<?php

namespace app\admin\controller\game;

use Throwable;
use app\common\controller\Backend;
use support\think\Db;
use support\Response;
use Webman\Http\Request as WebmanRequest;

/**
 * 渠道管理
 */
class Channel extends Backend
{
    /**
     * GameChannel模型对象
     * @var object|null
     * @phpstan-var \app\common\model\GameChannel|null
     */
    protected ?object $model = null;

    protected array|string $preExcludeFields = ['id', 'user_count', 'profit_amount', 'create_time', 'update_time'];

    protected array $withJoinTable = ['adminGroup', 'admin'];

    protected string|array $quickSearchField = ['id', 'code', 'name'];

    /**
     * adminTree 为辅助接口，默认权限节点名 game/channel/admintree 往往未在后台录入；
     * 与列表权限 game/channel/index 对齐，避免子管理员已勾「渠道管理」仍 401。
     */
    protected array $noNeedPermission = ['adminTree'];

    protected function initController(WebmanRequest $request): ?Response
    {
        $this->model = new \app\common\model\GameChannel();
        return null;
    }

    /**
     * 渠道-管理员树（父级=渠道，子级=管理员，仅可选择子级）
     */
    public function adminTree(WebmanRequest $request): Response
    {
        $response = $this->initializeBackend($request);
        if ($response !== null) return $response;

        if (!$this->auth->check('game/channel/index')) {
            return $this->error(__('You have no permission'));
        }

        $channels = Db::name('game_channel')
            ->field(['id', 'name', 'admin_group_id'])
            ->order('id', 'asc')
            ->select()
            ->toArray();

        $groupChildrenCache = [];
        $getGroupChildren = function ($groupId) use (&$getGroupChildren, &$groupChildrenCache) {
            if ($groupId === null || $groupId === '') return [];
            if (array_key_exists($groupId, $groupChildrenCache)) return $groupChildrenCache[$groupId];
            $children = Db::name('admin_group')
                ->where('pid', $groupId)
                ->where('status', 1)
                ->column('id');
            $all = [];
            foreach ($children as $cid) {
                $all[] = $cid;
                foreach ($getGroupChildren($cid) as $cc) {
                    $all[] = $cc;
                }
            }
            $groupChildrenCache[$groupId] = $all;
            return $all;
        };

        $tree = [];
        foreach ($channels as $ch) {
            $groupId = $ch['admin_group_id'] ?? null;
            $groupIds = [];
            if ($groupId !== null && $groupId !== '') {
                $groupIds[] = $groupId;
                foreach ($getGroupChildren($groupId) as $gid) {
                    $groupIds[] = $gid;
                }
            }

            $adminIds = [];
            if ($groupIds) {
                $adminIds = Db::name('admin_group_access')
                    ->where('group_id', 'in', array_unique($groupIds))
                    ->column('uid');
            }
            $adminIds = array_values(array_unique($adminIds));

            $admins = [];
            if ($adminIds) {
                $admins = Db::name('admin')
                    ->field(['id', 'username'])
                    ->where('id', 'in', $adminIds)
                    ->order('id', 'asc')
                    ->select()
                    ->toArray();
            }

            $children = [];
            foreach ($admins as $a) {
                $children[] = [
                    'value'      => (string) $a['id'],
                    'label'      => $a['username'],
                    'channel_id' => $ch['id'],
                    'is_leaf'    => true,
                ];
            }

            $tree[] = [
                'value'    => 'channel_' . $ch['id'],
                'label'    => $ch['name'],
                'disabled' => true,
                'children' => $children,
            ];
        }

        return $this->success('', [
            'list' => $tree,
        ]);
    }

    /**
     * 添加（重写：管理员只选顶级组；admin_group_id 后端自动写入）
     * @throws Throwable
     */
    protected function _add(): Response
    {
        if ($this->request && $this->request->method() === 'POST') {
            $data = $this->request->post();
            if (!$data) {
                return $this->error(__('Parameter %s can not be empty', ['']));
            }

            $data = $this->applyInputFilter($data);
            $data = $this->excludeFields($data);

            $adminId = $data['admin_id'] ?? null;
            if ($adminId === null || $adminId === '') {
                return $this->error(__('Parameter %s can not be empty', ['admin_id']));
            }

            // 不允许前端填写，统一后端根据管理员所属“顶级角色组(pid=0)”自动回填
            if (array_key_exists('admin_group_id', $data)) {
                unset($data['admin_group_id']);
            }

            $topGroupId = Db::name('admin_group_access')
                ->alias('aga')
                ->join('admin_group ag', 'aga.group_id = ag.id')
                ->where('aga.uid', $adminId)
                ->where('ag.pid', 0)
                ->value('ag.id');

            if ($topGroupId === null || $topGroupId === '') {
                return $this->error(__('Record not found'));
            }
            $data['admin_group_id'] = $topGroupId;

            if ($this->dataLimit && $this->dataLimitFieldAutoFill) {
                $data[$this->dataLimitField] = $this->auth->id;
            }

