/**
 * 票 71 变异闸：证明契约测试对「未转工单的报警 > 工单处置 > 预警」这条序**有牙**。
 *
 * 每条变异：按字节把源码改成规则失效的形态 → 跑 CockpitMonitoringPointStatusOrderTest →
 * 必须转红 → 再按字节还原。全部转红、还原后复绿，闸门才算通过。
 *
 * 沿用票 52 变异闸的两条教训：
 *  1. 必须 '-pl zksy-admin -am' 走 reactor 重新编译，否则 zksy-system 从本地仓库 jar 解析，源码变异进不了测试；
 *  2. Windows 上 mvn 是 mvn.cmd，显式给路径；「构建没跑到测试」不能算打红。
 *
 * 用法：node .scratch/cockpit-real-data-wayfinding/verify/t71-mutations.mjs
 */
import { execSync } from 'node:child_process'
import { readFileSync, writeFileSync } from 'node:fs'

const BACKEND = 'E:/pipe-ner-server'
const MODULE = 'pipe-network-service'
const TEST = 'CockpitMonitoringPointStatusOrderTest'
const MVN = 'D:/Maven/apache-maven-3.9.15/bin/mvn.cmd'

const RESOLVER = `${BACKEND}/${MODULE}/zksy-system/src/main/java/com/zksy/cockpit/point/CockpitMonitoringPointStatusResolver.java`
const ENUM = `${BACKEND}/${MODULE}/zksy-system/src/main/java/com/zksy/cockpit/point/CockpitMonitoringPointStatus.java`

const read = (p) => readFileSync(p, 'utf8')
const write = (p, s) => writeFileSync(p, s)
const toLf = (s) => s.replace(/\r\n/g, '\n')

const ORDER_BLOCK = `        // 「未转工单的报警」已在上面拦截；剩下的「有未结束工单」压过「有未解决预警」。
        if (device.isWorkOrderInProgress()) {
            return CockpitMonitoringPointStatus.WORK_ORDER;
        }
        if (device.isWarning()) {
            return CockpitMonitoringPointStatus.WARNING;
        }`

const mutations = [
    {
        id: 'M1',
        name: '退回原序：预警重新压过工单（两个分支换回）',
        file: RESOLVER,
        from: ORDER_BLOCK,
        to: `        if (device.isWarning()) {
            return CockpitMonitoringPointStatus.WARNING;
        }
        if (device.isWorkOrderInProgress()) {
            return CockpitMonitoringPointStatus.WORK_ORDER;
        }`,
    },
    {
        id: 'M2',
        name: '报警分支忽略承接事实（全部报警恒判 ALARM）',
        file: RESOLVER,
        from: `            return device.isAlarmsCoveredByOpenWorkOrders()
                    ? CockpitMonitoringPointStatus.WORK_ORDER
                    : CockpitMonitoringPointStatus.ALARM;`,
        to: `            return CockpitMonitoringPointStatus.ALARM;`,
    },
    {
        id: 'M3',
        name: '删掉非报警分支的工单判断（工单不再压预警）',
        file: RESOLVER,
        from: `        if (device.isWorkOrderInProgress()) {
            return CockpitMonitoringPointStatus.WORK_ORDER;
        }
        if (device.isWarning()) {`,
        to: `        if (device.isWarning()) {`,
    },
    {
        id: 'M4',
        name: '偷偷改枚举优先级（Q2 被破坏：WORK_ORDER 提到 WARNING 之前）',
        file: ENUM,
        from: `    WARNING(2, "预警"),
    WORK_ORDER(3, "工单处置"),`,
        to: `    WARNING(3, "预警"),
    WORK_ORDER(2, "工单处置"),`,
    },
]

/** 跑一次测试；返回 { ran, green } —— ran=false 表示构建没跑到测试（不能算证据）。 */
const runTest = () => {
    let out = ''
    try {
        out = execSync(
            `"${MVN}" -o -pl zksy-admin -am test -Dtest=${TEST} -DfailIfNoTests=false`,
            { cwd: `${BACKEND}/${MODULE}`, encoding: 'utf8', stdio: ['ignore', 'pipe', 'pipe'] })
    } catch (error) {
        out = `${error.stdout ?? ''}${error.stderr ?? ''}`
    }
    const summary = out.match(/Tests run: (\d+), Failures: (\d+), Errors: (\d+)/g)
    if (!summary || summary.length === 0) {
        return { ran: false, green: false, out }
    }
    const last = summary[summary.length - 1]
    const [, total, failures, errors] = last.match(/Tests run: (\d+), Failures: (\d+), Errors: (\d+)/)
    return { ran: true, green: Number(failures) === 0 && Number(errors) === 0 && Number(total) > 0, out }
}

const baseline = runTest()
if (!baseline.ran || !baseline.green) {
    console.log('基线不绿，闸门无法判定：先修好源码/测试再跑变异。')
    process.exit(1)
}
console.log('基线绿（未变异时测试全过），开始变异…\n')

let red = 0
let broken = 0
const originals = new Map()

for (const m of mutations) {
    if (!originals.has(m.file)) originals.set(m.file, read(m.file))
    const original = originals.get(m.file)
    const crlf = original.includes('\r\n')
    const norm = toLf(original)
    if (!norm.includes(m.from)) {
        console.log(`SKIP ${m.id} — anchor 未命中（源码已变，需同步变异脚本）：${m.name}`)
        broken += 1
        continue
    }
    write(m.file, crlf ? norm.replace(m.from, m.to).replace(/\n/g, '\r\n') : norm.replace(m.from, m.to))

    const result = runTest()
    if (!result.ran) {
        console.log(`FAIL ${m.id} — 构建没跑到测试，不能算打红：${m.name}`)
        broken += 1
    } else if (!result.green) {
        red += 1
        console.log(`PASS ${m.id} — 变异被打红：${m.name}`)
    } else {
        console.log(`FAIL ${m.id} — 变异未被抓住（测试无牙）：${m.name}`)
    }

    write(m.file, original)
    if (read(m.file) !== original) {
        console.log(`FAIL ${m.id} — 还原后字节不一致`)
        broken += 1
    }
}

const final = runTest()
console.log(`\n变异打红 ${red}/${mutations.length}；还原后复绿：${final.green ? '是' : '否'}；异常 ${broken}`)
process.exit(red === mutations.length && final.green && broken === 0 ? 0 : 1)