<?php

namespace App\Models;

use App\Services\Payment\PaymentProviderCatalog;
use App\Services\Payment\PaymentProviderService;
use App\Constants\Util;
use Illuminate\Database\Eloquent\SoftDeletes;

class RechargeChannel extends BaseModel
{
    use SoftDeletes;

    protected $table = 'recharge_channel';
    protected $fillable = ['id', 'data_type', 'from', 'key', 'name', 'type', 'rate', 'fee_fixed', 'min', 'max', 'fixed', 'sort', 'status', 'logo'];
    protected $hidden = [];

    /** 三方手续费组合方式：只按百分比、只收每笔固定费用、百分比 + 每笔固定费用。 */
    public const FEE_MODES = ['rate' => '百分比', 'fixed' => '每笔固定', 'rate_fixed' => '百分比+每笔固定'];

    /**
     * 三方手续费展示：fee = 金额 × rate + fee_fixed（rate 为小数），平台承担。
     * @return array{fee_mode: string, fee_mode_text: string, fee_rate_percent: string, fee_text: string}
     */
    public static function feeDisplay($rate, $fixed): array
    {
        $rate = self::decimal($rate, 6);
        $fixed = self::decimal($fixed, 4);
        $hasRate = bccomp($rate, '0', 6) > 0;
        $hasFixed = bccomp($fixed, '0', 4) > 0;
        $mode = $hasRate && $hasFixed ? 'rate_fixed' : ($hasFixed ? 'fixed' : ($hasRate ? 'rate' : 'none'));
        $percent = self::trimZeros(bcmul($rate, '100', 4));
        $parts = [];
        if ($hasRate) $parts[] = $percent . '%';
        if ($hasFixed) $parts[] = '每笔' . self::trimZeros($fixed) . '元';
        return [
            'fee_mode' => $mode,
            'fee_mode_text' => self::FEE_MODES[$mode] ?? '无手续费',
            'fee_rate_percent' => $percent,
            'fee_text' => $parts ? implode(' + ', $parts) : '无手续费',
        ];
    }

    private static function decimal($value, int $scale): string
    {
        if ($value === null || $value === '') return bcadd('0', '0', $scale);
        return is_string($value) && is_numeric($value) ? bcadd($value, '0', $scale) : number_format((float)$value, $scale, '.', '');
    }

    private static function trimZeros(string $value): string
    {
        return str_contains($value, '.') ? rtrim(rtrim($value, '0'), '.') : $value;
    }

    public function getLogoAttribute($value): string
    {
        return $value ? (string)Util::ensureUrl($value) : '';
    }

    public function scopeAvailable($query)
    {
        $query->where('status', 1);
        $statuses = PaymentProviderService::statuses();
        foreach (PaymentProviderCatalog::codes() as $code) {
            if (($statuses[$code] ?? 0) === 1) continue;
            foreach ([1, 2] as $direction) {
                $types = PaymentProviderCatalog::channelTypesForProvider($code, $direction);
                if ($types === []) continue;
                $query->whereNot(fn ($part) => $part->where('data_type', $direction)->whereIn('type', $types));
            }
        }
        return $query;
    }

    public function getFixedAttribute($value)
    {
        return $value ? explode(',', $value) : null; 
    }

    public static function getChannel($data_type, $type = [])
    {
        $query = self::where('status', 1)->where('data_type', $data_type);
        if ($type) {
            $query = $query->whereIn('type', $type);
        }
        $statuses = PaymentProviderService::statuses();
        $channel = $query->orderBy('sort')->orderBy('id')->get(['type', 'name', 'from', 'data_type', 'status'])
            ->map(function ($row) use ($statuses) {
                $data = $row->toArray() + PaymentProviderCatalog::channelDisplay($row->toArray(), $statuses);
                return $data + ['disabled' => $data['company_status'] === 0,
                    'disabled_reason' => $data['company_status'] === 0 ? '支付公司已禁用' : ''];
            })->all();
        $channel = array_column($channel, null, 'type');
        return array_values($channel);
    }

    //获取充值通道
    public static function product($from = '')
    {
        $where['status'] = 1;
        $where['data_type'] = 1;
        if($from){
            $where['from'] = $from;
        }
        $list = self::where($where)->available()->orderBy('sort', 'asc')->get()->toArray();
        return array_column($list, null, 'key');
    }

    public static function getFormatChannel($data_type, $recharge_channel_group_id = 1)
    {
        $recharge_channel_group_id = $recharge_channel_group_id > 0 ? $recharge_channel_group_id : 1;
        $query = self::where('data_type', $data_type)->available();
        
