import datetime
import uuid
from datetime import timedelta

import pytest
from httpx import AsyncClient
from sqlalchemy.orm import Session

from app.core.config import settings
from app.main import app
from app.models import GlobalRole, OrgRole, Project, ServerStatus, Sms
from app.schemas.responses import EnumServerStatus

pytestmark = pytest.mark.asyncio


@pytest.fixture
def super_admin_headers(make_org_user) -> dict:
    """Fixture to get headers for a user with SUPER_ADMIN global role."""
    _, headers = make_org_user(role=OrgRole.ORG_ADMIN, global_role=GlobalRole.SUPER_ADMIN)
    return headers


@pytest.fixture
def standard_user_headers(make_org_user) -> dict:
    """Fixture to get headers for a standard user."""
    _, headers = make_org_user(role=OrgRole.ORG_ADMIN, global_role=GlobalRole.USER)
    return headers


@pytest.fixture
def sms_records(session: Session, default_project: Project) -> dict[str, Sms]:
    """Creates a matrix of SMS records to test various time and state conditions."""
    now = datetime.datetime.now()

    # Ready to send (within the default 10 min window)
    sms_to_send = Sms(
        project_id=default_project.id,
        content="to send",
        phone_number="0600000001",
        sending_time=now - timedelta(minutes=5),
    )

    # Too old (missed the default 10 min window)
    sms_too_old = Sms(
        project_id=default_project.id,
        content="too old",
        phone_number="0600000002",
        sending_time=now - timedelta(minutes=15),
    )

    # Scheduled for the future
    sms_future = Sms(
        project_id=default_project.id,
        content="future",
        phone_number="0600000003",
        sending_time=now + timedelta(minutes=10),
    )

    # 4. Already sent
    sms_sent = Sms(
        project_id=default_project.id,
        content="sent",
        phone_number="0600000004",
        sending_time=now - timedelta(minutes=5),
        send_time=now - timedelta(minutes=1),
    )

    session.add_all([sms_to_send, sms_too_old, sms_future, sms_sent])
    session.commit()
    session.refresh(sms_to_send)
    session.refresh(sms_too_old)
    session.refresh(sms_future)
    session.refresh(sms_sent)

    return {
        "to_send": sms_to_send,
        "too_old": sms_too_old,
        "future": sms_future,
        "sent": sms_sent,
    }


class TestSmsSenderSecurity:
    """Ensure all endpoints are strictly protected by require_super_admin"""

    @pytest.fixture(autouse=True)
    def setup_routes(self, sms_records):
        sms_id = sms_records["to_send"].id
        self.routes = [
            ("GET", "list_sms_to_send", {}, None),
            ("POST", "send_sms_now", {"sms_id": sms_id}, None),
            ("GET", "list_not_sent", {}, None),
            ("GET", "list_future_sms", {}, None),
            ("POST", "update_status", {}, None),
            ("GET", "get_status", {}, None),
        ]

    async def test_rejects_unauthenticated(self, client: AsyncClient):
        for method, endpoint, kwargs, payload in self.routes:
            url = app.url_path_for(endpoint, **kwargs)
            req = getattr(client, method.lower())
            response = await req(url, json=payload) if payload else await req(url)
            assert response.status_code == 401

    async def test_rejects_standard_user(self, client: AsyncClient, standard_user_headers):
        for method, endpoint, kwargs, payload in self.routes:
            url = app.url_path_for(endpoint, **kwargs)
            req = getattr(client, method.lower())
            response = (
                await req(url, json=payload, headers=standard_user_headers)
                if payload
                else await req(url, headers=standard_user_headers)
            )
            # require_super_admin usually throws 403
            assert response.status_code == 403


class TestListSmsToSend:
    async def test_default_delay_window(
        self, client: AsyncClient, super_admin_headers, sms_records
    ):
        """Should only return SMS scheduled in the past 10 minutes (default)."""
        response = await client.get(
            app.url_path_for("list_sms_to_send"), headers=super_admin_headers
        )
        assert response.status_code == 200
        data = response.json()

        assert len(data) == 1
        assert data[0]["id"] == str(sms_records["to_send"].id)

    async def test_custom_max_delay(self, client: AsyncClient, super_admin_headers, sms_records):
        """Increasing max_delay to 20 mins should include the 'too_old' SMS."""
        response = await client.get(
            f"{app.url_path_for('list_sms_to_send')}?max_delay=20", headers=super_admin_headers
        )
        assert response.status_code == 200
        data = response.json()

        assert len(data) == 2
        ids = [sms["id"] for sms in data]
        assert str(sms_records["to_send"].id) in ids
        assert str(sms_records["too_old"].id) in ids


class TestSendSmsNow:
    async def test_send_success_and_updates_status(
        self, client: AsyncClient, super_admin_headers, sms_records, session: Session
    ):
        sms_id = sms_records["to_send"].id

