"""edit_plan_clip 单测.

domain 层剪辑计划片段纯逻辑模块，0 外部依赖。
覆盖：枚举常量、create工厂/校验、素材分配、状态流转、属性计算。
"""

from __future__ import annotations

from packages.domain.edit_plan_clip import EditPlanClip, EditPlanClipStatus


class TestEditPlanClipStatus:
    """EditPlanClipStatus 枚举测试."""

    def test_four_statuses(self):
        """四种状态."""
        assert len(EditPlanClipStatus) == 4

    def test_pending(self):
        """pending 状态."""
        assert EditPlanClipStatus.PENDING == "pending"

    def test_ready(self):
        """ready 状态."""
        assert EditPlanClipStatus.READY == "ready"

    def test_rendered(self):
        """rendered 状态."""
        assert EditPlanClipStatus.RENDERED == "rendered"

    def test_failed(self):
        """failed 状态."""
        assert EditPlanClipStatus.FAILED == "failed"

    def test_is_string(self):
        """枚举值是字符串."""
        for status in EditPlanClipStatus:
            assert isinstance(status.value, str)
            assert len(status.value) > 0

    def test_str_compatible(self):
        """StrEnum 可与字符串比较."""
        assert EditPlanClipStatus.PENDING == "pending"
        assert EditPlanClipStatus.READY + "" == "ready"


class TestEditPlanClipCreate:
    """EditPlanClip.create 工厂方法测试."""

    def test_create_minimal(self):
        """最简创建."""
        clip = EditPlanClip.create(plan_id="plan1", clip_type="video", order=0)
        assert clip.plan_id == "plan1"
        assert clip.clip_type == "video"
        assert clip.order == 0
        assert clip.status == EditPlanClipStatus.PENDING
        assert clip.template_clip_config_id == ""
        assert clip.asset_id == ""
        assert clip.text_content == ""
        assert clip.start_time == 0.0
        assert clip.duration == 0.0
        assert clip.transition_effect == "cut"
        assert clip.config == {}
        assert isinstance(clip.id, str)
        assert len(clip.id) > 0

    def test_create_with_all_fields(self):
        """带全部字段创建."""
        clip = EditPlanClip.create(
            plan_id="plan1",
            clip_type="video",
            order=2,
            template_clip_config_id="tpl1",
            asset_id="asset1",
            text_content="  你好世界  ",
            start_time=10.5,
            duration=5.0,
            transition_effect="fade",
            config={"key": "value"},
        )
        assert clip.order == 2
        assert clip.template_clip_config_id == "tpl1"
        assert clip.asset_id == "asset1"
        assert clip.text_content == "你好世界"  # strip了
        assert clip.start_time == 10.5
        assert clip.duration == 5.0
        assert clip.transition_effect == "fade"
        assert clip.config == {"key": "value"}

    def test_create_strips_ids(self):
        """plan_id 和 clip_type 会 strip."""
        clip = EditPlanClip.create(plan_id="  plan1  ", clip_type="  video  ", order=0)
        assert clip.plan_id == "plan1"
        assert clip.clip_type == "video"

    def test_create_empty_plan_id(self):
        """空 plan_id 无效."""
        try:
            EditPlanClip.create(plan_id="", clip_type="video", order=0)
            assert False
        except ValueError as e:
            assert "plan_id" in str(e)

    def test_create_whitespace_plan_id(self):
        """纯空白 plan_id 无效."""
        try:
            EditPlanClip.create(plan_id="   ", clip_type="video", order=0)
            assert False
        except ValueError as e:
            assert "plan_id" in str(e)

    def test_create_empty_clip_type(self):
        """空 clip_type 无效."""
        try:
            EditPlanClip.create(plan_id="p1", clip_type="", order=0)
            assert False
        except ValueError as e:
            assert "clip_type" in str(e)

    def test_create_whitespace_clip_type(self):
        """纯空白 clip_type 无效."""
        try:
            EditPlanClip.create(plan_id="p1", clip_type="   ", order=0)
            assert False
        except ValueError as e:
            assert "clip_type" in str(e)

    def test_create_negative_start_time(self):
        """start_time 为负无效."""
        try:
            EditPlanClip.create(plan_id="p1", clip_type="v", order=0, start_time=-1.0)
            assert False
        except ValueError as e:
            assert "start_time" in str(e)

    def test_create_negative_duration(self):
        """duration 为负无效."""
        try:
            EditPlanClip.create(plan_id="p1", clip_type="v", order=0, duration=-1.0)
            assert False
        except ValueError as e:
            assert "duration" in str(e)

    def test_create_zero_duration_valid(self):
        """duration 为 0 合法."""
        clip = EditPlanClip.create(plan_id="p1", clip_type="v", order=0, duration=0.0)
        assert clip.duration == 0.0

    def test_create_empty_transition_defaults_to_cut(self):
        """空 transition_effect 默认 cut."""
        clip = EditPlanClip.create(plan_id="p1", clip_type="v", order=0, transition_effect="")
        assert clip.transition_effect == "cut"

    def test_create_whitespace_transition_defaults_to_cut(self):
        """空白 transition_effect 默认 cut."""
        clip = EditPlanClip.create(plan_id="p1", clip_type="v", order=0, transition_effect="   ")
        assert clip.transition_effect == "cut"

    def test_create_config_none_defaults_empty_dict(self):
        """config=None 默认为空 dict."""
        clip = EditPlanClip.create(plan_id="p1", clip_type="v", order=0, config=None)
        assert clip.config == {}

    def test_create_unique_id(self):
        """不同 clip id 不同."""
        c1 = EditPlanClip.create("p1", "v", 0)
        c2 = EditPlanClip.create("p1", "v", 0)
        assert c1.id != c2.id

    def test_create_has_timestamps(self):
        """有创建和更新时间."""
        clip = EditPlanClip.create("p1", "v", 0)
        assert clip.created_at is not None
        assert clip.updated_at is not None

    def test_create_negative_order_valid(self):
        """order 可以为负（表示排序位置）."""
        clip = EditPlanClip.create(plan_id="p1", clip_type="v", order=-1)
        assert clip.order == -1


class TestEditPlanClipAssignAsset:
    """素材分配测试."""

