Assist_Design/apps/portal/src/features/sim-management/components/SimManagementSection.tsx

"use client";

import React, { useState, useEffect, useCallback } from "react";
import {
  DevicePhoneMobileIcon,
  ExclamationTriangleIcon,
  ArrowPathIcon,
  DocumentTextIcon,
} from "@heroicons/react/24/outline";
import { type SimDetails } from "./SimDetailsCard";
import { apiClient } from "@/lib/api";
import Link from "next/link";

interface SimManagementSectionProps {
  subscriptionId: number;
}

interface SimInfo {
  details: SimDetails;
  usage?: {
    todayUsageMb: number;
    recentDaysUsage: Array<{ date: string; usageMb: number }>;
  };
}

export function SimManagementSection({ subscriptionId }: SimManagementSectionProps) {
  const [simInfo, setSimInfo] = useState<SimInfo | null>(null);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState<string | null>(null);
  const [activeTab, setActiveTab] = useState<"sim" | "invoices">("sim");

  const fetchSimInfo = useCallback(async () => {
    try {
      setError(null);

      const response = await apiClient.GET("/api/subscriptions/{id}/sim", {
        params: { path: { id: subscriptionId } },
      });

      const payload = response.data as { details: SimDetails; usage: any } | undefined;

      if (!payload) {
        throw new Error("Failed to load SIM information");
      }

      setSimInfo(payload);
    } catch (err: unknown) {
      const hasStatus = (v: unknown): v is { status: number } =>
        typeof v === "object" &&
        v !== null &&
        "status" in v &&
        typeof (v as { status: unknown }).status === "number";
      if (hasStatus(err) && err.status === 400) {
        setError("This subscription is not a SIM service");
      } else {
        setError(err instanceof Error ? err.message : "Failed to load SIM information");
      }
    } finally {
      setLoading(false);
    }
  }, [subscriptionId]);

  useEffect(() => {
    void fetchSimInfo();
  }, [fetchSimInfo]);

  const handleRefresh = () => {
    setLoading(true);
    void fetchSimInfo();
  };

  const handleActionSuccess = () => {
    void fetchSimInfo();
  };

  if (loading) {
    return (
      <div className="min-h-screen bg-gray-50">
        {/* Header */}
        <div className="bg-[#2F80ED] rounded-b-3xl px-5 py-4">
          <div className="flex items-center justify-between">
            <h1 className="text-white text-xl font-bold">Service Management</h1>
            <div className="flex gap-2">
              <div className="px-4 py-2 rounded-full border-2 border-white bg-white text-gray-900 text-sm font-medium">
                SIM Management
              </div>
              <div className="px-4 py-2 rounded-full border-2 border-white text-white text-sm font-medium">
                Invoices
              </div>
            </div>
          </div>
        </div>
        
        {/* Loading Animation */}
        <div className="p-5 space-y-4">
          <div className="animate-pulse space-y-4">
            <div className="h-24 bg-gray-200 rounded-2xl"></div>
            <div className="grid grid-cols-2 gap-4">
              <div className="h-40 bg-gray-200 rounded-2xl"></div>
              <div className="h-40 bg-gray-200 rounded-2xl"></div>
            </div>
            <div className="h-12 bg-gray-200 rounded-full"></div>
          </div>
        </div>
      </div>
    );
  }

  if (error) {
    return (
      <div className="min-h-screen bg-gray-50">
        <div className="bg-[#2F80ED] rounded-b-3xl px-5 py-4">
          <h1 className="text-white text-xl font-bold">Service Management</h1>
        </div>
        <div className="p-5 text-center py-12">
          <div className="bg-red-50 rounded-full p-4 w-20 h-20 mx-auto mb-6">
            <ExclamationTriangleIcon className="h-12 w-12 text-red-500 mx-auto" />
          </div>
          <h3 className="text-xl font-semibold text-gray-900 mb-3">Unable to Load SIM Information</h3>
          <p className="text-gray-600 mb-8 max-w-md mx-auto">{error}</p>
          <button
            onClick={handleRefresh}
            className="inline-flex items-center px-6 py-3 rounded-full text-white bg-[#2F80ED] hover:bg-[#2671d9] font-semibold"
          >
            <ArrowPathIcon className="h-5 w-5 mr-2" />
            Retry
          </button>
        </div>
      </div>
    );
  }

