from __future__ import annotations

import os
import sys
import unittest
from pathlib import Path
from types import SimpleNamespace
from unittest.mock import AsyncMock, patch


BACKEND_DIR = Path(__file__).resolve().parents[1]
os.environ["KEFU_DB_TYPE"] = "sqlite"
os.environ["KEFU_DATABASE_URL"] = ""
os.environ["KEFU_DB_PATH"] = str(BACKEND_DIR / "kefu.db")
if str(BACKEND_DIR) not in sys.path:
    sys.path.insert(0, str(BACKEND_DIR))

import main


def _queue_item(account_id: int, job_id: str = "job-1") -> dict:
    return {
        "job_id": job_id,
        "account_id": account_id,
        "position": 1,
        "status": "waiting",
        "expedited": False,
        "description": "回复 测试用户",
        "sender_name": "测试用户",
        "sender_id": "peer-1",
        "sender_avatar": None,
        "conversation_id": "conv-1",
        "incoming_content": "你好",
        "incoming_contents": ["你好", "第二条"],
        "message_count": 2,
        "replies": ["您好"],
        "interval_seconds": 60,
        "enqueued_at": "2026-07-20T10:00:00+00:00",
        "scheduled_at": "2026-07-20T10:01:00+00:00",
        "remaining_seconds": 60,
    }


class _FakeService:
    def __init__(self, account_id: int, items=None, action=None):
        self.account_id = account_id
        self._running = True
        self.items = list(items or [])
        self.action = action or {
            "status": "accepted",
            "job_id": "job-1",
            "shifted_count": 2,
        }

    async def get_reply_queue_snapshot(self):
        return list(self.items)

    async def send_queued_reply_now(self, job_id: str):
        return {**self.action, "job_id": job_id}


class ReplyQueueApiTests(unittest.IsolatedAsyncioTestCase):
    async def asyncSetUp(self):
        self.original_workers = main.manager.workers
        main.manager.workers = {}

    async def asyncTearDown(self):
        main.manager.workers = self.original_workers

    async def test_summary_filters_accounts_by_owner_scope(self):
        service_one = _FakeService(1, [_queue_item(1)])
        service_two = _FakeService(2, [_queue_item(2, "job-2")])
        main.manager.workers = {
            1: SimpleNamespace(is_running=True, _im_service=service_one),
            2: SimpleNamespace(is_running=True, _im_service=service_two),
        }

        with patch.object(main, "owned_account_ids", AsyncMock(return_value={1})):
            response = await main.get_reply_queue_summaries(
                db=object(),
                user=SimpleNamespace(id=10, role="operator"),
            )

        self.assertEqual(response.total_pending, 1)
        self.assertEqual([item.account_id for item in response.items], [1])

    async def test_offline_account_detail_returns_empty_snapshot(self):
        account = SimpleNamespace(id=1, reply_delay_seconds=0)
        with (
            patch.object(main, "get_owned_account", AsyncMock(return_value=account)),
            patch.object(main, "_global_reply_delay_seconds", return_value=0),
        ):
            response = await main.get_account_reply_queue(
                account_id=1,
                db=object(),
                user=SimpleNamespace(id=10, role="operator"),
            )

        self.assertFalse(response.running)
        self.assertEqual(response.pending_count, 0)
        self.assertEqual(response.items, [])

    async def test_detail_preserves_merged_incoming_messages(self):
        account = SimpleNamespace(id=1, reply_delay_seconds=60)
        service = _FakeService(1, [_queue_item(1)])
        main.manager.workers = {
            1: SimpleNamespace(is_running=True, _im_service=service),
        }
        with (
            patch.object(main, "get_owned_account", AsyncMock(return_value=account)),
            patch.object(main, "_resolve_effective_reply_delay", return_value=60),
        ):
            response = await main.get_account_reply_queue(
                account_id=1,
                db=object(),
                user=SimpleNamespace(id=10, role="operator"),
            )

        self.assertEqual(response.pending_count, 1)
        self.assertEqual(response.items[0].incoming_contents, ["你好", "第二条"])
        self.assertEqual(response.items[0].message_count, 2)
        self.assertEqual(response.items[0].replies, ["您好"])

    async def test_send_now_returns_shifted_count(self):
        service = _FakeService(1)
        main.manager.workers = {
            1: SimpleNamespace(is_running=True, _im_service=service),
        }
        with (
            patch.object(main, "get_owned_account", AsyncMock(return_value=SimpleNamespace(id=1))),
            patch.object(main.system_logger, "record"),
        ):
            response = await main.send_account_queued_reply_now(
                account_id=1,
                job_id="job-1",
                db=object(),
                user=SimpleNamespace(id=10, role="operator"),
            )

        self.assertEqual(response.status, "accepted")
        self.assertEqual(response.shifted_count, 2)

    async def test_cross_account_or_finished_job_returns_not_found(self):
        service = _FakeService(1, action={"status": "not_found"})
        main.manager.workers = {
            1: SimpleNamespace(is_running=True, _im_service=service),
        }
        with patch.object(
            main,
            "get_owned_account",
            AsyncMock(return_value=SimpleNamespace(id=1)),
        ):
            with self.assertRaises(main.HTTPException) as caught:
                await main.send_account_queued_reply_now(
                    account_id=1,
                    job_id="other-account-job",
                    db=object(),
                    user=SimpleNamespace(id=10, role="operator"),
                )

        self.assertEqual(caught.exception.status_code, 404)


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