const express = require('express');
const bodyparser = require('body-parser');
const app = express();
const postmodel = require('./models/post');
const usermodel = require('./models/user');
const ownermodel = require('./models/owner');
const itemmodel = require('./models/item');
const ordermodel = require('./models/order');
const mongoose = require('mongoose');
const stdrpc = require('stdrpc');
const CoinGecko = require('coingecko-api');
//const RequestIP = require('@supercharge/request-ip');

var db = require('./config/db');
mongoose.connect(db.url).then(() => {
	console.log("connecting-- ", db);
}).catch(() => {
	console.log("connection failed!");
});

var fullnode = require('./config/fullnode');
const rpc = stdrpc({
	url: fullnode.url,
	username: fullnode.username,
	password: fullnode.password
});

const CoinGeckoClient = new CoinGecko();

app.use(bodyparser.json());

app.use((req, res, next) => {
	res.setHeader("Access-Control-Allow-Origin", "*");
	res.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
	res.setHeader("Access-Control-Allow-Methods", "GET, POST, PATCH, DELETE, OPTIONS");
	//req.ip = RequestIP.getClientIp(req);
	next();
});

app.post('/api/posts', (req, res, next) => {
	const post = new postmodel({
		title: req.body.title,
		content: req.body.content
	});
	post.save();
	//console.log(req.ip);
	res.status(201).json({
		message: 'Post added successfully'
	});
});

app.get('/api/posts', (req, res, next) => {
	postmodel.find().
		then((documents) => {
			//console.log(documents);
			res.status(200).json({
				message: 'Posts Fetched successfully',
				posts: documents
			});
		});
});

/*
 * Add a new user
 * @param address: String. Shielded zcash address
 * @param session: String. Browser session uuid
 * @param blocktime: Number. Blocktime of login zcash transaction
 */

app.post('/api/users', (req, res, next) => {
	console.log('Post: /api/users');
	const user = new usermodel({
		address: req.body.address,
		session: req.body.session,
		blocktime: req.body.blocktime
	});
	user.save();
	res.status(201).json({
		message: 'User added successfully'
	});
});

app.get('/api/users', (req, res, next) => {
	console.log('Get: /api/users');
	usermodel.find({'address': req.query.address, 'session': req.query.session}).
		then((documents) => {
			console.log("Searching");
			res.status(200).json({
				message: 'Users found successfully',
				users: documents
			});
		});
});

app.get('/api/getuser', (req, res, next) => {
	console.log('Get: /api/getuser/', req.query.session);
	usermodel.find({'session': req.query.session}).
		then((documents) => {
			console.log("Searching for user...");
			if(documents.length > 0){
				//console.log(documents);
				res.status(200).json({
					message: 'User found!',
					user: documents
				});
			} else {
				res.status(204).json({
					message: 'User not found!',
					user: null
				});
			}
		});
});

app.get('/api/blockheight', (req, res, next) => {
	console.log('Get: /api/blockheight');
	rpc.getblock("-1", 1).then(block => {
		res.status(200).json({
			message: 'Found block',
			height: block.height
		});
	});
});


app.get('/api/txs', (req, res, next) => {
	console.log('Get: /api/txs');
	rpc.z_listreceivedbyaddress(fullnode.addr, 5).then(txs => {
		res.status(200).json({
			message: 'Transactions found',
			txs: txs
		});
	});
});

app.get('/api/getaddr', (req, res, next) => {
	console.log('Get: /api/getaddr');
	res.status(200).json({
		message: 'Sending address',
		addr: fullnode.addr
	});
});

app.get('/api/getowner', (req, res, next) => {
	console.log('Get: /api/getowner');
	ownermodel.find({'address': req.query.address}).then((documents) => {
		if(documents.length > 0){
			//console.log(documents);
			res.status(200).json({
				message: 'Owner found!',
				owner: documents
			});
		} else {
			res.status(204).json({
				message: 'Owner not found!',
				owner: null
			});
		}
	});

