'use strict';

const Service = require('egg').Service;

class PostService extends Service {

    async add(uid, data)
    {
        let mysql = this.app.mysql;

        data.user_id = uid;
        let ret = await mysql.insert("posts", data);
    
        return ret;
    }

    async list(query) {
        let mysql = this.app.mysql;
        let limit = ` limit ${query.page*query.size},${query.size}`;
        let where = "";
        let orderBy = "";

        if( query.cmplyIds ) { //保险公司

        }
        if( query.insDur ) { //保险期间

        }
        if( query.insCategory) //保险分类
        {

        }
        if( query.orderBy == 0 ) { //智能排序

        } else if( query.orderBy == 1 ) { //保额高到低 

        } else if( query.orderBy == 2 ) { //价格高到低 
            
        } else if( query.orderBy == 3 ) { //价格低到高 
            
        }

        let ret = await mysql.query(`select id, title, subtitle, tags, coverage, price from posts ${where} ${orderBy} ${limit}`);
        
        return {page:query.page,size:query.size, list:ret};
    }

    async delete(uid, id) {
      
        let mysql = this.app.mysql;

        let ret = await mysql.query("delete from posts where id=? and user_id=?",[id, uid]);

    
        return ret.affectedRows == 1;
    }

    async update( data ) {

        let mysql = this.app.mysql;
        
        let ret = await mysql.update("posts", data, {where: {id: data.id}});

        return ret.affectedRows == 1;
    }

    async postDetail(uid, id ) {
        let mysql = this.app.mysql;

        console.log( id );

        let ret = await mysql.query("select id,coverage, price, tags, title, html, agree_num, like_num, comment_num from posts where id =?",[id]);
        ret = ret[0];

        //获取返对，收藏，喜欢状态
        let unagree = await mysql.query("select id from post_unagree where post_id=? and user_id=?",[id, uid]);
        unagree =  unagree[0];

        let collected = await mysql.query("select id from post_collect where post_id=? and user_id=?",[id, uid]);
        collected =  collected[0];

        let liked = await mysql.query("select id from post_like where post_id=? and user_id=?",[id, uid]);
        liked =  liked[0];

        ret.unagreed = !!unagree;
        ret.collected = !!collected;
        ret.liked = !!liked;
        
        return ret;
    }

    async agree(id) {

        let mysql = this.app.mysql;
        
        let ret = await mysql.query("update posts set agree_num=agree_num+1 where id=?", [id]);

        return ret.affectedRows == 1;
    }

    async unagree(uid, id, unagree) {

        let mysql = this.app.mysql;

        let ret = await mysql.query("select id from post_unagree where post_id=? and user_id=?", [id, uid]);
        if( unagree == 1 ) {
            if( ret[0] ) {
                return true;
            }

            ret = await mysql.insert("post_unagree",{post_id: id, user_id: uid});

            return ret.affectedRows == 1;
        }
       
        ret = await mysql.query("delete from post_unagree where post_id=? and user_id=? ",[id, uid]);

        return ret.affectedRows == 1;
    }


    async like(uid, id, like) {

        let mysql = this.app.mysql;
        let ret;

        if( like == 1 ) {
            ret = await mysql.query("select * from post_like where post_id=? and user_id=?",[id, uid]);
            ret = ret[0];
            if( !ret )
            {
                await mysql.query("update posts set like_num=like_num+1 where id=?", [id]);
            
                ret = await mysql.insert("post_like", {post_id:id, user_id: uid});
            }
        } else {
            ret = await mysql.query("delete from post_like where post_id =? and user_id = ?",[id, uid]);
            if( ret.affectedRows == 1 ) {
                await mysql.query("update posts set like_num=like_num-1 where id=?", [id]);
            }
        }
        console.log( ret );

        return  true;
    }

    async collect(uid, id, collect) {
        let mysql = this.app.mysql;

        let ret = await mysql.query("select id from post_collect where post_id=? and user_id=?", [id, uid]);
        if( collect == 1 ) {
            if( ret[0] ) {
                return true;
            }

            ret = await mysql.insert("post_collect",{post_id: id, user_id: uid});

            return ret.affectedRows == 1;
        }
       
        ret = await mysql.query("delete from post_collect where post_id=? and user_id=? ",[id, uid]);

        return ret.affectedRows == 1;
    }
}

module.exports = PostService;