<?php

namespace App\Service\business;

use App\BaseApp\BaseService;
use App\Models\business\EnterpriseModel;
use App\Models\business\WxTemplateModel;
use App\Models\business\WxUserModel;
use App\Service\common\MediaUrlService;
use Exception;
use Psr\Container\ContainerExceptionInterface;
use Psr\Container\NotFoundExceptionInterface;

/**
 * 微信用户管理
 *
 * 三件事：认代理商（is_p）、给代理商设价格倍率（price_number）、把用户绑到企业；
 * 另可给经销商绑定专属装修模板（template_code）。
 * session_key 属于服务端凭据，selectField 里绝不带上。
 */
class WxUserService extends BaseService
{
    private MediaUrlService $media;

    public function __construct()
    {
        parent::__construct();
        $this->model = WxUserModel::class;
        $this->selectField = [
            'id', 'open_id', 'phone', 'nick_name', 'avatar',
            'show_price', 'is_p', 'pid', 'enterprise_id', 'price_number', 'template_code',
            'created_at', 'updated_at',
        ];
        $this->queryField = [
            'nick_name' => 'like',
            'phone' => 'like',
            'is_p' => '=',
            'show_price' => '=',
            'enterprise_id' => '=',
        ];
        $this->media = MediaUrlService::getInstance();
    }

    /**
     * @throws ContainerExceptionInterface
     * @throws NotFoundExceptionInterface
     */
    public function list(): array
    {
        $this->with = ['enterprise'];
        $result = $this->getPageList();
        foreach ($result['items'] as &$item) {
            $item['enterprise_name'] = $item['enterprise']['name'] ?? '';
            unset($item['enterprise']);
            $item['avatar'] = $this->media->toPublic($item['avatar'] ?? '');
        }
        unset($item);
        return $result;
    }

    public function option(): mixed
    {
        $this->optionField = ['id', 'nick_name as name', 'phone'];
        return $this->getOption();
    }

    /**
     * 详情：带所属企业、上级代理商与下级数量
     * @throws Exception
     */
    public function detail($id): mixed
    {
        $this->with = ['enterprise'];
        $info = $this->getDetail($id);
        $info->avatar = $this->media->toPublic($info->avatar);
        $info->enterprise_name = $info->enterprise->name ?? '';
        $info->parent_name = $info->pid > 0
            ? (string) (WxUserModel::where('id', $info->pid)->value('nick_name') ?? '')
            : '';
        $info->child_count = WxUserModel::where('pid', $info->id)->where('deleted_at', 0)->count();
        return $info;
    }

    /**
     * 后台不创建微信用户（用户只能由小程序授权登录产生）
     * @throws Exception
     */
    public function create($params): mixed
    {
        return $this->utils->errorThrow('微信用户由小程序授权登录产生，后台不支持新建');
    }

    /**
     * 后台只允许改这几项，避免把 open_id 之类的身份字段改花
     * @throws Exception
     */
    public function update($id, $params): mixed
    {
        $allowed = ['nick_name', 'phone', 'enterprise_id', 'show_price', 'price_number', 'is_p', 'template_code'];
        $payload = array_intersect_key($params, array_flip($allowed));
        if (empty($payload)) {
            $this->utils->errorThrow('没有可更新的字段');
        }
        if (array_key_exists('price_number', $payload)) {
            $payload['price_number'] = $this->normalizeMultiplier($payload['price_number']);
        }
        if (array_key_exists('template_code', $payload)) {
            $payload['template_code'] = trim((string) $payload['template_code']);
        }
        return $this->save($id, $payload);
    }

    /**
     * @throws Exception
     */
    public function delete($id): mixed
    {
        return $this->del(is_array($id) ? $id : [$id]);
    }

    /**
     * 切换代理商身份
     *
     * 老接口是「翻转」语义（不传目标值，后端读当前值取反），前端的开关点快了就会和后端打反。
     * 这里改成显式传 is_p，同时保留不传时的翻转以兼容老调用。
     * @throws Exception
     */
    public function updateUserIsP($id, mixed $isP = null): bool
    {
        $user = WxUserModel::where('id', $id)->where('deleted_at', 0)->first();
        if (empty($user)) {
            $this->utils->errorThrow('用户不存在');
        }