        $field = 'recharge_type'; //充值类型
        if ($data_type == 2) {
            //提现类型
            $field = 'withdraw_type';
        }
        $group = RechargeChannelGroup::query()->find($recharge_channel_group_id);
        $types = $group ? (array)$group->{$field} : [];
        if (!$types) {
            return [];
        }
        $query = $query->whereIn('type', $types);
        
        $direction = (int)$data_type;
        $fields = ['id', 'data_type','name','type', 'min','max','fixed','rate'];
        if (\App\Services\Payment\RechargeChannelLogoService::supportsDirection($direction)) {
            $fields[] = 'logo';
        }
        $product = $query->orderBy('sort', 'asc')->orderBy('id')->select($fields)->get()->toArray();
        
        $logos = $direction === 1 ? \App\Services\Payment\RechargeChannelLogoService::configured(array_column($product, 'type')) : [];
        $list = [];
        foreach($product as $key => $pv) {
            if (isset($list[$pv['type']]['config'])) {
                $config = $list[$pv['type']]['config'];
                if (empty($config['range'])) {
                    $config['range'][] = $config;
                }
                if ($pv['min'] < $config['min']) {
                    $config['min'] = $pv['min'];
                } 
                if ($pv['max'] > $config['max']) {
                    $config['max'] = $pv['max'];
                }
                if ($pv['rate'] < $config['rate']) {
                    $config['max_rate'] = $config['rate'];
                    $config['min_rate'] = $pv['rate'];
                }
                if ($pv['rate'] > $config['rate']) {
                    $config['max_rate'] = $pv['rate'];
                }
                $config['range'][] = $pv;
            } else {
                $config = $pv;
            }
            
            $channels = $list[$pv['type']]['channels'] ?? [];
            $channels[] = [
                'id' => (int)$pv['id'],
                'label' => lang($pv['name']),
                'min' => $pv['min'],
                'max' => $pv['max'],
                'fixed' => $pv['fixed'],
                'rate' => $pv['rate'],
            ];
            $list[$pv['type']] = [
                'key' => $key,
                'label' => lang($pv['name']),
                'value' => $pv['type'],
                'config' => $config ?? [],
                'channels' => $channels,
            ];
            if (\App\Services\Payment\RechargeChannelLogoService::supportsDirection($direction)) {
                $logo = $direction === 1 && array_key_exists($pv['type'], $logos)
                    ? $logos[$pv['type']]
                    : ($config['logo'] ?? '');
                $list[$pv['type']]['logo'] = $logo ? (string)Util::ensureUrl($logo) : '';
            }
        }
        $list = array_column($list, null, 'key');
    
        return array_values($list);
    }
    
    //校验是否支持此提现方式
    public static function checkWithdrawChannel($type, $recharge_channel_group_id = 1) {
        $recharge_channel_group_id = $recharge_channel_group_id > 0 ? $recharge_channel_group_id : 1;
        $group = RechargeChannelGroup::query()->find($recharge_channel_group_id);
        $withdrawTypes = $group ? (array)$group->withdraw_type : [];
        if (!in_array($type, $withdrawTypes, true)) {
            return false;
        }
        return self::query()->where('data_type', 2)->where('type', $type)
            ->available()->orderBy('sort')->first() ?: false;
    }
    
    /**
     * 按通道ID取会员可用的充值通道：必须是充值通道、未停用、支付公司未禁用，且类型在会员充值分组内。
     * 不满足时返回 false。
     */
    public static function findRechargeChannel(int $id, $recharge_channel_group_id = 1) {
        $recharge_channel_group_id = $recharge_channel_group_id > 0 ? $recharge_channel_group_id : 1;
        $group = RechargeChannelGroup::query()->find($recharge_channel_group_id);
        $rechargeTypes = $group ? (array)$group->recharge_type : [];
        $row = self::query()->where('data_type', 1)->whereKey($id)->available()->first();
        if (!$row || !in_array($row->type, $rechargeTypes, true)) {
            return false;
        }
        return $row;
    }

    //校验是否支持此充值方式
    public static function checkRechargeChannel($type, $recharge_channel_group_id = 1) {
        $recharge_channel_group_id = $recharge_channel_group_id > 0 ? $recharge_channel_group_id : 1;
        $group = RechargeChannelGroup::query()->find($recharge_channel_group_id);
        $rechargeTypes = $group ? (array)$group->recharge_type : [];
        if (!in_array($type, $rechargeTypes, true)) {
            return false;
        }
        return self::query()->where('data_type', 1)->where('type', $type)
            ->available()->orderBy('sort')->first() ?: false;
    }
}