import { test } from 'node:test'
import assert from 'node:assert/strict'
import {
	addPoint,
	createMatch,
	settleMatch,
	getServing,
	getWinner,
	parseTeams,
	setFirstServer,
	swapCourt,
	undo,
} from '../src/match.js'
import { renderKeyboard, renderText } from '../src/render.js'

test('parseTeams：雙打 / 單打 / 目標分數', () => {
	assert.deepEqual(parseTeams('小明 小華 vs 阿強 阿美'), {
		teams: [['小明', '小華'], ['阿強', '阿美']],
		target: 21,
	})
	assert.deepEqual(parseTeams('小明/小華 VS 阿強、阿美 15'), {
		teams: [['小明', '小華'], ['阿強', '阿美']],
		target: 15,
	})
	assert.deepEqual(parseTeams('小明 vs 阿強').teams, [['小明'], ['阿強']])
	assert.ok(parseTeams('小明 小華 vs 阿強').error)
	assert.ok(parseTeams('小明 小華').error)
	assert.ok(parseTeams('').error)
})

test('雙打發球規則：0 分右區、同隊得分換位、失分換發不換位', () => {
	const m = createMatch(['A1', 'A2'], ['B1', 'B2'])
	assert.equal(addPoint(m, 0), false, '未選先發不能加分')
	setFirstServer(m, 0)

	let s = getServing(m)
	assert.deepEqual([s.server, s.court, s.receiver], ['A1', 'right', 'B1'])

	addPoint(m, 0) // A 1:0，A 隊換位，1 分左區 → A1 在左區發
	s = getServing(m)
	assert.deepEqual([m.score, s.server, s.court, s.receiver], [[1, 0], 'A1', 'left', 'B2'])

	addPoint(m, 0) // A 2:0，再換位，2 分右區 → A1 仍在右區發
	s = getServing(m)
	assert.deepEqual([s.server, s.court, s.receiver], ['A1', 'right', 'B1'])

	addPoint(m, 1) // B 得分 2:1，換發，B 隊不換位，1 分左區 → B2 發
	s = getServing(m)
	assert.deepEqual([m.score, s.team, s.server, s.court], [[2, 1], 1, 'B2', 'left'])
	// 接發者：A 隊左區的人。A 隊換位兩次回到原位 → A2 在左區
	assert.equal(s.receiver, 'A2')
})

test('單打發球：只看分數奇偶決定發球區', () => {
	const m = createMatch(['A'], ['B'])
	setFirstServer(m, 1)
	addPoint(m, 1)
	const s = getServing(m)
	assert.deepEqual([s.server, s.court, s.receiver], ['B', 'left', 'A'])
})

test('swapCourt 只能在 0:0，且會改變先發者', () => {
	const m = createMatch(['A1', 'A2'], ['B1', 'B2'])
	assert.equal(swapCourt(m, 0), true)
	setFirstServer(m, 0)
	assert.equal(getServing(m).server, 'A2')
	addPoint(m, 0)
	assert.equal(swapCourt(m, 0), false)
})

test('undo 可復原分數、發球權與站位', () => {
	const m = createMatch(['A1', 'A2'], ['B1', 'B2'])
	setFirstServer(m, 0)
	addPoint(m, 0)
	addPoint(m, 1)
	assert.equal(undo(m), true)
	assert.deepEqual(m.score, [1, 0])
	assert.equal(m.server, 0)
	assert.equal(getServing(m).server, 'A1')
	assert.equal(undo(m), true)
	assert.deepEqual(m.score, [0, 0])
	assert.equal(undo(m), false)
})

test('勝負判定：21 分、Deuce 領先 2 分、30 分封頂', () => {
	const m = createMatch(['A'], ['B'])
	setFirstServer(m, 0)
	m.score = [20, 20]
	addPoint(m, 0)
	assert.equal(getWinner(m), null, '21:20 未分勝負')
	addPoint(m, 0)
	assert.equal(getWinner(m), 0, '22:20 A 勝')
	assert.equal(m.finished, true)
	assert.equal(addPoint(m, 1), false, '結束後不能加分')

