"""工具适配层测试：26 个工具 handler 在 mock 宿主上逐个过一遍 + get_params 回填。

每个工具至少一个用例；变更类工具经 executor 走 adapter.execute 快照批次。
"""
import re

import pytest

from mock_host import MockHostAdapter, decode_png
from quercus_core.tools.executor import HostToolExecutor
from quercus_core.tools.schemas import TOOL_LIST, TOOLS
from quercus_core.types import Action, ActionBatch, Rational


def r(x: int) -> dict:
    return {"num": x, "den": 1}


@pytest.fixture
def fresh():
    """预铺好的 mock 宿主 + 执行器（alpha[0,4) + beta[4,8) 在轨道 1）。"""
    adapter = MockHostAdapter()
    executor = HostToolExecutor(adapter)
    f_alpha, f_beta = adapter.import_footage(["/media/alpha.mp4", "/media/beta.mp4"])
    adapter.execute(
        ActionBatch(
            label="setup",
            actions=[
                Action(
                    tool="place_clip",
                    params={"clip_id": f_alpha, "track_index": 1, "time": r(0), "in_point": r(0), "out_point": r(4)},
                ),
                Action(
                    tool="place_clip",
                    params={"clip_id": f_beta, "track_index": 1, "time": r(4), "in_point": r(0), "out_point": r(4)},
                ),
            ],
        )
    )
    return adapter, executor


def _seq(adapter):
    return adapter.get_project_overview().timeline_ids[0]


def _clips(adapter):
    return adapter.get_timeline_structure(_seq(adapter)).tracks[0].clips


def _exec(executor, tool, **params):
    return executor.execute(Action(tool=tool, params=params))


def test_all_26_tools_registered():
    assert len(TOOLS) == 26
    assert len(TOOL_LIST) == 26


# ---- 工程 ----

def test_open_project(fresh):
    adapter, executor = fresh
    result = _exec(executor, "open_project", path="/tmp/demo.qproj")
    assert result.ok
    assert "已打开" in result.summary
    assert adapter.get_project_overview().name == "demo"


def test_save_project(fresh):
    adapter, executor = fresh
    result = _exec(executor, "save_project", path="/tmp/demo.qproj")
    assert result.ok
    assert adapter._state.project.path == "/tmp/demo.qproj"
    assert adapter._state.project.modified is False


def test_get_project_overview(fresh):
    adapter, executor = fresh
    result = _exec(executor, "get_project_overview")
    assert result.ok
    assert "工程：" in result.summary
    assert "时间线" in result.summary


# ---- 媒体 ----

def test_probe_media(fresh):
    adapter, executor = fresh
    result = _exec(executor, "probe_media", path="/media/alpha.mp4")
    assert result.ok
    assert "分辨率" in result.summary


def test_import_footage(fresh):
    adapter, executor = fresh
    result = _exec(executor, "import_footage", paths=["/media/gamma.mp4"])
    assert result.ok
    assert any("gamma" in it["path"] for it in adapter.list_footage())


def test_list_footage(fresh):
    adapter, executor = fresh
    result = _exec(executor, "list_footage")
    assert result.ok
    assert "2" in result.summary


# ---- 时间线 ----

def test_add_track(fresh):
    adapter, executor = fresh
    result = _exec(executor, "add_track", type="audio")
    assert result.ok
    tl = adapter.get_timeline_structure(_seq(adapter))
    assert any(t.kind == "audio" for t in tl.tracks)


def test_place_clip(fresh):
    adapter, executor = fresh
    fid = adapter.list_footage()[0]["id"]
    result = _exec(executor, "place_clip", clip_id=fid, track_index=2, time=r(0), in_point=r(0), out_point=r(2))
    assert result.ok
    assert "已放置" in result.summary
    tl = adapter.get_timeline_structure(_seq(adapter))
    placed = [c for t in tl.tracks if t.index == 2 for c in t.clips]
    assert len(placed) == 1 and placed[0].duration == Rational(2)


def test_split_clip(fresh):
    adapter, executor = fresh
    clip_id = _clips(adapter)[0].id
    result = _exec(executor, "split_clip", clip_id=clip_id, time=r(2))
    assert result.ok
    assert len(_clips(adapter)) == 3  # 左右两段 + beta


