import { test } from 'node:test';
import assert from 'node:assert/strict';
import { resolveTileEffect, rollsNeededFor, DIE_SIZES } from './tileEffects.js';
import { board } from './board.js';
import rollTables from './rollTables.js';

const spaces = Object.values(board.spaces);
const byType = (type) => spaces.filter((s) => s.type === type);

test('DIE_SIZES covers every die actually referenced in the real board', () => {
  const usedDice = new Set(spaces.map((s) => s.die).filter(Boolean));
  for (const die of usedDice) assert.ok(DIE_SIZES[die], `unknown die size: ${die}`);
});

test('rollsNeededFor asks for exactly one roll per referenced table', () => {
  const multi = byType('roll_table_ref').find((s) => s.externalTables.length === 3);
  assert.ok(multi, 'expected a 3-table roll_table_ref tile in the real board');
  assert.equal(rollsNeededFor(multi).length, 3);

  const single = byType('dice_space')[0];
  assert.equal(rollsNeededFor(single).length, 1);

  const payday = byType('payday')[0];
  assert.deepEqual(rollsNeededFor(payday), []);
});

test('dice_space resolves against its real referenced table with an exact banded effect', () => {
  const space = byType('dice_space')[0];
  const table = rollTables.tables.find((t) => t.source_doc_id === space.externalTables[0]);
  assert.ok(table, 'dice_space tile should reference a real table');

  const [loStr] = table.entries[0].range.split('-');
  const roll = Number(loStr);
  const result = resolveTileEffect(space, [roll]);
  assert.deepEqual(result.statDelta, table.entries[0].effect);
  assert.equal(result.todo, false, 'a real referenced table is not an invented placeholder');
});

test('multi-table roll_table_ref sums every referenced table\'s effect', () => {
  const multi = byType('roll_table_ref').find((s) => s.externalTables.length >= 2);
  const rolls = rollsNeededFor(multi).map(() => 1); // roll the minimum on every table

  const expected = {};
  for (const tableId of multi.externalTables) {
    const table = rollTables.tables.find((t) => t.source_doc_id === tableId);
    for (const [stat, delta] of Object.entries(table.entries[0].effect)) {
      expected[stat] = (expected[stat] ?? 0) + delta;
    }
  }

  assert.deepEqual(resolveTileEffect(multi, rolls).statDelta, expected);
});

test('stop applies the rolled D8 value directly to age, no table lookup', () => {
  const stop = byType('stop')[0];
  assert.equal(stop.die, 'D8');
  const result = resolveTileEffect(stop, [5]);
  assert.deepEqual(result.statDelta, { age: 5 });
  assert.equal(result.todo, false, 'age += roll is a specified mechanic, not invented content');
});

test('choice tiles are a harmless no-op while no board-graph.json choices exist yet', () => {
  const choice = byType('choice')[0];
  assert.equal(choice.choices, undefined);
  const result = resolveTileEffect(choice, []);
  assert.deepEqual(result.statDelta, {});
  assert.equal(result.todo, true);
});

test('inline_table tiles resolve against a synthesized placeholder, clearly marked todo', () => {
  const inline = byType('inline_table')[0];
  assert.deepEqual(rollsNeededFor(inline), [inline.die]);
  const max = DIE_SIZES[inline.die];
  const result = resolveTileEffect(inline, [max]); // top of the range
  assert.equal(result.todo, true);
  assert.equal(typeof result.statDelta.cash, 'number');
});

test('payday and named cash_bonus tiles use fixed placeholder amounts, no roll needed', () => {
  const payday = byType('payday')[0];
  assert.deepEqual(rollsNeededFor(payday), []);
  const paydayResult = resolveTileEffect(payday, []);
  assert.ok(paydayResult.statDelta.cash > 0);
  assert.equal(paydayResult.todo, true);

  const hundredK = byType('cash_bonus').find((s) => s.label === '100K');
  assert.deepEqual(resolveTileEffect(hundredK, []).statDelta, { cash: 100000 });

  const tenK = byType('cash_bonus').find((s) => s.label === '10K');
  assert.deepEqual(resolveTileEffect(tenK, []).statDelta, { cash: 10000 });
});

test('401k (a cash_bonus with a die but no table) falls into the synthesized placeholder path', () => {
  const four01k = byType('cash_bonus').find((s) => s.label === '401k');
  assert.ok(four01k, 'expected a 401k cash_bonus tile');
  assert.equal(four01k.die, 'D20');
  assert.deepEqual(rollsNeededFor(four01k), ['D20']);
  const result = resolveTileEffect(four01k, [20]);
  assert.equal(result.todo, true);
});

test('every real tile resolves without throwing across the full range of its die', () => {
  for (const space of spaces) {
    const dice = rollsNeededFor(space);
    for (const roll of [1, ...dice.map((d) => DIE_SIZES[d])]) {
      const rolls = dice.map(() => roll);
      assert.doesNotThrow(() => resolveTileEffect(space, rolls), `${space.id} (${space.type}) threw on roll=${roll}`);
    }
  }
});