import { describe, expect, it } from "vitest";

import type { TableDefinition } from "@/types/content";

import { lookupTable, resolveTableEntry } from "./tables";

function createSequenceRoller(values: number[]) {
  let index = 0;

  return () => {
    const next = values[index];
    index += 1;
    return next;
  };
}

const d6Table: TableDefinition = {
  id: "table.sample",
  code: "SAMPLE1",
  name: "Sample Table",
  category: "generic",
  page: 1,
  diceKind: "d6",
  usesModifiedRangesRule: true,
  entries: [
    { key: "1", exact: 1, label: "One" },
    { key: "2-5", min: 2, max: 5, label: "Two to Five" },
    { key: "6", exact: 6, label: "Six" },
  ],
  mvp: true,
};

describe("table lookup rules", () => {
  it("finds a matching exact entry", () => {
    const result = lookupTable(d6Table, { roller: createSequenceRoller([6]) });

    expect(result.entry.label).toBe("Six");
    expect(result.roll.total).toBe(6);
  });

  it("clamps modified results when the table uses modified ranges", () => {
    const result = lookupTable(d6Table, {
      roller: createSequenceRoller([6]),
      modifier: 3,
    });

    expect(result.entry.label).toBe("Six");
    expect(result.roll.modifiedTotal).toBe(6);
    expect(result.roll.clamped).toBe(true);
  });

  it("falls back to the nearest numeric entry for direct resolution", () => {
    const result = resolveTableEntry(d6Table, {
      diceKind: "d6",
      rolls: [0],
      total: 4,
      modifiedTotal: 7,
    });

    expect(result.entry.label).toBe("Six");
  });
});