  if (!simInfo) {
    return null;
  }

  const remainingGB = simInfo.details.remainingQuotaMb / 1000;
  const usedMB = simInfo.usage?.todayUsageMb || 0;
  const totalGB = 50; // Mock - should come from plan
  const usagePercent = ((totalGB * 1000 - simInfo.details.remainingQuotaMb) / (totalGB * 1000)) * 100;

  return (
    <div id="sim-management" className="min-h-screen bg-gray-50">
      {/* 1. Top Header Bar */}
      <div className="bg-[#2F80ED] rounded-b-3xl px-5 py-4 shadow-lg">
        <div className="flex items-center justify-between">
          <h1 className="text-white text-[22px] font-bold">Service Management</h1>
          <div className="flex gap-2">
            <button
              onClick={() => setActiveTab("sim")}
              className={`px-4 py-2 rounded-full border-2 border-white text-sm font-medium transition-all ${
                activeTab === "sim"
                  ? "bg-white text-gray-900"
                  : "bg-transparent text-white"
              }`}
            >
              SIM Management
            </button>
            <Link
              href={`/subscriptions/${subscriptionId}`}
              className="px-4 py-2 rounded-full border-2 border-white text-white text-sm font-medium"
            >
              Invoices
            </Link>
          </div>
        </div>
      </div>

      {/* Content */}
      <div className="p-5 space-y-4">
        {/* 2. Billing Information Section */}
        <div className="bg-white rounded-2xl shadow-sm p-5">
          <div className="grid grid-cols-3 gap-4 text-center">
            <div>
              <p className="text-sm text-gray-500 mb-1">Monthly Cost</p>
              <p className="text-base font-semibold text-[#1A1A1A]">¥3,100</p>
            </div>
            <div>
              <p className="text-sm text-gray-500 mb-1">Next Billing</p>
              <p className="text-base font-semibold text-[#1A1A1A]">Jul 1 2025</p>
            </div>
            <div>
              <p className="text-sm text-gray-500 mb-1">Registered</p>
              <p className="text-base font-semibold text-[#1A1A1A]">Aug 2 2023</p>
            </div>
          </div>
        </div>

        {/* 3. Invoice & Data Usage Row */}
        <div className="grid grid-cols-2 gap-4">
          {/* Left Column - Invoice Card */}
          <div className="bg-gradient-to-br from-blue-50 to-blue-100 rounded-2xl p-5 flex flex-col justify-between">
            <div>
              <p className="text-sm text-gray-600 mb-2">Latest Invoice</p>
              <p className="text-3xl font-bold text-[#2F80ED] mb-4">3400 ¥</p>
            </div>
            <button className="w-full bg-[#2F80ED] text-white font-semibold py-3 rounded-full hover:bg-[#2671d9] transition-colors">
              PAY
            </button>
          </div>

          {/* Right Column - Data Usage Circle */}
          <div className="bg-white rounded-2xl p-5 flex flex-col items-center justify-center">
            <p className="text-xs text-gray-500 mb-2">Remaining data</p>
            <div className="relative w-32 h-32">
              <svg className="w-full h-full transform -rotate-90">
                <circle
                  cx="64"
                  cy="64"
                  r="56"
                  fill="none"
                  stroke="#E5E7EB"
                  strokeWidth="8"
                />
                <circle
                  cx="64"
                  cy="64"
                  r="56"
                  fill="none"
                  stroke="#4B8CF7"
                  strokeWidth="8"
                  strokeLinecap="round"
                  strokeDasharray={`${2 * Math.PI * 56}`}
                  strokeDashoffset={`${2 * Math.PI * 56 * (1 - usagePercent / 100)}`}
                  className="transition-all duration-500"
                />
              </svg>
              <div className="absolute inset-0 flex flex-col items-center justify-center">
                <p className="text-2xl font-bold text-gray-900">{remainingGB.toFixed(1)} GB</p>
                <p className="text-sm text-[#D72828] font-medium">–{usedMB.toFixed(2)} GB</p>
              </div>
            </div>
          </div>
        </div>

