<?php

namespace App\Http\Controllers\Finance;

use App\Http\Controllers\Controller;
use App\Models\Finance\Customer;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;

class CustomerController extends Controller
{
    public function index(Request $request): JsonResponse
    {
        $tenantId = session('selected_tenant_id', 1);
        $query = Customer::forTenant($tenantId);

        if ($search = $request->input('search')) {
            $query->where(function ($q) use ($search) {
                $q->where('name', 'like', "%{$search}%")
                  ->orWhere('ceo', 'like', "%{$search}%")
                  ->orWhere('manager', 'like', "%{$search}%");
            });
        }
        if ($status = $request->input('status')) {
            if ($status !== 'all') $query->where('status', $status);
        }
        if ($grade = $request->input('grade')) {
            if ($grade !== 'all') $query->where('grade', $grade);
        }

        $customers = $query->orderBy('created_at', 'desc')->get()->map(fn($item) => [
            'id' => $item->id, 'name' => $item->name, 'bizNo' => $item->biz_no,
            'ceo' => $item->ceo, 'industry' => $item->industry, 'grade' => $item->grade,
            'contact' => $item->contact, 'email' => $item->email, 'address' => $item->address,
            'manager' => $item->manager, 'managerPhone' => $item->manager_phone,
            'status' => $item->status, 'memo' => $item->memo,
        ]);

        $all = Customer::forTenant($tenantId)->get();
        $stats = [
            'total' => $all->count(),
            'active' => $all->where('status', 'active')->count(),
            'vip' => $all->where('grade', 'VIP')->count(),
            'inactive' => $all->where('status', 'inactive')->count(),
        ];

        return response()->json(['success' => true, 'data' => $customers, 'stats' => $stats]);
    }

    public function store(Request $request): JsonResponse
    {
        $request->validate(['name' => 'required|string|max:100']);
        $tenantId = session('selected_tenant_id', 1);

        Customer::create([
            'tenant_id' => $tenantId, 'name' => $request->input('name'),
            'biz_no' => $request->input('bizNo'), 'ceo' => $request->input('ceo'),
            'industry' => $request->input('industry'), 'grade' => $request->input('grade', 'Silver'),
            'contact' => $request->input('contact'), 'email' => $request->input('email'),
            'address' => $request->input('address'), 'manager' => $request->input('manager'),
            'manager_phone' => $request->input('managerPhone'),
            'status' => $request->input('status', 'active'), 'memo' => $request->input('memo'),
        ]);

        return response()->json(['success' => true, 'message' => '고객사가 등록되었습니다.']);
    }

    public function update(Request $request, int $id): JsonResponse
    {
        $tenantId = session('selected_tenant_id', 1);
        $item = Customer::forTenant($tenantId)->findOrFail($id);
        $request->validate(['name' => 'required|string|max:100']);

        $item->update([
            'name' => $request->input('name'), 'biz_no' => $request->input('bizNo'),
            'ceo' => $request->input('ceo'), 'industry' => $request->input('industry'),
            'grade' => $request->input('grade', $item->grade),
            'contact' => $request->input('contact'), 'email' => $request->input('email'),
            'address' => $request->input('address'), 'manager' => $request->input('manager'),
            'manager_phone' => $request->input('managerPhone'),
            'status' => $request->input('status', $item->status), 'memo' => $request->input('memo'),
        ]);

        return response()->json(['success' => true, 'message' => '고객사가 수정되었습니다.']);
    }

    public function destroy(int $id): JsonResponse
    {
        $tenantId = session('selected_tenant_id', 1);
        Customer::forTenant($tenantId)->findOrFail($id)->delete();
        return response()->json(['success' => true, 'message' => '고객사가 삭제되었습니다.']);
    }
}