fixes missing library from makefile

Makefile

@@ -1,7 +1,7 @@
 CC=gcc
 CFLAGS= -c -g -Wall
 
-LDLIBS = -lcurl -lcjson
+LDLIBS = -lcurl -lcjson -lsqlite3
 
 TARGET := isbn-lookup
 

src/db.c

@@ -1,3 +1,37 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <sqlite3.h>
+
 #include "include/db.h"
 
+static int get_num_rows(sqlite3* db)
+{
+	int rows = 0;
 
+	sqlite3_stmt* msg;
+	sqlite3_prepare(db, "SELECT * FROM books;", -1, &msg, NULL);
+	while (sqlite3_step(msg) == SQLITE_ROW)
+		rows++;
+	sqlite3_finalize(msg);
+	
+	return rows;
+}
+
+void setup_db(sqlite3* db)
+{
+	int err;
+	char* err_buf = 0;
+
+	err = sqlite3_exec(db,
+			"CREATE TABLE IF NOT EXISTS books (id UNSIGNED INT PRIMARY KEY, \
+			title TEXT, subtitle TEXT, isbn TEXT, authors TEXT, subjects TEXT, \
+			langs TEXT, date_added TEXT, date_completed TEXT, pub_date TEXT, \
+			image_code TEXT, year_of_pub YEAR, page_len UNSIGNED INT);",
+			0, 0, &err_buf);
+	if (err != SQLITE_OK) {
+		fprintf(stderr, "sqlite3_exec: %s\n", err_buf);
+		sqlite3_free(err_buf);
+		sqlite3_close(db);
+		exit(EXIT_FAILURE);
+	}
+}

src/include/db.h

@@ -1,3 +1,5 @@
+#include <sqlite3.h>
+
 #ifndef DB_H
 #define DB_H
 
@@ -5,9 +7,11 @@ typedef struct {
 	char *title, *subtitle, *isbn;
 	char *authors, *subjects, *langs;
 	char *date_added, *pub_date;
-	char *image_url;
+	char *image_code;
 
 	int year_of_pub, page_len;
 } book_t;
 
+void setup_db(sqlite3* db);
+
 #endif