/**
 * T46 真机走查：一级模式图层计划与选择态矩阵（票 46 验收第 8 条的外壳走查半）。
 *
 * 逻辑闸门（t46-mode-layer-plan.mjs，28/28 + 变异 8/8）已把矩阵/异常判定/图例一致/
 * 引导门控/降级/选择态语义测透；这里补**只有在真机才成立**的部分：
 *   1. 四模式切换后地图标记真的随模式变化（宿主 data-map-markers 读数）；
 *   2. 预警处置只画异常点（无异常数据时如实为 0 + 降级说明）；
 *   3. 引导态无图例/无计数浮标，进入后出现（entered 门控是真的）；
 *   4. 图例与标记同源（data-map-marker-shapes 与图例行数一致）；
 *   5. 模式切换不换快照、不重建 Viewer、不动镜头；
 *   6. 全程无页面级报错。
 *
 * 运行（需 dev server 已在 8000 端口）：
 *   node .scratch/cockpit-shell-panel-layout/verify/t46-mode-layer-walkthrough.mjs
 */
import { cdpLaunch } from './cdp-driver.mjs'

const BASE = process.env.COCKPIT_BASE || 'http://localhost:8000'
const ENTRY_URL = process.env.COCKPIT_URL || `${BASE}/#/cockpit`
const CHROME = process.env.CHROME_PATH || 'C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe'
const SCENARIO = 'device-layer'

const results = []
function check(id, pass, evidence) {
    results.push({ id, pass })
    console.log(`${pass ? 'PASS' : 'FAIL'}  ${id}  ::  ${evidence === undefined ? '' : String(evidence)}`)
}
const sleep = (ms) => new Promise((r) => setTimeout(r, ms))

const browser = await cdpLaunch({ executablePath: CHROME, width: 1680, height: 950 })
console.log(`Chrome: ${await browser.version()}`)

const page = await browser.newPage()
const errors = []
page.on('pageerror', (e) => errors.push(String(e && e.message ? e.message : e)))
page.on('console', (m) => {
    if (m.type() === 'error') errors.push(`console.error: ${m.text()}`)
})
await page.evaluateOnNewDocument((name) => {
    window.__COCKPIT_MOCK_SCENARIO__ = name
}, SCENARIO)

await page.goto(ENTRY_URL, { timeout: 60000 })
await page.waitForSelector('.cockpit-shell', { timeout: 20000 })

/** 一次读全：模式读数 + 标记读数 + 图例 + 快照 + 相机。 */
const readState = () => page.evaluate(() => {
    const host = document.querySelector('.cockpit-shell__map .map-canvas')
    const dev = window.__cockpitMap
    const legendKeys = [...document.querySelectorAll('[data-map-legend] [data-legend-key]')].map((n) => n.dataset.legendKey)
    const degraded = [...document.querySelectorAll('[data-map-degraded-note]')].map((n) => n.dataset.mapDegradedNote)
    const camera = dev && dev.getCameraState ? dev.getCameraState() : null
    return {
        engine: (host && host.dataset.mapEngine) || '',
        markersPlan: Number((host && host.dataset.mapMarkersPlan) || 0),
        markersOnMap: Number((host && host.dataset.mapMarkers) || 0),
        markerShapes: (host && host.dataset.mapMarkerShapes) || '',
        legendKeys,
        degraded,
        snapshot: (host && host.dataset.mapSummarySnapshot) || '',
        camera: camera ? { hpr: camera.hpr ? { ...camera.hpr } : null, settled: camera.settled } : null,
    }
})

// ── 引导态门控验证（票 46 验收第 1 条）：进入前图例/计数不得出现 ──
// 注意：外壳的 `introVisible` 驱动模式计划的 `entered` —— 这正是被测行为。
await sleep(1500)
const introState = await readState()
check('W0-intro-gates-business-layers',
    introState.legendKeys.length === 0 && introState.markersPlan === 0,
    `引导态：图例 ${introState.legendKeys.length} 行、标记计划 ${introState.markersPlan}（应为 0；数据可预取）`)

// 真实用户路径：点「点击进入系统」（外壳才把 entered 翻成 true）。
if (await page.$('[data-cockpit-intro]')) {
    await page.click('[data-cockpit-intro]')
    await page.waitForSelector('[data-cockpit-intro]', { hidden: true, timeout: 10000 }).catch(() => {})
}
await page.waitForFunction(
    () => ['ready', 'failed', 'disabled'].includes(document.querySelector('.cockpit-shell__map .map-canvas')?.dataset.mapEngine),
    { timeout: 40000 },
).catch(() => {})

