/**
 * T21 真机走查：本地 DEM（地形）+ 本地影像切片 + 免费全局底图，真的按配置挂到引擎上。
 *
 * 关键是**用磁盘上那份真实配置**（`public/cockpit/config.json`）注入，而不是在脚本里另写一份，
 * 这样跑通就同时证明「配置文件 → 配置服务 → 引擎」这条链路是对的。
 *
 * 断言里最有分量的一条：所有 `/gis/**` 响应必须全是 200 —— DEM 是 TMS（layer.json 里 scheme=tms，
 * 由 Cesium 自己翻）而影像是 TMS 需要 `{reverseY}`；一旦 y 轴约定搞错，这里立刻会冒出 404。
 *
 * 运行（需先起 `yarn dev` 且 `.env.local` 配了 COCKPIT_GIS_MOUNTS）：
 *   node .scratch/cockpit-shell-panel-layout/verify/t21-gis-walkthrough.mjs
 */
import { readFileSync } from 'node:fs'
import { join } from 'node:path'
import { tmpdir } from 'node:os'

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 PUPPETEER = 'file:///C:/Users/ASUS/.dsh/profiles/desktop/node_modules/puppeteer-core/lib/puppeteer/puppeteer-core.js'
const OUT = join(tmpdir(), 'cockpit-t21-yuanling.png')

/** 沅陵县城附近（用来把相机压到精细数据上）。 */
const YUANLING = { lon: 110.396, lat: 28.455, height: 0 }

const config = JSON.parse(readFileSync(new URL('../../../public/cockpit/config.json', import.meta.url), 'utf8'))

/** Web Mercator XYZ 瓦片的经纬度范围（用来断言「只为声明范围内的瓦片发请求」）。 */
function tileBounds(z, x, y) {
    const n = 2 ** z
    const lonLeft = (x / n) * 360 - 180
    const lonRight = ((x + 1) / n) * 360 - 180
    const latTop = (Math.atan(Math.sinh(Math.PI * (1 - (2 * y) / n))) * 180) / Math.PI
    const latBottom = (Math.atan(Math.sinh(Math.PI * (1 - (2 * (y + 1)) / n))) * 180) / Math.PI
    return [lonLeft, latBottom, lonRight, latTop]
}

function intersects(a, b) {
    return a[0] <= b[2] && a[2] >= b[0] && a[1] <= b[3] && a[3] >= b[1]
}

const declaredBounds = config.map.overlays[0].bounds

const results = []
function check(id, desc, pass, evidence) {
    results.push({ id, desc, pass })
    console.log(`${pass ? 'PASS' : 'FAIL'}  ${id}  ${desc}${evidence ? `  — ${evidence}` : ''}`)
}

const sleep = (ms) => new Promise((r) => setTimeout(r, ms))

const puppeteer = (await import(PUPPETEER)).default
const browser = await puppeteer.launch({
    executablePath: CHROME,
    headless: true,
    userDataDir: join(tmpdir(), 'cockpit-t21-profile'),
    defaultViewport: { width: 1680, height: 950 },
    args: ['--no-sandbox', '--disable-dev-shm-usage', '--no-first-run', '--no-default-browser-check'],
})
console.log(`Chrome: ${await browser.version()}`)

try {
    const page = await browser.newPage()
    const gisResponses = []
    const errors = []
    page.on('response', (response) => {
        const url = response.url()
        if (url.includes('/gis/')) gisResponses.push({ url: url.replace(BASE, ''), status: response.status() })
    })
    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((injected) => {
        // 票 30：本走查直接测"进入之后"的图层加载，所以关掉引导层（否则它会挡住滚轮/点击）。
        window.__COCKPIT_CONFIG__ = { ...injected, map: { ...injected.map, intro: { enabled: false } } }
    }, config)

    await page.goto(ENTRY_URL, { waitUntil: 'networkidle2', timeout: 60000 })
    await page.waitForSelector('.cockpit-shell', { timeout: 20000 })
    await page
        .waitForFunction(
            () => document.querySelector('.cockpit-shell__map .map-canvas')?.dataset.mapEngine === 'ready',
            { timeout: 60000 },
        )
        .catch(() => {})
    await page.waitForFunction(() => !!window.__cockpitMap, { timeout: 20000 }).catch(() => {})
    await sleep(2500)

    const readState = () =>
        page.evaluate(() => {
            const host = document.querySelector('.cockpit-shell__map .map-canvas')
            return {
                engine: (host && host.dataset.mapEngine) || '',
                basemap: (host && host.dataset.mapBasemap) || '',
                terrain: (host && host.dataset.mapTerrain) || '',
                pill: host?.querySelector('[data-map-engine-status]')?.textContent?.trim() || '',
                stats: window.__cockpitMap ? window.__cockpitMap.getLifecycleStats() : null,
            }
        })