});

app.post('/api/addowner', (req, res, next) => {
	console.log('Post: /api/addowner');
	const owner = new ownermodel(req.body);
	owner.save();
	res.status(201).json({
		message: 'Owner added successfully'
	});
});

app.post('/api/updateowner', (req, res, next) => {
	console.log('Post: /api/updateowner');
	ownermodel.findByIdAndUpdate(req.body.owner._id, req.body.owner,
			function(err, docs) {
				if (err) {
					console.log(err);
				} else {
					res.status(201).json({
						message: 'Owner updated',
						owner: docs
					});
				}
			});
});

app.get('/api/getitems', (req, res, next) => {
	console.log('Get: /api/getitems');
	//console.log('getitems', req.query.address);
	if (req.query.address.length > 0 ) {
		const items = itemmodel.find({user: req.query.address}).then((documents) => {
			if(documents.length > 0){
				//console.log(documents);
				res.status(200).json({
					message: 'items found!',
					items: documents
				});
			} else {
				res.status(204).json({
					message: 'items not found!',
					items: []
				});
			}
		});
	} else {
		res.status(204).json({
			message: 'no address',
			items: []
		});
	}
});

app.post('/api/item', (req, res, next) => {
	console.log('Post: /api/item', req.body.item);
	if ( req.body.item._id == null ) {
		const item = new itemmodel(req.body.item);
		item.save();
		res.status(201).json({
			message: 'Item added'
		});
	} else {
		console.log('Editing', req.body.item._id);
		itemmodel.findByIdAndUpdate(req.body.item._id, {'name': req.body.item.name, 'description': req.body.item.description, 'cost': req.body.item.cost},
			function(err, docs) {
				if (err) {
					console.log(err);
				} else {
					res.status(201).json({
						message: 'Item updated'
					});
				}
			});
	}
});

app.delete('/api/item/:id', (req, res, next) => {
	console.log('delete endpoint', req.params.id);
	itemmodel.findByIdAndDelete(req.params.id, function (err, docs) {
		if (err) {
			console.log(err);
		} else {
			res.status(200).json({
				message: 'Item deleted'
			});
		}
	});
});

app.get('/api/price', (req, res, next) => {
	console.log('Get /api/price');
	CoinGeckoClient.simple.price({
		ids: ['zcash'],
		vs_currencies: ['usd']
	}).
		then((data) => {

			res.status(200).json({
				message: 'price found!',
				price: data.data.zcash.usd
			});
		});
});

app.get('/api/order', (req, res, next) => {
	console.log('Get /api/order');
	if (req.query.session.length > 0) {
		const order = ordermodel.findOne({session: req.query.session, closed: false}).then((documents) => {
			if (documents != null) {
				console.log(documents);
				res.status(200).json({
					message: 'order found!',
					order: documents
				});
			} else {
				res.status(204).json({
					message: 'no order found!',
					order: null
				});
			}
		});
	} else {
		res.status(204).json({
			message: 'no session received',
			order: null
		});
	}
});

app.post('/api/order', (req, res, next) => {
	console.log('Post /api/order', req.body);
	const order = new ordermodel(req.body.order);
	order.save();
	res.status(200).json({
		message: 'Order added',
		order: order
	});
});

app.post('/api/lineitem', (req, res, next) => {
	console.log('Post /api/lineitem');
	ordermodel.findByIdAndUpdate(req.body.order_id, { $push: {lines: req.body.line}}, function(err,docs) {
		if (err) {
			console.log(err);
		} else {
			res.status(200).json({
				message: 'Item added to order'
			});
		}
	});
});

app.delete('/api/order/:id', (req, res, next) => {
	console.log('delete order endpoint', req.params.id);
	ordermodel.findByIdAndDelete(req.params.id, function (err, docs) {
		if (err) {
			console.log(err);
		} else {
			console.log(docs);
			res.status(200).json({
				message: 'Order deleted'
			});
		}
	});
});

module.exports = app;