import { describe, expect, it } from "vitest";
import {
  aliasToIconPx,
  buildIngredientCoverSprite,
  findAliasForIconPx,
  foldAccents,
  INGREDIENT_SPRITE_CELL,
  isPreferredVariantAlias,
  normalizeIngredientAliasKey,
  parseIngredientSpritesBentext,
  resolveIconPxForIngredientName
} from "./sprites.mjs";

describe("parseIngredientSpritesBentext", () => {
  it("parse les blocs --- avec coordonnées et alias (| = synonymes)", () => {
    const raw = `2 0
eau|vinaigre de riz|Vinaigre blanc
---
0 4
carnet
---
8 1
fromage
`;
    const { byAlias, preferredAliases, csv } = parseIngredientSpritesBentext(raw);

    // eau → (0, 64) ; carnet → (128, 0) ; fromage → (32, 256) — ligne 8 = preferred
    expect(byAlias.eau).toEqual({ x: 0, y: 64, X: 0, Y: 64 });
    expect(byAlias["vinaigre de riz"]).toEqual({ x: 0, y: 64, X: 0, Y: 64 });
    expect(byAlias["vinaigre blanc"]).toEqual({ x: 0, y: 64, X: 0, Y: 64 });
    expect(byAlias.carnet).toEqual({ x: 128, y: 0, X: 128, Y: 0 });
    expect(byAlias.fromage).toEqual({ x: 32, y: 256, X: 32, Y: 256 });

    expect(preferredAliases.has("fromage")).toBe(true);
    expect(preferredAliases.has("eau")).toBe(false);
    expect(preferredAliases.has("carnet")).toBe(false);

    expect(csv).toContain("carnet");
    expect(csv).toContain("fromage");
  });

  it("ignore un bloc sans coordonnées valides", () => {
    const raw = `not_a_coord
eau
---
0 0
couvert
`;
    const { byAlias } = parseIngredientSpritesBentext(raw);
    expect(byAlias.eau).toBeUndefined();
    expect(byAlias.couvert).toEqual({ x: 0, y: 0, X: 0, Y: 0 });
  });

  it("conserve la première définition en cas de conflit d’alias", () => {
    const raw = `0 0
eau
---
1 0
eau
`;
    const { byAlias } = parseIngredientSpritesBentext(raw);
    expect(byAlias.eau).toEqual({ x: 0, y: 0, X: 0, Y: 0 });
  });

  it("retire le BOM et tolère CRLF entre blocs", () => {
    const raw = "\uFEFF0 0\r\ncouvert\r\n---\r\n0 1\r\nassiette\r\n";
    const { byAlias } = parseIngredientSpritesBentext(raw);
    expect(byAlias.couvert).toBeDefined();
    expect(byAlias.assiette).toBeDefined();
  });
});

describe("resolveIconPxForIngredientName", () => {
  const byAlias = {
    riz: { x: 0, y: 0 },
    "riz gluant": { x: 32, y: 0 },
    avocat: { x: 64, y: 0 }
  };

  it("trouve l’alias direct", () => {
    expect(resolveIconPxForIngredientName("riz", byAlias)).toEqual({ x: 0, y: 0 });
  });

  it("recherche sans accents", () => {
    expect(resolveIconPxForIngredientName("AVOCAT", byAlias)).toEqual({ x: 64, y: 0 });
  });

  it("retombe sur l’alias le plus long en inclusion", () => {
    expect(resolveIconPxForIngredientName("Riz gluant blanc", byAlias)).toEqual({ x: 32, y: 0 });
  });

  it("retourne null si pas de correspondance", () => {
    expect(resolveIconPxForIngredientName("introuvable", byAlias)).toBeNull();
  });

  it("gère un nom composé avec / ou et (segments)", () => {
    const local = { "eau": { x: 0, y: 0 }, "sel": { x: 32, y: 0 } };
    expect(resolveIconPxForIngredientName("Sel / eau", local)).toEqual({ x: 32, y: 0 });
  });
});

describe("aliasToIconPx", () => {
  it("lit les coordonnées (x, y) ou (X, Y)", () => {
    expect(aliasToIconPx({ a: { x: 1, y: 2 } }, "a")).toEqual({ x: 1, y: 2 });
    expect(aliasToIconPx({ a: { X: 3, Y: 4 } }, "a")).toEqual({ x: 3, y: 4 });
  });

  it("retourne null si alias ou coords absentes", () => {
    expect(aliasToIconPx({}, "x")).toBeNull();
    expect(aliasToIconPx({ a: { x: "a", y: 2 } }, "a")).toBeNull();
  });
});

describe("findAliasForIconPx", () => {
  it("renvoie l’alias correspondant aux coordonnées exactes", () => {
    const byAlias = { a: { x: 0, y: 0 }, b: { x: 32, y: 0 } };
    expect(findAliasForIconPx(byAlias, { x: 32, y: 0 })).toBe("b");
    expect(findAliasForIconPx(byAlias, { x: 100, y: 0 })).toBeNull();
  });
});

describe("isPreferredVariantAlias", () => {
  it("matche case-insensitive et tolère un set vide", () => {
    const preferred = new Set(["fromage", "tomate"]);
    expect(isPreferredVariantAlias(preferred, "Fromage")).toBe(true);
    expect(isPreferredVariantAlias(preferred, "autre")).toBe(false);
    expect(isPreferredVariantAlias(new Set(), "fromage")).toBe(false);
    expect(isPreferredVariantAlias(preferred, "")).toBe(false);
  });
});

describe("buildIngredientCoverSprite", () => {
  const sheet = { width: 512, height: 1024 };

  it("renvoie null si coords ou sheet invalides", () => {
    expect(buildIngredientCoverSprite(null, sheet)).toBeNull();
    expect(buildIngredientCoverSprite({ x: 0, y: 0 }, null)).toBeNull();
  });

  it("calcule col/row depuis les pixels et fige sheet/cell", () => {
    const result = buildIngredientCoverSprite({ x: 64, y: 256 }, sheet);
    expect(result).toEqual({
      sheet: "/ingredients.png",
      col: 2,
      row: 8,
      cell: INGREDIENT_SPRITE_CELL,
      sheetWidth: 512,
      sheetHeight: 1024
    });
  });
});

describe("normalizeIngredientAliasKey & foldAccents", () => {
  it("normalise espaces et casse", () => {
    expect(normalizeIngredientAliasKey("  Riz   gluant  ")).toBe("riz gluant");
  });
  it("plie les accents", () => {
    expect(foldAccents("Crème pâtissière")).toBe("creme patissiere");
  });
});