import { describe, expect, it } from "vitest";
import { inventorySummary, playerStatsFromSnapshot } from "../src/renderer/playtest-hud.js";

describe("playerStatsFromSnapshot", () => {
  it("reads gold, stamina, seed and inventory from the player entity", () => {
    const stats = playerStatsFromSnapshot([
      { id: "plot:0:0", type: "plot" },
      { id: "player", type: "player", gold: 42, stamina: 30, selectedSeed: "carrot-seed", inventory: { carrot: 3, "carrot-seed": 1 } },
    ]);
    expect(stats.gold).toBe(42);
    expect(stats.stamina).toBe(30);
    expect(stats.selectedSeed).toBe("carrot-seed");
    expect(stats.inventory).toEqual({ carrot: 3, "carrot-seed": 1 });
  });

  it("defaults when the player or fields are missing", () => {
    const stats = playerStatsFromSnapshot([]);
    expect(stats.gold).toBe(0);
    expect(stats.stamina).toBe(0);
    expect(stats.selectedSeed).toBeNull();
    expect(stats.inventory).toEqual({});
  });

  it("drops zero/negative inventory quantities", () => {
    const stats = playerStatsFromSnapshot([
      { id: "player", type: "player", inventory: { carrot: 2, hoe: 0, weed: -1 } },
    ]);
    expect(stats.inventory).toEqual({ carrot: 2 });
  });
});

describe("inventorySummary", () => {
  it("joins inventory items", () => {
    expect(inventorySummary({ inventory: { carrot: 3, hoe: 1 }, gold: 0, stamina: 0, selectedSeed: null })).toBe(
      "carrot ×3 · hoe ×1",
    );
  });

  it("shows a placeholder for an empty inventory", () => {
    expect(inventorySummary({ inventory: {}, gold: 0, stamina: 0, selectedSeed: null })).toBe("items: —");
  });
});