from __future__ import annotations

import asyncio
from datetime import datetime, timezone
from unittest.mock import MagicMock

import pytest

from app.config import Settings
from app.services.consumable_vision_algorithm import (
    PredictionCandidate,
    PredictionResult,
)
from app.surgery_errors import SurgeryPipelineError
from app.services.video.session_manager import (
    CameraSessionManager,
    PendingConsumableConfirmation,
    RunningSurgery,
    SurgerySessionState,
)


def test_live_consumption_requires_non_empty_details() -> None:
    settings = Settings()
    mgr = CameraSessionManager(
        settings=settings,
        vision_algorithm=MagicMock(),
        hikvision_runtime=None,
        result_repository=None,
    )
    st = SurgerySessionState(candidate_consumables=["纱布"])
    run = RunningSurgery(stop_event=asyncio.Event(), state=st, tasks=[])
    mgr._registry._active["123456"] = run
    st.ready.set()
    assert mgr.live_consumption_if_active("123456") is None


@pytest.mark.asyncio
async def test_resolve_voice_accepts_label_on_surgery_list_not_in_topk_options() -> None:
    settings = Settings()
    mgr = CameraSessionManager(
        settings=settings,
        vision_algorithm=MagicMock(),
        hikvision_runtime=None,
        result_repository=None,
    )
    st = SurgerySessionState(
        candidate_consumables=["纱布", "止血钳"],
        name_to_code={"纱布": "P1", "止血钳": "P2"},
    )
    pid = "test-confirm-id"
    st.pending_by_id[pid] = PendingConsumableConfirmation(
        id=pid,
        status="pending",
        options=[("纱布", 0.4)],
        prompt_text="请确认",
        created_at=datetime.now(timezone.utc),
        model_top1_label="unknown",
        model_top1_confidence=0.41,
    )
    st.pending_fifo.append(pid)
    mgr._registry._active["123456"] = RunningSurgery(
        stop_event=asyncio.Event(), state=st, tasks=[]
    )

    await mgr.resolve_pending_confirmation(
        "123456", pid, chosen_label="止血钳", rejected=False
    )

    assert len(st.details) == 1
    assert st.details[0].item_id == "P2"
    assert st.details[0].item_name == "止血钳"
    assert st.details[0].source == "voice"


@pytest.mark.asyncio
async def test_resolve_pending_appends_voice_detail() -> None:
    settings = Settings()
    mgr = CameraSessionManager(
        settings=settings,
        vision_algorithm=MagicMock(),
        hikvision_runtime=None,
        result_repository=None,
    )
    st = SurgerySessionState(candidate_consumables=["纱布", "缝线"])
    pid = "test-confirm-id"
    st.pending_by_id[pid] = PendingConsumableConfirmation(
        id=pid,
        status="pending",
        options=[("纱布", 0.4), ("缝线", 0.3)],
        prompt_text="请确认",
        created_at=datetime.now(timezone.utc),
        model_top1_label="unknown",
        model_top1_confidence=0.41,
    )
    st.pending_fifo.append(pid)
    run = RunningSurgery(stop_event=asyncio.Event(), state=st, tasks=[])
    mgr._registry._active["123456"] = run

    await mgr.resolve_pending_confirmation(
        "123456", pid, chosen_label="纱布", rejected=False
    )

    assert len(st.details) == 1
    assert st.details[0].item_name == "纱布"
    assert st.details[0].source == "voice"
    assert pid not in st.pending_by_id
    assert st.pending_fifo == []


@pytest.mark.asyncio
async def test_resolve_reject_closes_without_detail() -> None:
    settings = Settings()
    mgr = CameraSessionManager(
        settings=settings,
        vision_algorithm=MagicMock(),
        hikvision_runtime=None,
        result_repository=None,
    )
    st = SurgerySessionState(candidate_consumables=["纱布"])
    pid = "r1"
    st.pending_by_id[pid] = PendingConsumableConfirmation(
        id=pid,
        status="pending",
        options=[("纱布", 0.4)],
        prompt_text="x",
        created_at=datetime.now(timezone.utc),
        model_top1_label="x",
        model_top1_confidence=0.4,
    )
    st.pending_fifo.append(pid)
    mgr._registry._active["123456"] = RunningSurgery(
        stop_event=asyncio.Event(), state=st, tasks=[]
    )

    await mgr.resolve_pending_confirmation(
        "123456", pid, chosen_label=None, rejected=True
    )

    assert st.details == []
    assert pid not in st.pending_by_id


@pytest.mark.asyncio
async def test_handle_skips_when_candidate_list_empty() -> None:
    settings = Settings()
    mgr = CameraSessionManager(
        settings=settings,
        vision_algorithm=MagicMock(),
        hikvision_runtime=None,
        result_repository=None,
    )
    state = SurgerySessionState(candidate_consumables=[])
    res = PredictionResult(
        label="纱布",
        confidence=0.99,
        topk=[PredictionCandidate(label="纱布", confidence=0.99)],
    )
    await mgr._handle_classification_result(state=state, cls_res=res)
    assert state.details == []
    assert state.pending_fifo == []


