/**
 * Flock Freight 登录态选项组合约束
 * 依据：官网表单校验（仅冷藏须温控）、调度重量锁、批量探测易无价组合
 */

import { FLOCK_LIMITS } from "@/lib/constants/flock-limits";

export type FlockCompatIssue = {
  severity: "block" | "warn";
  code: string;
  message: string;
};

/** 探测与官网实测：易无报价的地点类型（仍可选，但提示） */
export const FLOCK_LOCATION_QUOTE_RISK: Readonly<Record<string, string>> = {
  limited_construction:
    "「施工工地」地点类型询价常无结果，建议改选「商业地址（无月台）」并勾选尾板/托盘车",
  limited_farm:
    "「农场 / 种养殖地」询价常无结果，建议改选「住宅」或「商业地址（无月台）」",
  limited_military:
    "「军事基地」等受限通道常需通行证，询价易失败，请确认承运商可进出后再选",
  limited_airport:
    "「机场」受限通道询价易失败或需额外手续，建议优先商业地址",
  limited_port:
    "「港口码头」受限通道询价易失败或需额外手续，建议优先商业地址",
};

/** 易无价包装 */
export const FLOCK_PACKAGING_QUOTE_RISK: Readonly<Record<string, string>> = {
  units: "「单件 / 整机」包装询价常无结果，建议改用纸箱、木箱或标准托盘",
  pails: "「小桶 / 提桶」单独作为主包装时询价不稳定，建议改用纸箱或托盘",
};

export function isFlockReeferOnlyWithoutTemp(input: {
  vehicleTypes: readonly string[];
  additionalServices: readonly string[];
}): boolean {
  const vehicles = input.vehicleTypes.map((v) => v.trim()).filter(Boolean);
  if (vehicles.length === 0) return false;
  const onlyReefer = vehicles.every((v) => v === "refrigerated");
  if (!onlyReefer) return false;
  return !input.additionalServices.includes("temperature_control");
}

export function isFlockTempWithoutReefer(input: {
  vehicleTypes: readonly string[];
  additionalServices: readonly string[];
}): boolean {
  if (!input.additionalServices.includes("temperature_control")) return false;
  return !input.vehicleTypes.includes("refrigerated");
}

export function isFlockSprinterOnly(
  vehicleTypes: readonly string[],
): boolean {
  const vehicles = vehicleTypes.map((v) => v.trim()).filter(Boolean);
  return vehicles.length > 0 && vehicles.every((v) => v === "sprinter");
}

export function evaluateFlockOptionCompat(input: {
  pickupLocationType: string;
  deliveryLocationType: string;
  packagingTypes: readonly string[];
  vehicleTypes: readonly string[];
  additionalServices: readonly string[];
  shipmentWeightLb?: number;
}): FlockCompatIssue[] {
  const issues: FlockCompatIssue[] = [];

  if (
    isFlockReeferOnlyWithoutTemp({
      vehicleTypes: input.vehicleTypes,
      additionalServices: input.additionalServices,
    })
  ) {
    issues.push({
      severity: "block",
      code: "flock_reefer_needs_temp",
      message:
        "仅允许「冷藏车」时须同时勾选附加服务「温控 / 冷链」，否则官网无法提交询价",
    });
  }

  if (
    isFlockTempWithoutReefer({
      vehicleTypes: input.vehicleTypes,
      additionalServices: input.additionalServices,
    })
  ) {
    issues.push({
      severity: "block",
      code: "flock_temp_needs_reefer",
      message: "已勾选「温控 / 冷链」时，允许车型中须包含「冷藏车」",
    });
  }

  if (isFlockSprinterOnly(input.vehicleTypes)) {
    issues.push({
      severity: "warn",
      code: "flock_sprinter_only",
      message:
        "仅选「小型厢车」时易无报价，建议同时勾选厢式货车或干货挂车",
    });
  }

  for (const side of ["pickup", "delivery"] as const) {
    const typeId =
      side === "pickup" ? input.pickupLocationType : input.deliveryLocationType;
    const risk = FLOCK_LOCATION_QUOTE_RISK[typeId];
    if (risk) {
      issues.push({
        severity: "warn",
        code: `flock_loc_risk_${side}_${typeId}`,
        message: `${side === "pickup" ? "提货" : "派送"}：${risk}`,
      });
    }
  }

  for (const pack of input.packagingTypes) {
    const risk = FLOCK_PACKAGING_QUOTE_RISK[pack];
    if (risk) {
      issues.push({
        severity: "warn",
        code: `flock_pack_risk_${pack}`,
        message: risk,
      });
    }
  }

  const wt = input.shipmentWeightLb;
  if (
    typeof wt === "number" &&
    Number.isFinite(wt) &&
    wt > 0 &&
    wt <= FLOCK_LIMITS.schedulingWeightMinLb
  ) {
    issues.push({
      severity: "warn",
      code: "flock_scheduling_weight",
      message: `整票总重不超过 ${FLOCK_LIMITS.schedulingWeightMinLb} lb 时，部分预约/时间窗调度选项不可用（官网灰色）`,
    });
  }

  return issues;
}

export function flockOptionHasBlock(
  issues: readonly FlockCompatIssue[],
): boolean {
  return issues.some((i) => i.severity === "block");
}