<?php
namespace App\Http\Controllers\Admin;

use App\C2cMerchant;
use App\C2cMerchantOrder;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;

class C2cMerchantController extends Controller
{
    public function index() { return view('manages.c2c_merchant.index'); }
    public function orderIndex() { return view('manages.c2c_merchant.orders'); }

    public function list(Request $request)
    {
        $data = C2cMerchant::orderBy('sort', 'desc')->orderBy('id', 'desc')
            ->paginate($request->input('limit', 20));
        return $this->layuiData($data);
    }

    public function save(Request $request)
    {
        $id = $request->input('id');
        $fields = $request->only([
            'name','logo','available_qty','min_amount','max_amount','unit_price',
            'crypto_currency','fiat_currency','payment_methods','rating',
            'contact_type','contact_link','status','sort'
        ]);
        foreach (['unit_price','available_qty','min_amount','max_amount','rating','sort'] as $k) {
            if (!isset($fields[$k]) || $fields[$k] === '') $fields[$k] = 0;
        }
        if (empty($fields['name'])) return $this->error('Name is required');

        if ($id) {
            C2cMerchant::where('id', $id)->update($fields);
        } else {
            C2cMerchant::create($fields);
        }
        return $this->success('OK');
    }

    public function delete(Request $request)
    {
        C2cMerchant::destroy($request->input('id'));
        return $this->success('Deleted');
    }

    public function orderList(Request $request)
    {
        $query = C2cMerchantOrder::query()
            ->leftJoin('users', 'c2c_merchant_order.user_id', '=', 'users.id')
            ->leftJoin('c2c_merchant', 'c2c_merchant_order.merchant_id', '=', 'c2c_merchant.id')
            ->select(
                'c2c_merchant_order.*',
                'users.phone as user_phone',
                'users.email as user_email',
                'c2c_merchant.name as merchant_name'
            );

        $merchant_id = $request->input('merchant_id');
        if ($merchant_id) $query->where('c2c_merchant_order.merchant_id', $merchant_id);

        $status = $request->input('status');
        if ($status !== null && $status !== '' && $status !== 'all') {
            $query->where('c2c_merchant_order.status', intval($status));
        }

        $data = $query->orderBy('c2c_merchant_order.id', 'desc')
            ->paginate($request->input('limit', 20));

        $statusMap = [0 => 'Pending', 1 => 'Completed', 2 => 'Cancelled', 3 => 'Expired'];
        $dirMap = ['buy' => 'Buy', 'sell' => 'Sell'];
        foreach ($data as $item) {
            $item->status_text = $statusMap[$item->status] ?? '';
            $item->direction_text = $dirMap[$item->direction] ?? $item->direction;
        }
        return $this->layuiData($data);
    }

    public function completeOrder(Request $request)
    {
        $id = intval($request->input('id'));
        $order = C2cMerchantOrder::find($id);
        if (!$order) return $this->error('Order not found');
        if ($order->status != 0) return $this->error('Order already processed');

        $order->update(['status' => 1]);
        return $this->success('Completed');
    }
}