export const POINTS_SYSTEM_CONFIG_KEY = "points_system_config";
export const POINTS_PACKAGES_KEY = "points_packages";

export type PointsSystemConfig = {
  enabled: boolean;
  blockOnInsufficient: boolean;
  creditCostPer3D: number;
};

export type PointsPackage = {
  id: string;
  name: string;
  points: number;
  price: number;
  currency: string;
  isEnabled: boolean;
};

export const defaultPointsSystemConfig: PointsSystemConfig = {
  enabled: false,
  blockOnInsufficient: true,
  creditCostPer3D: 0,
};

export const defaultPointsPackages: PointsPackage[] = [
  {
    id: "starter-1000",
    name: "入门包",
    points: 1000,
    price: 9.9,
    currency: "CNY",
    isEnabled: true,
  },
  {
    id: "pro-5000",
    name: "专业包",
    points: 5000,
    price: 39.9,
    currency: "CNY",
    isEnabled: true,
  },
];

export function normalizePointsSystemConfig(value: unknown): PointsSystemConfig {
  if (!value || typeof value !== "object") {
    return defaultPointsSystemConfig;
  }

  const raw = value as Partial<PointsSystemConfig>;
  const parsed3DCost = Number(raw.creditCostPer3D);
  return {
    enabled: raw.enabled === true,
    blockOnInsufficient: raw.blockOnInsufficient !== false,
    creditCostPer3D:
      Number.isFinite(parsed3DCost) && parsed3DCost > 0
        ? Math.min(100000, Math.round(parsed3DCost))
        : 0,
  };
}

export function normalizePointsPackages(value: unknown): PointsPackage[] {
  if (!Array.isArray(value)) {
    return defaultPointsPackages;
  }

  const normalized = value
    .map((item, index) => {
      if (!item || typeof item !== "object") return null;
      const raw = item as Partial<PointsPackage>;
      const id = String(raw.id || `package-${index + 1}`).trim();
      const name = String(raw.name || "").trim();
      const points = Number(raw.points);
      const price = Number(raw.price);
      const currency = String(raw.currency || "CNY").trim().toUpperCase();

      if (!id || !name || !Number.isFinite(points) || points <= 0) return null;
      if (!Number.isFinite(price) || price < 0) return null;

      return {
        id: id.slice(0, 64),
        name: name.slice(0, 64),
        points: Math.round(points),
        price: Number(price.toFixed(2)),
        currency: currency.slice(0, 8) || "CNY",
        isEnabled: raw.isEnabled !== false,
      } satisfies PointsPackage;
    })
    .filter((item): item is PointsPackage => Boolean(item))
    .slice(0, 30);

  return normalized.length > 0 ? normalized : defaultPointsPackages;
}