@pytest.mark.asyncio
async def test_archive_retry_loop_starts() -> None:
    settings = Settings()
    mgr = CameraSessionManager(
        settings=settings,
        vision_algorithm=MagicMock(),
        hikvision_runtime=None,
        result_repository=None,
    )
    await mgr.start_archive_retry_loop()
    persister = mgr._archive
    assert persister._retry_task is not None
    await mgr.shutdown()
    assert persister._retry_task is None


@pytest.mark.asyncio
async def test_handle_skips_below_voice_floor() -> None:
    settings = Settings()
    settings.video_voice_confirm_min_confidence = 0.5
    mgr = CameraSessionManager(
        settings=settings,
        vision_algorithm=MagicMock(),
        hikvision_runtime=None,
        result_repository=None,
    )
    state = SurgerySessionState(candidate_consumables=["纱布"])
    res = PredictionResult(
        label="纱布",
        confidence=0.4,
        topk=[PredictionCandidate(label="纱布", confidence=0.4)],
    )
    await mgr._handle_classification_result(state=state, cls_res=res)
    assert state.details == []
    assert state.pending_fifo == []


@pytest.mark.asyncio
async def test_handle_auto_vision_confirm() -> None:
    settings = Settings()
    mgr = CameraSessionManager(
        settings=settings,
        vision_algorithm=MagicMock(),
        hikvision_runtime=None,
        result_repository=None,
    )
    state = SurgerySessionState(candidate_consumables=["纱布"])
    res = PredictionResult(
        label="纱布",
        confidence=0.99,
        topk=[PredictionCandidate(label="纱布", confidence=0.99)],
    )
    await mgr._handle_classification_result(state=state, cls_res=res)
    assert len(state.details) == 1
    assert state.details[0].source == "vision"
    assert state.details[0].item_id == "纱布"


@pytest.mark.asyncio
async def test_handle_high_conf_top1_not_in_candidates_enqueues_pending() -> None:
    settings = Settings()
    mgr = CameraSessionManager(
        settings=settings,
        vision_algorithm=MagicMock(),
        hikvision_runtime=None,
        result_repository=None,
    )
    state = SurgerySessionState(candidate_consumables=["缝线"])
    res = PredictionResult(
        label="纱布",
        confidence=0.9,
        topk=[
            PredictionCandidate(label="纱布", confidence=0.9),
            PredictionCandidate(label="缝线", confidence=0.2),
        ],
    )
    await mgr._handle_classification_result(state=state, cls_res=res)
    assert len(state.details) == 1
    assert state.details[0].item_name == "待确认"
    assert state.details[0].source == "pending_confirmation"
    assert len(state.pending_fifo) == 1
    pid = state.pending_fifo[0]
    assert state.details[0].pending_confirmation_id == pid
    assert "缝线" in state.pending_by_id[pid].prompt_text


@pytest.mark.asyncio
async def test_handle_mid_confidence_enqueues_pending() -> None:
    settings = Settings()
    settings.video_auto_confirm_confidence = 0.8
    settings.video_voice_confirm_min_confidence = 0.3
    mgr = CameraSessionManager(
        settings=settings,
        vision_algorithm=MagicMock(),
        hikvision_runtime=None,
        result_repository=None,
    )
    state = SurgerySessionState(candidate_consumables=["纱布", "缝线"])
    res = PredictionResult(
        label="纱布",
        confidence=0.5,
        topk=[
            PredictionCandidate(label="纱布", confidence=0.5),
            PredictionCandidate(label="缝线", confidence=0.3),
        ],
    )
    await mgr._handle_classification_result(state=state, cls_res=res)
    assert len(state.pending_fifo) == 1
    assert len(state.details) == 1
    assert state.details[0].item_name == "待确认"


@pytest.mark.asyncio
async def test_handle_voice_disabled_no_pending_for_mid_conf() -> None:
    settings = Settings()
    settings.voice_confirmation_enabled = False
    settings.video_auto_confirm_confidence = 0.8
    mgr = CameraSessionManager(
        settings=settings,
        vision_algorithm=MagicMock(),
        hikvision_runtime=None,
        result_repository=None,
    )
    state = SurgerySessionState(candidate_consumables=["纱布"])
    res = PredictionResult(
        label="纱布",
        confidence=0.5,
        topk=[PredictionCandidate(label="纱布", confidence=0.5)],
    )
    await mgr._handle_classification_result(state=state, cls_res=res)
    assert state.pending_fifo == []
    assert state.details == []


@pytest.mark.asyncio
async def test_handle_vision_cooldown_skips_duplicate() -> None:
    settings = Settings()
    settings.video_detail_cooldown_sec = 3600.0
    mgr = CameraSessionManager(
        settings=settings,
        vision_algorithm=MagicMock(),
        hikvision_runtime=None,
        result_repository=None,
    )
    state = SurgerySessionState(candidate_consumables=["纱布"])
    res = PredictionResult(
        label="纱布",
        confidence=0.99,
        topk=[PredictionCandidate(label="纱布", confidence=0.99)],
    )
    await mgr._handle_classification_result(state=state, cls_res=res)
    await mgr._handle_classification_result(state=state, cls_res=res)
    assert len(state.details) == 1


