// 云对象教程: https://uniapp.dcloud.net.cn/uniCloud/cloud-obj
// jsdoc语法提示教程：https://ask.dcloud.net.cn/docs/#//ask.dcloud.net.cn/article/129
module.exports = {
	_before: function() { // 通用预处理器

	},
	async index(event) {
		// 参数校验，如无参数则不需要
		if (!event.type) {
			return {
				code: 400,
				message: "客户端错误",
				data: {}
			}
		}
		// 业务逻辑

		const db = uniCloud.database();
		let fieldName;
		if (event.type == "跑步") {
			fieldName = "total_running_distance";
		} else {
			fieldName = "total_walking_distance";
		}
		const collection = db.collection('mustgo-user');

		let res = await collection.orderBy(fieldName, "desc").get()

		for (let i = 0; i < res.data.length; i++) {
			if (res.data[i]["_id"] == event.userId) {
				return {
					code: 200,
					message: "查询成功",
					data: {
						totalRunningDistance: res.data[i][fieldName],
						totalRunningRank: i + 1
					}
				}
			}
		}

		// 返回结果
		return {
			code: 500,
			message: "服务器错误",
			data: {}
		}
	},
	async rank(event) {
		const db = uniCloud.database();
		const collection = db.collection('mustgo-user');
		
		let fieldName;
		if (event.type == "跑步") {
			fieldName = "total_running_distance";
		} else {
			fieldName = "total_walking_distance";
		}
		let res = await collection.orderBy(fieldName, "desc").get()
		console.log(res)
		
		let userlist = new Array;
		for (let i = 0; i < res.data.length; i++) {
			let user = {
				"rank": i + 1,
				"icon": res.data[i]["icon"],
				"username": res.data[i]["name"],
				"distance":res.data[i][fieldName]
			}
			userlist.push(user)
		}
		
		//返回数据给客户端
		return {
			"code": 200,
			"message": "成功返回累计排名",
			"data": {
				"userList": userlist
			}
		}
	},
	async save(event) {
		//event为客户端上传的参数
		console.log('event : ', event)
		
		const db = uniCloud.database();
		
		let table, fieldName;
		if (event.type == "跑步") {
			table = "mustgo-running-record";
			fieldName = "total_running_distance";
		} else {
			table = "mustgo-walking-record";
			fieldName = "total_walking_distance";
		}
		let collection = db.collection(table);
		
		if (event.distance < 0.01) { 	
				return {
					code: 400,
					message: "距离过短，不予保存",
					data: {
					}
				}
			}
		
		let res = await collection.add({
			start_date: event.startTime,
			duration: event.duration,
			feelings: "",
			owner_id: event.userId,
			distance: event.distance,
			pace: event.pace,
			start_point: event.startPoint,
			end_point: event.endPoint,
			path_line: event.pathLine
		})
		console.log(res)
		
		let sportId = res.id;
		
		// userID 
		collection = db.collection('mustgo-user');
		res = await collection.where({
			_id: event.userId
		}).get()
		
		// console.log(res)
		
		let cur = res.data[0][fieldName];
		cur += event.distance
		
		if (event.type == "跑步") {
			res = await collection.doc(event.userId).update({
				total_running_distance: cur
			})
		} else {
			res = await collection.doc(event.userId).update({
				total_walking_distance: cur
			})
		}

		
		if (res.updated > 0)
			return {
				code: 200,
				message: "保存成功",
				data: {
					id: sportId
				}
			}
		
		//返回数据给客户端
		return {
				code: 500,
				message: "服务器错误",
				data: {
				}
			}
	},
	async feelings(event) {
		const db = uniCloud.database();
		
		let table;
		if (event.type == '跑步')
			table = 'mustgo-running-record';
		else
			table = 'mustgo-walking-record';
			
		const collection = db.collection(table);
		let res = await collection.doc(event.id).update({
			feelings: event.feeling
		})
		
		if (res.updated > 0) {
			return {
				code: 200,
				message: "保存成功",
				data: {
					
				}
			}
		}
		
		//返回数据给客户端
		return {
			code: 500,
			message: "服务器错误",
			data: {
			}
		}
	}
}