Merge pull request 'Merge ActivePostIDS#1 into Master' (#5) from ActivePostIDS#1 into master

Reviewed-on: #5

.gitignore

@@ -1,5 +1,8 @@
 # ---> C
 # Prerequisites
+*
+!*.*
+!LICENSE
 *.d
 
 # Object files

BlogDB.c

@@ -3,6 +3,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdbool.h>
+#include <malloc.h>
 
 static MYSQL* conn2maria();
 static int AddPost(char title[], int authorId, char datePosted[], char post[], int tags[], size_t tagSize, MYSQL* con);
@@ -18,6 +19,7 @@ static int PullAuthorData(char* strings[4], int authorID, MYSQL* con);
 static int ChangeAuthor(int postID, int authorID, MYSQL* con);
 static int TogglePost(int postID, MYSQL* con);
 static bool IsEnabled(int postID, MYSQL* con);
+static int* ActivePostIDs(MYSQL* con);
 
 // Connects to the MariaDB database and returns the connection 
 MYSQL* conn2maria()
@@ -635,8 +637,6 @@ int TogglePost(int postID, MYSQL* con)
     int num_fields = mysql_num_fields(result);
 
     MYSQL_ROW row;
-    int postFound = 1;
-   
     row = mysql_fetch_row(result);
 
     if (row == NULL)
@@ -709,14 +709,74 @@ bool IsEnabled(int postID, MYSQL* con)
     return !state;
 }
 
+// Returns an array of IDs for all the posts that have state=0, 
+// the last element in the array is set to be negative as to prevent going into unallocated data.
+// Remember to free() the returned array 
+int* ActivePostIDs(MYSQL* con)
+{
+
+
+    if (con == NULL) 
+    {
+        con = conn2maria();
+    }
+
+    // Query the server, if successful continue, else throw error
+    if (mysql_query(con, "SELECT COUNT(*) FROM blog_posts WHERE state=(0)"))
+    {
+        fprintf(stderr, "%s\n", mysql_error(con));
+        mysql_close(con);
+        exit(1);
+    }
+
+    // Get results
+    MYSQL_RES *result = mysql_store_result(con);
+    MYSQL_ROW row;
+    row = mysql_fetch_row(result);
+
+    int count = atoi(row[0]);
+    //printf("%d\n", count);
+
+    free(result);
+   
+    // Query the server, if successful continue, else throw error
+    if (mysql_query(con, "SELECT id FROM blog_posts WHERE state=(0)")) 
+    {
+        fprintf(stderr, "%s\n", mysql_error(con));
+        mysql_close(con);
+        exit(1);
+    }
+
+    MYSQL_RES *result2 = mysql_store_result(con);
+
+    int *arr = (int *)malloc(sizeof(int) * (count + 1));
+    printf("arr was allocated: %db of memory\n", sizeof(int) * (count + 1));
+
+    for (int i = 0; i < count; ++i) {
+        row = mysql_fetch_row(result2);
+        if (row != NULL) {
+            arr[i] = atoi(row[0]);
+        }
+    }
+
+    arr[count] = -1;
+
+    //return sizeof(int) * count;
+    //return count;
+
+    return arr;
+
+
+}
+
 
 // Main
 int main(int argc, char *argv[])
 {
     /*
-    // =================================
+    // ===================================
     // Example of using 'PullPostData()'
-    // =================================
+    // ===================================
 
     // Init array of six strings
     // Pull data of postID '1' into 'result'
@@ -730,10 +790,16 @@ int main(int argc, char *argv[])
         printf("%s\n", result[i]);
     }
 
-    // =================================
+    // ===================================
     */
 
     /*
+    // ===================================
+    // Example of using 'PullAuthorData()'
+    // ===================================
+   
+    // Init array of four strings
+    // Pull data of authorID '1' into 'result'
     char *result[4];
     PullAuthorData(result, 1, NULL);
 
@@ -743,19 +809,39 @@ int main(int argc, char *argv[])
         // Print contents on a new line
         printf("%s\n", result[i]);
     }
+    // ===================================
     */
 
+    /*
+    // ===================================
+    // Example of using 'ActivePostIDs()'
+    // ===================================
+    
+    // Generate array of IDs
+    int *num = ActivePostIDs(NULL);
+
+    // Loop until element is negative i.e. the last
+    for (int i = 0; num[i] > 0; ++i) 
+    {
+        // Print contents on a new line
+        printf("%d\n", num[i]);
+    }
+
+    // Free the memory
+    free(num);
+    
+    // ===================================
+    */
+
+
     // Open the connection
     MYSQL *con = conn2maria();
 
-    // =================================
-    // Example of using 'PullPostData()'
-    // =================================
-    
     // AddPost return the inserted rows, NULL pointer for no tags, 0 for size
-    
+    //
     //int tags[] = {1, 2, 3};
     //printf("%d", AddPost("Something", 1, "2020-01-01", "Ssdjshdjahdkjomething", tags, sizeof(tags)));
+
     //AssignTag(6, 42, con);
     //EditPost(69, "HEY", "THERE BUDDY", con);
     //printf("%d\n", AddTag("Test", con));
@@ -764,8 +850,8 @@ int main(int argc, char *argv[])
     //EditTag(5, "Projects", con);
     //AddAuthor("Me", "Meson", "email@me.com", con);
     //ChangeAuthor(62, 2, con);
-    //TogglePost(51, con);
+    //TogglePost(81, con);
-    //printf("%s\n", IsEnabled(51, con) ? "True" : "False");
+    //printf("%s\n", IsEnabled(81, con) ? "True" : "False");
 
     // =================================