<?php

namespace App\Http\Api;

use App\Models\Channel;
use App\Models\Sentence;
use App\Models\SentHistory;
use Illuminate\Support\Facades\Redis;
use Illuminate\Support\Str;

class SentenceApi
{
    protected $auth = false;

    protected $channel = null;

    public function auth($channelId, $userId)
    {
        $channel = Channel::where('uid', $channelId)->first();
        if (! $channel) {
            return false;
        }
        if ($channel->owner_uid !== $userId) {
            // 判断是否为协作
            $power = ShareApi::getResPower($userId, $channel->uid, 2);
            if ($power < 20) {
                return false;
            }
        }
        $this->channel = $channel;
        $this->auth = true;

        return true;
    }

    public function store($sent, $user, $copy = false)
    {
        $row = Sentence::firstOrNew([
            'book_id' => $sent['book_id'],
            'paragraph' => $sent['paragraph'],
            'word_start' => $sent['word_start'],
            'word_end' => $sent['word_end'],
            'channel_uid' => $this->channel->uid,
        ], [
            'id' => app('snowflake')->id(),
            'uid' => Str::uuid(),
        ]);
        $row->content = $sent['content'];
        $row->strlen = mb_strlen($sent['content'], 'UTF-8');
        $row->language = $this->channel->lang;
        $row->status = $this->channel->status;
        if ($copy) {
            // 复制句子，保留原作者信息
            $row->editor_uid = $sent['editor_uid'];
            $row->acceptor_uid = $user['user_uid'];
            $row->pr_edit_at = $sent['updated_at'];
        } else {
            $row->editor_uid = $user['user_uid'];
            $row->acceptor_uid = null;
            $row->pr_edit_at = null;
        }
        $row->create_time = time() * 1000;
        $row->modify_time = time() * 1000;
        $row->save();

        // 保存历史记录
        if ($copy) {
            $this->saveHistory($row->uid, $sent['editor_uid'], $sent['content']);
        } else {
            $this->saveHistory($row->uid, $user['user_uid'], $sent['content']);
        }
        // 清除缓存
        $sentId = "{$sent['book_id']}-{$sent['paragraph']}-{$sent['word_start']}-{$sent['word_end']}";
        $hKey = "/sentence/res-count/{$sentId}/";
        Redis::del($hKey);
    }

    private function saveHistory($uid, $editor, $content)
    {
        $newHis = new SentHistory;
        $newHis->id = app('snowflake')->id();
        $newHis->sent_uid = $uid;
        $newHis->user_uid = $editor;
        if (empty($content)) {
            $newHis->content = '';
        } else {
            $newHis->content = $content;
        }

        $newHis->create_time = time() * 1000;
        $newHis->save();
    }
}