/**
 * 从上游 dashboard 页面正文提取「官网业务拒价/阻断」文案，供前端如实展示。
 * 非 RPA/系统错误，而是承运商或官网规则导致无法出价。
 * 对外统一译为中文，避免英文原文与上游品牌直出给客户。
 */

import { scrubProviderBrandForCustomer } from "@/lib/frontend/scrub-provider-brand";

const ACCESSORIAL_BLOCK_PATTERNS: RegExp[] = [
  /不支持附加服务[^\n。]{0,160}/,
  /(?:承运|运输)合作伙伴[^\n。]{0,80}不提供[^\n。]{0,120}/,
  /住宅地址[^\n。]{0,80}上门取件[^\n。]{0,80}/,
  /unsupported accessorial[^\n.]{0,200}/i,
  /accessorial(?:s)?[^\n.]{0,120}(?:not supported|not available|cannot be)/i,
  /our carrier partners? do not provide[^\n.]{0,220}/i,
  /carrier partners? (?:don'?t|do not) provide[^\n.]{0,220}/i,
  /(?:pickup|pick-up)[^\n.]{0,80}residential[^\n.]{0,120}/i,
  /residential[^\n.]{0,80}(?:pickup|pick-up)[^\n.]{0,120}/i,
];

/** 线路/地址/运力等官网业务阻断（底部红色提示常见） */
const LANE_ADDRESS_BLOCK_PATTERNS: RegExp[] = [
  /该线路[^\n。]{0,120}/,
  /无法[^\n。]{0,40}报价[^\n。]{0,80}/,
  /暂无[^\n。]{0,40}运力[^\n。]{0,80}/,
  /地址[^\n。]{0,40}(?:错误|无效|无法|不支持)[^\n。]{0,80}/,
  /不在[^\n。]{0,40}服务[^\n。]{0,40}范围[^\n。]{0,40}/,
  /please enter the address of your (?:pick-?up|delivery) location[^\n.]{0,80}/i,
  /(?:invalid|incorrect|unsupported)\s+address[^\n.]{0,120}/i,
  /address[^\n.]{0,80}(?:not supported|not found|could not be|is invalid)[^\n.]{0,120}/i,
  // 官网红色 toast：Unfortunately we were unable to find any rates for this lane...
  /unable to find any rates for this lane[^\n.]{0,200}/i,
  /unfortunately we were unable to find any rates[^\n.]{0,220}/i,
  /(?:we )?(?:could|can) ?not (?:find|get|obtain)[^\n.]{0,40}(?:quote|rates?)[^\n.]{0,120}/i,
  /unable to (?:get|find|obtain|provide)[^\n.]{0,40}(?:quote|rates?)[^\n.]{0,120}/i,
  /no carriers? (?:available|found|able)[^\n.]{0,120}/i,
  /(?:this )?lane[^\n.]{0,80}(?:not supported|unavailable|not available)[^\n.]{0,120}/i,
  /outside (?:of )?(?:our )?service (?:area|region)[^\n.]{0,120}/i,
  /temporarily unable to (?:obtain|get|fetch) quotes?[^\n.]{0,80}/i,
  /carriers? (?:are )?(?:unable|not able) to[^\n.]{0,160}/i,
];

