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// generationNo 来自 int64。当前页面必须做加法与排序，因此只接受 JavaScript
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// 可以精确表达的正安全整数；超出范围时失败关闭，不能把两个世代舍入成同一值。
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export const MAX_GENERATION_NO = Number.MAX_SAFE_INTEGER
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// 三个限制逐一对应 GenerationPoemBatchBody：输入总长 26000、单代文字
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// 最多 50 字符、单批最多 500 个世代，不能再合并成一个含义模糊的“长度”。
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export const MAX_GENERATION_COUNT = 500
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export const MAX_GENERATION_TEXT_LENGTH = 50
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export const MAX_GENERATION_POEM_INPUT_LENGTH = 26000
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export const GENERATION_POEM_STATUS = Object.freeze({
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ACTIVE: '0',
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DISABLED: '1',
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})
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const normalizePositiveInteger = (value) => {
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if (typeof value === 'number') {
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return Number.isSafeInteger(value) && value > 0 ? value : null
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}
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if (typeof value !== 'string' || !/^[1-9]\d*$/.test(value)) return null
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const number = Number(value)
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return Number.isSafeInteger(number) ? number : null
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}
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// 路由查询始终先经过这里：缺省值可以回落，显式传入的非法值必须失败关闭，
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// 不能用 Number(...) || fallback 把 0、小数或科学计数法悄悄改成另一代。
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export const normalizeGenerationNumber = (value, fallback) => {
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const candidate = value === undefined || value === null || value === ''
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? fallback
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: value
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const number = normalizePositiveInteger(candidate)
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return number !== null && number <= MAX_GENERATION_NO ? number : null
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}
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const separatorPattern = /[\s,，;；、/|]/u
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const separatorRunPattern = /[\s,，;；、/|]+/u
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const forbiddenControlPattern = /[\u0000-\u0008\u000B\u000C\u000E-\u001F\u007F]/u
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const codePointLength = (value) => Array.from(value).length
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const normalizeGenerationText = (value) => {
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const text = String(value ?? '').trim()
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if (
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!text ||
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codePointLength(text) > MAX_GENERATION_TEXT_LENGTH ||
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forbiddenControlPattern.test(text)
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) {
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return null
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}
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return text
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}
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// 按 OpenAPI 的批量输入规则解析：没有分隔符时每个 Unicode code point 对应
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// 一代；存在空格、逗号、分号、顿号、斜杠或竖线时，每个分段可包含多字。
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export const validateGenerationPoemText = (value) => {
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const input = String(value ?? '')
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if (!input.trim()) {
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return Object.freeze({ valid: false, generations: [], message: '请录入字辈内容' })
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}
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if (codePointLength(input) > MAX_GENERATION_POEM_INPUT_LENGTH) {
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return Object.freeze({
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valid: false,
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generations: [],
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message: `字辈输入最多 ${MAX_GENERATION_POEM_INPUT_LENGTH} 个字符`,
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})
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}
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if (forbiddenControlPattern.test(input)) {
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return Object.freeze({
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valid: false,
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generations: [],
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message: '字辈内容包含不支持的控制字符',
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})
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}
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const generations = separatorPattern.test(input)
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? input.split(separatorRunPattern).map((item) => item.trim()).filter(Boolean)
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: Array.from(input)
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if (!generations.length) {
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return Object.freeze({ valid: false, generations, message: '请录入字辈内容' })
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}
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if (generations.length > MAX_GENERATION_COUNT) {
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return Object.freeze({
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valid: false,
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generations,
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message: `一次最多录入 ${MAX_GENERATION_COUNT} 个世代`,
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})
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}
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if (generations.some((item) => normalizeGenerationText(item) === null)) {
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return Object.freeze({
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valid: false,
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generations,
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message: `每代字辈文字不能为空且最多 ${MAX_GENERATION_TEXT_LENGTH} 个字符`,
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})
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}
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return Object.freeze({ valid: true, generations, message: '' })
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}
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const normalizeExistingRow = (row) => {
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const generationNo = normalizeGenerationNumber(row?.generationNo)
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const generationText = normalizeGenerationText(row?.generationText)
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if (
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generationNo === null ||
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generationText === null ||
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!Object.values(GENERATION_POEM_STATUS).includes(row?.status)
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) {
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throw new TypeError('已有字辈记录不符合 GenerationPoemView 合同')
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}
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return {
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...row,
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generationNo,
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generationText,
