"""Next.js BFF routes for local JSON live under periscope/src."""

from __future__ import annotations

from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]
SRC = ROOT / "periscope" / "src" / "frontend" / "src"


def _text(rel: str) -> str:
    path = SRC / rel
    assert path.is_file(), rel
    return path.read_text(encoding="utf-8")


def test_bff_routes_are_src():
    for rel in (
        "lib/mock-data.ts",
        "app/(app)/api/_project-json.ts",
        "app/(app)/api/projects/route.ts",
        "app/(app)/api/report/[id]/route.ts",
        "app/(app)/api/graph/[id]/route.ts",
    ):
        head = _text(rel)[:400]
        assert "Native Periscope overlay" not in head


def test_projects_route_serves_mock_catalog():
    route = _text("app/(app)/api/projects/route.ts")
    assert "export async function GET" in route
    assert "PROJECTS" in route
    mock = _text("lib/mock-data.ts")
    assert "export const PROJECTS" in mock
    assert "simple_project" in mock
    assert "export function createPipelineSteps" in mock


def test_report_and_graph_read_sibling_json():
    report = _text("app/(app)/api/report/[id]/route.ts")
    graph = _text("app/(app)/api/graph/[id]/route.ts")
    helper = _text("app/(app)/api/_project-json.ts")
    assert "report.json" in report
    assert "Report not found" in report
    assert "design_graph.json" in graph
    assert "Graph not found" in graph
    assert "jsonFromProjectFile" in helper
    assert "params: Promise<{ id: string }>" in report
    assert "params: Promise<{ id: string }>" in graph


def test_proxy_stays_clerk_seam_in_dependency():
    src_proxy = ROOT / "periscope" / "src" / "frontend" / "src" / "proxy.ts"
    dep_proxy = ROOT / "periscope" / "dependency" / "frontend" / "src" / "proxy.ts"
    assert not src_proxy.exists()
    text = dep_proxy.read_text(encoding="utf-8")
    assert "Open-core seam" in text
    assert "export function proxy" in text