Feat: Button to select a random journal entry

README.md

@@ -106,7 +106,7 @@ Change `~/.config/notewrapper/config.json`. If it does not exist. On building, i
 - [x] Port vivify.vim to nixpkgs
 - [ ] Add a way to have vaults in different directories
 - [ ] some kind of FZF search for notes
-- [ ] A button to randomly select a note or an entry in a journal
+- [x] A button to randomly select a note or an entry in a journal
 - [x] Fix crash when the window is resized
 - [x] Actually open vivify when opening nvim
 - [x] Write the journaling code (separate files or one big journal files)
@@ -121,5 +121,4 @@ Change `~/.config/notewrapper/config.json`. If it does not exist. On building, i
 - [ ] Fixe all the small stuff marked //(TODO LATER) in the code
 - [x] Comply with GPL-3 notice (add info about no waranty, etc.)
 - [ ] A converter for both type of journals
-- [ ] With journals, a way to open random entry (not today's)
 

src/notes.c

@@ -156,13 +156,17 @@ char *updateJournal(char *path, char *journal, char *timeFormat, int shouldDebug
       strncpy(path, temp, PATH_MAX);
       DIR *dividedJournalDirectory = opendir(path);
       error(dividedJournalDirectory==NULL, "program", "Could not open directory %s", path);
-      char **entryArray = NULL; // will contain all the entries of the divided journal
+      /*char **entryArray = NULL; // will contain all the entries of the divided journal
       // This time it will be different. We must add "invert" the extraOptions to the options so that the Create new entry in journal is on top
-      entryArray = realloc(entryArray, sizeof(char*));
+      entryArray = realloc(entryArray, sizeof(char*));*/
+      // simpler to just malloc 2 and later realloc
+      const int extraOptions = 2; 
+      char **entryArray = malloc(extraOptions*sizeof(char*));
       char *createEntryMessage = malloc(PATH_MAX);
       snprintf(createEntryMessage, PATH_MAX, "Create new entry for the journal %s", journal);
       entryArray[0] = createEntryMessage;
-      size_t entryCount = 1; // we need to count how many dirs there is to always readjust how many memory we alloc
+      entryArray[1] = "Open random entry";
+      size_t entryCount = extraOptions; // we need to count how many dirs there is to always readjust how many memory we alloc
       // Refer https://pubs.opengroup.org/onlinepubs/7990989775/xsh/readdir.html
       // for readdir()
       debug("┌------------------------------\n Detected files and dirs from %s:", path);
@@ -185,10 +189,10 @@ char *updateJournal(char *path, char *journal, char *timeFormat, int shouldDebug
       altDebug("└------------------------------\n");
       // free's some used memory
       closedir(dividedJournalDirectory);
-      qsort(entryArray + 1, entryCount - 1, sizeof(const char *), reverseCompareString); // sorts the journals entries alphabetically. // the + 1 - 1 is to not sort "Create new entry for the journal" which is the first element
+      qsort(entryArray + extraOptions, entryCount - extraOptions, sizeof(const char *), reverseCompareString); // sorts the journals entries alphabetically. // the + extraOptions - extraOptions is to not sort "Create new entry for the journal" or Open random entry which is the first element
 
       // we must now select to create new entry or to enter in old one
-      char *selectedOption = ncursesSelect(entryArray, "Create new entry or acces old entry (Use arrows or WASD, Enter to select):", 1, entryCount -1, " ", " ", "", shouldDebug); // the "Create new entry for the journal %s" will be the only options. All other will be extraOptions. This is made so that "Create [...] %s" will always be on top
+      char *selectedOption = ncursesSelect(entryArray, "Create new entry or acces old entry (Use arrows or WASD, Enter to select):", extraOptions, entryCount - extraOptions, " ", " ", "", shouldDebug); // the "Create new entry for the journal %s" will be the only options. All other will be extraOptions. This is made so that "Create [...] %s" will always be on top
       debug("Selected option from journal entry selection: %s", selectedOption);
       if (strcmp(selectedOption, createEntryMessage) == 0) { // create new entry
         char temp[PATH_MAX];
@@ -208,6 +212,15 @@ char *updateJournal(char *path, char *journal, char *timeFormat, int shouldDebug
         } else {
           debug("Today's entry (%s) already exist. We won't create a new one.", dateWithExtension);
         }
+      } else if (strcmp(selectedOption, entryArray[1]) == 0) { // if we choosed to open a random entry
+        // setting up the seed for rand()
+        srand(time(NULL)); // not totaly random, just pseudorandom
+        int randomEntry = extraOptions + (rand() % (entryCount - extraOptions)); // we get a random number between extraOptions and entryCount (so all journal entries and not extraOptions)
+        char temp[PATH_MAX];
+        snprintf(temp, PATH_MAX, "%s/%s", path, entryArray[randomEntry]); // reconstruct the path
+        strncpy(path, temp, PATH_MAX);
+        debug("Selected random entry %s. It's path is %s.", entryArray[randomEntry], path);
+                           //
       } else { // we just recreate the path to the selected entry
         // snprintf does not like to have the same variable as input and output so we use a buffer
         char temp[PATH_MAX];