Attacks are now pending

server/combat.js

@@ -5,10 +5,99 @@ require('dotenv').config();
 let { log } = require('../common/utilities.js');
 
 const attackRequest = (connection) => (req, res) => {
-	res.status(400).write(log('Not yet implemented'));
-	res.end();
+	//verify the attacker's credentials
+	let query = 'SELECT accountId FROM sessions WHERE accountId IN (SELECT id FROM accounts WHERE username = ?) AND token = ?;';
+	connection.query(query, [req.body.attacker, req.body.token], (err, results) => {
+		if (err) throw err;
+
+		if (results.length !== 1) {
+			res.status(400).write(log('Invalid attack credentials', req.body.attacker, req.body.defender, req.body.token));
+			res.end();
+			return;
+		}
+
+		let attackerId = results[0].accountId;
+
+		//verify that the defender exists
+		let query = 'SELECT id FROM accounts WHERE username = ?;';
+		connection.query(query, [req.body.defender], (err, results) => {
+			if (err) throw err;
+
+			if (results.length !== 1) {
+				res.status(400).write(log('Invalid defender credentials', req.body.attacker, req.body.defender));
+				res.end();
+				return;
+			}
+
+			let defenderId = results[0].id;
+
+			//verify that the attacker has enough soldiers
+			let query = 'SELECT soldiers FROM profiles WHERE accountId = ?;';
+			connection.query(query, [attackerId], (err, results) => {
+				if (err) throw err;
+
+				if (results[0].soldiers <= 0) {
+					res.status(400).write(log('Not enough soldiers', req.body.attacker, req.body.defender, results[0].soldiers));
+					res.end();
+					return;
+				}
+
+				let attackingUnits = results[0].soldiers;
+
+				//verify that the attacker is not already attacking someone
+				isAttacking(connection, req.body.attacker, (isAttacking) => {
+					if (isAttacking) {
+						res.status(400).write(log('You are already attacking someone', req.body.attacker, req.body.defender));
+						res.end();
+						return;
+					}
+
+					//create the pending attack value
+					let query = 'INSERT INTO pendingCombat (eventTime, attackerId, defenderId, attackingUnits) VALUES (DATE_ADD(CURRENT_TIMESTAMP(), INTERVAL 10 * ? SECOND), ?, ?, ?);';
+					connection.query(query, [attackingUnits, attackerId, defenderId, attackingUnits], (err) => {
+						if (err) throw err;
+
+						res.status(200).write(log(`Your soldiers are on their way to attack ${req.body.defender}`, req.body.attacker, req.body.defender));
+						res.end();
+					});
+				});
+			});
+		});
+	});
+}
+
+const attackStatusRequest = (connection) => (req, res) => {
+	isAttacking(connection, req.body.username, (isAttacking) => {
+		res.status(200).write(log(isAttacking ? 'attacking' : 'idle', req.body.username));
+		res.end();
+	});
+}
+
+const isAttacking = (connection, username, cb) => {
+	let query = 'SELECT * FROM pendingCombat WHERE attackerId IN (SELECT id FROM accounts WHERE username = ?);';
+	connection.query(query, [username], (err, results) => {
+		if (err) throw err;
+
+		return cb(results.length !== 0);
+	});
 }
 
 module.exports = {
-	attackRequest: attackRequest
-}
+	attackRequest: attackRequest,
+	attackStatusRequest: attackStatusRequest
+}
+
+/*
+> You can attack another player using your soldiers (it doesn't work without soldiers).
+* Doing so takes time, up to 10 seconds for every soldier you have.
+* Combat takes place at the end of the time delay, at which point you can attack people again (after reloading the page).
+> While attacking, you are undefended.
+* While undefended, your recruits act as combatants, otherwise your soldiers do.
+* The chance of success is determined by the ratio of each side's combatant strength.
+* Recruits have a strength equal to 0.25 times that of a soldier.
+* On a success, you steal 10% of the target's gold. On a failure, you steal 2% of the target's gold.
+* The attacking force will lose a percentage, rounded down, of their units - 5% on a success, 10% on a failure (edit: excluding the first 10 units).
+* If the server resets (which happens alot) combat still progresses as expected.
+* All combat is logged and presented to the player.
+*/
+