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import { useEffect, useRef, useState, type FormEvent } from "react";
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import { useMutation, useQueryClient } from "@tanstack/react-query";
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import { useAuth } from "../../auth/AuthContext";
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import { recognizeIncomingReceipt, saveLoanFromIncomingReceipt, type IncomingReceiptPrefill, type LoanLender } from "../../api/companyLoans";
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import { resolveErrorMessage } from "../../lib/resolveErrorMessage";
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import { Button } from "../ui/button";
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import { Input } from "../ui/input";
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import { Dialog, DialogContent, DialogDescription, DialogHeader, DialogTitle } from "../ui/dialog";
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const selectClass = "min-h-11 min-w-0 w-full rounded-md border border-zinc-300 bg-white px-3 text-sm";
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const moneyPattern = "[0-9]{1,12}(\\.[0-9]{1,2})?";
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const blockLabels: Record<string, string> = {
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non_final: "回单载明不作为最终依据", transaction_failed: "回单显示交易失败或已撤销", transaction_pending: "回单显示交易仍在处理中",
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multiple_transactions: "文件包含多笔交易或多张回单（金额、流水号或凭证号不一致）", non_cny: "币种不是人民币",
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currency_conflict: "回单中的币种互相矛盾", pages_unverified: "多页文件中有页面无法确认属于同一笔交易，请上传单笔回单",
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};
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const warningLabels: Record<string, string> = {
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text_unavailable: "未能读取 PDF 文字，可能是扫描件", direction_ambiguous: "收付方向无法判断",
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company_not_unique: "收款方名称对应多个公司", lender_not_unique: "付款方名称对应多个出借人",
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payer_account_differs: "付款账号与出借人当前收款账号不同，请核对是否为原借入账户",
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};
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const ocrLabels: Record<IncomingReceiptPrefill["ocr"], string> = {
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not_needed: "已从 PDF 文字读取", used: "已结合银行回单识别补充", unavailable: "银行回单识别未启用，请对照原件填写", failed: "银行回单识别未完成，请对照原件填写",
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};
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type Field = "principal" | "received" | "origin";
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type Values = Record<Field | "opening" | "asOf" | "lender", string>;
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const empty: Values = { principal: "", received: "", origin: "", opening: "", asOf: "", lender: "" };
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// One original file per registration: recognition proposes values, finance checks
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// them against the original, and the same file is saved with the loan in one step.
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export function LoanIncomingReceiptDialog({ lenders, onClose, onManual, onSaved }: {
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lenders: LoanLender[]; onClose: () => void; onManual: () => void; onSaved: () => void;
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}) {
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const { me } = useAuth();
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const cache = useQueryClient();
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const [file, setFile] = useState<File | null>(null);
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const [prefill, setPrefill] = useState<IncomingReceiptPrefill | null>(null);
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const [values, setValues] = useState<Values>(empty);
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const [edited, setEdited] = useState<Set<string>>(new Set());
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const editedRef = useRef(edited); editedRef.current = edited;
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const [historical, setHistorical] = useState(true);
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const [originalChecked, setOriginalChecked] = useState(false);
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const [natureConfirmed, setNatureConfirmed] = useState(false);
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const [requestKey, setRequestKey] = useState(() => crypto.randomUUID());
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// The lender version finance checked is frozen; a refreshed list never
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// silently replaces it. A change clears the checks and asks for a new review.
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const [checkedLender, setCheckedLender] = useState<{ id: string; identityVersion: number; accountVersion: number } | null>(null);
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const [lenderChanged, setLenderChanged] = useState(false);
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const sequence = useRef(0);
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const alive = useRef(true);
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const pending = useRef<AbortController | null>(null);
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const actor = useRef(me?.id); actor.current = me?.id;
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useEffect(() => {
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alive.current = true;
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return () => { alive.current = false; pending.current?.abort(); };
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}, [me?.id]);
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const listed = lenders.find((l) => l.id === values.lender);
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useEffect(() => {
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if (!listed) { setCheckedLender(null); return; }
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if (!checkedLender || checkedLender.id !== listed.id) {
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setCheckedLender({ id: listed.id, identityVersion: listed.identityVersion, accountVersion: listed.accountVersion }); return;
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}
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if (checkedLender.identityVersion !== listed.identityVersion || checkedLender.accountVersion !== listed.accountVersion) {
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setCheckedLender({ id: listed.id, identityVersion: listed.identityVersion, accountVersion: listed.accountVersion });
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setOriginalChecked(false); setNatureConfirmed(false); setLenderChanged(true);
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}
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}, [listed, checkedLender]);
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const current = (seq: number, actorId: string | undefined) => alive.current && sequence.current === seq && actor.current === actorId;
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const recognition = useMutation({ mutationFn: async ({ selected, seq }: { selected: File; seq: number }) => {
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const actorId = me?.id;
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const controller = new AbortController(); pending.current?.abort(); pending.current = controller;
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try {
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const result = await recognizeIncomingReceipt(selected, controller.signal);
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if (!current(seq, actorId)) return;
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setPrefill(result);
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// A late result never overwrites what finance already typed for this file.