@pytest.mark.asyncio
async def test_handle_pending_dedupe_cooldown() -> None:
    settings = Settings()
    settings.video_detail_cooldown_sec = 3600.0
    mgr = CameraSessionManager(
        settings=settings,
        vision_algorithm=MagicMock(),
        hikvision_runtime=None,
        result_repository=None,
    )
    state = SurgerySessionState(candidate_consumables=["缝线"])
    res = PredictionResult(
        label="纱布",
        confidence=0.9,
        topk=[
            PredictionCandidate(label="纱布", confidence=0.9),
            PredictionCandidate(label="缝线", confidence=0.2),
        ],
    )
    await mgr._handle_classification_result(state=state, cls_res=res)
    await mgr._handle_classification_result(state=state, cls_res=res)
    assert len(state.pending_fifo) == 1


@pytest.mark.asyncio
async def test_resolve_invalid_chosen_label() -> None:
    settings = Settings()
    mgr = CameraSessionManager(
        settings=settings,
        vision_algorithm=MagicMock(),
        hikvision_runtime=None,
        result_repository=None,
    )
    st = SurgerySessionState(candidate_consumables=["纱布"])
    pid = "p1"
    st.pending_by_id[pid] = PendingConsumableConfirmation(
        id=pid,
        status="pending",
        options=[("纱布", 0.4)],
        prompt_text="x",
        created_at=datetime.now(timezone.utc),
        model_top1_label="x",
        model_top1_confidence=0.4,
    )
    st.pending_fifo.append(pid)
    mgr._registry._active["123456"] = RunningSurgery(
        stop_event=asyncio.Event(), state=st, tasks=[]
    )
    with pytest.raises(SurgeryPipelineError) as excinfo:
        await mgr.resolve_pending_confirmation(
            "123456", pid, chosen_label="止血钳", rejected=False
        )
    assert excinfo.value.code == "CONFIRMATION_INVALID"


@pytest.mark.asyncio
async def test_resolve_not_active() -> None:
    settings = Settings()
    mgr = CameraSessionManager(
        settings=settings,
        vision_algorithm=MagicMock(),
        hikvision_runtime=None,
        result_repository=None,
    )
    with pytest.raises(SurgeryPipelineError) as excinfo:
        await mgr.resolve_pending_confirmation(
            "999999", "p1", chosen_label="纱布", rejected=False
        )
    assert excinfo.value.code == "CONFIRMATION_NOT_ACTIVE"


@pytest.mark.asyncio
async def test_resolve_second_time_not_found() -> None:
    settings = Settings()
    mgr = CameraSessionManager(
        settings=settings,
        vision_algorithm=MagicMock(),
        hikvision_runtime=None,
        result_repository=None,
    )
    st = SurgerySessionState(candidate_consumables=["纱布"])
    pid = "p2"
    st.pending_by_id[pid] = PendingConsumableConfirmation(
        id=pid,
        status="pending",
        options=[("纱布", 0.4)],
        prompt_text="x",
        created_at=datetime.now(timezone.utc),
        model_top1_label="x",
        model_top1_confidence=0.4,
    )
    st.pending_fifo.append(pid)
    mgr._registry._active["123456"] = RunningSurgery(
        stop_event=asyncio.Event(), state=st, tasks=[]
    )
    await mgr.resolve_pending_confirmation(
        "123456", pid, chosen_label="纱布", rejected=False
    )
    with pytest.raises(SurgeryPipelineError) as excinfo:
        await mgr.resolve_pending_confirmation(
            "123456", pid, chosen_label="纱布", rejected=False
        )
    assert excinfo.value.code == "CONFIRMATION_NOT_FOUND"


@pytest.mark.asyncio
async def test_resolve_already_resolved_status() -> None:
    settings = Settings()
    mgr = CameraSessionManager(
        settings=settings,
        vision_algorithm=MagicMock(),
        hikvision_runtime=None,
        result_repository=None,
    )
    st = SurgerySessionState(candidate_consumables=["纱布"])
    pid = "p3"
    pending = PendingConsumableConfirmation(
        id=pid,
        status="pending",
        options=[("纱布", 0.4)],
        prompt_text="x",
        created_at=datetime.now(timezone.utc),
        model_top1_label="x",
        model_top1_confidence=0.4,
    )
    st.pending_by_id[pid] = pending
    st.pending_fifo.append(pid)
    mgr._registry._active["123456"] = RunningSurgery(
        stop_event=asyncio.Event(), state=st, tasks=[]
    )
    pending.status = "confirmed"
    with pytest.raises(SurgeryPipelineError) as excinfo:
        await mgr.resolve_pending_confirmation(
            "123456", pid, chosen_label="纱布", rejected=False
        )
    assert excinfo.value.code == "CONFIRMATION_ALREADY_RESOLVED"