/**
 * 票 56 变异闸（第二/三轮）：把本票要防的错法逐一注入，确认 t56 真的一致红；
 * 每条变异后按字节还原并校验哈希。判据只看退出码（不管道捕获子进程输出，票 37 的沙箱教训）。
 *
 *   node .scratch/cockpit-real-data-wayfinding/verify/t56-mutations.mjs
 */
import { spawnSync } from 'node:child_process'
import { readFileSync, writeFileSync } from 'node:fs'
import { createHash } from 'node:crypto'
import { fileURLToPath } from 'node:url'

const ROOT = fileURLToPath(new URL('../../../', import.meta.url))
const GATE = '.scratch/cockpit-real-data-wayfinding/verify/t56-panel-summary-disclosure.mjs'
const RENDERER = 'src/modules/cockpit/components/PanelBlocks.vue'
const OVERVIEW = 'src/modules/cockpit/domain/overviewPanels.js'

const MUTATIONS = [
    {
        id: 'M1',
        file: RENDERER,
        from: 'data-panel-summary-toggle',
        to: 'data-panel-summary-toggle @mouseenter="summaryOpen = true"',
        why: 'hover 自动展开被复活（第二轮维护者明令撤销）→ A3 必须红',
    },
    {
        id: 'M2',
        file: RENDERER,
        from: "    { key: 'locate', field: 'locateNote', hook: 'data-locate-note' },\n",
        to: '',
        why: '摘要条目被漏掉一条（locateNote 从折叠清单消失＝说明丢失）→ B 组必须红',
    },
    {
        id: 'M3',
        file: RENDERER,
        from: '<span v-show="summaryOpen"',
        to: '<span v-if="summaryOpen"',
        why: '折叠改成 v-if（DOM 里读不到文本，走查脚本与读屏都拿不到原话）→ E 组必须红',
    },
    {
        id: 'M4',
        file: RENDERER,
        from: 'const summaryOpen = ref(false)',
        to: 'const summaryOpen = ref(true)',
        why: '默认展开（顶部照样占高，验收第 1 条落空）→ A1 必须红',
    },
    {
        id: 'M5',
        file: RENDERER,
        from: ':aria-expanded="summaryOpen"',
        to: ':aria-expanded="true"',
        why: '可访问状态写死（读屏永远报"已展开"，与屏上不一致）→ A4 必须红',
    },
    {
        id: 'M6',
        file: RENDERER,
        from: '        <!-- 还没取过数：说"正在取数"',
        to: '        <p v-if="view.gap" class="panel-blocks__gap" data-panel-gap>{{ view.gap }}</p>\n        <!-- 还没取过数：说"正在取数"',
        why: 'gap 又在折叠入口之外裸渲染一份（同一句话画两遍、折叠形同虚设）→ E24 必须红',
    },
    {
        id: 'M7',
        file: RENDERER,
        from: "    { key: 'note', field: 'note', hook: 'data-panel-note' },\n",
        to: '',
        why: '撤下第三轮补的 note 条目（预警设置两族口径说明又变隐形）→ A17 + C18 双向普查必须红',
    },
    {
        id: 'M8',
        file: OVERVIEW,
        from: '        gap: MONITORING_FAULT_GAP,',
        to: '        gapNotShown: MONITORING_FAULT_GAP,',
        why: '故障口径改挂到表外字段名（值仍在 domain、渲染层拿不到＝说明丢失）→ C 组漏网判红 + D 组行为判红',
    },
    {
        id: 'M9',
        file: OVERVIEW,
        from: '        gap: MONITORING_FAULT_GAP,',
        to: "        gap: MONITORING_FAULT_GAP,\n        futureNote: '新加的口径说明',",
        why: 'domain 新增视图级说明字段而不进折叠表（这正是"靠人记得去查"会漏的场景）→ C 组双向普查必须红',
    },
]

const hash = (path) => createHash('sha256').update(readFileSync(path)).digest('hex')

/** 变异源文本按 CRLF 归一后再注入（票 37 的教训：锚点含 \n 而源文件是 CRLF 会假未命中）。 */
const normalizeFor = (text, path) => (readFileSync(path, 'utf8').includes('\r\n') ? text.replace(/\n/g, '\r\n') : text)

let failures = 0
for (const m of MUTATIONS) {
    const path = ROOT + m.file.replaceAll('/', process.platform === 'win32' ? '\\' : '/')
    const before = hash(path)
    const source = readFileSync(path, 'utf8')
    const needle = normalizeFor(m.from, path)
    if (!source.includes(needle)) {
        console.log(`BAD  ${m.id}: 变异锚点未命中（源码已变，需更新脚本）`)
        failures += 1
        continue
    }
    writeFileSync(path, source.replace(needle, normalizeFor(m.to, path)))
    const caught = spawnSync(process.execPath, [GATE], { cwd: ROOT, stdio: 'ignore' }).status !== 0
    writeFileSync(path, source)
    const restored = hash(path) === before
    if (!caught) {
        console.log(`MISS ${m.id}: 注入后闸门仍全绿 → 守卫没有牙（${m.why}）`)
        failures += 1
    } else if (!restored) {
        console.log(`BAD  ${m.id}: 还原后哈希不一致，文件状态可疑，立刻人工核对`)
        failures += 1
    } else {
        console.log(`OK   ${m.id} ${m.why} → 闸门转红；还原按字节一致`)
    }
}

console.log(`\nT56 MUTATIONS: ${MUTATIONS.length - failures}/${MUTATIONS.length} 全部被抓住`)
process.exitCode = failures ? 1 : 0