"""Shared test fixtures.

Tests run against an in-memory SQLite database with the real agy-shaped adapter
wiring and a fake model provider, so the suite needs no Postgres, no Redis, no
Google and no accounts. agy is the only model provider the platform talks to
(see ``app/infrastructure/adapters/registry.py``); the fake keeps completions
deterministic and offline.
"""

from __future__ import annotations

import pytest
import pytest_asyncio
from httpx import ASGITransport, AsyncClient
from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
from sqlalchemy.pool import StaticPool

# Importing the ORM package registers every table on ``Base.metadata``. Bound to
# a private name on purpose: ``app`` is also the FastAPI instance imported below,
# and binding the package to the same name would shadow it.
import app.infrastructure.db.models as _orm_models  # noqa: F401
from app.core.config import settings
from app.core.database import Base, get_session
from app.domain.base import new_id
from app.infrastructure.db.models import UserRow
from app.main import app


@pytest.fixture(scope="session", autouse=True)
def _production_shaped_jwt_secret():
    """Sign test tokens with a 32+ byte key.

    The development default is ``change-me`` (9 bytes), so PyJWT emits an
    ``InsecureKeyLengthWarning`` for every token signed or verified — hundreds of
    lines per run, which buries genuine warnings. Production refuses a short
    secret outright; that guard is covered by ``tests/test_config_guard.py``.
    """
    settings.jwt_secret = "test-only-jwt-secret-with-more-than-32-bytes"


@pytest_asyncio.fixture
async def engine():
    # StaticPool keeps one connection alive so the in-memory schema survives
    # across the sessions a single request opens.
    test_engine = create_async_engine(
        "sqlite+aiosqlite:///:memory:",
        connect_args={"check_same_thread": False},
        poolclass=StaticPool,
    )
    async with test_engine.begin() as conn:
        await conn.run_sync(Base.metadata.create_all)
    yield test_engine
    await test_engine.dispose()


@pytest_asyncio.fixture
async def session_factory(engine):
    return async_sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)


@pytest_asyncio.fixture
async def redirect_error_log(engine, monkeypatch):
    """Point the error recorder and the workers at the in-memory database.

    Neither goes through the ``get_session`` dependency override that ``client``
    installs — the recorder deliberately opens its own session, and the workers
    are not HTTP requests at all. Without this redirect, any test that triggers a
    failure path would write into the developer's real ``agy_web.db``.

    Not autouse: only the modules that exercise failure paths need it, and the
    ``engine`` it depends on builds the whole schema.
    """
    from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker

    import app.infrastructure.error_log as error_log
    from app.workers import base as worker_base

    factory = async_sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)
    monkeypatch.setattr(error_log, "SessionFactory", factory)
    monkeypatch.setattr(worker_base, "SessionFactory", factory)
    return factory


@pytest_asyncio.fixture
async def client(engine, session_factory):
    async def _override_session():
        async with session_factory() as session:
            try:
                yield session
                await session.commit()
            except Exception:
                await session.rollback()
                raise

    app.dependency_overrides[get_session] = _override_session
    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as test_client:
        yield test_client
    app.dependency_overrides.clear()


# ---------------------------------------------------------------------------
# Fake model provider — the only sanctioned stand-in for agy in tests
# ---------------------------------------------------------------------------


class _FakeModelProvider:
    """Offline stand-in for the agy adapter.