    // ---------- A1 三层都被认出并挂上 ----------
    const state = await readState()
    check(
        'A1-layers-applied',
        '离线全局底图 + 本地 DEM 地形 + 本地影像叠加层都按配置挂上（dataset 与浮标一致）',
        state.engine === 'ready' &&
            state.basemap === 'natural-earth' &&
            state.terrain === 'ready' &&
            state.stats?.terrain === 'ready' &&
            state.stats?.overlays === 1 &&
            state.pill.includes('叠加影像 1 层'),
        JSON.stringify({ ...state, stats: state.stats && { terrain: state.stats.terrain, overlays: state.stats.overlays } }),
    )

    // ---------- A2 bounds 生效：本地切片只为声明范围内的瓦片发请求 ----------
    // 注意：整球视角下 Cesium **会**为范围内那几块低层瓦片发请求，这是对的行为；
    // 要断言的是「不越界」，不是「一个都不发」（越界才会刷一屏 404）。
    const parsePicTile = (url) => {
        const m = url.match(/^\/gis\/pic3\/(\d+)\/(\d+)\/(\d+)\.png$/)
        return m ? { z: Number(m[1]), x: Number(m[2]), y: Number(m[3]) } : null
    }
    const picTilesSoFar = gisResponses.map((item) => parsePicTile(item.url)).filter(Boolean)
    const detailedOutside = picTilesSoFar.filter((tile) => tile.z >= 5 && !intersects(tileBounds(tile.z, tile.x, tile.y), declaredBounds))
    check(
        'A2-bounds-respected',
        '本地影像的**细层**（z≥5）只请求声明范围内的瓦片（低层是 Cesium 的祖先预加载，越界属正常）',
        detailedOutside.length === 0,
        JSON.stringify({ requested: picTilesSoFar.length, maxZ: Math.max(0, ...picTilesSoFar.map((t) => t.z)), outside: detailedOutside.slice(0, 3) }),
    )

    // ---------- A3 压到沅陵并拉近：地形与影像都开始取细瓦片，且全部 200 ----------
    await page.evaluate((point) => {
        window.__cockpitMap.setCameraFocus(point)
    }, YUANLING)
    await sleep(1500)

    // 滚轮是票 03 契约里的「弹簧臂距离」：setCameraFocus 只换中心、保持距离（ADR 0008），
    // 所以要真的看到精细数据，得像用户那样滚轮拉近。注意别拉过头：相机高度是按**椭球**算的
    // （票 03 的地面拾取走 pickEllipsoid），拉到几百米就会钻进山头里，画面全黑 —— 停在公里级。
    const canvas = await page.evaluate(() => {
        const c = document.querySelector('.cockpit-shell__map .map-canvas canvas')
        const r = c.getBoundingClientRect()
        return { x: r.x + r.width / 2, y: r.y + r.height / 2 }
    })
    const readCamera = () =>
        page.evaluate(() => {
            const state = window.__cockpitMap.getCameraState()
            return { range: Math.round(state.hpr.range), pivot: state.pivot }
        })

    await page.mouse.move(canvas.x, canvas.y)
    for (let step = 0; step < 16; step++) {
        const camera = await readCamera()
        if (camera.range <= 8000) break
        await page.mouse.wheel({ deltaY: -900 })
        await sleep(400)
    }
    await sleep(9000)
    const cameraAtShot = await readCamera()

    const bad = gisResponses.filter((item) => item.status !== 200)
    const demTiles = gisResponses.filter((item) => item.url.startsWith('/gis/dem/') && item.url.endsWith('.terrain'))
    const picTiles = gisResponses.filter((item) => item.url.startsWith('/gis/pic3/'))
    const levels = demTiles.map((item) => Number((item.url.match(/\/(\d+)\/\d+\/\d+\.terrain$/) || [])[1])).filter(Number.isFinite)
    check(
        'A3-local-tiles-200',
        '压到沅陵拉近后：本地 DEM 与本地影像都在取瓦片，且**没有一条 404**（y 轴约定与 availability 都对）',
        demTiles.length > 0 && picTiles.length > 0 && bad.length === 0,
        JSON.stringify({ dem: demTiles.length, pic: picTiles.length, maxLevel: Math.max(...levels), bad: bad.slice(0, 3) }),
    )

    check(
        'A3-terrain-high-zoom',
        '拉近后取到了高等级 DEM 瓦片（说明精细区域真的被加载，而不是只有 layer.json）',
        Math.max(...levels) >= 8,
        JSON.stringify({ maxLevel: Math.max(...levels), tail: demTiles.slice(-3) }),
    )

    check(
        'A3-camera-over-yuanling',
        '镜头停在沅陵上空且距离在公里级（避免钻进山头导致黑屏；也证明换中心真的生效）',
        cameraAtShot.pivot &&
            Math.abs(cameraAtShot.pivot.lon - YUANLING.lon) < 0.05 &&
            Math.abs(cameraAtShot.pivot.lat - YUANLING.lat) < 0.05 &&
            cameraAtShot.range > 500 &&
            cameraAtShot.range <= 8000,
        JSON.stringify(cameraAtShot),
    )

    await page.screenshot({ path: OUT })
    check('A3-screenshot', `沅陵视角截图已落盘：${OUT}`, true, OUT)

    check('A4-no-page-errors', '全程无页面级报错', errors.length === 0, JSON.stringify(errors.slice(0, 3)))

