"""Le backend doit accepter la mise en page v2 sans relacher sa validation."""

from __future__ import annotations

import os

from fastapi.testclient import TestClient

from app.config import get_settings
from tests.conftest import build_map

RICH_NODE = {
    "id": "styled",
    "type": "standard",
    "text": "Firewall",
    "position": {"x": 120, "y": 40},
    "parentId": "root",
    "icon": "server",
    "iconStyle": {"kind": "builtin", "position": "top", "size": 24, "gap": 12},
    "style": {
        "backgroundColor": "#112233",
        "textAlign": "center",
        "verticalAlign": "middle",
        "lineHeight": 1.6,
        "fontFamily": "mono",
        "shadow": "strong",
    },
    "layout": {
        "widthMode": "fixed",
        "width": 320,
        "heightMode": "fixed",
        "height": 140,
        "paddingX": 28,
        "paddingY": 18,
        "wrap": False,
        "maxTextWidth": 400,
    },
    "branch": {"style": "straight", "width": 4, "color": "#ff8800"},
}


def build_v2_map() -> dict:
    payload = build_map(node_count=2, name="Infrastructure")
    payload["version"] = 2
    payload["nodes"].append(RICH_NODE)
    payload["edges"].append({"id": "e-root-styled", "source": "root", "target": "styled"})
    payload["settings"]["layoutSpacing"] = {"parentGap": 140, "siblingGap": 80}
    payload["settings"]["snapToGrid"] = True
    payload["settings"]["snapGrid"] = 10
    payload["settings"]["alignmentGuides"] = False
    return payload


def test_share_accepts_layout_properties(client: TestClient) -> None:
    response = client.post("/api/shares", json={"title": "v2", "map": build_v2_map()})
    assert response.status_code == 201, response.text


def test_shared_map_is_returned_unchanged(client: TestClient) -> None:
    created = client.post("/api/shares", json={"title": "v2", "map": build_v2_map()})
    token = created.json()["share_token"]

    public = client.get("/api/shares/" + token).json()
    assert public["map_version"] == 2

    node = next(item for item in public["map"]["nodes"] if item["id"] == "styled")
    assert node["layout"] == RICH_NODE["layout"]
    assert node["style"] == RICH_NODE["style"]
    assert node["iconStyle"] == RICH_NODE["iconStyle"]
    assert node["branch"] == RICH_NODE["branch"]
    assert node["icon"] == "server"
    assert node["position"] == {"x": 120, "y": 40}

    settings = public["map"]["settings"]
    assert settings["layoutSpacing"] == {"parentGap": 140, "siblingGap": 80}
    assert settings["snapToGrid"] is True
    assert settings["alignmentGuides"] is False


def test_version_1_maps_are_still_accepted(client: TestClient) -> None:
    response = client.post("/api/shares", json={"title": "v1", "map": build_map()})
    assert response.status_code == 201
    assert response.json()["share_token"]


def test_node_limit_still_applies_to_v2_maps(client: TestClient) -> None:
    os.environ["MAX_NODES"] = "5"
    get_settings.cache_clear()
    try:
        payload = build_v2_map()
        for index in range(20):
            payload["nodes"].append(
                {
                    "id": f"extra{index}",
                    "type": "standard",
                    "text": "x",
                    "position": {"x": 0, "y": 0},
                    "parentId": "root",
                    "layout": {"paddingX": 10},
                }
            )
        response = client.post("/api/shares", json={"title": "x", "map": payload})
        assert response.status_code == 422
    finally:
        os.environ["MAX_NODES"] = "5000"
        get_settings.cache_clear()


def test_unknown_top_level_field_is_still_rejected(client: TestClient) -> None:
    response = client.post(
        "/api/shares", json={"title": "x", "map": build_v2_map(), "premium": True}
    )
    assert response.status_code == 422


def test_node_without_id_is_still_rejected(client: TestClient) -> None:
    payload = build_v2_map()
    payload["nodes"].append({"text": "sans id", "layout": {"paddingX": 4}})
    response = client.post("/api/shares", json={"title": "x", "map": payload})
    assert response.status_code == 422