	const n = createMatch(['A'], ['B'])
	setFirstServer(n, 0)
	n.score = [29, 29]
	addPoint(n, 1)
	assert.equal(getWinner(n), 1, '30:29 直接獲勝')
})

test('renderText 會標記發球者、跳脫 HTML，並依畫面位置排列（上 1 2 / 下 4 3）', () => {
	const m = createMatch(['<A1>', 'A2'], ['B1', 'B2'])
	setFirstServer(m, 0)
	let text = renderText(m)
	assert.match(text, /🅰️ 🏸&lt;A1&gt; \/ A2/)
	assert.match(text, /🅱️ B2 \/ B1/, '下排 B2(4) 在左、B1(3) 在右')
	assert.match(text, /發球：🅰️ <b>&lt;A1&gt;<\/b>（右區）　接發：B1/)
	addPoint(m, 0) // A 得分換位：A1 到左區 → 畫面上排右邊
	text = renderText(m)
	assert.match(text, /🅰️ A2 \/ 🏸&lt;A1&gt;/)
})

test('結算：時間到以目前比分定勝負，可 undo；鍵盤為三排', () => {
	const m = createMatch(['A'], ['B'])
	assert.equal(settleMatch(m), false, '未選先發不能結算')
	setFirstServer(m, 0)
	assert.deepEqual(
		renderKeyboard(m).inline_keyboard.map((r) => r.map((b) => b.text)),
		[['🅰️ +1', '🅱️ +1'], ['↩️ 上一步', '🔄 重新開始'], ['⏱ 結算', '🏁 結束']],
	)
	addPoint(m, 0)
	addPoint(m, 0)
	addPoint(m, 1)
	assert.equal(settleMatch(m), true)
	assert.equal(m.finished, true)
	assert.equal(getWinner(m), 0)
	assert.match(renderText(m), /⏱ 時間到結算　2 : 1　🅰️ 獲勝/)
	assert.equal(addPoint(m, 1), false)
	assert.equal(undo(m), true)
	assert.equal(m.finished, false)
	assert.equal(m.settled, false)
	assert.deepEqual(m.score, [2, 1])

	addPoint(m, 1)
	settleMatch(m)
	assert.equal(getWinner(m), null)
	assert.match(renderText(m), /2 : 2　平手/)
})

test('scoreList 沿用 web 版格式 [round, starter, winCount, winner]，undo/reset 一併處理', () => {
	const m = createMatch(['A1', 'A2'], ['B1', 'B2'])
	setFirstServer(m, 0)
	addPoint(m, 0) // 0:0 A 發，偶數 → 1 號位(0)
	addPoint(m, 0) // 1:0 A 發，奇數 → 2 號位(1)，連勝 1
	addPoint(m, 1) // 2:0 A 發，偶數 → 0；B 得分，連勝歸 0
	addPoint(m, 1) // 2:1 B 發，奇數 → 4 號位(3)，B 連勝 1
	addPoint(m, 1) // 2:2 B 發，偶數 → 3 號位(2)，B 連勝 2
	assert.deepEqual(m.scoreList, [
		[0, 0, 0, 0],
		[1, 1, 1, 0],
		[2, 0, 0, 1],
		[3, 3, 1, 1],
		[4, 2, 2, 1],
	])
	assert.ok(!/starter|winCount/.test(renderText(m)), '不顯示在 TG 記分板')
	undo(m)
	assert.equal(m.scoreList.length, 4)
	settleMatch(m)
	undo(m)
	assert.equal(m.scoreList.length, 4, '結算/復原不影響 scoreList')
	const singles = createMatch(['A'], ['B'])
	setFirstServer(singles, 1)
	addPoint(singles, 0)
	assert.deepEqual(singles.scoreList, [[0, 2, 0, 0]], '單打同樣以位置編號記')
})