def test_trim_clip(fresh):
    adapter, executor = fresh
    clip_id = _clips(adapter)[0].id
    result = _exec(executor, "trim_clip", clip_id=clip_id, in_point=r(1), duration=r(2))
    assert result.ok
    clip = next(c for c in _clips(adapter) if c.id == clip_id)
    assert clip.duration == Rational(2)
    assert clip.in_point == Rational(1)


def test_move_clip(fresh):
    adapter, executor = fresh
    clip_id = _clips(adapter)[0].id
    result = _exec(executor, "move_clip", clip_id=clip_id, track_index=2, time=r(1))
    assert result.ok
    tl = adapter.get_timeline_structure(_seq(adapter))
    moved = [c for t in tl.tracks if t.index == 2 for c in t.clips]
    assert len(moved) == 1 and moved[0].start == Rational(1)


def test_ripple_delete(fresh):
    adapter, executor = fresh
    clip_a = _clips(adapter)[0].id
    result = _exec(executor, "ripple_delete", clip_ids=[clip_a])
    assert result.ok
    clips = _clips(adapter)
    assert len(clips) == 1
    assert clips[0].start == Rational(0)  # beta 前移到开头（空隙闭合）


def test_add_transition(fresh):
    adapter, executor = fresh
    clip_id = _clips(adapter)[0].id
    result = _exec(executor, "add_transition", clip_id=clip_id, transition_type="cross_dissolve", duration=r(1))
    assert result.ok
    assert "cross_dissolve" in result.summary


def test_add_marker(fresh):
    adapter, executor = fresh
    result = _exec(executor, "add_marker", time=r(1), label="打点", color="red", custom_data={"ai": True})
    assert result.ok
    seq = adapter._must_seq(_seq(adapter))
    assert len(seq.markers) == 1 and seq.markers[0].label == "打点"


# ---- 效果 / 关键帧 ----

def test_add_effect(fresh):
    adapter, executor = fresh
    clip_id = _clips(adapter)[0].id
    result = _exec(executor, "add_effect", clip_id=clip_id, effect_type="brightness")
    assert result.ok
    assert "brightness" in result.summary
    assert len(adapter._must_clip(clip_id).effects) == 1


def test_set_param(fresh):
    adapter, executor = fresh
    clip_id = _clips(adapter)[0].id
    _exec(executor, "add_effect", clip_id=clip_id, effect_type="brightness")
    node = adapter._must_clip(clip_id).effects[0].node_id
    result = _exec(executor, "set_param", effect_id=node, param="level", value=0.5)
    assert result.ok
    assert adapter._must_effect(node).params["level"] == 0.5


def test_set_keyframe(fresh):
    adapter, executor = fresh
    clip_id = _clips(adapter)[0].id
    _exec(executor, "add_effect", clip_id=clip_id, effect_type="brightness")
    node = adapter._must_clip(clip_id).effects[0].node_id
    result = _exec(executor, "set_keyframe", effect_id=node, param="level", time=r(1), value=0.8)
    assert result.ok
    assert adapter._must_effect(node).keyframes["level"][0].value == 0.8


def test_list_effects_available_and_on_clip(fresh):
    adapter, executor = fresh
    result = _exec(executor, "list_effects")
    assert result.ok
    assert "brightness" in result.summary
    clip_id = _clips(adapter)[0].id
    _exec(executor, "add_effect", clip_id=clip_id, effect_type="crop")
    result2 = _exec(executor, "list_effects", clip_id=clip_id)
    assert result2.ok
    assert "crop" in result2.summary


# ---- 取帧 ----

def test_get_frame(fresh):
    adapter, executor = fresh
    result = _exec(executor, "get_frame", time=r(1), max_size={"width": 64, "height": 36})
    assert result.ok
    assert len(result.images) == 1
    assert result.images[0].startswith(b"\x89PNG\r\n\x1a\n")
    decode_png(result.images[0])  # 合法 PNG


def test_scan_timeline(fresh):
    adapter, executor = fresh
    result = _exec(executor, "scan_timeline", range={"start": r(0), "end": r(4)}, count=4)
    assert result.ok
    assert len(result.images) == 4
    for img in result.images:
        decode_png(img)


def test_get_audio_levels(fresh):
    adapter, executor = fresh
    result = _exec(executor, "get_audio_levels", range={"start": r(0), "end": r(4)}, resolution=16)
    assert result.ok
    assert "电平" in result.summary


