import type { WecomEntryConfig } from "../api/auth";

export type WecomNoticeTone = "info" | "warning" | "success";

export type WecomNotice = {
  tone: WecomNoticeTone;
  title: string;
  description: string;
};

const STATUS_REASON_LABELS: Record<string, string> = {
  wecom_disabled: "管理员尚未启用企业微信接入",
  entry_disabled: "企业微信工作台入口尚未正式开放",
  oauth_disabled: "企业微信 OAuth 尚未启用",
  corp_id_missing: "未配置 CorpID",
  agent_id_missing: "未配置 AgentID",
  redirect_uri_missing: "未配置 OAuth 回调地址",
};

export function resolveWecomStatusReasonLabels(statusReasons: string[]) {
  return statusReasons.map((reason) => STATUS_REASON_LABELS[reason] ?? reason);
}

export function resolveWecomEntryStatus(config?: WecomEntryConfig | null) {
  if (!config) {
    return {
      label: "检测中",
      tone: "info" as const,
      description: "正在读取企业微信接入状态。",
      reasonLabels: [],
    };
  }

  if (config.status === "ready") {
    return {
      label: "已启用",
      tone: "success" as const,
      description: "员工可从企业微信工作台直接进入 OA，也可在个人设置里维护绑定。",
      reasonLabels: [],
    };
  }

  const reasonLabels = resolveWecomStatusReasonLabels(config.statusReasons);

  if (config.bindEnabled && !config.entryEnabled) {
    return {
      label: "入口未开放",
      tone: "warning" as const,
      description: "当前可先完成绑定，企业微信工作台直达入口尚未正式开放。",
      reasonLabels,
    };
  }

  if (config.status === "misconfigured") {
    return {
      label: "配置不完整",
      tone: "warning" as const,
      description: "请管理员补齐 CorpID、AgentID 与回调地址后再开放企业微信入口。",
      reasonLabels,
    };
  }

  return {
    label: "未启用",
    tone: "info" as const,
    description: "当前未启用企业微信入口，仍可使用账号密码登录。",
    reasonLabels,
  };
}

export function resolveWecomLoginNotice(value: string | null): WecomNotice | null {
  if (value === "unbound") {
    return {
      tone: "warning",
      title: "当前企业微信账号尚未绑定",
      description: "请先用账号密码登录，再到个人设置完成绑定。",
    };
  }

  if (value === "invalid") {
    return {
      tone: "warning",
      title: "企业微信登录状态已失效",
      description: "请重新从企业微信工作台进入，或改用账号密码登录。",
    };
  }

  if (value === "expired") {
    return {
      tone: "warning",
      title: "企业微信登录已超时",
      description: "请重新从企业微信工作台进入 OA。",
    };
  }

  return null;
}

export function resolveWecomBindNotice(value: string | null): WecomNotice | null {
  if (value === "success") {
    return {
      tone: "success",
      title: "企业微信绑定成功",
      description: "下次可直接从企业微信工作台进入 OA。",
    };
  }

  if (value === "conflict") {
    return {
      tone: "warning",
      title: "该企业微信账号已绑定其他员工",
      description: "请联系管理员核对后再处理。",
    };
  }

  if (value === "employee_inactive") {
    return {
      tone: "warning",
      title: "当前账号已停用",
      description: "停用账号无法绑定企业微信，请联系管理员。",
    };
  }

  if (value === "invalid") {
    return {
      tone: "warning",
      title: "本次绑定状态无效",
      description: "请回到个人设置后重新发起绑定。",
    };
  }

  if (value === "expired") {
    return {
      tone: "warning",
      title: "本次绑定已超时",
      description: "请回到个人设置后重新发起绑定。",
    };
  }

  return null;
}

export function buildWecomLoginUrl(loginUrl: string, returnTo: string, deviceFingerprint?: string) {
  const baseOrigin = typeof window !== "undefined" ? window.location.origin : "http://127.0.0.1";
  const url = new URL(loginUrl, baseOrigin);
  url.searchParams.set("returnTo", returnTo);
  if (deviceFingerprint) {
    url.searchParams.set("deviceFingerprint", deviceFingerprint);
  }
  return url.origin === baseOrigin ? `${url.pathname}${url.search}` : url.toString();
}