError):
        ReportRequirementSnapshot(topic="新能源汽车", revision=0)


def test_session_snapshot_round_trip() -> None:
    snapshot = SessionSnapshot.model_validate(
        {
            "session": {
                "id": "session_1",
                "title": "新能源趋势",
                "status": "empty",
                "requirement_revision": 1,
                "selected_plan_id": None,
                "active_run_id": None,
                "current_report_version_id": None,
                "created_at": "2026-09-05T04:00:00Z",
                "updated_at": "2026-09-05T04:00:00Z",
            },
            "messages": [],
            "plans": [],
            "run": None,
            "nodes": [],
            "agent_runs": [],
            "commands": [],
            "report_versions": [],
            "last_seq": 0,
        }
    )
    dumped = snapshot.model_dump(mode="json")
    assert dumped["session"]["requirement_revision"] == 1
    assert dumped["last_seq"] == 0
    assert SessionSnapshot.model_validate(dumped).session.id == "session_1"


def test_node_contract_detail_has_no_execution_body() -> None:
    detail = NodeContractDetail(
        node_id="n1",
        label="品牌研究",
        role="Researcher",
        angle="市场份额",
        status="planned",
        attempt=1,
        mission="收集 2024 至今份额",
        output_artifact_type="EvidenceBundle",
        max_attempts=3,
    )
    fields = set(detail.model_dump().keys())
    assert "content" not in fields
    assert "markdown" not in fields
    assert "artifact_body" not in fields
    assert "tool_results" not in fields
    assert "mission" in fields
    assert "acceptance_criteria" in fields


def test_user_message_carries_idempotency_key_in_metadata() -> None:
    message = CollaborationMessage(
        message_id="msg_user_1",
        role="human",
        content="写一份新能源报告",
        visibility="visible",
        metadata={"idempotency_key": "idem-1"},
        created_at="2026-09-05T04:00:00Z",
        completed_at="2026-09-05T04:00:00Z",
    )
    assert message.metadata["idempotency_key"] == "idem-1"


def test_intent_decision_rejects_unknown_intent() -> None:
    with pytest.raises(ValidationError):
        IntentDecision(
            intent="do_whatever",  # type: ignore[arg-type]
            confidence=0.9,
            normalized_instruction="x",
            scope="conversation",
            reason="nope",
        )