            $result = false;
            $this->model->startTrans();
            try {
                if ($this->modelValidate) {
                    $validate = str_replace("\\model\\", "\\validate\\", get_class($this->model));
                    if (class_exists($validate)) {
                        $validate = new $validate();
                        if ($this->modelSceneValidate) {
                            $validate->scene('add');
                        }
                        $validate->check($data);
                    }
                }
                $result = $this->model->save($data);
                $this->model->commit();
            } catch (Throwable $e) {
                $this->model->rollback();
                return $this->error($e->getMessage());
            }
            if ($result !== false) {
                return $this->success(__('Added successfully'));
            }
            return $this->error(__('No rows were added'));
        }

        return $this->error(__('Parameter error'));
    }

    /**
     * 编辑（重写：管理员只选顶级组；admin_group_id 后端自动写入）
     * @throws Throwable
     */
    protected function _edit(): Response
    {
        $pk = $this->model->getPk();
        $id = $this->request ? ($this->request->post($pk) ?? $this->request->get($pk)) : null;
        $row = $this->model->find($id);
        if (!$row) {
            return $this->error(__('Record not found'));
        }

        $dataLimitAdminIds = $this->getDataLimitAdminIds();
        if ($dataLimitAdminIds && !in_array($row[$this->dataLimitField], $dataLimitAdminIds)) {
            return $this->error(__('You have no permission'));
        }

        if ($this->request && $this->request->method() === 'POST') {
            $data = $this->request->post();
            if (!$data) {
                return $this->error(__('Parameter %s can not be empty', ['']));
            }

            $data = $this->applyInputFilter($data);
            $data = $this->excludeFields($data);

            // 不允许前端填写，统一后端根据管理员所属“顶级角色组(pid=0)”自动回填
            if (array_key_exists('admin_group_id', $data)) {
                unset($data['admin_group_id']);
            }

            $nextAdminId = array_key_exists('admin_id', $data) ? $data['admin_id'] : ($row['admin_id'] ?? null);
            if ($nextAdminId !== null && $nextAdminId !== '') {
                $topGroupId = Db::name('admin_group_access')
                    ->alias('aga')
                    ->join('admin_group ag', 'aga.group_id = ag.id')
                    ->where('aga.uid', $nextAdminId)
                    ->where('ag.pid', 0)
                    ->value('ag.id');

                if ($topGroupId === null || $topGroupId === '') {
                    return $this->error(__('Record not found'));
                }
                $data['admin_group_id'] = $topGroupId;
            }

            $result = false;
            $this->model->startTrans();
            try {
                if ($this->modelValidate) {
                    $validate = str_replace("\\model\\", "\\validate\\", get_class($this->model));
                    if (class_exists($validate)) {
                        $validate = new $validate();
                        if ($this->modelSceneValidate) {
                            $validate->scene('edit');
                        }
                        $data[$pk] = $row[$pk];
                        $validate->check($data);
                    }
                }
                $result = $row->save($data);
                $this->model->commit();
            } catch (Throwable $e) {
                $this->model->rollback();
                return $this->error($e->getMessage());
            }
            if ($result !== false) {
                return $this->success(__('Update successful'));
            }
            return $this->error(__('No rows updated'));
        }

        return $this->success('', [
            'row' => $row
        ]);
    }

    /**
     * 查看
     * @throws Throwable
     */
    protected function _index(): Response
    {
        // 如果是 select 则转发到 select 方法，若未重写该方法，其实还是继续执行 index
        if ($this->request && $this->request->get('select')) {
            return $this->select($this->request);
        }

        /**
         * 1. withJoin 不可使用 alias 方法设置表别名，别名将自动使用关联模型名称（小写下划线命名规则）
         * 2. 以下的别名设置了主表别名，同时便于拼接查询参数等
         * 3. paginate 数据集可使用链式操作 each(function($item, $key) {}) 遍历处理
         */
        list($where, $alias, $limit, $order) = $this->queryBuilder();
        $res = $this->model
            ->withJoin($this->withJoinTable, $this->withJoinType)
            ->with($this->withJoinTable)
            ->visible(['adminGroup' => ['name'], 'admin' => ['username']])
            ->alias($alias)
            ->where($where)
            ->order($order)
            ->paginate($limit);

        return $this->success('', [
            'list'   => $res->items(),
            'total'  => $res->total(),
            'remark' => get_route_remark(),
        ]);
    }

    /**
     * 若需重写查看、编辑、删除等方法，请复制 @see \app\admin\library\traits\Backend 中对应的方法至此进行重写
     */
}