"""The owner's credit console: top-ups, an organization's history and the balances page.

What these tests defend:

* a credit from the platform owner moves the wallet, writes one history row, one audit row
  that names the reason, and one live ``billing.wallet`` event with the new balance
* the history and the balances page show the credit under the right organization
* only the platform owner reaches the three endpoints: an organization owner and a plain user
  get 403 and change nothing, an anonymous caller gets 401
* an unknown organization is a 404, and a zero or negative amount or a blank reason is refused
  with a Persian message
"""

from __future__ import annotations

import pytest_asyncio
from httpx import AsyncClient
from sqlalchemy import select

from app.application.ports.realtime import RealtimeEvent, get_publisher, set_publisher
from app.domain.audit.models import AuditAction
from app.domain.base import new_id
from app.infrastructure.db.models import AuditEventRow, UserRow
from tests.conftest import auth_header

CREDITS = "/api/admin/credits"
ORGS = "/api/admin/orgs"
OWNER_EMAIL = "platform-owner@example.com"
REASON = "شارژ اولیهٔ سازمان"


class _Recorder:
    """Stands in for the realtime bus and keeps every event it is given."""

    def __init__(self) -> None:
        self.events: list[RealtimeEvent] = []

    async def publish(self, event: RealtimeEvent) -> None:
        self.events.append(event)


@pytest_asyncio.fixture
async def recorder():
    """Install a recording publisher for one test and put the previous one back."""
    previous = get_publisher()
    bus = _Recorder()
    set_publisher(bus)
    try:
        yield bus
    finally:
        set_publisher(previous)


def _payload(name: str, slug: str) -> dict:
    return {
        "org_name": name,
        "slug": slug,
        "app_name": f"app-{slug}",
        "app_type": "web_app",
        "language": "node",
        "framework": "next",
        "git_source": "platform",
    }


async def _create_org(client: AsyncClient, token: str, name: str, slug: str) -> str:
    """An organization the manager created through the wizard, as a customer would."""
    response = await client.post(
        "/api/setup/complete", json=_payload(name, slug), headers=auth_header(token)
    )
    assert response.status_code == 201, response.text
    return response.json()["organization"]["id"]


async def test_the_owner_credit_moves_the_wallet_and_is_audited_and_pushed(
    client, manager_token, platform_owner_token, seeded, session_factory, recorder
):
    org_id = await _create_org(client, manager_token, "سازمان الف", "credit-alpha")
    owner = auth_header(platform_owner_token)

    credited = await client.post(
        f"{ORGS}/{org_id}/credit", json={"amount": 25.0, "reason": REASON}, headers=owner
    )
    assert credited.status_code == 200, credited.text
    body = credited.json()
    assert body["kind"] == "owner_credit"
    assert body["amount"] == 25.0
    assert body["balance_after"] == 25.0
    assert body["reason"] == REASON
    # The response carries only the history fields: no model, provider or secret.
    assert set(body) == {"id", "kind", "amount", "balance_after", "reason", "created_at"}

    balances = await client.get(CREDITS, headers=owner)
    assert balances.status_code == 200, balances.text
    row = next(b for b in balances.json() if b["organization_id"] == org_id)
    assert row["balance"] == 25.0
    assert row["currency"] == "USD"
    assert row["paused_tasks"] == 0
    assert row["last_credit_at"] is not None

    history = await client.get(f"{ORGS}/{org_id}/credit-history", headers=owner)
    assert history.status_code == 200, history.text
    assert [h["reason"] for h in history.json()] == [REASON]

    async with session_factory() as session:
        owner_id = (
            await session.execute(select(UserRow.id).where(UserRow.email == OWNER_EMAIL))
        ).scalar_one()
        audits = (
            await session.execute(
                select(AuditEventRow).where(
                    AuditEventRow.action == AuditAction.BILLING_CREDIT,
                    AuditEventRow.organization_id == org_id,
                )
            )
        ).scalars().all()
    assert len(audits) == 1
    assert audits[0].actor_user_id == owner_id
    assert audits[0].metadata_json["reason"] == REASON
    assert audits[0].metadata_json["balance"] == 25.0

    pushed = [e for e in recorder.events if e.type == "billing.wallet"]
    assert pushed, "the owner's credit must push the new balance to the organization"
    assert pushed[-1].data == {"organization_id": org_id, "balance": 25.0}


async def test_only_the_platform_owner_reaches_the_credit_console(
    client, manager_token, plain_user_token, platform_owner_token, seeded
):
    org_id = await _create_org(client, manager_token, "سازمان ب", "credit-beta")
    calls = [
        ("get", CREDITS, None),
        ("post", f"{ORGS}/{org_id}/credit", {"amount": 5.0, "reason": REASON}),
        ("get", f"{ORGS}/{org_id}/credit-history", None),
    ]

    # The manager is the organization's owner; the plain user is a customer with no seat.
    for token in (manager_token, plain_user_token):
        for method, path, body in calls:
            kwargs: dict = {"headers": auth_header(token)}
            if body is not None:
                kwargs["json"] = body
            response = await getattr(client, method)(path, **kwargs)
            assert response.status_code == 403, response.text

    anonymous = await client.get(CREDITS)
    assert anonymous.status_code == 401

    # The refused credits changed nothing.
    balances = await client.get(CREDITS, headers=auth_header(platform_owner_token))
    row = next(b for b in balances.json() if b["organization_id"] == org_id)
    assert row["balance"] == 0.0
    assert row["last_credit_at"] is None


async def test_an_unknown_organization_is_not_found(client, platform_owner_token, seeded):
    owner = auth_header(platform_owner_token)
    missing = new_id()

    credited = await client.post(
        f"{ORGS}/{missing}/credit", json={"amount": 5.0, "reason": REASON}, headers=owner
    )
    assert credited.status_code == 404, credited.text

    history = await client.get(f"{ORGS}/{missing}/credit-history", headers=owner)
    assert history.status_code == 404, history.text


async def test_the_history_limit_is_checked_and_the_list_is_scoped(
    client, manager_token, platform_owner_token, seeded
):
    org_a = await _create_org(client, manager_token, "سازمان الف", "credit-hist-a")
    owner = auth_header(platform_owner_token)
    for reason in ("شارژ نخست", "شارژ دوم"):
        response = await client.post(
            f"{ORGS}/{org_a}/credit", json={"amount": 10.0, "reason": reason}, headers=owner
        )
        assert response.status_code == 200, response.text

    capped = await client.get(
        f"{ORGS}/{org_a}/credit-history?limit=1", headers=owner
    )
    assert capped.status_code == 200, capped.text
    assert [h["reason"] for h in capped.json()] == ["شارژ دوم"]

    too_many = await client.get(f"{ORGS}/{org_a}/credit-history?limit=500", headers=owner)
    assert too_many.status_code == 422, too_many.text


async def test_a_refused_credit_is_a_4xx_with_a_persian_message(
    client, manager_token, platform_owner_token, seeded
):
    org_id = await _create_org(client, manager_token, "سازمان پ", "credit-gamma")
    owner = auth_header(platform_owner_token)

    for amount, reason, message in (
        (0.0, REASON, "مقدار اعتبار باید بیشتر از صفر"),
        (-3.0, REASON, "مقدار اعتبار باید بیشتر از صفر"),
        (10.0, "", "دلیل افزودن اعتبار لازم است."),
    ):
        response = await client.post(
            f"{ORGS}/{org_id}/credit", json={"amount": amount, "reason": reason}, headers=owner
        )
        assert response.status_code == 422, response.text
        assert message in response.json()["error"]["message"]