/**
 * 票 44 变异闸：把守卫要防的错法逐一注入，确认 t44 真的转红；每次变异后按字节还原并校验哈希。
 *
 * 判据只看退出码（不用管道捕获子进程输出——那是本环境的已知边界）。
 * 用法：node .scratch/cockpit-real-data-wayfinding/verify/t44-mutations.mjs
 * 先单独跑一次 t44 看绿，再跑本脚本看每条变异都被抓住。
 */
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/t44-distribution-ranking.mjs'

const MUTATIONS = [
    {
        id: 'M1',
        file: 'src/modules/cockpit/domain/panelBlocks.js',
        from: '        .sort((a, b) => b.count - a.count || a.index - b.index)',
        to: '        .sort((a, b) => a.index - b.index)',
        why: '排序改恒等（遗漏降序）→ RANK 组必须全红',
    },
    {
        id: 'M2',
        file: 'src/modules/cockpit/domain/abnormalCounts.js',
        from: '    }))',
        to: '    })).sort((a, b) => b.count - a.count)',
        why: '把固定语义序的异常桶强行降序（非目标第 2 条）→ FIXED 组必须红',
    },
    {
        id: 'M3',
        file: 'src/modules/cockpit/components/PanelBlocks.vue',
        from: '    gap: calc(4 * var(--u, 1px));\n}\n\n.panel-bar__label {',
        to: '    gap: var(--space-2, 8px);\n}\n\n.panel-bar__label {',
        why: '文字与统计条退回宽间距（收紧被撤销）→ B3 必须红',
    },
    {
        id: 'M4',
        file: 'src/modules/cockpit/components/PanelBlocks.vue',
        from: '    box-shadow: inset -1px 0 0 rgba(255, 255, 255, 0.85);\n',
        to: '',
        why: '删掉条段端帽（分割消失）→ B4b 必须红',
    },
    {
        id: 'M5',
        file: 'src/modules/cockpit/components/PanelBlocks.vue',
        from: '    box-shadow: inset 0 0 0 1px rgba(1, 171, 234, 0.12);\n',
        to: '',
        why: '删掉轨道发丝边（条段无容器边界）→ B4 必须红',
    },
    {
        id: 'M6',
        file: 'src/modules/cockpit/components/PanelBlocks.vue',
        from: '                        <EllipsisText class="panel-bar__label" :text="row.label" />',
        to: '                        <span class="panel-bar__label">{{ row.label }}</span>',
        why: '行标签退回裸 span（票 37 省略接缝被视觉改动带走）→ B7 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：PowerShell 写盘是 CRLF，锚点含 \n 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  ${m.id}: 变异锚点未命中（源码已变，需更新脚本）`)
        failures += 1
        continue
    }
    writeFileSync(path, source.replace(needle, normalizeFor(m.to, path)))
    const status = spawnSync(process.execPath, [GATE], { cwd: ROOT, stdio: 'ignore' }).status
    writeFileSync(path, source)
    const restored = hash(path) === before
    const red = status !== 0
    console.log(`${red && restored ? 'OK  ' : 'BAD '} ${m.id} ${m.why} → 闸门${red ? '转红' : '未转红'}；还原${restored ? '按字节一致' : '**不一致**'}`)
    if (!red || !restored) failures += 1
}

console.log('')
console.log(failures ? `T44 MUTATIONS: ${failures} FAILED` : `T44 MUTATIONS: ${MUTATIONS.length}/${MUTATIONS.length} 全部被抓住`)
process.exit(failures ? 1 : 0)