        {/* 4. Top Up Button */}
        <button className="w-full bg-[#2F80ED] text-white font-semibold py-3.5 rounded-full hover:bg-[#2671d9] transition-colors shadow-md">
          Top Up Data
        </button>

        {/* 5. SIM Management Actions Section */}
        <div className="bg-[#D7D7D7] rounded-2xl p-4">
          <h2 className="text-base font-semibold text-gray-900 mb-3">SIM Management Actions</h2>
          <div className="grid grid-cols-2 gap-3">
            <button className="bg-[#E5E5E5] rounded-xl py-6 text-center font-medium text-gray-900 hover:bg-gray-300 transition-colors">
              Top Up Data
            </button>
            <button className="bg-[#E5E5E5] rounded-xl py-6 text-center font-medium text-gray-900 hover:bg-gray-300 transition-colors">
              Change Plan
            </button>
            <button className="bg-[#E5E5E5] rounded-xl py-6 text-center font-medium text-gray-900 hover:bg-gray-300 transition-colors">
              Reissue SIM
            </button>
            <button className="bg-[#E5E5E5] rounded-xl py-6 text-center font-medium text-gray-900 hover:bg-gray-300 transition-colors">
              Cancel SIM
            </button>
          </div>
        </div>

        {/* 6. Voice Status Section */}
        <div className="bg-[#D7D7D7] rounded-2xl p-4">
          <h2 className="text-base font-semibold text-gray-900 mb-3">Voice Status</h2>
          <div className="grid grid-cols-2 gap-3">
            <button
              className={`rounded-xl py-6 text-center font-medium transition-colors ${
                simInfo.details.voiceMailEnabled
                  ? "bg-blue-100 text-blue-700 border-2 border-blue-400"
                  : "bg-[#E5E5E5] text-gray-900 hover:bg-gray-300"
              }`}
            >
              Voice Mail
            </button>
            <button className="bg-[#E5E5E5] rounded-xl py-6 text-center font-medium text-gray-900 hover:bg-gray-300 transition-colors">
              Network Type
              <span className="block text-sm text-gray-600 mt-1">{simInfo.details.networkType || "4G"}</span>
            </button>
            <button
              className={`rounded-xl py-6 text-center font-medium transition-colors ${
                simInfo.details.callWaitingEnabled
                  ? "bg-blue-100 text-blue-700 border-2 border-blue-400"
                  : "bg-[#E5E5E5] text-gray-900 hover:bg-gray-300"
              }`}
            >
              Call Waiting
            </button>
            <button
              className={`rounded-xl py-6 text-center font-medium transition-colors ${
                simInfo.details.internationalRoamingEnabled
                  ? "bg-blue-100 text-blue-700 border-2 border-blue-400"
                  : "bg-[#E5E5E5] text-gray-900 hover:bg-gray-300"
              }`}
            >
              International Roaming
            </button>
          </div>
        </div>

        {/* 7. Important Notes Section */}
        <div className="bg-white rounded-2xl shadow-sm p-5">
          <h3 className="text-base font-semibold text-gray-900 mb-3">Important Notes</h3>
          <ul className="space-y-2 text-[13px] text-[#7A7A7A] leading-relaxed">
            <li className="flex items-start">
              <span className="mr-2">•</span>
              <span>Changes to SIM settings typically take effect instantaneously (approx. 30min)</span>
            </li>
            <li className="flex items-start">
              <span className="mr-2">•</span>
              <span>May require smartphone device restart after changes are applied</span>
            </li>
            <li className="flex items-start">
              <span className="mr-2">•</span>
              <span>Voice/Network/Plan change requests must be requested at least 30 minutes apart</span>
            </li>
            <li className="flex items-start">
              <span className="mr-2">•</span>
              <span>Changes to Voice Mail / Call Waiting must be requested before the 25th of the month</span>
            </li>
          </ul>
        </div>
      </div>
    </div>
  );
}