    The canned text must read like model output, not like a debug tag: the
    provider/model identity is platform-internal and must never surface in
    anything a customer can read (see the e2e smoke test).
    """

    async def complete(
        self,
        *,
        model,
        messages,
        system="",
        temperature=0.2,
        max_tokens=2048,
        credential=None,
        credentials=None,
    ):
        import asyncio
        import time

        from app.application.ports import ModelResponse

        started = time.perf_counter()
        last_user = next((m.content for m in reversed(messages) if m.role == "user"), "")
        prompt_tokens = sum(len(m.content.split()) for m in messages)
        # A tiny sleep so latency bookkeeping runs a real code path.
        await asyncio.sleep(0)
        content = (
            "این پاسخ آزمایشی است. "
            f"درخواست دریافتی: {last_user[:280] or '—'}"
        )
        return ModelResponse(
            content=content,
            model_internal_name=model.internal_name,
            input_tokens=prompt_tokens + len(system.split()),
            output_tokens=len(content.split()),
            latency_ms=int((time.perf_counter() - started) * 1000),
            raw={},
        )

    async def health(self):
        from app.application.ports import ModelHealth

        return ModelHealth(ok=True, detail="fake agy pool")


@pytest.fixture(autouse=True)
def _fake_model_provider(monkeypatch):
    """Swap the real model adapter out of every request path.

    ``container`` and the health router bind ``get_model_provider`` at import
    time, so both import sites are patched; without this a completion test
    would open the developer's real database and reach the real Google API.
    """
    from app.application import container as di_container
    from app.interfaces.http.routers import health as health_router

    provider = _FakeModelProvider()
    monkeypatch.setattr(di_container, "get_model_provider", lambda: provider)
    monkeypatch.setattr(health_router, "get_model_provider", lambda: provider)
    return provider


async def signup(
    client: AsyncClient, email: str, password: str = "password123", name: str = ""
) -> dict:
    response = await client.post(
        "/api/auth/signup", json={"email": email, "password": password, "name": name}
    )
    assert response.status_code == 201, response.text
    return response.json()


def auth_header(token: str) -> dict[str, str]:
    return {"Authorization": f"Bearer {token}"}


@pytest_asyncio.fixture
async def platform_owner_token(client: AsyncClient, session_factory) -> str:
    """A signed-up user promoted to platform owner.

    The promotion is done directly in the database because there is deliberately
    no API that can grant platform-owner status.
    """
    # ``example.com`` is a documentation domain and passes email validation.
    # Do NOT use ``.local``/``.test``: those are special-use TLDs and newer
    # ``email-validator`` releases reject them, which fails the fixture.
    email = "platform-owner@example.com"
    body = await signup(client, email, name="مالک سامانه")
    async with session_factory() as session:
        row = (
            await session.execute(select(UserRow).where(UserRow.email == email))
        ).scalar_one()
        row.is_platform_owner = True
        await session.commit()
    return body["access_token"]


#: The system agent templates ``app/seed.py`` installs. Mirrored here so the test
#: suite exercises the same employee-creation path a seeded install uses.
SYSTEM_TEMPLATES: list[tuple[str, str, str, list[str]]] = [
    ("مدیر سازمان", "manager", "کارها را تقسیم می‌کند.", ["knowledge.search"]),
    (
        "برنامه‌نویس",
        "developer",
        "کد می‌نویسد و تست می‌کند.",
        ["sandbox.run_command", "sandbox.write_file"],
    ),
]

#: The routing policies ``app/seed.py`` installs.
SYSTEM_ROUTING_POLICIES: list[tuple[str, str, bool, str]] = [
    ("سریع و ارزان", "cheap", True, "برای کارهای روزمره."),
    ("استدلال عمیق", "reasoning", False, "برای تحلیل پیچیده."),
]

#: The agy models ``app/seed.py`` installs: (internal_name, display,
#: capabilities, reasoning_effort). agy is the only provider, so this is the
#: whole catalogue.
SYSTEM_MODELS: list[tuple[str, str, list[str], str]] = [
    ("gemini-3-flash", "Gemini 3 Flash", ["text", "code", "long_context"], ""),
    (
        "gemini-3-pro-high",
        "Gemini 3 Pro",
        ["text", "reasoning", "code", "vision", "long_context"],
        "high",
    ),
    ("claude-sonnet-4-5", "Claude Sonnet 4.5", ["text", "code", "tools"], ""),
    (
        "claude-sonnet-4-5-thinking",
        "Claude Sonnet 4.5 (Thinking)",
        ["text", "code", "reasoning"],
        "high",
    ),
    (
        "claude-opus-4-5-thinking",
        "Claude Opus 4.5 (Thinking)",
        ["text", "reasoning", "code", "long_context"],
        "high",
    ),
    ("gpt-oss-120b-medium", "GPT-OSS 120B Medium", ["text", "code"], ""),
]