    // ---------- A5 地形地址配错：明确失败态，外壳与底图照常 ----------
    {
        const brokenPage = await browser.newPage()
        try {
            await brokenPage.evaluateOnNewDocument((injected) => {
                window.__COCKPIT_CONFIG__ = { ...injected, map: { ...injected.map, intro: { enabled: false } } }
            }, { map: { basemap: { source: 'natural-earth' }, terrain: { url: '/gis/definitely-missing-dem' } } })
            await brokenPage.goto(ENTRY_URL, { waitUntil: 'networkidle2', timeout: 60000 })
            await brokenPage.waitForSelector('.cockpit-shell', { timeout: 20000 })
            await brokenPage
                .waitForFunction(
                    () => document.querySelector('.cockpit-shell__map .map-canvas')?.dataset.mapTerrain === 'invalid',
                    { timeout: 30000 },
                )
                .catch(() => {})
            const broken = await brokenPage.evaluate(() => {
                const host = document.querySelector('.cockpit-shell__map .map-canvas')
                return {
                    engine: (host && host.dataset.mapEngine) || '',
                    terrain: (host && host.dataset.mapTerrain) || '',
                    basemap: (host && host.dataset.mapBasemap) || '',
                    pill: host?.querySelector('[data-map-engine-status]')?.textContent?.trim() || '',
                }
            })
            check(
                'A5-terrain-failure-state',
                'DEM 地址配错时：地形标成 invalid、浮标写明失败并说明回退椭球，引擎与底图不受影响',
                broken.engine === 'ready' &&
                    broken.terrain === 'invalid' &&
                    broken.basemap === 'natural-earth' &&
                    broken.pill.includes('地形加载失败') &&
                    broken.pill.includes('回退椭球'),
                JSON.stringify(broken),
            )
        } finally {
            await brokenPage.close()
        }
    }

    // ---------- A6/A7 3D Tiles 入口（票 21 第 2 条：入口留好并能如实报状态） ----------
    // A6 用夹具（只有包围盒的合法 tileset，服务在 /gis/tiles）证明链路真通；
    // A7 用维护者本机那份 yuanlingSHP（缺根 tileset.json）证明失败是**可见的**，不是静默吞掉。
    {
        const tilesPage = await browser.newPage()
        try {
            await tilesPage.evaluateOnNewDocument((injected) => {
                window.__COCKPIT_CONFIG__ = { ...injected, map: { ...injected.map, intro: { enabled: false } } }
            }, {
                map: {
                    basemap: { source: 'natural-earth' },
                    tilesets: [{ url: '/gis/tiles/tileset.json' }, { url: '/gis/tiles/does-not-exist.json' }],
                },
            })
            await tilesPage.goto(ENTRY_URL, { waitUntil: 'networkidle2', timeout: 60000 })
            await tilesPage.waitForSelector('.cockpit-shell', { timeout: 20000 })
            await tilesPage
                .waitForFunction(
                    () => document.querySelector('.cockpit-shell__map .map-canvas')?.dataset.mapTilesets !== 'none',
                    { timeout: 30000 },
                )
                .catch(() => {})
            const tiles = await tilesPage.evaluate(() => {
                const host = document.querySelector('.cockpit-shell__map .map-canvas')
                return {
                    engine: (host && host.dataset.mapEngine) || '',
                    tilesets: (host && host.dataset.mapTilesets) || '',
                    pill: host?.querySelector('[data-map-engine-status]')?.textContent?.trim() || '',
                    stats: window.__cockpitMap ? window.__cockpitMap.getLifecycleStats() : null,
                }
            })
            check(
                'A6-tileset-loads-and-reports',
                '3D Tiles 入口可用：合法 tileset 挂上（stats.tilesets==1），同批里坏的 URL 单独记失败且不影响引擎',
                tiles.engine === 'ready' &&
                    tiles.tilesets === 'invalid' &&
                    tiles.stats?.tilesets === 1 &&
                    (tiles.stats?.tilesetErrors || []).length === 1 &&
                    tiles.pill.includes('3D Tiles 1 个') &&
                    tiles.pill.includes('3D Tiles 加载失败'),
                JSON.stringify({ ...tiles, stats: tiles.stats && { tilesets: tiles.stats.tilesets, errors: tiles.stats.tilesetErrors?.length } }),
            )
        } finally {
            await tilesPage.close()
        }
    }
} finally {
    await browser.close()
}

const failed = results.filter((r) => !r.pass)
console.log('')
console.log(`T21 走查：${results.length - failed.length}/${results.length} 项通过。`)
if (failed.length) {
    console.log('未通过：' + failed.map((f) => f.id).join(', '))
    process.exit(1)
}
console.log('T21 走查全部通过。')