        $target = $isP === null || $isP === ''
            ? ((int) $user->is_p === 1 ? 0 : 1)
            : (int) $isP;

        // 认成代理商就默认可见价格、倍率归 1；取消代理商则收回价格可见性，并清空专属模板
        $data = $target === 1
            ? ['is_p' => 1, 'show_price' => 1, 'price_number' => 1]
            : ['is_p' => 0, 'show_price' => 0, 'price_number' => 1, 'template_code' => ''];
        $data['updated_at'] = time();

        WxUserModel::where('id', $id)->update($data);
        return true;
    }

    /**
     * 给经销商绑定专属装修模板（空字符串=跟随品牌默认）
     * @throws Exception
     */
    public function bindTemplate($id, mixed $templateCode): bool
    {
        $user = WxUserModel::where('id', $id)->where('deleted_at', 0)->first();
        if (empty($user)) {
            $this->utils->errorThrow('用户不存在');
        }
        if ((int) $user->is_p !== 1) {
            $this->utils->errorThrow('仅经销商可绑定专属模板');
        }
        $code = trim((string) $templateCode);
        if ($code !== '') {
            $exists = WxTemplateModel::where('code', $code)
                ->where('deleted_at', 0)
                ->where('status', 0)
                ->exists();
            if (!$exists) {
                $this->utils->errorThrow('模板不存在或已停用');
            }
        }
        WxUserModel::where('id', $id)->update([
            'template_code' => $code,
            'updated_at' => time(),
        ]);
        return true;
    }

    /**
     * 设置价格倍率（同时打开价格可见）
     * @throws Exception
     */
    public function updateShowPrice($id, mixed $number): bool
    {
        $user = WxUserModel::where('id', $id)->where('deleted_at', 0)->first();
        if (empty($user)) {
            $this->utils->errorThrow('用户不存在');
        }
        $multiplier = $this->normalizeMultiplier($number);
        WxUserModel::where('id', $id)->update([
            'show_price' => 1,
            'price_number' => $multiplier,
            'updated_at' => time(),
        ]);
        return true;
    }

    /**
     * 单独控制价格可见性（不动倍率）
     * @throws Exception
     */
    public function updateShowPriceStatus($id, mixed $showPrice): bool
    {
        $user = WxUserModel::where('id', $id)->where('deleted_at', 0)->first();
        if (empty($user)) {
            $this->utils->errorThrow('用户不存在');
        }
        WxUserModel::where('id', $id)->update([
            'show_price' => (int) $showPrice === 1 ? 1 : 0,
            'updated_at' => time(),
        ]);
        return true;
    }

    /**
     * 绑定企业
     * @throws Exception
     */
    public function bindUser($id, $enterpriseId): bool
    {
        $enterpriseId = (int) $enterpriseId;
        if (!WxUserModel::where('id', $id)->where('deleted_at', 0)->exists()) {
            $this->utils->errorThrow('用户不存在');
        }
        if ($enterpriseId > 0 && !EnterpriseModel::where('id', $enterpriseId)->where('deleted_at', 0)->exists()) {
            $this->utils->errorThrow('企业不存在');
        }
        WxUserModel::where('id', $id)->update([
            'enterprise_id' => $enterpriseId,
            'updated_at' => time(),
        ]);
        return true;
    }

    /**
     * 该代理商名下的下级用户
     */
    public function children(int $id): array
    {
        return WxUserModel::where('pid', $id)
            ->where('deleted_at', 0)
            ->orderBy('id', 'desc')
            ->get(['id', 'nick_name', 'phone', 'price_number', 'show_price', 'created_at'])
            ->toArray();
    }

    /**
     * 倍率兜底，0 或负数会把价格直接乘成 0
     */
    private function normalizeMultiplier(mixed $number): string
    {
        if (!is_numeric($number) || (float) $number <= 0) {
            return '1';
        }
        return (string) $number;
    }
}