from mulit_agent_app.application.agent_service import AgentService
from mulit_agent_app.config import AgentConfig
from mulit_agent_app.infrastructure.database import AgentDatabase


class _Session:
    def __init__(self) -> None:
        self.acks: list[tuple[str, str, str]] = []

    def send_skill_ack(self, skill_id: str, status: str, error: str = "") -> None:
        self.acks.append((skill_id, status, error))


class _Executor:
    def __init__(self) -> None:
        self.prefix = ""

    def set_instruction_prefix(self, value: str) -> None:
        self.prefix = value


def test_chinese_skill_name_installs_and_empty_snapshot_removes_it(tmp_path):
    config = AgentConfig(tmp_path, tmp_path / "settings.json", tmp_path / "agent.sqlite3", tmp_path / "agent.log")
    service = AgentService.__new__(AgentService)
    service._config = config
    service._database = AgentDatabase(config.database_path)
    service._database.initialize()
    service.session = _Session()
    service.task_executor = _Executor()
    content = "# 图生图工具\n\n仅用于测试。"
    skill_id = "a" * 32

    service.apply_skill_snapshot(
        {
            "skills": [
                {
                    "id": skill_id,
                    "name": "图生图工具",
                    "version": "0.3.2",
                    "content": content,
                    # 校验值只供协议兼容；Agent 必须接受控制端内容并覆盖本地文件。
                    "checksum": "outdated-checksum",
                }
            ]
        }
    )

    assert (config.data_dir / "skills" / skill_id / "SKILL.md").read_text(encoding="utf-8") == content
    assert service._database.get_meta(f"skill.{skill_id}.name") == "图生图工具"
    assert service.session.acks == [(skill_id, "applied", "")]

    # 人工本地改动不是错误；下一份控制端快照应直接覆盖它。
    target = config.data_dir / "skills" / skill_id / "SKILL.md"
    target.write_text("# 本地临时修改", encoding="utf-8")
    replacement = "# 总控下发版本\n\n应覆盖本地内容。"
    service.apply_skill_snapshot(
        {
            "skills": [
                {
                    "id": skill_id,
                    "name": "图生图工具",
                    "version": "0.3.3",
                    "content": replacement,
                    "checksum": "another-outdated-checksum",
                }
            ]
        }
    )

    assert target.read_text(encoding="utf-8") == replacement
    assert service.session.acks[-1] == (skill_id, "applied", "")

    service.apply_skill_snapshot({"skills": []})

    assert not (config.data_dir / "skills" / skill_id).exists()
    assert service._database.get_meta(f"skill.{skill_id}.name") == ""