create basic students to json file function & clean course_selection_data.csv

main.c

@@ -38,7 +38,7 @@ typedef struct {
 int count_lines(char data_dir[]) {
   FILE *stream = fopen(data_dir, "r");
   if (!stream) {
-    fputs("Failed to open CSV file", stderr);
+    fputs("Failed to open CSV file\n", stderr);
     return -1;
   }
   char buff[MAX_CHAR];
@@ -54,7 +54,7 @@ CSV_LINE *csvReader(char data_dir[], size_t size) {
 
   FILE *stream = fopen(data_dir, "r");
   if (!stream) {
-    fputs("Failed to open CSV file", stderr);
+    fputs("Failed to open CSV file\n", stderr);
     return NULL;
   }
 
@@ -250,6 +250,48 @@ COURSE *getCourses(CSV_LINE *lines, size_t lines_len, UNIQUE_COURSES unique_cour
   return courses;
 }
 
+/*** DEFINE JSON FUNCTION HANDLERS ***/
+
+int writeStudentsToJson(STUDENT *students, size_t numberOfStudents, char output_dir[]) {
+  FILE *stream = fopen(output_dir, "w");
+  if (!stream) {
+    fputs("Failed to open students output file", stderr);
+    return -1;
+  }
+
+  /*
+    TODO: expand this function to handle schedule and remainingAlts when data is provided
+  */
+
+  fprintf(stream, "[\n");
+
+  for (size_t i = 0; i < numberOfStudents; i++) {
+    fprintf(stream, "  {\n");
+    fprintf(stream, "    \"pupilNum\": %d,\n", students[i].pupilNum);
+    fprintf(stream, "    \"requests\": [\n");
+    
+    for (size_t j = 0; j < students[i].requestsLen; j++) {
+      fprintf(stream, "      {\n");
+      fprintf(stream, "        \"crsNo\": \"%s\",\n", students[i].requests[j].crsNo);
+      fprintf(stream, "        \"description\": \"%s\",\n", students[i].requests[j].description);
+      fprintf(stream, "        \"alternate\": %s\n", students[i].requests[j].alternate ? "true" : "false");
+      fprintf(stream, "      }%s\n", j == students[i].requestsLen - 1 ? "" : ",");
+    }
+    fprintf(stream, "    ],\n");
+    
+    fprintf(stream, "    \"schedule\": [],\n");
+    fprintf(stream, "    \"expectedClasses\": %d,\n", students[i].expectedClasses);
+    fprintf(stream, "    \"classes\": %d,\n", students[i].classes);
+    fprintf(stream, "    \"remainingAlts\": [],\n");
+    fprintf(stream, "    \"grade\": %d\n", students[i].grade);
+    fprintf(stream, "  }%s\n", i == numberOfStudents - 1 ? "" : ",");
+  }
+
+  fprintf(stream, "]");
+  fclose(stream);
+  return 0;
+}
+
 int main(int argc, char **argv) {
 
   /*
@@ -287,7 +329,7 @@ int main(int argc, char **argv) {
       - start algorithm
   */
 
-  // if (writeStudentsToJson(students, students_info.numberOfStudents, "output/students.json") == -1) return -1;
+  if (writeStudentsToJson(students, students_info.numberOfStudents, "output/students.json") == -1) return -1;
   // if (writeCoursesToJson(courses, courses_info.numberOfCourses) == -1) return -1;
 
   // Algorithm here