let fs = require('fs');

Meteor.methods({
	"exportMissingSales": async function() {
		try {
			let products = await Products.find({}).fetchAsync();
			let venues = await Venues.find({}).fetchAsync();
			let measures = await Measures.find({}).fetchAsync();
			let productNameMap = {};
			let venueNameMap = {};
			let measureNameMap = {};
			let sales = await Sales.find({createdAt: {$gte: moment.utc("2017-01-28", "YYYY-MM-DD").toDate(), $lt: moment.utc("2017-01-29", "YYYY-MM-DD").toDate()}}).fetchAsync();
			let output = "";
			
			for(let i = 0; i < products.length; i++) {
				productNameMap[products[i]._id] = products[i].name;
			}
			for(let i = 0; i < venues.length; i++) {
				venueNameMap[venues[i]._id] = venues[i].name;
			}
			for(let i = 0; i < measures.length; i++) {
				measureNameMap[measures[i]._id] = measures[i].name;
			}
			for(let i = 0; i < sales.length; i++) {
				let sale = sales[i];
				let saleOutput = '{\n\t"date": ' + sale.date + ',\n\t "amount": ' + sale.amount + ',\n\t "price": ' + sale.price + ',\n\t "venue": "' + venueNameMap[sale.venueId] + '",\n\t "product": "' + productNameMap[sale.productId] + '",\n\t "measure": "' + measureNameMap[sale.measureId] + '",\n\t "createdAt": "' + sale.createdAt + '"\n}';
				
				if(output.length > 0) {
					output += ",\n";
				}
				else {
					output = "[";
				}
				
				output += saleOutput;
			}
			
			fs.writeFile("./exportedMissingSales.json", output, function(err) {
				if(err) console.log(err);
			});
			
			output += "]";
			console.log(output);
		} catch(err) {
			console.log(err);
		}
	}
});