#: The rate cards ``app/seed.py`` installs: (unit, customer_price, internal_cost).
SYSTEM_RATE_CARDS: list[tuple[str, float, float]] = [
    ("model_input_tokens", 0.0000004, 0.0000002),
    ("model_output_tokens", 0.0000016, 0.0000008),
    ("tool_call", 0.0005, 0.0001),
    ("premium_employee_run", 0.02, 0.008),
]

#: The sandbox templates ``app/seed.py`` installs: (name, image, description).
SYSTEM_SANDBOX_TEMPLATES: list[tuple[str, str, str]] = [
    ("python-3.13", "python:3.13-slim", "محیط پایتون برای اجرای تست و اسکریپت."),
    ("node-22", "node:22-slim", "محیط Node برای build و اجرای پروژه‌های فرانت‌اند."),
]


@pytest_asyncio.fixture
async def seeded(session_factory):
    """Install the platform-level seed rows a fresh install would have.

    Agent templates, routing policies, the agy provider with its model catalog,
    the rate cards and the sandbox templates are all *platform* data (no
    organization owns them), so without this an employee cannot be created, a
    run cannot resolve a model to route to, usage cannot be priced and no
    sandbox can be started — none of which the real seeded install lacks.
    """
    from app.infrastructure.db.models import (
        AgentTemplateRow,
        AiModelRow,
        AiProviderRow,
        RateCardRow,
        RoutingPolicyRow,
        SandboxTemplateRow,
    )

    async with session_factory() as session:
        for name, role_key, description, tools in SYSTEM_TEMPLATES:
            session.add(
                AgentTemplateRow(
                    name=name,
                    role_key=role_key,
                    description=description,
                    default_prompt=f"تو {name} هستی. وظیفه‌ات: {description}",
                    default_tools_json=tools,
                    is_system=True,
                )
            )
        for name, mode, is_default, description in SYSTEM_ROUTING_POLICIES:
            session.add(
                RoutingPolicyRow(
                    name=name, description=description, mode=mode,
                    is_default=is_default, is_active=True,
                )
            )

        # A run cannot reach a model without an active provider + model, and
        # ``pick_for_mode`` returns ``None`` when the catalogue is empty — which
        # surfaces as a ``ProviderUnavailableError`` and a *failed* run.
        provider_id = new_id()
        session.add(
            AiProviderRow(
                id=provider_id, name="agy", type="agy", base_url="", is_active=True
            )
        )
        for internal, display, capabilities, effort in SYSTEM_MODELS:
            session.add(
                AiModelRow(
                    provider_id=provider_id,
                    internal_name=internal,
                    display_name_for_admin=display,
                    capabilities=capabilities,
                    input_price_per_1m=0.3,
                    output_price_per_1m=1.2,
                    reasoning_effort=effort,
                    is_active=True,
                )
            )
        for unit, customer_price, internal_cost in SYSTEM_RATE_CARDS:
            session.add(
                RateCardRow(
                    name=unit.replace("_", " "), unit=unit,
                    customer_price=customer_price,
                    internal_cost_estimate=internal_cost, is_active=True,
                )
            )
        for name, image, description in SYSTEM_SANDBOX_TEMPLATES:
            session.add(
                SandboxTemplateRow(
                    name=name, provider="mock", image=image, description=description,
                    default_cpu=1.0, default_memory_mb=1024, default_disk_mb=2048,
                    is_system=True,
                )
            )
        await session.commit()
    return True