const db = uniCloud.database();
const _ = db.command;
const uniID = require('uni-id-common');
module.exports = {
	_before: function () { // 通用预处理器
		this.uniID = uniID.createInstance({
			context: this.getClientInfo()
		});
	},
	async getIsFollow(query) {
		try {
			const {
				uid,
				fid
			} = query;
			let isFollow = false;
			console.log(uid)
			console.log(fid)
			const res = await db.collection("follow").where({
				uid: uid,
				fid: fid
			})
			.count();
			console.log(res.total);
			if (res.total > 0) {
				isFollow = true;
			}
			return {
				code: 200,
				isFollow: isFollow
			}
		} catch(e) {
			return {
				code: 500,
				msg: e.message
			}
		}
	},
	async follow(query) {
		try {
			const payload = await this.uniID.checkToken(this.getUniIdToken());
			if (payload.errCode) throw new Error('登录状态失效，请重新登录');
			const uid = payload.uid; // 以服务端令牌为准，忽略客户端传入
			const fid = query.fid;
			const res = await db.collection("follow").where({
				uid: uid,
				fid: fid
			}).count();
			if (res.total > 0) {
				return {
					code: 201,
					msg: "已关注"
				}
			} else {
				let dateTime = new Date();
				const add_res = await db.collection("follow").add({
					uid: uid,
					fid: fid,
					create_time: dateTime
				})
				console.log(add_res)
				return {
					code: 200,
					data: add_res
				}
			}
		} catch(e) {
			return {
				code: 500,
				msg: e.message
			}
		}
	},
	async reFollow(query) {
		try {
			const payload = await this.uniID.checkToken(this.getUniIdToken());
			if (payload.errCode) throw new Error('登录状态失效，请重新登录');
			const uid = payload.uid; // 以服务端令牌为准，忽略客户端传入
			const fid = query.fid;
			const res = await db.collection("follow").where({
				uid: uid,
				fid: fid
			}).count();
			if (res.total == 0) {
				return {
					code: 201,
					msg: "未关注"
				}
			} else {
				const re_res = await db.collection("follow").where({
					uid: uid,
					fid: fid
				}).remove();
				console.log(re_res)
				return {
					code: 200,
					data: re_res
				}
			}
			
		} catch(e) {
			return {
				code: 500,
				msg: e.message
			}
		}
	}
}