<?php
declare(strict_types=1);
namespace app\backend\controller;

use think\Request;
use think\facade\Db;
use think\db\exception\DbException;
use think\exception\ValidateException;
use ywxapp\controller\BackendBase;
use ywxapp\model\Notice as NoticeModel;
use app\backend\validate\Notice as NoticeValidate;

/**
 * 站点公告管理
 */
class Notice extends BackendBase
{
    protected $noNeedLogin = [];
    protected $noNeedVerify = [];

    protected function initialize()
    {
        $this->model = new NoticeModel();
        NoticeModel::ensureSchema();
    }

    public function index()
    {
        $page  = $this->request->param('page/d', 1);
        $limit = $this->request->param('limit/d', 15);
        $title = $this->request->param('title', '');
        $type  = $this->request->param('type/d', 0);

        if ($this->request->isAjax()) {
            $query = $this->model->newQuery();
            if ($title !== '') {
                $query->where('title', 'like', '%' . $title . '%');
            }
            if ($type > 0) {
                $query->where('type', $type);
            }
            $list = $query->order('is_top', 'desc')
                ->order('sort', 'desc')
                ->order('id', 'desc')
                ->paginate(['page' => $page, 'list_rows' => $limit]);
            $this->result->setCount($list->total())->success($list->items());
        }
        return $this->fetch();
    }

    public function save()
    {
        if (! $this->request->isPost()) {
            $this->result->error('请求方式错误', 405);
        }
        $params = $this->request->only(
            ['title', 'content', 'author', 'type', 'is_top', 'start_time', 'end_time', 'sort', 'status'],
            'post'
        );
        // 未填写发布人时取当前登录管理员
        if (empty($params['author']) && isset($this->auth->info['username'])) {
            $params['author'] = $this->auth->info['username'];
        }
        $params = $this->parseTime($params);
        try {
            validate(NoticeValidate::class)->check($params);
            $this->model->create($params);
            $this->result->success('', '添加成功');
        } catch (ValidateException $e) {
            $this->result->error($e->getMessage());
        } catch (DbException $e) {
            $this->result->error('添加失败: ' . $e->getMessage(), 2);
        }
    }

    /**
     * 将前端传来的日期字符串转为时间戳（空则置 0=长期）
     */
    private function parseTime(array $params): array
    {
        foreach (['start_time', 'end_time'] as $f) {
            if (isset($params[$f])) {
                $params[$f] = $params[$f] === '' || $params[$f] === null
                    ? 0
                    : (is_numeric($params[$f]) ? (int)$params[$f] : strtotime($params[$f]));
            } else {
                $params[$f] = 0;
            }
        }
        return $params;
    }

    public function edit($id = null)
    {
        $id = $id ?: $this->request->param('id');
        $info = $this->model->find($id);
        if (! $info) {
            $this->result->error('记录不存在', 404);
        }
        // 时间戳转日期字符串，方便表单回填
        $data = $info->toArray();
        $data['start_time'] = ! empty($data['start_time']) ? date('Y-m-d H:i:s', $data['start_time']) : '';
        $data['end_time']   = ! empty($data['end_time']) ? date('Y-m-d H:i:s', $data['end_time']) : '';
        $this->result->success(['info' => $data]);
    }

    public function update()
    {
        if (! ($this->request->isAjax() && $this->request->isPut())) {
            $this->result->error('请求方式错误', 405);
        }
        $params = $this->request->param();
        $id = $params['id'] ?? null;
        $info = $this->model->find($id);
        if (! $info) {
            $this->result->error('记录不存在', 404);
        }
        $statusOnly = isset($params['status'])
            && count(array_diff(array_keys($params), ['id', 'status'])) === 0;
        if (! $statusOnly) {
            $params = $this->parseTime($params);
            try {
                validate(NoticeValidate::class)->check($params);
            } catch (ValidateException $e) {
                $this->result->error($e->getMessage());
            }
        } else {
            $params = $this->parseTime($params);
        }
        $info->save($params);
        $this->result->success($info, '更新成功');
    }

    public function recyclebin()
    {
        $page  = $this->request->param('page/d', 1);
        $limit = $this->request->param('limit/d', 15);
        if ($this->request->isAjax()) {
            $list = $this->model->onlyTrashed()
                ->order('sort', 'desc')
                ->paginate(['page' => $page, 'list_rows' => $limit]);
            $this->result->setCount($list->total())->success($list->items());
        }
        return $this->fetch('notice/index');
    }

    public function delete()
    {
        if ($this->request->isAjax() && $this->request->isDelete()) {
            $ids = $this->request->param('ids', '');
            $force = $this->request->param('force', false);
            if (empty($ids)) {
                $this->result->error('请选择要删除的数据');
            }
            $idsArray = array_filter(explode(',', $ids), 'is_numeric');
            if (empty($idsArray)) {
                $this->result->error('参数错误');
            }
            try {
                Db::transaction(function () use ($idsArray, $force) {
                    if ($force) {
                        $this->model->onlyTrashed()->whereIn('id', $idsArray)->select()
                            ->each(function ($item) { $item->force()->delete(); });
                    } else {
                        $this->model->destroy($idsArray);
                    }
                });
                $this->result->success();
            } catch (\think\exception\HttpResponseException $e) {
                throw $e;
            } catch (\Exception $e) {
                $this->result->error('删除失败: ' . ($e->getMessage() ?: $e->__toString()), 500);
            }
        }
    }

    public function restore($ids = '')
    {
        if ($this->request->isAjax() && $this->request->isPost()) {
            $ids = $this->request->param('ids', '');
            if (empty($ids)) {
                $this->result->error('请选择要恢复的数据');
            }
            $idsArray = array_filter(explode(',', $ids), 'is_numeric');
            Db::startTrans();
            try {
                $this->model->withTrashed()->where('id', 'in', $idsArray)->select()
                    ->each(function ($item) { $item->restore(); });
                Db::commit();
                $this->result->success('恢复成功');
            } catch (DbException $e) {
                Db::rollback();
                $this->result->error('恢复失败: ' . $e->getMessage());
            }
        }
    }
}