# ---- 回放 ----

def test_play_pause_seek(fresh):
    adapter, executor = fresh
    assert _exec(executor, "play").ok
    assert _exec(executor, "seek", time=r(2)).ok
    state = adapter.get_state()
    assert state.playing is True and state.position == Rational(2)
    assert _exec(executor, "pause").ok
    assert adapter.get_state().playing is False


# ---- 导出 / 撤销 ----

def test_export_render(fresh):
    adapter, executor = fresh
    result = _exec(executor, "export_render", output="/tmp/out.mp4", preset="h264")
    assert result.ok
    assert "导出" in result.summary


def test_undo_last_action(fresh):
    adapter, executor = fresh
    before = len(_clips(adapter))
    _exec(executor, "add_marker", time=r(1))
    result = _exec(executor, "undo_last_action")
    assert result.ok
    assert len(_clips(adapter)) == before  # 快照恢复到 add_marker 前
    assert "撤销" in result.summary


# ---- get_params 回填（min/max/choices 供未来 schema 回填） ----

def test_get_params_backfill(fresh):
    adapter, executor = fresh
    brightness = executor.get_params("brightness")
    level = next(p for p in brightness if p["name"] == "level")
    assert level["min"] == -1.0 and level["max"] == 1.0
    blend = next(p for p in executor.get_params("overlay") if p["name"] == "blend_mode")
    assert blend["choices"] == ["normal", "screen", "multiply"]
    assert executor.get_params("no_such") == []  # 未知效果类型优雅降级


def test_set_param_rejects_invalid_choice(fresh):
    adapter, executor = fresh
    clip_id = _clips(adapter)[0].id
    _exec(executor, "add_effect", clip_id=clip_id, effect_type="overlay")
    node = adapter._must_clip(clip_id).effects[0].node_id
    result = _exec(executor, "set_param", effect_id=node, param="blend_mode", value="blur")
    assert result.ok is False
    assert "非法" in result.summary or "失败" in result.summary


# ---- 批级执行（一个批次一个快照） ----

def test_execute_batch_single_snapshot(fresh):
    adapter, executor = fresh
    before = len(executor.list_snapshots())
    batch = ActionBatch(
        label="two-markers",
        session_id=executor.session_id,
        actions=[
            Action(tool="add_marker", params={"time": r(1), "label": "m1"}),
            Action(tool="add_marker", params={"time": r(2), "label": "m2"}),
        ],
    )
    results = executor.execute_batch(batch)
    assert all(res.ok for res in results)
    assert len(executor.list_snapshots()) == before + 1  # 一批次一个快照


# ---- AgentLoop 集成：mock LLM 派发到 executor ----

def test_agent_loop_with_host_executor(fresh):
    from mock_llm import MockProvider
    from quercus_core.agent.loop import AgentLoop
    from quercus_core.providers.base import AssistantTurn, ToolCall

    adapter, executor = fresh
    fid = adapter.list_footage()[0]["id"]
    mock = MockProvider(
        script=[
            AssistantTurn(
                text="",
                tool_calls=(
                    ToolCall(
                        id="c1",
                        name="add_marker",
                        arguments={"time": {"num": 3, "den": 1}, "label": "AI 打点"},
                    ),
                    ToolCall(
                        id="c2",
                        name="get_frame",
                        arguments={"time": {"num": 1, "den": 1}, "max_size": {"width": 64, "height": 36}},
                    ),
                ),
            ),
            AssistantTurn(text="完成", tool_calls=()),
        ]
    )
    loop = AgentLoop(provider=mock, executor=executor, confirm=lambda batch: True)
    result = loop.run("在 3 秒处打点并看一眼画面")
    assert result.turns == 2
    seq = adapter._must_seq(_seq(adapter))
    assert any(m.label == "AI 打点" for m in seq.markers)  # 变更已生效
    # get_frame 的 PNG 回喂给 provider
    last = mock.observed[-1]
    tool_msgs = [m for m in last if m.role == "tool"]
    frame_msg = next(m for m in tool_msgs if m.name == "get_frame")
    assert len(frame_msg.images) == 1