import { createHash } from "node:crypto";
import { readFileSync } from "node:fs";
import { describe, expect, it } from "vitest";
import { DUNGEON_DEFINITIONS, requireDungeonDefinition } from "./dungeonRegistry";
import { dungeonArtworkContains, dungeonArtworkFloorFor, dungeonArtworkHeading, dungeonArtworkMapFor, dungeonArtworkPoint } from "./dungeonArtworkMap";

describe("RuneWaker dungeon maps", () => {
  it("packages a checksummed, position-aware map with every RuneWaker dungeon", () => {
    const dungeons = DUNGEON_DEFINITIONS.filter((dungeon) => dungeon.expansion === "runewaker");
    expect(dungeons).toHaveLength(33);
    for (const dungeon of dungeons) {
      const map = dungeonArtworkMapFor(dungeon);
      expect(map, dungeon.id).not.toBeNull();
      expect(map?.kind, dungeon.id).toBe("runewaker");
      if (!map) continue;
      const floor = dungeonArtworkFloorFor(map, dungeon.entrance.footPosition);
      const image = readFileSync(`public${floor.image}`);
      expect(image.toString("ascii", 1, 4), dungeon.id).toBe("PNG");
      expect([image.readUInt32BE(16), image.readUInt32BE(20)]).toEqual([1002, 668]);
      expect(createHash("sha256").update(image).digest("hex")).toBe(floor.checksum);
      expect(dungeonArtworkContains(map, floor, dungeon.entrance.footPosition), dungeon.id).toBe(true);
      expect(dungeonArtworkPoint(map, floor, dungeon.entrance.footPosition).every(Number.isFinite)).toBe(true);
      expect(Math.hypot(...dungeonArtworkHeading(map, floor, dungeon.entrance.footPosition, 0.7))).toBeCloseTo(23, 5);
    }
  });

  it("rejects stale maps when a dungeon environment changes", () => {
    const dungeon = requireDungeonDefinition("forsaken-abbey");
    expect(dungeonArtworkMapFor({ ...dungeon, provenance: { ...dungeon.provenance, coordinateTransform: "changed" } })).toBeNull();
    expect(dungeonArtworkMapFor({ ...dungeon, assets: { ...dungeon.assets, visual: [] } })).toBeNull();
  });
});