"""Browser PAT lifecycle and authentication boundaries, with no upstream calls."""

from datetime import timedelta

import httpx
import pytest
from fastapi import HTTPException
from sqlalchemy import select

from app.mcp_api.auth import authenticate
from app.models import Account, MCPToken, now


async def test_token_browser_lifecycle(app, logged_in):
    client = logged_in
    # Administration remains available when the MCP transport is disabled.
    initial = (await client.get("/api/v1/mcp-tokens")).json()
    assert initial["enabled"] is False and initial["can_create"] is False
    assert (await client.post("/api/v1/mcp-tokens", json={"name": "reader"})).status_code == 422
    async with app.state.sessions.begin() as db:
        account = await db.get(Account, 1)
        account.wq_user_id = "synthetic-user"
    issued = await client.post("/api/v1/mcp-tokens", json={"name": " reader "})
    assert issued.status_code == 201
    assert issued.headers["cache-control"] == "no-store"
    token = issued.json()
    assert token["name"] == "reader" and token["scopes"] == ["research:read"]
    assert token["status"] == "active" and token["token"].startswith("wqmcp_")
    async with app.state.sessions() as db:
        principal = await authenticate(db, token["token"])
        row = await db.get(MCPToken, principal.token_id)
        assert row.token_hash != token["token"]
        assert 89 < (row.expires_at.replace(tzinfo=now().tzinfo) - now()).total_seconds() / 86400 <= 90
    page = await client.get("/api/v1/mcp-tokens?limit=1")
    assert token["token"] not in page.text and "token_hash" not in page.text
    assert page.json()["items"][0]["id"] == token["id"]
    second = await client.post("/api/v1/mcp-tokens", json={"name": "executor", "days": 1, "scopes": ["research:read", "backtests:execute"]})
    assert second.status_code == 201
    page = (await client.get("/api/v1/mcp-tokens?limit=1")).json()
    assert page["total"] == 2 and page["has_more"]
    assert (await client.get("/api/v1/mcp-tokens?limit=1&offset=1")).json()["items"][0]["id"] == token["id"]
    revoked = await client.post(f'/api/v1/mcp-tokens/{token["id"]}/revoke')
    again = await client.post(f'/api/v1/mcp-tokens/{token["id"]}/revoke')
    assert revoked.json() == again.json() and revoked.json()["status"] == "revoked"
    assert "token" not in revoked.json()
    async with app.state.sessions() as db:
        with pytest.raises(HTTPException) as exc:
            await authenticate(db, token["token"])
        assert exc.value.status_code == 401
    assert (await client.post("/api/v1/mcp-tokens/missing/revoke")).status_code == 404


async def test_token_browser_security_and_validation(app, logged_in):
    client = logged_in
    async with app.state.sessions.begin() as db:
        (await db.get(Account, 1)).wq_user_id = "synthetic-user"
    for body in [
        {"name": " "}, {"name": "x", "days": 0}, {"name": "x", "days": 366},
        {"name": "x", "days": 1.5}, {"name": "x", "scopes": ["backtests:execute"]},
        {"name": "x", "scopes": ["research:read", "admin"]}, {"name": "x", "account_id": 2},
    ]:
        assert (await client.post("/api/v1/mcp-tokens", json=body)).status_code == 422
    assert (await client.post("/api/v1/mcp-tokens", json={"name": "x"}, headers={"X-WQ-Request": ""})).status_code == 403
    assert (await client.post("/api/v1/mcp-tokens", json={"name": "x"}, headers={"Origin": "https://evil.test"})).status_code == 403
    token = (await client.post("/api/v1/mcp-tokens", json={"name": "x"})).json()
    async with httpx.AsyncClient(transport=httpx.ASGITransport(app=app), base_url="http://testserver") as outsider:
        headers = {"Authorization": f'Bearer {token["token"]}', "X-WQ-Request": "1"}
        assert (await outsider.get("/api/v1/mcp-tokens")).status_code == 401
        assert (await outsider.get("/api/v1/mcp-tokens", headers=headers)).status_code == 401
        assert (await outsider.post("/api/v1/mcp-tokens", json={"name": "escalation"}, headers=headers)).status_code == 401
        assert (await outsider.post(f'/api/v1/mcp-tokens/{token["id"]}/revoke', headers=headers)).status_code == 401
    async with app.state.sessions.begin() as db:
        (await db.get(Account, 1)).wq_user_id = "different-user"
    assert (await client.get("/api/v1/mcp-tokens")).json()["items"][0]["status"] == "invalid_binding"
    async with app.state.sessions.begin() as db:
        row = await db.scalar(select(MCPToken))
        row.expires_at = now() - timedelta(days=1)
    assert (await client.get("/api/v1/mcp-tokens")).json()["items"][0]["status"] == "expired"


async def test_edit_token_permissions(app, logged_in):
    async with app.state.sessions.begin() as db:
        (await db.get(Account, 1)).wq_user_id = "synthetic-user"
    token = (await logged_in.post("/api/v1/mcp-tokens", json={"name": "editable"})).json()
    path = f'/api/v1/mcp-tokens/{token["id"]}'
    for scopes in [["research:read", "research:write", "backtests:execute"], ["research:read"]]:
        response = await logged_in.patch(path, json={"scopes": scopes})
        assert response.status_code == 200
        result = response.json()
        assert result["scopes"] == sorted(scopes)
        assert result["expires_at"] == token["expires_at"]
        assert result["name"] == token["name"]
        assert "token" not in result and "token_hash" not in result
        async with app.state.sessions() as db:
            assert (await authenticate(db, token["token"])).scopes == frozenset(scopes)
    for body in [{"scopes": []}, {"scopes": ["admin", "research:read"]}, {"scopes": ["research:write"]}, {"scopes": ["research:read"], "admin_id": 2}, {}]:
        assert (await logged_in.patch(path, json=body)).status_code == 422
    body = {"scopes": ["research:read", "research:write"]}
    assert (await logged_in.patch(path, json=body, headers={"X-WQ-Request": ""})).status_code == 403
    assert (await logged_in.patch(path, json=body, headers={"Origin": "https://evil.test"})).status_code == 403
    async with httpx.AsyncClient(transport=httpx.ASGITransport(app=app), base_url="http://testserver") as outsider:
        assert (await outsider.patch(path, json=body, headers={"Authorization": f'Bearer {token["token"]}', "X-WQ-Request": "1"})).status_code == 401
    assert (await logged_in.patch("/api/v1/mcp-tokens/missing", json=body)).status_code == 404
    async with app.state.sessions.begin() as db:
        (await db.get(Account, 1)).wq_user_id = "changed-user"
    assert (await logged_in.patch(path, json=body)).status_code == 409
    async with app.state.sessions.begin() as db:
        (await db.get(Account, 1)).wq_user_id = "synthetic-user"
        (await db.get(MCPToken, token["id"])).expires_at = now() - timedelta(days=1)
    assert (await logged_in.patch(path, json=body)).status_code == 409
    await logged_in.post(path + "/revoke")
    assert (await logged_in.patch(path, json=body)).status_code == 409