<?php
namespace app\api\controller;

use support\Request;
use app\common\model\Order;
use app\common\model\Invoice;
use app\common\service\OrderFlowService;

class InvoiceController
{
    public function apply(Request $request)
    {
        $userId = $request->user->id;
        $orderId = (int)$request->post('order_id');
        $type = trim((string)$request->post('type', 'company'));
        $title = trim((string)$request->post('title', ''));
        $taxNo = trim((string)$request->post('tax_no', ''));
        $email = trim((string)$request->post('email', ''));

        if (!$orderId || !$title || !$email) {
            return jsonResponse(null, '开票信息不完整', 400);
        }

        if ($type === 'company' && !$taxNo) {
            return jsonResponse(null, '企业发票需填写税号', 400);
        }

        $order = Order::where('id', $orderId)->where('user_id', $userId)->first();
        if (!$order) {
            return jsonResponse(null, '订单不存在', 404);
        }

        if ($order->status === 'wait_pay') {
            return jsonResponse(null, '未支付订单不能开票', 400);
        }

        $invoice = Invoice::where('order_id', $orderId)->first();
        if ($invoice) {
            return jsonResponse(null, '该订单已申请开票', 400);
        }

        $invoice = Invoice::create([
            'order_id' => $orderId,
            'user_id' => $userId,
            'type' => $type,
            'title' => $title,
            'tax_no' => $taxNo,
            'email' => $email,
            'amount' => $order->total_price,
            'status' => 'pending'
        ]);

        OrderFlowService::addLog($orderId, 'invoice_apply', '已提交开票申请', '开票金额: ¥' . $invoice->amount, 'user', $userId);

        return jsonResponse(['id' => $invoice->id], '开票申请已提交');
    }

    public function detail(Request $request)
    {
        $userId = $request->user->id;
        $orderId = (int)$request->get('order_id');

        if (!$orderId) {
            return jsonResponse(null, '参数错误', 400);
        }

        $invoice = Invoice::where('order_id', $orderId)->where('user_id', $userId)->first();
        
        if (!$invoice) {
            return jsonResponse(null, '未找到开票记录', 404);
        }

        return jsonResponse([
            'id' => $invoice->id,
            'order_id' => $invoice->order_id,
            'type' => $invoice->type,
            'title' => $invoice->title,
            'tax_no' => $invoice->tax_no,
            'email' => $invoice->email,
            'amount' => $invoice->amount,
            'status' => $invoice->status,
            'file_url' => $invoice->file_url,
            'created_at' => $invoice->created_at->format('Y-m-d H:i:s')
        ]);
    }
}