From 186049b3ed33f025eeb87eb34c19a28e1d5ba70a Mon Sep 17 00:00:00 2001
From: Sebastian Reichel <sre@ring0.de>
Date: Tue, 2 Oct 2012 01:05:51 +0200
Subject: restructure code, switch from GTK to Web based UI

 - move barcode generation scripts into generation/
 - move code to src/
 - remove database analysis from invoice/graph
 - put database creation sql files into sql/
 - remove glade builder file
 - add new templates/ directory, which contains files
   used by the Web-UI
---
 src/main.vala | 113 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 src/main.vala

(limited to 'src/main.vala')

diff --git a/src/main.vala b/src/main.vala
new file mode 100644
index 0000000..74736d2
--- /dev/null
+++ b/src/main.vala
@@ -0,0 +1,113 @@
+/* Copyright 2012, Sebastian Reichel <sre@ring0.de>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+public Device dev;
+public Database db;
+
+public static int main(string[] args) {
+	if(args.length < 2) {
+		stderr.printf("%s <device>\n", args[0]);
+		return 1;
+	}
+
+	dev = new Device(args[1], 9600, 8, 1);
+	db = new Database("shop.db");
+
+	dev.received_barcode.connect((data) => {
+		if(interpret(data))
+			dev.blink(10);
+	});
+
+	write_to_log("KtT Shop System has been started");
+
+	/* attach webserver to mainloop */
+	new WebServer();
+
+	/* run mainloop */
+	new MainLoop().run();
+
+	/* call destructors */
+	dev = null;
+	db  = null;
+
+	return 0;
+}
+
+public void write_to_log(string format, ...) {
+	var arguments = va_list();
+	var message = format.vprintf(arguments);
+
+	stdout.printf(message + "\n");
+}
+
+public static bool interpret(string data) {
+	if(data.has_prefix("USER ")) {
+		string str_id = data.substring(5);
+		int32 id = int.parse(str_id);
+
+		/* check if data has valid format */
+		if(data != "USER %d".printf(id)) {
+			write_to_log("ungültige Benutzernummer: %s", data);
+			return false;
+		}
+
+		if(db.is_logged_in()) {
+			write_to_log("Last User forgot to logout!");
+			db.logout();
+		}
+
+		write_to_log("Login: %d", id);
+		return db.login(id);
+	} else if(data == "GUEST") {
+		if(db.is_logged_in()) {
+			write_to_log("Last User forgot to logout!");
+			db.logout();
+		}
+
+		write_to_log("Login: Guest");
+		return db.login(0);
+	} else if(data == "UNDO") {
+		if(!db.is_logged_in()) {
+			write_to_log("Can't undo if not logged in!");
+			return false;
+		} else {
+			write_to_log("Undo last purchase!");
+			return db.undo();
+		}
+	} else if(data == "LOGOUT") {
+		if(db.is_logged_in()) {
+			write_to_log("Logout!");
+			return db.logout();
+		}
+
+		return false;
+	} else {
+		uint64 id = uint64.parse(data);
+
+		/* check if data has valid format */
+		if(data != "%llu".printf(id)) {
+			write_to_log("ungültiges Produkt: %s", data);
+			return false;
+		}
+
+		if(db.buy(id)) {
+			write_to_log("gekaufter Artikel: %s (%d,%02d €)", db.get_product_name(id), db.get_product_price(id)/100, db.get_product_price(id) % 100);
+			return true;
+		} else {
+			write_to_log("Kauf fehlgeschlagen!");
+			return false;
+		}
+	}
+}
-- 
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