import assert from "node:assert/strict";
import { readFileSync } from "node:fs";
import test from "node:test";
import { buildUniverseMap } from "./build-universe-map.mjs";

const html = readFileSync(new URL("./star-map.html", import.meta.url), "utf8");
const startScript = readFileSync(new URL("./start-webserver.cmd", import.meta.url), "utf8");

function extractJsonScript(id) {
  const pattern = new RegExp(`<script type="application/json" id="${id}">([\\s\\S]*?)</script>`);
  const match = html.match(pattern);
  assert.ok(match, `missing JSON script #${id}`);
  return JSON.parse(match[1]);
}

test("universe import builds a grid map from universe.ini", async () => {
  const data = await buildUniverseMap({
    universeDir: "C:/PROJECTS/REM/REM-Mod/DATA/UNIVERSE"
  });

  assert.equal(data.source, "universe.ini");
  assert.equal(data.systems.length, 58);
  assert.ok(data.connections.length >= 80, "expected direct jump connections from system INIs");
  assert.deepEqual(data.grid, {
    minCol: 0,
    minRow: 0,
    maxCol: 16,
    maxRow: 16,
    cellSize: 72,
    margin: 72
  });

  const newYork = data.systems.find((system) => system.id === "li01");
  assert.ok(newYork, "missing Li01");
  assert.equal(newYork.name, "New York");
  assert.equal(newYork.gridX, 7);
  assert.equal(newYork.gridY, 8);
  assert.equal(newYork.x, 576);
  assert.equal(newYork.y, 648);

  assert.ok(data.connections.some((connection) => connection.from === "li01" && connection.to === "li02"));
});

test("template contains the systems and connections from universe.ini", () => {
  const data = extractJsonScript("initial-map-data");

  assert.equal(data.source, "universe.ini");
  assert.equal(data.systems.length, 58, "expected active systems from universe.ini");
  assert.ok(data.connections.length >= 80, "expected direct route set from system INIs");
  assert.ok(data.grid, "expected grid metadata");

  for (const name of ["Tau-37", "Leeds", "New Tokyo", "Sigma-19", "New Berlin", "Omicron Prime"]) {
    assert.ok(data.systems.some((system) => system.name === name), `missing ${name}`);
  }

  for (const connection of data.connections) {
    assert.ok(data.systems.some((system) => system.id === connection.from), `missing source ${connection.from}`);
    assert.ok(data.systems.some((system) => system.id === connection.to), `missing target ${connection.to}`);
  }
});

test("editor UI exposes creation, deletion, linking, notes, and background controls", () => {
  assert.match(html, /data-mode="add"/, "missing add-system mode");
  assert.match(html, /data-mode="connect"/, "missing connection mode");
  assert.match(html, /id="deleteSelected"/, "missing delete action");
  assert.match(html, /id="systemNote"/, "missing per-system note field");
  assert.match(html, /id="backgroundColor"/, "missing configurable background");
  assert.match(html, /id="systemColor"/, "missing per-system color control");
  assert.match(html, /id="saveRemote"/, "missing persistent save action");
  assert.match(html, /id="loadRemote"/, "missing persistent load action");
  assert.doesNotMatch(html, /id="snapToGrid"/, "grid snapping must not be optional");
  assert.match(html, /function snapPointToGrid/, "missing grid snapping behavior");
  assert.doesNotMatch(html, /snapToGrid\.checked/, "grid snapping must always be active");
  assert.match(html, /function createSystem/, "missing system creation behavior");
  assert.match(html, /function createConnection/, "missing connection creation behavior");
  assert.match(html, /async function saveRemoteMap/, "missing server save behavior");
  assert.match(html, /async function loadRemoteMap/, "missing server load behavior");
});

test("system dragging has a forgiving hit target and stable pointer handlers", () => {
  assert.match(html, /createElementNS\("http:\/\/www\.w3\.org\/2000\/svg", "circle"\)[\s\S]*?class", "system-hit"/, "missing circular system drag hit target");
  assert.doesNotMatch(html, /createElementNS\("http:\/\/www\.w3\.org\/2000\/svg", "rect"\)[\s\S]*?class", "system-hit"/, "system labels must not be covered by click hit rects");
  assert.match(html, /function stopLabelEvent/, "missing label event blocker");
  assert.match(html, /label\.addEventListener\("click", stopLabelEvent\)/, "labels should swallow clicks without selecting objects");
  assert.match(html, /function handleDragMove/, "missing shared drag move handler");
  assert.match(html, /window\.addEventListener\("pointermove", handleDragMove\)/, "missing window pointermove handler");
  assert.match(html, /window\.addEventListener\("pointerup", handleDragEnd\)/, "missing window pointerup handler");
});

test("map supports zoom and easier connection selection", () => {
  assert.match(html, /id="zoomIn"/, "missing zoom-in action");
  assert.match(html, /id="zoomOut"/, "missing zoom-out action");
  assert.match(html, /id="resetZoom"/, "missing reset zoom action");
  assert.match(html, /function zoomMap/, "missing zoom behavior");
  assert.match(html, /svg\.addEventListener\("wheel"/, "missing wheel zoom");
  assert.match(html, /<g id="connections"><\/g>\s*<g id="connectionHits"><\/g>/, "connection hit layer should sit above visible lines");
  assert.match(html, /\.connection\s*\{[\s\S]*?pointer-events:\s*none;/, "visible connections should not block hit lines");
  assert.match(html, /\.connection-hit\s*\{[\s\S]*?stroke-width:\s*28;/, "connection hit target should be wide");
});

test("start script launches the local server and opens the browser", () => {
  assert.match(startScript, /node.*server\.mjs/i, "start script must launch server.mjs with node");
  assert.match(startScript, /127\.0\.0\.1:3000/i, "start script must open the local app URL");
  assert.match(startScript, /Start-Process/i, "start script must open the browser");
});