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setValues((previous) => {
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const next = { ...previous };
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const fill = (key: keyof Values, value: string | null | undefined) => { if (value && !editedRef.current.has(key)) next[key] = value; };
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fill("principal", result.fields.originalPrincipal); fill("received", result.fields.receivedDate);
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fill("origin", result.fields.originReference);
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if (result.suggestions.lenderId && lenders.some((l) => l.id === result.suggestions.lenderId)) fill("lender", result.suggestions.lenderId);
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return next;
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});
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} finally { if (pending.current === controller) pending.current = null; }
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} });
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const save = useMutation({ mutationFn: async () => {
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const lender = checkedLender;
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if (!file || !prefill || prefill.blocks.length || !lender || lender.id !== values.lender) throw new Error("请先上传可用的原借入回单并完成识别。");
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const actorId = me?.id; const seq = sequence.current;
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const controller = new AbortController(); pending.current = controller;
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try {
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await saveLoanFromIncomingReceipt(file, {
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context: prefill.context, requestKey, lenderId: lender.id, expectedLenderIdentityVersion: lender.identityVersion,
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expectedLenderAccountVersion: lender.accountVersion, originReference: values.origin.trim(),
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originalPrincipal: values.principal.trim(), openingOutstandingPrincipal: values.opening.trim(),
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receivedDate: values.received, balanceAsOf: values.asOf, historicalEntry: historical, originalChecked: true, natureConfirmed: true,
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}, controller.signal);
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if (!current(seq, actorId)) return;
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await Promise.all(["company-loans", "loan-lenders"].map((key) => cache.invalidateQueries({ queryKey: [key, actorId] })));
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if (current(seq, actorId)) onSaved();
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} finally { if (pending.current === controller) pending.current = null; }
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} });
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function choose(selected: File | null) {
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sequence.current += 1;
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pending.current?.abort();
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// A new file starts a new registration: its values, checks and request key reset.
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setFile(selected); setPrefill(null); setValues((previous) => ({ ...empty, opening: previous.opening, asOf: previous.asOf }));
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setEdited(new Set()); setOriginalChecked(false); setNatureConfirmed(false); setRequestKey(crypto.randomUUID());
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recognition.reset(); save.reset();
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if (selected) recognition.mutate({ selected, seq: sequence.current });
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}
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function change(key: keyof Values, value: string) {
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if (key === "lender") { setLenderChanged(false); setOriginalChecked(false); setNatureConfirmed(false); }
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setValues((previous) => ({ ...previous, [key]: value }));
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setEdited((previous) => new Set(previous).add(key));
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}
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function submit(event: FormEvent<HTMLFormElement>) { event.preventDefault(); save.mutate(); }
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const busy = recognition.isPending || save.isPending;
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const blocked = Boolean(prefill?.blocks.length);
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const lenderChoice = lenders.find((l) => l.id === values.lender);
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const issue = (key: string) => prefill?.fieldIssues[key];
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const hint = (key: string, field: Field) => {
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if (!prefill) return null;
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if (issue(key) === "ambiguous") return "原件中存在多个不同值，未预填，请对照原件填写";
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if (issue(key) === "missing") return "未识别，请对照原件填写";
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if (issue(key) === "invalid") return "原件中的值格式无法确认，未预填，请对照原件填写";
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if (edited.has(field)) return "已人工修改";
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return prefill.sources[key] === "ocr" ? "来自银行回单识别，请核对" : "来自 PDF 文字，请核对";
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};
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const error = save.error ?? recognition.error;
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return <Dialog open onOpenChange={(open) => { if (!open && !busy) onClose(); }}>
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<DialogContent className="max-h-[90dvh] overflow-y-auto"><DialogHeader>
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<DialogTitle>上传回单登记借入</DialogTitle>
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<DialogDescription>上传一份原借入银行回单 PDF，系统预填金额、到账日期和凭据号，请对照原件核对。保存后借款为“余额待核实”，原件自动归入该笔借款材料。</DialogDescription>
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</DialogHeader>
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<form onSubmit={submit} className="grid gap-4">
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<fieldset disabled={save.isPending} className="grid min-w-0 gap-4">
