Separates the isbn-lookup interactions into its own file

This is prepping for adding more features, as i want the actual
functions that are interaction with the `isbn` tool to be separate

Makefile

@@ -1,5 +1,5 @@
 all: api/*.cpp
-	g++ api/main.cpp api/csv.cpp -o manager
+	g++ api/main.cpp api/csv.cpp api/isbn-interaction.cpp -o manager
 	mkdir -p bin
 	mv manager bin/
 clean:

api/isbn-interaction.cpp

@@ -0,0 +1,49 @@
+#include <string>
+#include <vector>
+#include <fstream>
+
+#include "isbn-interaction.h"
+#include "csv.h"
+
+#define BOOK_FILENAME "books.csv"
+
+std::string book_vec_to_json(std::vector<std::string> headers, std::vector<std::string> book)
+{
+	int i;
+	std::string out = "{";
+	for (i = 0; i < book.size(); i++) {
+		out += "\"" + headers[i] + "\":";
+		out += "\"" + book[i] + "\",";
+	}
+	return out + "}";
+
+}
+
+std::string get_all_books()
+{
+	std::ifstream file;
+	int file_exists;
+	std::string line, total_lines;
+	std::vector<std::string> book_vec;
+	std::vector<std::string> header_vec;
+
+	file.open(BOOK_FILENAME);
+
+	if (!file.good()) {
+		fprintf(stderr, "Theres no books available!\n"); 
+		return "No books saved!";
+	}
+
+	std::getline(file, line); 
+	
+	// this contains the headers so that we can fill the json file
+	header_vec = get_csv_as_vector(line); 
+
+	total_lines = "{";	
+	while (std::getline(file, line)) {
+		book_vec = get_csv_as_vector(line);
+		total_lines += book_vec_to_json(header_vec, book_vec) + ",";
+	}
+
+	return total_lines + "}";
+}

api/isbn-interaction.h

@@ -0,0 +1,23 @@
+#ifndef ISBN_INTERACTION_H
+#define ISBN_INTERACTION_H
+
+/**
+ * std::string book_vec_to_json
+ * std::vector<std::string> headers - Vector of strings that contain the type information of the data
+ * std::vector<std::string> book - Vector of strings that contain the data
+ *
+ * Helper function that converts a vector of book data into a json format
+ */
+std::string book_vec_to_json(std::vector<std::string> headers, std::vector<std::string> book);
+
+/**
+ * std::string get_all_books
+ *
+ * This will return all the currently saved books.
+ */
+std::string get_all_books();
+
+
+
+
+#endif

api/main.cpp

@@ -4,54 +4,11 @@
 #include <fstream>
 
 #include "csv.h"
-
+#include "isbn-interaction.h"
-#define BOOK_FILENAME "books.csv"
-
-std::string book_vec_to_json(std::vector<std::string> headers, std::vector<std::string> book)
-{
-	int i;
-	std::string out = "{";
-	for (i = 0; i < book.size(); i++) {
-		out += "\"" + headers[i] + "\":";
-		out += "\"" + book[i] + "\",";
-	}
-	return out + "}";
-
-}
-
-std::string get_all_books()
-{
-	std::ifstream file;
-	int file_exists;
-	std::string line, total_lines;
-	std::vector<std::string> book_vec;
-	std::vector<std::string> header_vec;
-
-	file.open(BOOK_FILENAME);
-
-	if (!file.good()) {
-		fprintf(stderr, "Theres no books available!\n"); 
-		return "No books saved!";
-	}
-
-	std::getline(file, line); 
-	
-	// this contains the headers so that we can fill the json file
-	header_vec = get_csv_as_vector(line); 
-	
-
-	total_lines = "{";	
-	while (std::getline(file, line)) {
-		book_vec = get_csv_as_vector(line);
-		total_lines += book_vec_to_json(header_vec, book_vec) + ",";
-	}
-
-	return total_lines + "}";
-}
 
 std::string print_hello()
 {
-	return "Hello, world!";
+	return "server is running!";
 }
 
 int main()