<?php

namespace App\Support;

use App\Models\Business\CourierAgreementSignature;
use Illuminate\Support\Carbon;
use Illuminate\Validation\ValidationException;

final class SupplierCooperationTemplates
{
    public const TEMPLATES = [
        'dropshipping' => ['name' => '产品代发协议', 'code' => 'TPL-SUPPLIER-DROPSHIPPING-V1', 'version' => '1', 'file' => '产品代发协议-2022年确定版.docx', 'attachments' => 2],
        'consignment' => ['name' => '产品代销协议', 'code' => 'TPL-SUPPLIER-CONSIGNMENT-V1', 'version' => '1', 'file' => '产品代销协议-2022确定版.docx', 'attachments' => 4],
        'production' => ['name' => '生产合作协议', 'code' => 'TPL-SUPPLIER-PRODUCTION-V1', 'version' => '1', 'file' => '生产合作协议-2022确定版.docx', 'attachments' => 5],
    ];

    public const FIELDS = [
        'number' => ['label' => '合同编号', 'required' => true],
        'location' => ['label' => '合同签订地', 'required' => true, 'default' => '常州市武进区'],
        'party_a_address' => ['label' => '甲方地址'],
        'party_a_legal' => ['label' => '甲方法定代表人'],
        'party_a_contact' => ['label' => '甲方联系人'],
        'party_a_email' => ['label' => '甲方邮箱', 'type' => 'email'],
        'party_a_fax' => ['label' => '甲方传真'],
        'party_b_address' => ['label' => '乙方地址'],
        'party_b_legal' => ['label' => '乙方法定代表人'],
        'party_b_contact' => ['label' => '乙方联系人'],
        'party_b_email' => ['label' => '乙方邮箱', 'type' => 'email'],
        'party_b_fax' => ['label' => '乙方传真'],
        'account_name' => ['label' => '合同账户名称（原文为甲方付款账户）'],
        'account_number' => ['label' => '合同银行账号'],
        'bank_name' => ['label' => '合同开户行'],
        'brands' => ['label' => '生产协议使用的品牌', 'default' => '亿家达、欧意朗', 'templates' => ['production']],
        'product_model' => ['label' => '采购订单产品型号／SKU', 'templates' => ['consignment', 'production']],
        'supply_price' => ['label' => '采购订单供货价格／明细说明', 'templates' => ['consignment', 'production']],
        'purchase_contact' => ['label' => '采购对接人（订单附件）', 'templates' => ['consignment', 'production']],
        'purchase_qq' => ['label' => '采购对接人 QQ', 'templates' => ['consignment', 'production']],
        'purchase_wechat' => ['label' => '采购对接人微信', 'templates' => ['consignment', 'production']],
        'purchase_phone' => ['label' => '采购对接人电话', 'templates' => ['consignment', 'production']],
    ];

    public function metadata(string $key): array
    {
        return self::TEMPLATES[$key] ?? throw ValidationException::withMessages([
            'supplier_contract_template' => '请选择有效的供应商合作合同模板。',
        ]);
    }

    public function blocks(string $key): array
    {
        $this->metadata($key);

        return json_decode(file_get_contents(resource_path("contracts/supplier/{$key}-v1.json")), true, 512, JSON_THROW_ON_ERROR)['blocks'];
    }

    public function values(array $payload): array
    {
        $values = [];
        foreach (self::FIELDS as $key => $field) {
            $values[$key] = trim((string) ($payload['supplier_contract_fields'][$key] ?? ''));
        }
        $values += [
            'party_a' => $payload['cooperation_party_a_name'] ?? $payload['company_full_name'] ?? '',
            'party_b' => $payload['cooperation_party_b_name'] ?? '',
            'party_a_phone' => $payload['cooperation_party_a_phone'] ?? '',
            'party_b_phone' => $payload['cooperation_party_b_phone'] ?? '',
            'start_date' => $this->date($payload['cooperation_start_date'] ?? ''),
            'end_date' => $this->date($payload['cooperation_end_date'] ?? ''),
            'signature_date' => $this->date($payload['signature_date'] ?? ''),
            'party_a_signer' => $payload['secondary_operator_name'] ?? '',
            'party_b_signer' => $payload['supplier_contract_signer_name'] ?? '',
        ];

        return $values;
    }

    public function text(string $text, array $values, bool $preview = false): string
    {
        $parts = preg_split('/(\[\[[a-z_]+\]\])/', $text, -1, PREG_SPLIT_DELIM_CAPTURE);
        return implode('', array_map(static function (string $part) use ($values, $preview): string {
            if (preg_match('/^\[\[([a-z_]+)\]\]$/', $part, $match)) {
                $value = trim((string) ($values[$match[1]] ?? ''));
                return $preview
                    ? '<span class="agreement-preview-value" data-supplier-bind="' . e($match[1]) . '">' . e($value ?: '待填写') . '</span>'
                    : e($value ?: '________');
            }
            return e($part);
        }, $parts));
    }

    public function isSupplierContract(CourierAgreementSignature $signature): bool
    {
        return $signature->document_type === 'cooperation-contract'
            && ($signature->payload['partner_type'] ?? 'courier') === 'supplier';
    }

    private function date(string $value): string
    {
        return $value === '' ? '' : Carbon::parse($value)->format('Y年n月j日');
    }
}