/** 官网英文阻断 → 中文（客户可见） */
const PORTAL_EN_TO_ZH: Array<[RegExp, string]> = [
  [
    /unable to find any rates for this lane|unfortunately we were unable to find any rates/i,
    "该线路与货物组合暂无可用报价，请检查货物信息后重试或联系客服",
  ],
  [
    /no rates found[\s\S]*please review all required fields to proceed/i,
    "未找到可用报价。请检查并填写所有必填项后再继续",
  ],
  [/no rates found/i, "未找到可用报价"],
  [
    /please review all required fields to proceed/i,
    "请检查并填写所有必填项后再继续",
  ],
  [/unsupported accessorial/i, "不支持该附加服务"],
  [
    /our carrier partners? do not provide[^\n.]*/i,
    "承运合作伙伴不提供此项服务",
  ],
  [
    /carrier partners? (?:don'?t|do not) provide[^\n.]*/i,
    "承运合作伙伴不提供此项服务",
  ],
  [
    /(?:pickup|pick-up)[^\n.]{0,80}residential|residential[^\n.]{0,80}(?:pickup|pick-up)/i,
    "不支持住宅地址上门取件",
  ],
  [/accessorial(?:s)?[^\n.]{0,80}(?:not supported|not available)/i, "不支持该附加服务"],
  [
    /please enter the address of your pick-?up location/i,
    "请填写并确认提货地址",
  ],
  [
    /please enter the address of your delivery location/i,
    "请填写并确认派送地址",
  ],
  [/invalid address|address is invalid/i, "地址无效，请重新选择"],
  [
    /address[^\n.]{0,40}(?:not supported|not found)/i,
    "该地址不受支持或无法识别，请重新选择",
  ],
  [
    /unable to (?:get|find|obtain|provide)[^\n.]{0,40}(?:quote|rates?)|could not (?:find|get)[^\n.]{0,40}(?:quote|rates?)/i,
    "官网无法为该线路提供报价",
  ],
  [/no carriers? (?:available|found)/i, "暂无可用承运商"],
  [
    /(?:this )?lane[^\n.]{0,40}(?:not supported|unavailable|not available)/i,
    "该线路暂不支持报价",
  ],
  [
    /outside (?:of )?(?:our )?service (?:area|region)/i,
    "该地址不在服务范围内",
  ],
  [
    /temporarily unable to (?:obtain|get|fetch) quotes?/i,
    "暂时无法获取报价，请稍后重试",
  ],
  [
    /carriers? (?:are )?(?:unable|not able) to/i,
    "承运商无法承运该票货物",
  ],
  [
    /freight ready time is before pickup location operation hours/i,
    "货运就绪时刻不能早于提货点开门时间，请调整就绪时刻或开门时间",
  ],
  [
    /ready time is before.{0,40}operation hours/i,
    "货运就绪时刻不能早于提货点开门时间，请调整就绪时刻或开门时间",
  ],
];

function normalizePortalLine(line: string, keepNewlines = false): string {
  if (keepNewlines) {
    return line
      .replace(/\r/g, "")
      .replace(/[ \t]+/g, " ")
      .replace(/\n+/g, "\n")
      .trim();
  }
  return line.replace(/\s+/g, " ").trim();
}

/** 将单条官网提示译为中文；已是中文则原样返回 */
export function translatePortalMessageToZh(message: string): string {
  const trimmed = message.trim();
  if (!trimmed) return trimmed;
  if (/[\u4e00-\u9fff]/.test(trimmed)) {
    return trimmed;
  }
  for (const [pattern, zh] of PORTAL_EN_TO_ZH) {
    if (pattern.test(trimmed)) {
      return zh;
    }
  }
  // 未知英文：仍回传内容，加前缀避免客户只看到笼统失败
  const brief = trimmed.replace(/\s+/g, " ").slice(0, 220);
  return `承运商提示：${brief}`;
}

function pushMatch(
  found: string[],
  msg: string,
  keepNewlines = false,
): void {
  const n = normalizePortalLine(msg, keepNewlines);
  if (n && !found.includes(n)) found.push(n);
}

function extractByPatterns(text: string, patterns: RegExp[]): string[] {
  const found: string[] = [];
  for (const p of patterns) {
    const m = text.match(p);
    if (m?.[0]) pushMatch(found, m[0]);
  }
  return found;
}

/** 提取页面可见的官网阻断/无价提示（去重、保序） */
export function extractMothershipPortalQuoteMessages(body: string): string[] {
  const text = body.replace(/\r/g, "");
  const found: string[] = [];

  // 优先抓红色 toast：lane/freight 无价（比「必填项」更准确）
  const laneToast = text.match(
    /Unfortunately we were unable to find any rates for this lane[^\n.]{0,220}\.?/i,
  );
  if (laneToast?.[0]) {
    pushMatch(found, laneToast[0]);
  }

  const hasNoRates = /No rates found/i.test(text);
  const hasRequired =
    /Please review all required fields to proceed/i.test(text);
  // 已有「线路无价」硬拒时，不再附带 required fields（避免误导用户去补二级详情）
  if (!laneToast?.[0]) {
    if (hasNoRates && hasRequired) {
      pushMatch(
        found,
        "No rates found\nPlease review all required fields to proceed",
        true,
      );
    } else if (hasNoRates) {
      pushMatch(found, "No rates found");
    } else if (hasRequired) {
      pushMatch(found, "Please review all required fields to proceed");
    }
  }

