From e4296187eeffc36c95308d3d315d44adc948433c Mon Sep 17 00:00:00 2001
From: praticamentetilde <maggioniclaudio1999@gmail.com>
Date: Mon, 1 Jan 2018 14:14:05 +0100
Subject: [PATCH] Server funzionante

---
 gamedata.c | 40 ++++++++++++++++++++++++++++++++++------
 gamedata.h |  3 +++
 server.c   | 19 ++++++++++++++-----
 3 files changed, 51 insertions(+), 11 deletions(-)

diff --git a/gamedata.c b/gamedata.c
index 8dd668b..b6fe8ed 100644
--- a/gamedata.c
+++ b/gamedata.c
@@ -15,9 +15,11 @@ gamedata_t* gamedata_new() {
     perror("gamedata malloc() creation error: ");
   }
 
+  srand(time(NULL));
+
   self->chf = 0;
-  self->bitto = 500;
-  self->flour = 200;
+  self->bitto = 200;
+  self->flour = 400;
   self->pizzoccheri = 0;
   self->chf_unit = 0.5;
   return self;
@@ -33,11 +35,11 @@ void gamedata_print_status(gamedata_t *self, FILE* out) {
   fprintf(out, "UNIT PRICE %.02f CHF, PROFIT %.02f CHF\n", self->chf_unit, self->chf);
 }
 
-#define Q_BITTO_FOR_PIZZOCCHERO 1
-#define Q_FLOUR_FOR_PIZZOCCHERO 2
+#define Q_BITTO_UNIT 1
+#define Q_FLOUR_UNIT 2
 bool gamedata_make_pizzoccheri(gamedata_t *self, unsigned int q) {
-  int q_flour = q * Q_FLOUR_FOR_PIZZOCCHERO;
-  int q_bitto = q * Q_BITTO_FOR_PIZZOCCHERO;
+  int q_flour = q * Q_FLOUR_UNIT;
+  int q_bitto = q * Q_BITTO_UNIT;
 
   if(self->flour < q_flour || self->bitto < q_bitto) {
     return false;
@@ -75,3 +77,29 @@ bool gamedata_buy_flour(gamedata_t *self, unsigned int q) {
   self->flour += q;
   return true;
 }
+
+unsigned int gamedata_sell_pizzoccheri(gamedata_t *self) {
+  if(self->pizzoccheri == 0) {
+    return 0;
+  }
+
+  int sold = 5 * (-self->chf_unit + 1 + 2 * (double)rand() / (double)RAND_MAX);
+
+  if(sold <= 0) {
+    return 0;
+  }
+  if(sold > self->pizzoccheri) {
+    sold = self->pizzoccheri;
+  }
+
+  self->pizzoccheri -= sold;
+  self->chf += sold * self->chf_unit;
+
+  return sold;
+}
+
+bool gamedata_set_unit_price(gamedata_t *self, double price) {
+  if(price < 0) return false;
+  self->chf_unit = price;
+  return true;
+}
diff --git a/gamedata.h b/gamedata.h
index 8feaf9a..1e5308e 100644
--- a/gamedata.h
+++ b/gamedata.h
@@ -4,6 +4,7 @@
 #include <stdbool.h>
 #include <stdlib.h>
 #include <errno.h>
+#include <time.h>
 
 typedef struct _gamedata gamedata_t;
 
@@ -13,5 +14,7 @@ extern bool gamedata_buy_bitto(gamedata_t*, unsigned int);
 extern bool gamedata_buy_flour(gamedata_t*, unsigned int);
 extern void gamedata_print_status(gamedata_t*, FILE*);
 extern bool gamedata_make_pizzoccheri(gamedata_t*, unsigned int);
+extern unsigned int gamedata_sell_pizzoccheri(gamedata_t*);
+extern bool gamedata_set_unit_price(gamedata_t*, double);
 
 #endif
diff --git a/server.c b/server.c
index 8889c6b..3b0f7df 100644
--- a/server.c
+++ b/server.c
@@ -86,22 +86,31 @@ int main(int argc, char** argv) {
           double d;
         } arg1;
 
-        if(sscanf(command, "MAKE %u\n", &(arg1.u)) == 1) {
+        if(sscanf(command, "make %u\n", &(arg1.u)) == 1) {
           bool status = gamedata_make_pizzoccheri(curr_data, arg1.u);
           fprintf(out, status ? "OK Made.\n" : "KO 1 Insufficient resources.\n");
         }
-        else if(sscanf(command, "BUY BITTO %u", &(arg1.u)) == 1) {
+        else if(prefix("sell", command)) {
+          unsigned int sold = gamedata_sell_pizzoccheri(curr_data);
+          fprintf(out, "OK %d sold.\n", sold);
+        }
+        else if(sscanf(command, "set price %lf\n", &(arg1.d)) == 1) {
+          bool status = gamedata_set_unit_price(curr_data, arg1.d);
+          fprintf(out, status ? "OK The price of one pizzocchero is now at %.02lf CHF.\n"
+                  : "KO %.02lf CHF is not a valid price.\n", arg1.d);
+        }
+        else if(sscanf(command, "buy bitto %u", &(arg1.u)) == 1) {
           bool status = gamedata_buy_bitto(curr_data, arg1.u);
           fprintf(out, status ? "OK Purchased.\n" : "KO 2 Insufficient funds\n");
         }
-        else if(sscanf(command, "BUY FLOUR %u", &(arg1.u)) == 1) {
+        else if(sscanf(command, "buy flour %u", &(arg1.u)) == 1) {
           bool status = gamedata_buy_flour(curr_data, arg1.u);
           fprintf(out, status ? "OK Purchased.\n" : "KO 3 Insufficient funds\n");
         }
-        else if(prefix("STATUS", command)) {
+        else if(prefix("status", command)) {
           gamedata_print_status(curr_data, out);
         }
-        else if(prefix("EXIT", command)) {
+        else if(prefix("exit", command)) {
           fprintf(out, "OK Closing...\n");
           break;
         }