"""agent 版本钉选 v4 单测：文件选择、版本一致、@ 语法、歧义拒绝。

运行（在仓库根目录下）：
    python3 -m unittest discover -s cloud/tests -p "test_agent_version.py" -v

说明：helper 部分用临时 agents 目录（不碰仓库注册表），
服务端点部分用 create_server 本地 HTTP（test_task_options
同款），仓库自带快照 agents/research-brief.v1.json 作
钉选夹具。关键断言：缺快照绝不回落默认文件；文件内
version 与请求不一致即 400；@ 与 agent_version 不一致
即 400；inline agent 配 agent_version 即 400；钉选存库
的 agent_name 是基本名、不是 @ 写法。
"""

import http.client
import json
import os
import sys
import tempfile
import threading
import unittest
from pathlib import Path

try:
    from cloud.agent_def import list_known_skills
    from cloud.agent_def import resolve_registry_agent
    from cloud.auth import AuthStore
    from cloud.server import create_server
except ImportError:
    sys.path.insert(0, str(Path(__file__).resolve().parents[2]))
    from cloud.agent_def import list_known_skills
    from cloud.agent_def import resolve_registry_agent
    from cloud.auth import AuthStore
    from cloud.server import create_server


def _write_definition(directory, filename, name="demo", version="v1"):
    with open(os.path.join(directory, filename),
              "w", encoding="utf-8") as fh:
        json.dump({"name": name, "version": version,
                   "skills": [], "tools": [],
                   "defaults": {"effort": "low"}}, fh)


class ResolveTestCase(unittest.TestCase):
    def setUp(self):
        self.tmp = tempfile.TemporaryDirectory()
        self.dir = self.tmp.name
        _write_definition(self.dir, "demo.json", version="v1")
        _write_definition(self.dir, "demo.v2.json", version="v2")
        _write_definition(self.dir, "demo.v9.json", version="v1")

    def tearDown(self):
        self.tmp.cleanup()

    def test_unpinned_and_pinned(self):
        self.assertEqual(
            resolve_registry_agent("demo", agents_dir=self.dir).version,
            "v1")
        self.assertEqual(
            resolve_registry_agent("demo", version="v2",
                                   agents_dir=self.dir).version, "v2")
        self.assertEqual(
            resolve_registry_agent("demo@v2",
                                   agents_dir=self.dir).version, "v2")

    def test_missing_snapshot_never_falls_back(self):
        with self.assertRaises(ValueError):
            resolve_registry_agent("demo", version="v3",
                                   agents_dir=self.dir)

    def test_file_version_mismatch_rejected(self):
        with self.assertRaises(ValueError):
            resolve_registry_agent("demo", version="v9",
                                   agents_dir=self.dir)

    def test_at_and_version_conflict_and_bad_version(self):
        with self.assertRaises(ValueError):
            resolve_registry_agent("demo@v2", version="v1",
                                   agents_dir=self.dir)
        with self.assertRaises(ValueError):
            resolve_registry_agent("demo", version="../x",
                                   agents_dir=self.dir)
        with self.assertRaises(ValueError):
            resolve_registry_agent("demo@", agents_dir=self.dir)
        with self.assertRaises(ValueError):
            resolve_registry_agent("demo@v2@v3",
                                   agents_dir=self.dir)


class ServerVersionTestCase(unittest.TestCase):
    def setUp(self):
        self.tmp = tempfile.TemporaryDirectory()
        self.db_path = os.path.join(self.tmp.name, "control.db")
        self.auth = AuthStore(self.db_path)
        self.owner_id, self.owner_key = self.auth.create_user("owner")
        self.server = create_server(self.db_path, "127.0.0.1", 0)
        self.port = self.server.server_address[1]
        self.thread = threading.Thread(
            target=self.server.serve_forever, daemon=True)
        self.thread.start()
        status, self.project = self._req(
            "POST", "/projects", {"name": "demo"}, self.owner_key)
        self.assertEqual(status, 201)

    def tearDown(self):
        self.server.shutdown()
        self.server.server_close()
        self.thread.join(timeout=5)
        try:
            self.auth.conn.close()
        except Exception:
            pass
        self.tmp.cleanup()

    def _req(self, method, path, body=None, key=None):
        conn = http.client.HTTPConnection("127.0.0.1", self.port, timeout=10)
        headers = {"Content-Type": "application/json"}
        if key:
            headers["X-API-Key"] = key
        conn.request(method, path,
                     json.dumps(body) if body is not None else None, headers)
        resp = conn.getresponse()
        raw = resp.read()
        conn.close()
        try:
            data = json.loads(raw)
        except ValueError:
            data = None
        return resp.status, data

    def _list_tasks(self):
        status, data = self._req(
            "GET", "/tasks?project_id=" + self.project["id"],
            key=self.owner_key)
        self.assertEqual(status, 200)
        return data["tasks"]

    def test_pinned_by_field_and_at_syntax(self):
        for body in (
                {"agent_name": "research-brief", "agent_version": "v1"},
                {"agent_name": "research-brief@v1"},
        ):
            status, task = self._req("POST", "/tasks", {
                "project_id": self.project["id"], "prompt": "hi",
                **body}, self.owner_key)
            self.assertEqual(status, 201, task)
            self.assertEqual(task["agent_name"], "research-brief")
            self.assertEqual(task["agent_version"], "v1")

    def test_pinned_missing_and_inline_version_rejected(self):
        for body in (
                {"agent_name": "research-brief", "agent_version": "v999"},
                {"agent_name": "research-brief@v2",
                 "agent_version": "v1"},
                {"agent": {"name": "research-brief", "version": "v1"},
                 "agent_version": "v1"},
        ):
            status, _data = self._req("POST", "/tasks", {
                "project_id": self.project["id"], "prompt": "hi",
                **body}, self.owner_key)
            self.assertEqual(status, 400, body)
        self.assertEqual(self._list_tasks(), [])