  for (const msg of extractByPatterns(text, ACCESSORIAL_BLOCK_PATTERNS)) {
    pushMatch(found, msg);
  }
  for (const msg of extractByPatterns(text, LANE_ADDRESS_BLOCK_PATTERNS)) {
    pushMatch(found, msg);
  }

  return found;
}

/** 附加服务/承运商规则类阻断（应立刻如实返回，不等 patch/超时） */
export function extractMothershipAccessorialBlockMessages(
  body: string,
): string[] {
  return extractByPatterns(body.replace(/\r/g, ""), ACCESSORIAL_BLOCK_PATTERNS);
}

/** DOM 红色/alert 片段是否像业务报错（过滤 Inbox/导航噪声） */
export function looksLikePortalBusinessAlert(text: string): boolean {
  const t = text.replace(/\s+/g, " ").trim();
  if (t.length < 6 || t.length > 400) return false;
  if (/Got it|Mark all as read|Stay up-to-date|Refer and get/i.test(t)) {
    return false;
  }
  return /rate|quote|address|accessorial|carrier|residential|unsupported|unable|invalid|required field|lane|service area|线路|报价|地址|附加|不支持|必填|运力|承运|住宅|上门/i.test(
    t,
  );
}

/**
 * 将 DOM 红色提示片段转为可展示的官网业务文案列表。
 * 优先走模式提取；否则保留像业务报错的原文。
 */
export function extractMothershipPortalMessagesFromAlerts(
  snippets: string[],
): string[] {
  const joined = snippets.join("\n");
  const patterned = extractMothershipPortalQuoteMessages(joined);
  if (patterned.length > 0) return patterned;
  const found: string[] = [];
  for (const s of snippets) {
    if (looksLikePortalBusinessAlert(s)) pushMatch(found, s);
  }
  return found.slice(0, 4);
}

export function formatMothershipPortalQuoteMessage(
  messages: string[],
): string | null {
  if (messages.length === 0) return null;
  return scrubProviderBrandForCustomer(
    messages.map(translatePortalMessageToZh).join("\n\n"),
  );
}

/**
 * 官网红色 toast：该线路/货物组合明确无价。
 * 与「请填必填」常同时出现；此类必须硬拒，禁止引导用户白填二级详情。
 */
export function isPortalLaneNoRatesMessage(msg: string): boolean {
  return /unable to find any rates(?: for this lane)?|unfortunately we were unable to find any rates|该线路与货物组合暂无可用报价|for this lane and freight/i.test(
    msg,
  );
}

/** 官网提示：缺二级必填（公司名/联系人等），应立刻引导填二级，禁止空等到超时 */
export function isPortalNeedsDetailsMessage(msg: string): boolean {
  // 线路无价优先：即使同屏有 required fields，也不再判为「去补详情」
  if (isPortalLaneNoRatesMessage(msg)) return false;
  return /必填|required fields|请检查并填写所有必填/i.test(msg);
}

/**
 * 官网明确业务拒价（线路/地址/附加服务等）。
 * 与「缺必填」同时出现时：线路无价/硬拒优先，禁止误导补二级。
 */
export function isPortalHardBusinessBlock(msg: string): boolean {
  if (isPortalLaneNoRatesMessage(msg)) return true;
  if (isPortalNeedsDetailsMessage(msg)) return false;
  return /附加|住宅|上门|不支持该附加|承运合作伙伴|线路|服务范围|地址无效|地址不|运力|承运商无法|无法为该线路|暂无可用承运|该线路暂不|不在服务|地址错误|该线路与货物|invalid address|unsupported accessorial|no carriers|outside.*service|unable to .*quote|unable to find any rates|unfortunately we were unable|for this lane/i.test(
    msg,
  );
}

/** 从整页正文解析；无则 null */
export function parseMothershipPortalQuoteMessageFromBody(
  body: string,
): string | null {
  return formatMothershipPortalQuoteMessage(
    extractMothershipPortalQuoteMessages(body),
  );
}

/** 从 DOM 红色/alert 片段解析 */
export function parseMothershipPortalQuoteMessageFromAlerts(
  snippets: string[],
): string | null {
  return formatMothershipPortalQuoteMessage(
    extractMothershipPortalMessagesFromAlerts(snippets),
  );
}