        # Ensure status is empty initially
        assert session.query(ServerStatus).first() is None

        response = await client.post(
            app.url_path_for("send_sms_now", sms_id=sms_id),
            headers=super_admin_headers,
        )

        assert response.status_code == 200
        assert response.json()["send_time"] is not None

        # Verify DB is updated
        session.refresh(sms_records["to_send"])
        assert sms_records["to_send"].send_time is not None

        # Verify ServerStatus was updated implicitly by the router
        status = session.query(ServerStatus).first()
        assert status is not None
        assert status.host == "127.0.0.1"  # HTTPX default test client host

    async def test_already_sent_returns_400(
        self, client: AsyncClient, super_admin_headers, sms_records
    ):
        response = await client.post(
            app.url_path_for("send_sms_now", sms_id=sms_records["sent"].id),
            headers=super_admin_headers,
        )
        assert response.status_code == 400
        assert response.json()["detail"] == "SMS has already been sent"

    async def test_not_found_returns_404(self, client: AsyncClient, super_admin_headers):
        response = await client.post(
            app.url_path_for("send_sms_now", sms_id=uuid.uuid4()),
            headers=super_admin_headers,
        )
        assert response.status_code == 404


class TestListNotSent:
    async def test_returns_all_unsent(self, client: AsyncClient, super_admin_headers, sms_records):
        response = await client.get(app.url_path_for("list_not_sent"), headers=super_admin_headers)
        assert response.status_code == 200
        data = response.json()

        # Should include to_send, too_old, and future (everything where send_time is None)
        assert len(data) == 3
        ids = [sms["id"] for sms in data]
        assert str(sms_records["sent"].id) not in ids


class TestListFutureSms:
    async def test_returns_only_future(self, client: AsyncClient, super_admin_headers, sms_records):
        response = await client.get(
            app.url_path_for("list_future_sms"), headers=super_admin_headers
        )
        assert response.status_code == 200
        data = response.json()

        # Should only include the future SMS
        assert len(data) == 1
        assert data[0]["id"] == str(sms_records["future"].id)


class TestServerStatus:
    async def test_post_status_creates_new(
        self, client: AsyncClient, super_admin_headers, session: Session
    ):
        response = await client.post(
            app.url_path_for("update_status"),
            headers={**super_admin_headers, "user-agent": "test-agent"},
        )
        assert response.status_code == 200

        status = session.query(ServerStatus).first()
        assert status.id == 1
        assert status.user_agent == "test-agent"

    async def test_get_status_invalid_if_empty(self, client: AsyncClient, super_admin_headers):
        """If the server has never pinged, it should return INVALID."""
        response = await client.get(app.url_path_for("get_status"), headers=super_admin_headers)
        assert response.status_code == 200
        assert response.json()["message"] == EnumServerStatus.INVALID.value

    async def test_get_status_active(
        self, client: AsyncClient, super_admin_headers, session: Session
    ):
        """Should be ACTIVE if pinged recently."""
        status = ServerStatus(
            id=1,
            user_agent="python",
            host="127.0.0.1",
            updated_at=datetime.datetime.now(datetime.UTC),
        )
        session.add(status)
        session.commit()

        response = await client.get(app.url_path_for("get_status"), headers=super_admin_headers)
        assert response.status_code == 200
        assert response.json()["message"] == EnumServerStatus.ACTIVE.value

    async def test_get_status_inactive(
        self, client: AsyncClient, super_admin_headers, session: Session
    ):
        """Should be INACTIVE if time since last ping exceeds settings threshold."""
        old_time = datetime.datetime.now(datetime.UTC) - timedelta(
            seconds=settings.INACTIVITY_SMS_SENDER_THRESHOLD_SECONDS + 10
        )
        status = ServerStatus(id=1, user_agent="python", host="127.0.0.1", updated_at=old_time)
        session.add(status)
        session.commit()

        response = await client.get(app.url_path_for("get_status"), headers=super_admin_headers)
        assert response.status_code == 200
        assert response.json()["message"] == EnumServerStatus.INACTIVE.value