<?php

namespace app\api\controller;

use think\Db;

/**
 * 消息中心（用户 / 师傅共用）
 */
class Message extends Base
{
    /**
     * 消息列表
     * @ApiParams (name="type", type="string", required=false, description="user|master，默认 user")
     * @ApiParams (name="category", type="string", required=false, description="all|order|system|audit|remind")
     */
    public function index()
    {
        $type = $this->request->param('type', 'user');
        $type = $type === 'master' ? 'master' : 'user';
        $category = $this->request->param('category', 'all');
        $page = max(1, (int)$this->request->param('page', 1));
        $limit = min(50, max(1, (int)$this->request->param('limit', 20)));

        $receiveId = $this->receiveId($type);

        $build = function () use ($type, $receiveId, $category) {
            $q = Db::name('message')->where('receive_type', $type)->where('receive_id', $receiveId);
            if ($category !== 'all' && $category !== '') {
                $q->where('type', $category);
            }
            return $q;
        };

        $total = $build()->count();
        $list = $build()->order('id desc')->page($page, $limit)->select();

        foreach ($list as &$row) {
            $row['time_text'] = date('m-d H:i', (int)$row['createtime']);
            $row['is_read'] = (int)$row['is_read'];
        }
        unset($row);

        $this->success('', [
            'list'     => $list,
            'total'    => (int)$total,
            'unread'   => $this->unreadCount($type, $receiveId),
            'page'     => $page,
        ]);
    }

    /**
     * 标记单条已读
     * @ApiMethod (POST)
     */
    public function read()
    {
        $id = (int)$this->request->post('id');
        $type = $this->request->post('type', 'user') === 'master' ? 'master' : 'user';
        $receiveId = $this->receiveId($type);

        $row = Db::name('message')->where('id', $id)->where('receive_type', $type)->where('receive_id', $receiveId)->find();
        if (!$row) {
            $this->error('消息不存在');
        }
        Db::name('message')->where('id', $id)->update(['is_read' => 1]);
        $this->success('已读');
    }

    /**
     * 全部标记已读
     * @ApiMethod (POST)
     */
    public function readAll()
    {
        $type = $this->request->post('type', 'user') === 'master' ? 'master' : 'user';
        $receiveId = $this->receiveId($type);
        $affected = Db::name('message')
            ->where('receive_type', $type)->where('receive_id', $receiveId)->where('is_read', 0)
            ->update(['is_read' => 1]);
        $this->success('已全部标记为已读', ['count' => (int)$affected]);
    }

    /**
     * 未读数（供 Tab 角标）
     */
    public function unread()
    {
        $type = $this->request->param('type', 'user') === 'master' ? 'master' : 'user';
        $this->success('', ['unread' => $this->unreadCount($type, $this->receiveId($type))]);
    }

    /**
     * 消息归属ID：用户=uid，师傅=master.id
     */
    protected function receiveId($type)
    {
        if ($type === 'master') {
            $master = $this->masterInfo();
            return $master ? (int)$master['id'] : 0;
        }
        return $this->uid();
    }

    protected function unreadCount($type, $receiveId)
    {
        if (!$receiveId) {
            return 0;
        }
        return (int)Db::name('message')
            ->where('receive_type', $type)->where('receive_id', $receiveId)->where('is_read', 0)
            ->count();
    }
}