import asyncio
from unittest.mock import AsyncMock, patch, MagicMock
from db.models import AIProviderProfile
from core.llm import LLMClient
from services.admin_bot import get_persian_main_menu, AdminBotService


async def test_system_hub_pause_toggle():
    repo = AsyncMock()
    repo.is_system_paused.return_value = False
    admin_bot = AdminBotService(repo=repo, ai_processor=None, queue=None, review_channel_id=-100)
    text, buttons = await admin_bot._render_system_hub()
    btn_texts = [getattr(b, 'text', '') for row in buttons for b in row]
    assert any("🛑 توقف" in t for t in btn_texts)

    repo.is_system_paused.return_value = True
    text, buttons = await admin_bot._render_system_hub()
    btn_texts = [getattr(b, 'text', '') for row in buttons for b in row]
    assert any("▶️ راه‌اندازی" in t for t in btn_texts)


async def test_llm_fallback_chain_success_on_fallback():
    # Setup 2 providers: Primary (fails) -> Fallback (succeeds)
    profile_1 = AIProviderProfile(
        id=1,
        name="Primary AI",
        provider_type="openai",
        model="gpt-4o",
        base_url="https://api.openai.com/v1",
        api_key="key1",
        is_active=True,
        fallback_provider_id=2
    )
    profile_2 = AIProviderProfile(
        id=2,
        name="Backup AI",
        provider_type="gemini",
        model="gemini-1.5-flash",
        base_url="",
        api_key="key2",
        is_active=False,
        fallback_provider_id=None
    )

    repo_mock = AsyncMock()
    repo_mock.get_active_provider_profile.return_value = profile_1
    repo_mock.get_provider_profiles.return_value = [profile_1, profile_2]
    repo_mock.record_ai_log = AsyncMock()

    fallback_alerts = []

    async def on_fallback(from_p, to_p, err, step):
        fallback_alerts.append((from_p.name, to_p.name, err, step))

    client = LLMClient(
        repo=repo_mock,
        on_fallback_alert=on_fallback,
    )
    client.max_retries_per_model = 0  # fail fast for test

    # Mock _call_openai to fail and _call_gemini to succeed
    with patch.object(client, "_call_openai", side_effect=RuntimeError("Primary Provider Timeout")):
        with patch.object(client, "_call_gemini", return_value={"decision": "accept", "rewritten_text": "Success from backup"}):
            res = await client.generate_json("Test prompt", system_prompt="Test sys")
            assert res["decision"] == "accept"
            assert res["rewritten_text"] == "Success from backup"
            assert len(fallback_alerts) == 1
            assert fallback_alerts[0][0] == "Primary AI"
            assert fallback_alerts[0][1] == "Backup AI"
            assert "Primary Provider Timeout" in fallback_alerts[0][2]
            assert fallback_alerts[0][3] == 1


async def test_llm_fallback_chain_all_fail_alert():
    profile_1 = AIProviderProfile(
        id=1,
        name="Primary AI",
        provider_type="openai",
        model="gpt-4o",
        is_active=True,
        fallback_provider_id=2
    )
    profile_2 = AIProviderProfile(
        id=2,
        name="Backup AI 1",
        provider_type="openai",
        model="gpt-4o-mini",
        is_active=False,
        fallback_provider_id=3
    )
    profile_3 = AIProviderProfile(
        id=3,
        name="Backup AI 2",
        provider_type="gemini",
        model="gemini-1.5-flash",
        is_active=False,
        fallback_provider_id=None
    )

    repo_mock = AsyncMock()
    repo_mock.get_active_provider_profile.return_value = profile_1
    repo_mock.get_provider_profiles.return_value = [profile_1, profile_2, profile_3]
    repo_mock.record_ai_log = AsyncMock()

    fallback_alerts = []
    chain_failure_alerts = []

    async def on_fallback(from_p, to_p, err, step):
        fallback_alerts.append((from_p.name, to_p.name, err, step))

    async def on_chain_failure(chain, err):
        chain_failure_alerts.append((len(chain), err))

    client = LLMClient(
        repo=repo_mock,
        on_fallback_alert=on_fallback,
        on_chain_failure_alert=on_chain_failure,
    )
    client.max_retries_per_model = 0

    with patch.object(client, "_call_openai", side_effect=RuntimeError("OpenAI Error")):
        with patch.object(client, "_call_gemini", side_effect=RuntimeError("Gemini Quota Exceeded")):
            try:
                await client.generate_json("Test prompt")
                assert False, "Should have raised exception"
            except Exception as e:
                assert "Gemini Quota Exceeded" in str(e) or "OpenAI Error" in str(e)

            # Check fallbacks: 1 -> 2, 2 -> 3
            assert len(fallback_alerts) == 2
            assert fallback_alerts[0][0] == "Primary AI"
            assert fallback_alerts[0][1] == "Backup AI 1"
            assert fallback_alerts[1][0] == "Backup AI 1"
            assert fallback_alerts[1][1] == "Backup AI 2"

            # Check chain failure alert triggered
            assert len(chain_failure_alerts) == 1
            assert chain_failure_alerts[0][0] == 3


async def main():
    await test_system_hub_pause_toggle()
    await test_llm_fallback_chain_success_on_fallback()
    await test_llm_fallback_chain_all_fail_alert()
    print("All system stop and multi-provider AI fallback chain tests passed successfully!")

if __name__ == "__main__":
    asyncio.run(main())