"""云端合并状态端点测试：POST /tasks/{id}/merge。

只测状态同步本身，不执行真实合并：合并仍由 host.py merge
（本地或 Docker 容器内）执行，成功后再调本接口把云端
任务从 completed 改为 merged。规则：404/401/403/409
语义、maintainer 以上才能合并、审计里有 merge_task。
"""

import http.client
import json
import os
import sqlite3
import sys
import tempfile
import threading
import unittest
from pathlib import Path

try:
    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.auth import AuthStore
    from cloud.server import create_server


class MergeTestCase(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.maint_id, self.maint_key = self.auth.create_user("maint")
        self.contrib_id, self.contrib_key = self.auth.create_user("contrib")
        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)
        self.auth.set_member(
            self.project["id"], self.owner_id, self.maint_id, "maintainer")
        self.auth.set_member(
            self.project["id"], self.owner_id, self.contrib_id, "contributor")

    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)
        hdrs = {}
        payload = None
        if body is not None:
            payload = json.dumps(body).encode("utf-8")
            hdrs["Content-Type"] = "application/json"
        if key is not None:
            hdrs["X-API-Key"] = key
        try:
            conn.request(method, path, body=payload, headers=hdrs)
            resp = conn.getresponse()
            data = resp.read()
        finally:
            conn.close()
        try:
            parsed = json.loads(data.decode("utf-8")) if data else None
        except ValueError:
            parsed = None
        return resp.status, parsed

    def _completed_task(self):
        status, task = self._req(
            "POST", "/tasks",
            {"project_id": self.project["id"], "prompt": "x"},
            self.owner_key)
        self.assertEqual(status, 201)
        conn = sqlite3.connect(self.db_path)
        try:
            conn.execute(
                "UPDATE tasks SET status = 'completed' WHERE id = ?",
                (task["id"],))
            conn.commit()
        finally:
            conn.close()
        return task

    def test_merge_completed_by_owner(self):
        task = self._completed_task()
        status, merged = self._req(
            "POST", "/tasks/%s/merge" % task["id"], {}, self.owner_key)
        self.assertEqual(status, 200)
        self.assertEqual(merged["status"], "merged")
        status, got = self._req(
            "GET", "/tasks/%s" % task["id"], key=self.owner_key)
        self.assertEqual(merged["status"], got["status"])
        audit = self.auth.list_audit(self.project["id"])
        self.assertTrue(any(a["action"] == "merge_task" for a in audit))

    def test_merge_by_maintainer_ok_contributor_forbidden(self):
        task = self._completed_task()
        status, body = self._req(
            "POST", "/tasks/%s/merge" % task["id"], {}, self.contrib_key)
        self.assertEqual(status, 403)
        status, merged = self._req(
            "POST", "/tasks/%s/merge" % task["id"], {}, self.maint_key)
        self.assertEqual(status, 200)
        self.assertEqual(merged["status"], "merged")

    def test_merge_non_completed_409_and_repeat_409(self):
        status, task = self._req(
            "POST", "/tasks",
            {"project_id": self.project["id"], "prompt": "x"},
            self.owner_key)
        self.assertEqual(status, 201)
        status, body = self._req(
            "POST", "/tasks/%s/merge" % task["id"], {}, self.owner_key)
        self.assertEqual(status, 409)
        self.assertEqual(body["status"], "queued")
        done = self._completed_task()
        status, _ = self._req(
            "POST", "/tasks/%s/merge" % done["id"], {}, self.owner_key)
        self.assertEqual(status, 200)
        status, body = self._req(
            "POST", "/tasks/%s/merge" % done["id"], {}, self.owner_key)
        self.assertEqual(status, 409)
        self.assertEqual(body["status"], "merged")

    def test_merge_missing_and_no_key(self):
        status, _ = self._req(
            "POST", "/tasks/nope/merge", {}, self.owner_key)
        self.assertEqual(status, 404)
        task = self._completed_task()
        status, _ = self._req("POST", "/tasks/%s/merge" % task["id"], {})
        self.assertEqual(status, 401)


if __name__ == "__main__":
    unittest.main()