"""generation_task 单测.

domain 层生成任务实体纯逻辑模块，0 外部依赖。
覆盖：枚举、create工厂/校验、列表拷贝。
"""

from __future__ import annotations

from packages.domain.generation_task import GenerationTask, GenerationTaskStatus


class TestGenerationTaskStatus:
    """GenerationTaskStatus 枚举测试."""

    def test_five_statuses(self):
        """五种状态."""
        assert len(GenerationTaskStatus) == 5

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

    def test_running(self):
        assert GenerationTaskStatus.RUNNING == "running"

    def test_completed(self):
        assert GenerationTaskStatus.COMPLETED == "completed"

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

    def test_cancelled(self):
        assert GenerationTaskStatus.CANCELLED == "cancelled"


class TestGenerationTaskCreate:
    """GenerationTask.create 工厂测试."""

    def test_create_minimal(self):
        """最简创建（project_id + asset_library_id）."""
        task = GenerationTask.create(project_id="proj1", asset_library_id="lib1")
        assert task.project_id == "proj1"
        assert task.asset_library_id == "lib1"
        assert task.status == GenerationTaskStatus.PENDING
        assert task.progress == 0.0
        assert task.result_count == 0
        assert task.error_message == ""
        assert task.asset_ids == []
        assert task.title_ids == []
        assert task.voice_ids == []
        assert isinstance(task.id, str)
        assert len(task.id) > 0

    def test_create_with_all_fields(self):
        """带全部字段创建."""
        task = GenerationTask.create(
            project_id="  proj1  ",
            asset_library_id="  lib1  ",
            strategy_id="  strat1  ",
            voice_library_id="  vlib1  ",
            template_id="  tpl1  ",
            asset_ids=["a1", "a2", "a3"],
            title_ids=["t1", "t2"],
            voice_ids=["v1"],
            created_by_user_id="  user1  ",
            source_edit_plan_id="  plan1  ",
            asset_select_mode="smart",
            batch_id="batch1",
        )
        assert task.project_id == "proj1"
        assert task.asset_library_id == "lib1"
        assert task.strategy_id == "strat1"
        assert task.voice_library_id == "vlib1"
        assert task.template_id == "tpl1"
        assert task.asset_ids == ["a1", "a2", "a3"]
        assert task.title_ids == ["t1", "t2"]
        assert task.voice_ids == ["v1"]
        assert task.created_by_user_id == "user1"
        assert task.source_edit_plan_id == "plan1"
        assert task.asset_select_mode == "smart"
        assert task.batch_id == "batch1"

    def test_create_with_template_instead_of_project(self):
        """有 template_id 但 project_id 为空也可以."""
        task = GenerationTask.create(
            project_id="",
            asset_library_id="lib1",
            template_id="tpl1",
        )
        assert task.template_id == "tpl1"
        assert task.project_id == ""

    def test_create_neither_project_nor_template(self):
        """project_id 和 template_id 都为空，抛错."""
        try:
            GenerationTask.create(project_id="", asset_library_id="lib1")
            assert False
        except ValueError as e:
            assert "project_id" in str(e) and "template_id" in str(e)

    def test_create_whitespace_project_and_template(self):
        """都是空白也抛错."""
        try:
            GenerationTask.create(project_id="   ", asset_library_id="lib1", template_id="   ")
            assert False
        except ValueError as e:
            assert "project_id" in str(e) and "template_id" in str(e)

    def test_create_no_asset_library_and_no_ids(self):
        """asset_library_id 为空且没有素材列表，抛错."""
        try:
            GenerationTask.create(project_id="p1", asset_library_id="")
            assert False
        except ValueError as e:
            assert "asset_library_id" in str(e)

    def test_create_whitespace_asset_library_and_no_ids(self):
        """空白 asset_library 且无素材列表，抛错."""
        try:
            GenerationTask.create(project_id="p1", asset_library_id="   ")
            assert False
        except ValueError as e:
            assert "asset_library_id" in str(e)

    def test_create_with_asset_ids_instead_of_library(self):
        """用 asset_ids 替代 asset_library_id."""
        task = GenerationTask.create(
            project_id="p1",
            asset_library_id="",
            asset_ids=["a1", "a2"],
        )
        assert task.asset_library_id == ""
        assert task.asset_ids == ["a1", "a2"]

    def test_create_with_title_ids_instead_of_library(self):
        """用 title_ids 替代 asset_library_id."""
        task = GenerationTask.create(
            project_id="p1",
            asset_library_id="",
            title_ids=["t1"],
        )
        assert task.title_ids == ["t1"]

    def test_create_with_voice_ids_instead_of_library(self):
        """用 voice_ids 替代 asset_library_id."""
        task = GenerationTask.create(
            project_id="p1",
            asset_library_id="",
            voice_ids=["v1"],
        )
        assert task.voice_ids == ["v1"]

    def test_create_asset_ids_copied(self):
        """asset_ids 是拷贝不是引用."""
        original = ["a1", "a2"]
        task = GenerationTask.create(project_id="p1", asset_library_id="lib1", asset_ids=original)
        original.append("a3")
        assert task.asset_ids == ["a1", "a2"]

    def test_create_title_ids_copied(self):
        """title_ids 是拷贝不是引用."""
        original = ["t1"]
        task = GenerationTask.create(project_id="p1", asset_library_id="lib1", title_ids=original)
        original.append("t2")
        assert task.title_ids == ["t1"]

    def test_create_voice_ids_copied(self):
        """voice_ids 是拷贝不是引用."""
        original = ["v1"]
        task = GenerationTask.create(project_id="p1", asset_library_id="lib1", voice_ids=original)
        original.append("v2")
        assert task.voice_ids == ["v1"]

    def test_create_none_lists_default_empty(self):
        """None 列表默认为空."""
        task = GenerationTask.create(
            project_id="p1",
            asset_library_id="lib1",
            asset_ids=None,
            title_ids=None,
            voice_ids=None,
        )
        assert task.asset_ids == []
        assert task.title_ids == []
        assert task.voice_ids == []

    def test_create_unique_id(self):
        """不同任务 id 不同."""
        t1 = GenerationTask.create("p", "l")
        t2 = GenerationTask.create("p", "l")
        assert t1.id != t2.id

    def test_create_has_created_at(self):
        """有创建时间."""
        task = GenerationTask.create("p", "l")
        assert task.created_at is not None

    def test_create_defaults_started_completed_none(self):
        """started_at 和 completed_at 默认 None."""
        task = GenerationTask.create("p", "l")
        assert task.started_at is None
        assert task.completed_at is None

    def test_empty_lists_independent(self):
        """不同任务的空列表互不影响."""
        t1 = GenerationTask.create("p", "l")
        t2 = GenerationTask.create("p", "l")
        t1.asset_ids.append("x")
        assert t2.asset_ids == []