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status: row.status,
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current: false,
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}
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}
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// 只检查已建立字辈的起点到本批起始代之间，避免把家谱尚未录入的更早世代
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// 当成缺口；算法只遍历已有记录，能够安全处理几十代、几百代甚至稀疏数据。
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export const findFirstGenerationGap = (
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rows,
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startGeneration,
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sequenceStartGeneration,
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) => {
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const start = normalizeGenerationNumber(startGeneration)
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if (start === null) return null
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const generations = [...new Set(
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(Array.isArray(rows) ? rows : [])
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.filter((row) => row?.status !== GENERATION_POEM_STATUS.DISABLED)
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.map((row) => normalizeGenerationNumber(row?.generationNo))
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.filter((generationNo) => generationNo !== null && generationNo < start),
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)].sort((left, right) => left - right)
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if (!generations.length) return null
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const explicitSequenceStart = sequenceStartGeneration === undefined
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? null
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: normalizeGenerationNumber(sequenceStartGeneration)
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if (sequenceStartGeneration !== undefined && explicitSequenceStart === null) {
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throw new TypeError('字辈序列起点无效')
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}
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let expected = explicitSequenceStart ?? generations[0]
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for (const generationNo of generations) {
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if (generationNo > expected) return expected
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expected = generationNo + 1
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}
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return expected < start ? expected : null
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}
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// 批量维护只替换本次覆盖区间。disableMissing=true 时，后续遗漏记录会被
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// 标成停用但仍保留，确保历史数据不会因一次编辑被物理删除。
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export const mergeGenerationPoemRows = ({
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existingRows,
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generationTexts,
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startGeneration,
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currentGeneration,
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disableMissing,
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}) => {
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const start = normalizeGenerationNumber(startGeneration)
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const current = normalizeGenerationNumber(currentGeneration)
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if (typeof disableMissing !== 'boolean') {
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throw new TypeError('disableMissing 必须是布尔值')
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}
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if (!Array.isArray(generationTexts) || !generationTexts.length) {
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throw new TypeError('字辈合并参数无效')
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}
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if (generationTexts.length > MAX_GENERATION_COUNT) {
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throw new RangeError(`一次最多 ${MAX_GENERATION_COUNT} 个世代`)
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}
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const nextGenerationTexts = generationTexts.map(normalizeGenerationText)
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if (nextGenerationTexts.some((item) => item === null)) {
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throw new TypeError('单代字辈文字无效')
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}
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if (start === null || current === null) throw new TypeError('字辈合并参数无效')
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if (start > MAX_GENERATION_NO - nextGenerationTexts.length + 1) {
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throw new RangeError('字辈世代超出支持范围')
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}
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const end = start + nextGenerationTexts.length - 1
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const rowsByGeneration = new Map()
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for (const item of Array.isArray(existingRows) ? existingRows : []) {
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const row = normalizeExistingRow(item)
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if (rowsByGeneration.has(row.generationNo)) {
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throw new TypeError('已有字辈包含重复的世代记录')
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}
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rowsByGeneration.set(row.generationNo, row)
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}
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for (let index = 0; index < nextGenerationTexts.length; index += 1) {
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const generationNo = start + index
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const existing = rowsByGeneration.get(generationNo)
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rowsByGeneration.set(generationNo, {
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...existing,
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generationNo,
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generationText: nextGenerationTexts[index],
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status: GENERATION_POEM_STATUS.ACTIVE,
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current: false,
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})
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}
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if (disableMissing) {
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for (const [generationNo, row] of rowsByGeneration) {
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if (generationNo > end) {
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rowsByGeneration.set(generationNo, {
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...row,
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status: GENERATION_POEM_STATUS.DISABLED,
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current: false,
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})
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}
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}
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}
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return [...rowsByGeneration.values()]
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.sort((left, right) => left.generationNo - right.generationNo)
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.map((row) => ({
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...row,
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current:
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row.status === GENERATION_POEM_STATUS.ACTIVE &&
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row.generationNo === current,
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}))
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}
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