import type { $ZodStringFormats } from "../core/checks.js";
import type * as errors from "../core/errors.js";
import * as util from "../core/util.js";

const Sizable: Record<string, { unit: string; verb: string }> = {
  string: { unit: "字符", verb: "包含" },
  file: { unit: "字节", verb: "包含" },
  array: { unit: "项", verb: "包含" },
  set: { unit: "项", verb: "包含" },
};

function getSizing(origin: string): { unit: string; verb: string } | null {
  return Sizable[origin] ?? null;
}

export const parsedType = (data: any): string => {
  const t = typeof data;

  switch (t) {
    case "number": {
      return Number.isNaN(data) ? "非数字(NaN)" : "数字";
    }
    case "object": {
      if (Array.isArray(data)) {
        return "数组";
      }
      if (data === null) {
        return "空值(null)";
      }

      if (Object.getPrototypeOf(data) !== Object.prototype && data.constructor) {
        return data.constructor.name;
      }
    }
  }
  return t;
};

const Nouns: {
  [k in $ZodStringFormats | (string & {})]?: string;
} = {
  regex: "输入",
  email: "电子邮件",
  url: "URL",
  emoji: "表情符号",
  uuid: "UUID",
  uuidv4: "UUIDv4",
  uuidv6: "UUIDv6",
  nanoid: "nanoid",
  guid: "GUID",
  cuid: "cuid",
  cuid2: "cuid2",
  ulid: "ULID",
  xid: "XID",
  ksuid: "KSUID",
  datetime: "ISO日期时间",
  date: "ISO日期",
  time: "ISO时间",
  duration: "ISO时长",
  ipv4: "IPv4地址",
  ipv6: "IPv6地址",
  cidrv4: "IPv4网段",
  cidrv6: "IPv6网段",
  base64: "base64编码字符串",
  base64url: "base64url编码字符串",
  json_string: "JSON字符串",
  e164: "E.164号码",
  jwt: "JWT",
  template_literal: "输入",
};

const error: errors.$ZodErrorMap = (issue) => {
  switch (issue.code) {
    case "invalid_type":
      return `无效输入：期望 ${issue.expected}，实际接收 ${parsedType(issue.input)}`;
    case "invalid_value":
      if (issue.values.length === 1) return `无效输入：期望 ${util.stringifyPrimitive(issue.values[0])}`;
      return `无效选项：期望以下之一 ${util.joinValues(issue.values, "|")}`;
    case "too_big": {
      const adj = issue.inclusive ? "<=" : "<";
      const sizing = getSizing(issue.origin);
      if (sizing)
        return `数值过大：期望 ${issue.origin ?? "值"} ${adj}${issue.maximum.toString()} ${sizing.unit ?? "个元素"}`;
      return `数值过大：期望 ${issue.origin ?? "值"} ${adj}${issue.maximum.toString()}`;
    }
    case "too_small": {
      const adj = issue.inclusive ? ">=" : ">";
      const sizing = getSizing(issue.origin);
      if (sizing) {
        return `数值过小：期望 ${issue.origin} ${adj}${issue.minimum.toString()} ${sizing.unit}`;
      }
      return `数值过小：期望 ${issue.origin} ${adj}${issue.minimum.toString()}`;
    }
    case "invalid_format": {
      const _issue = issue as errors.$ZodStringFormatIssues;
      if (_issue.format === "starts_with") return `无效字符串：必须以 "${_issue.prefix}" 开头`;
      if (_issue.format === "ends_with") return `无效字符串：必须以 "${_issue.suffix}" 结尾`;
      if (_issue.format === "includes") return `无效字符串：必须包含 "${_issue.includes}"`;
      if (_issue.format === "regex") return `无效字符串：必须满足正则表达式 ${_issue.pattern}`;
      return `无效${Nouns[_issue.format] ?? issue.format}`;
    }
    case "not_multiple_of":
      return `无效数字：必须是 ${issue.divisor} 的倍数`;
    case "unrecognized_keys":
      return `出现未知的键(key): ${util.joinValues(issue.keys, ", ")}`;
    case "invalid_key":
      return `${issue.origin} 中的键(key)无效`;
    case "invalid_union":
      return "无效输入";
    case "invalid_element":
      return `${issue.origin} 中包含无效值(value)`;
    default:
      return `无效输入`;
  }
};

export { error };

export default function (): { localeError: errors.$ZodErrorMap } {
  return {
    localeError: error,
  };
}