    def _make_clip(self):
        return EditPlanClip.create(plan_id="p1", clip_type="video", order=0)

    def test_assign_asset(self):
        """正常分配素材."""
        clip = self._make_clip()
        old_updated = clip.updated_at
        clip.assign_asset("asset123")
        assert clip.asset_id == "asset123"
        assert clip.updated_at >= old_updated

    def test_assign_asset_strips(self):
        """asset_id 会 strip."""
        clip = self._make_clip()
        clip.assign_asset("  asset123  ")
        assert clip.asset_id == "asset123"

    def test_assign_asset_empty(self):
        """空 asset_id 无效."""
        clip = self._make_clip()
        try:
            clip.assign_asset("")
            assert False
        except ValueError as e:
            assert "asset_id" in str(e)

    def test_assign_asset_whitespace(self):
        """纯空白 asset_id 无效."""
        clip = self._make_clip()
        try:
            clip.assign_asset("   ")
            assert False
        except ValueError as e:
            assert "asset_id" in str(e)

    def test_has_asset_false_initially(self):
        """初始无素材."""
        clip = self._make_clip()
        assert clip.has_asset is False

    def test_has_asset_true_after_assign(self):
        """分配后有素材."""
        clip = self._make_clip()
        clip.assign_asset("a1")
        assert clip.has_asset is True


class TestEditPlanClipStatusFlow:
    """状态流转测试."""

    def _make_clip(self):
        return EditPlanClip.create(plan_id="p1", clip_type="video", order=0)

    def test_initial_status_pending(self):
        """初始状态 pending."""
        clip = self._make_clip()
        assert clip.status == EditPlanClipStatus.PENDING

    def test_pending_to_ready(self):
        """pending -> ready."""
        clip = self._make_clip()
        clip.mark_ready()
        assert clip.status == EditPlanClipStatus.READY

    def test_ready_to_rendered(self):
        """ready -> rendered."""
        clip = self._make_clip()
        clip.mark_ready()
        clip.mark_rendered()
        assert clip.status == EditPlanClipStatus.RENDERED

    def test_ready_to_failed(self):
        """ready -> failed."""
        clip = self._make_clip()
        clip.mark_ready()
        clip.mark_failed()
        assert clip.status == EditPlanClipStatus.FAILED

    def test_cannot_ready_from_rendered(self):
        """rendered 状态不能再 mark_ready."""
        clip = self._make_clip()
        clip.mark_ready()
        clip.mark_rendered()
        try:
            clip.mark_ready()
            assert False
        except ValueError as e:
            assert "pending" in str(e).lower()

    def test_cannot_ready_from_failed(self):
        """failed 状态不能 mark_ready."""
        clip = self._make_clip()
        clip.mark_ready()
        clip.mark_failed()
        try:
            clip.mark_ready()
            assert False
        except ValueError as e:
            assert "pending" in str(e).lower()

    def test_cannot_render_from_pending(self):
        """pending 不能直接 mark_rendered."""
        clip = self._make_clip()
        try:
            clip.mark_rendered()
            assert False
        except ValueError as e:
            assert "ready" in str(e).lower()

    def test_cannot_failed_from_pending(self):
        """pending 不能直接 mark_failed."""
        clip = self._make_clip()
        try:
            clip.mark_failed()
            assert False
        except ValueError as e:
            assert "ready" in str(e).lower()

    def test_status_change_updates_timestamp(self):
        """状态变更更新 updated_at."""
        clip = self._make_clip()
        old_updated = clip.updated_at
        clip.mark_ready()
        assert clip.updated_at >= old_updated


class TestEditPlanClipProperties:
    """属性计算测试."""

    def test_end_time(self):
        """end_time = start_time + duration."""
        clip = EditPlanClip.create(
            plan_id="p1",
            clip_type="v",
            order=0,
            start_time=10.0,
            duration=5.5,
        )
        assert clip.end_time == 15.5

    def test_end_time_zero_duration(self):
        """零时长 end_time = start_time."""
        clip = EditPlanClip.create(
            plan_id="p1",
            clip_type="v",
            order=0,
            start_time=10.0,
            duration=0.0,
        )
        assert clip.end_time == 10.0

    def test_end_time_zero_start(self):
        """零起点 end_time = duration."""
        clip = EditPlanClip.create(
            plan_id="p1",
            clip_type="v",
            order=0,
            start_time=0.0,
            duration=7.0,
        )
        assert clip.end_time == 7.0

    def test_has_asset_empty_string(self):
        """空字符串无素材."""
        clip = EditPlanClip.create(plan_id="p1", clip_type="v", order=0, asset_id="")
        assert clip.has_asset is False

    def test_has_asset_with_value(self):
        """有值则有素材."""
        clip = EditPlanClip.create(plan_id="p1", clip_type="v", order=0, asset_id="a1")
        assert clip.has_asset is True

    def test_config_independent_between_clips(self):
        """不同 clip 的 config 独立."""
        c1 = EditPlanClip.create(plan_id="p1", clip_type="v", order=0)
        c2 = EditPlanClip.create(plan_id="p1", clip_type="v", order=1)
        c1.config["key"] = "value"
        assert "key" not in c2.config