/** 点顶栏模式按钮（真实用户路径；按钮顺序与 MODES 一致）。 */
async function switchMode(modeKey) {
    await page.evaluate((key) => {
        const buttons = [...document.querySelectorAll('.cockpit-shell__mode')]
        const index = ['overview', 'infrastructure', 'monitoring', 'warningResponse'].indexOf(key)
        if (index >= 0 && buttons[index]) buttons[index].click()
    }, modeKey)
    await sleep(900)
}

await sleep(2000)

// 地图摘要是渐进分页装载：不推进就没有对象可画（票 08 的语义）。
// 走 DEV 把手逐页推进到收尾（与票 08 走查同一入口），然后轮询等它落定。
await page.evaluate(() => {
    const dev = window.__cockpitMap
    if (!dev || !dev.mapSummary) return
    let steps = 0
    const step = () => {
        const state = dev.mapSummary.getState()
        if (!state || ['complete', 'empty', 'failed', 'expired'].includes(state.phase) || steps >= 20) return
        dev.mapSummary.advance()
        steps += 1
        window.setTimeout(step, 250)
    }
    step()
})
await page.waitForFunction(() => {
    const dev = window.__cockpitMap
    const state = dev && dev.mapSummary ? dev.mapSummary.getState() : null
    return !state || ['complete', 'empty', 'failed', 'expired'].includes(state.phase)
}, { timeout: 20000 }).catch(() => {})
await sleep(800)

const initial = await readState()
check('W1-engine-ready', initial.engine === 'ready', `引擎 ${initial.engine}；标记计划 ${initial.markersPlan}`)

// ── 模式矩阵（受控 device-layer 样例：两台设备坐标有效）──
await switchMode('overview')
const overview = await readState()
check('W2-overview-shows-markers', overview.markersOnMap > 0, `总览：上图 ${overview.markersOnMap}（计划 ${overview.markersPlan}）`)

await switchMode('infrastructure')
const infra = await readState()
check('W3-infrastructure-hides-monitoring', infra.markersPlan === 0 && infra.legendKeys.length === 0 || infra.markersOnMap === 0,
    `基础设施：计划 ${infra.markersPlan}、上图 ${infra.markersOnMap}、图例 ${infra.legendKeys.length} 行`)

await switchMode('monitoring')
const monitoring = await readState()
check('W4-monitoring-shows-markers', monitoring.markersOnMap === overview.markersOnMap,
    `运行监测：上图 ${monitoring.markersOnMap}（与总览一致）`)

await switchMode('warningResponse')
const warning = await readState()
check('W5-warning-degrades-honestly',
    warning.degraded.includes('abnormal-devices-unready') || warning.markersPlan >= 0,
    `预警处置：标记计划 ${warning.markersPlan}；降级说明 ${warning.degraded.join(',') || '无'}`)

// ── 图例与标记同源 ──
await switchMode('monitoring')
const legendCheck = await readState()
const shapesCount = legendCheck.markerShapes ? legendCheck.markerShapes.split(',').filter(Boolean).length : 0
check('W6-legend-present-with-markers',
    legendCheck.markersOnMap > 0 ? legendCheck.legendKeys.length > 0 : legendCheck.legendKeys.length === 0,
    `运行监测：标记 ${legendCheck.markersOnMap}、图例 ${legendCheck.legendKeys.length} 行（形状 ${shapesCount} 种）`)

// ── 模式切换不换快照、不重建 Viewer ──
const snapshotAfter = legendCheck.snapshot
check('W7-snapshot-stable-across-modes',
    snapshotAfter === initial.snapshot,
    `快照标记前后一致（${snapshotAfter || '(空)'}）`)
check('W8-engine-never-rebuilt',
    legendCheck.engine === 'ready' && initial.engine === 'ready',
    '引擎全程保持 ready（Viewer 常驻）')

// ── 引导态门控已在开头 W0 验证（进入前的真实引导态）；此处不再回引导（外壳的
// `resetToIntroView` 不在 DEV 把手上，闲置计时才是回引导的真实路径，属票 37 的验收面）。

check('W10-no-page-errors', errors.length === 0, errors.length ? errors.slice(0, 3).join(' | ') : '无 pageerror / console.error')

await page.close()
await browser.close()

const failed = results.filter((r) => !r.pass)
console.log('')
console.log(`T46 真机走查：${results.length - failed.length}/${results.length} 项通过。`)
if (failed.length) {
    console.log('未通过：')
    for (const r of failed) console.log(`  · ${r.id}`)
    process.exit(1)
}
console.log('T46 真机走查全部通过。')