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<label className="grid gap-1.5 text-sm">原借入回单（PDF，单笔交易）
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<Input type="file" accept=".pdf,application/pdf" aria-label="原借入回单" onChange={(event) => choose(event.currentTarget.files?.[0] ?? null)} />
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</label>
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{recognition.isPending ? <p role="status" className="text-sm">正在识别回单…</p> : null}
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{error ? <p role="alert" className="text-sm text-red-700">{resolveErrorMessage(error)}</p> : null}
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{prefill ? <div className="grid gap-2 rounded border p-3 text-sm" aria-label="回单识别结果">
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<p>{ocrLabels[prefill.ocr]}。识别结果不是银行验真，须以原件为准。</p>
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{blocked ? <p role="alert" className="text-red-700">该文件不能作为原借入回单：{prefill.blocks.map((b) => blockLabels[b] ?? "回单存在限制").join("；")}。请更换正式入账回单，或改用手工登记。</p> : null}
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{prefill.warnings.length ? <p className="text-amber-800">{prefill.warnings.map((w) => warningLabels[w] ?? "请人工核对").join("；")}。</p> : null}
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<dl className="grid gap-1">
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<div><dt className="inline text-zinc-600">付款方：</dt><dd className="inline break-words">{prefill.fields.payerName ?? "未识别"} {prefill.fields.payerAccountMasked ?? ""}</dd></div>
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<div><dt className="inline text-zinc-600">收款方：</dt><dd className="inline break-words">{prefill.fields.payeeName ?? "未识别"} {prefill.fields.payeeAccountMasked ?? ""}</dd></div>
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<div><dt className="inline text-zinc-600">收付方向：</dt><dd className="inline">{prefill.direction === "credit" ? "入账（贷方）" : prefill.direction === "debit" ? "付款（借方），请核对付款方是否为出借人" : "未识别"}</dd></div>
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</dl>
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</div> : null}
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{prefill && !blocked ? <>
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<label className="grid gap-1.5 text-sm">出借人<select aria-label="出借人" required className={selectClass} value={values.lender} onChange={(e) => change("lender", e.target.value)}>
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<option value="">请选择已登记出借人</option>{lenders.map((l) => <option key={l.id} value={l.id}>{l.name} · {l.legalEntityName}</option>)}
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</select></label>
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{lenderChanged ? <p role="alert" className="text-sm text-amber-800">所选出借人的资料已更新，请重新核对后再勾选确认。</p> : null}
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{!values.lender ? <p className="text-sm text-zinc-600">没有对应出借人时，请先用“登记出借人”从员工选择或登记，再回来上传。</p> : null}
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{lenderChoice && prefill.fields.payeeName && prefill.fields.payeeName !== lenderChoice.legalEntityName
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? <p role="alert" className="text-sm text-amber-800">回单收款方与所选出借人的借款公司不一致，保存时将被拒绝。</p> : null}
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{([["principal", "amount", "原始本金", "decimal"], ["received", "receivedDate", "实际到账日期", "date"], ["origin", "reference", "原借入凭据唯一引用", "text"]] as const)
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.map(([field, key, label, kind]) => <label key={field} className="grid gap-1.5 text-sm">{label}
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<Input required aria-label={label} value={values[field]} onChange={(e) => change(field, e.target.value)}
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{...(kind === "date" ? { type: "date" } : kind === "decimal" ? { inputMode: "decimal" as const, pattern: moneyPattern } : { maxLength: 200 })} />
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<span className="text-xs text-zinc-600">{hint(key, field)}{field === "origin" && prefill.fields.referenceKind ? `（${prefill.fields.referenceKind === "serial" ? "流水号" : "凭证号"}）` : ""}</span>
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</label>)}
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<label className="grid gap-1.5 text-sm">核对日未还本金<Input required aria-label="核对日未还本金" inputMode="decimal" pattern={moneyPattern} value={values.opening} onChange={(e) => change("opening", e.target.value)} />
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<span className="text-xs text-zinc-600">回单不能证明未还本金，请按代账核对结果填写。</span></label>
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<label className="grid gap-1.5 text-sm">余额核对截止日<Input required aria-label="余额核对截止日" type="date" value={values.asOf} onChange={(e) => change("asOf", e.target.value)} /></label>
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<label className="grid gap-1.5 text-sm">登记性质<select aria-label="登记性质" className={selectClass} value={historical ? "historical" : "current"} onChange={(e) => setHistorical(e.target.value === "historical")}>
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<option value="historical">历史借入登记</option><option value="current">当期实际借入</option></select></label>
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<label className="flex min-h-11 items-start gap-2 text-sm"><input type="checkbox" className="mt-1" required checked={originalChecked} onChange={(e) => { setOriginalChecked(e.target.checked); setLenderChanged(false); }} />
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<span>已查看完整原件，金额、日期和凭据号与原件一致</span></label>
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<label className="flex min-h-11 items-start gap-2 text-sm"><input type="checkbox" className="mt-1" required checked={natureConfirmed} onChange={(e) => setNatureConfirmed(e.target.checked)} />
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<span>已核对这笔入账是向该出借人的借款，且收款主体为所选公司</span></label>
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</> : null}
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<Button type="submit" disabled={!prefill || blocked || busy || !originalChecked || !natureConfirmed}>{save.isPending ? "保存中…" : "保存借款及原件"}</Button>
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<Button type="button" variant="outline" disabled={save.isPending} onClick={onManual}>不上传回单，手工登记</Button>
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</fieldset>
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</form>
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</DialogContent>
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</Dialog>;
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}
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Claude Opus 5.5