Enhance user management: update CSV data, refactor UUID search function, and implement person listing and search functionalities in the TUI.

TestList.csv

@@ -1 +1,31 @@
-1,Kamil,Novak,2504,0,0,0
+17,Klara,Novotna,3010,1,0,1
+18,Jan,Novak,3011,1,0,1
+19,Petr,Horak,3012,1,0,1
+20,Lucie,Kralova,3013,1,0,1
+21,Martin,Prochazka,3014,1,0,1
+22,Anna,Urbanova,3015,1,0,1
+23,David,Svoboda,3016,1,0,1
+24,Veronika,Kucerova,3017,1,0,1
+25,Tomas,Blaha,3018,1,0,1
+26,Barbora,Kratochvilova,3019,1,0,1
+27,Jakub,Pospisil,3020,1,0,1
+28,Eliska,Valkova,3021,1,0,1
+29,Ondrej,Stepanek,3022,1,0,1
+30,Simona,Holubova,3023,1,0,1
+31,Filip,Navratil,3024,1,0,1
+32,Adela,Slavikova,3025,1,0,1
+33,Radek,Polak,3026,1,0,1
+34,Monika,Adamcova,3027,1,0,1
+35,Jaroslav,Kolar,3028,1,0,1
+36,Petra,Malikova,3029,1,0,1
+37,Daniel,Richter,3030,1,0,1
+38,Kristyna,Stastna,3031,1,0,1
+39,Stepan,Musil,3032,1,0,1
+40,Lenka,Jurickova,3033,1,0,1
+41,Patrik,Vanek,3034,1,0,1
+42,Karolina,Vitkova,3035,1,0,1
+43,Stanislav,Sevcik,3036,1,0,1
+44,Alena,Matouskova,3037,1,0,1
+45,Josef,Suchy,3038,1,0,1
+46,Marketa,Rezacova,3039,1,0,1
+47,Libor,Hanak,3040,1,0,1

include/main.h

@@ -5,7 +5,7 @@
 #ifndef __MAIN_H__
 #define __MAIN_H__
 
-#define TRUE 1
+#define TRUE !0
 #define FALSE 0
 #define BYTE uint8_t
 #define MIN_X_TERMINAL_SIZE 50

include/tui.h

@@ -11,4 +11,8 @@ void uartDialog(char *uart_adress, int terminal_x, int terminal_y);
 
 void mainMenu(list_t * person_list, int terminal_x, int terminal_y);
 
+void personListing(list_t * person_list, int terminal_x, int terminal_y);
+
+void personSearch(list_t * person_list, int terminal_x, int terminal_y);
+
 #endif

include/users.h

@@ -59,7 +59,7 @@ uint16_t generateUUID(list_t *_list);
  * @param _surname Pointer to a string containing the user's surname.
  * @return Pointer to the UUID of the user if found, or 0 if no match is found.
  */
-uint16_t *searchUUIDByName(list_t *_list, char *_name, char *_surname);
+uint16_t searchUUIDByName(list_t *_list, char *_name, char *_surname, uint16_t * _uuids_found);
 
 /**
  * @brief Searches for a person in a linked list by their UUID.

src/tui.c

@@ -2,6 +2,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
+#include <ctype.h>
 #include "main.h"
 #include "tui.h"
 
@@ -173,6 +174,12 @@ void mainMenu(list_t *person_list, int terminal_x, int terminal_y)
         {
             switch (highlight)
             {
+            case 0:
+                personListing(person_list, terminal_x, terminal_y);
+                break;
+
+            case 1:
+                personSearch(person_list, terminal_x, terminal_y);
 
             case 5:
                 if (keboard_input == '\n')
@@ -190,3 +197,249 @@ void mainMenu(list_t *person_list, int terminal_x, int terminal_y)
         }
     }
 }
+
+void personListing(list_t *person_list, int terminal_x, int terminal_y)
+{
+    int win_height = 20;
+    int win_width = 76;
+    int start_y = (terminal_y - win_height) / 2;
+    int start_x = (terminal_x - win_width) / 2;
+
+    start_color();
+
+    WINDOW *personlisting = newwin(win_height, win_width, start_y, start_x);
+    wbkgd(personlisting, COLOR_PAIR(1));
+    box(personlisting, 0, 0);
+
+    wattron(personlisting, COLOR_PAIR(1));
+    wattron(personlisting, A_BOLD);
+    mvwprintw(personlisting, 0, (win_width - strlen("Filtered list")) / 2, "%s", "Filtered list");
+    wattroff(personlisting, A_BOLD);
+    wattroff(personlisting, COLOR_PAIR(1));
+    keypad(personlisting, TRUE);
+
+    int max_rows = win_height - 2;
+    int total_count = 0;
+    node_t *current = person_list->head;
+    while (current)
+    {
+        total_count++;
+        current = current->next;
+    }
+
+    int offset = 0;
+    int highlight = 0;
+    int keboard_input;
+
+    while (1)
+    {
+        werase(personlisting);
+        box(personlisting, 0, 0);
+        wattron(personlisting, COLOR_PAIR(1));
+        wattron(personlisting, A_BOLD);
+        mvwprintw(personlisting, 0, (win_width - strlen("Filtered list")) / 2, "%s", "Filtered list");
+        wattroff(personlisting, A_BOLD);
+        wattroff(personlisting, COLOR_PAIR(1));
+
+        wattron(personlisting, A_BOLD);
+        mvwprintw(personlisting, 1, 2, "UUID       Surname              Name                 Available");
+        wattroff(personlisting, A_BOLD);
+
+        current = person_list->head;
+        int idx = 0, row = 2;
+        while (current && row < win_height - 1)
+        {
+            if (current->user.uuid)
+                if (idx >= offset && row < win_height - 1)
+                {
+                    if (idx == highlight)
+                        wattron(personlisting, COLOR_PAIR(2));
+                    mvwprintw(personlisting, row, 2, "%-10hu %-20s %-20s %s",
+                              current->user.uuid,
+                              current->user.surname,
+                              current->user.name,
+                              current->user.available ? "Yes               " : "No                ");
+                    if (idx == highlight)
+                        wattroff(personlisting, COLOR_PAIR(2));
+                    row++;
+                }
+            idx++;
+            current = current->next;
+        }
+
+        wrefresh(personlisting);
+
+        keboard_input = wgetch(personlisting);
+        if (keboard_input == KEY_UP)
+        {
+            if (highlight > 0)
+            {
+                highlight--;
+                if (highlight < offset)
+                    offset--;
+            }
+        }
+        else if (keboard_input == KEY_DOWN)
+        {
+            if (highlight < total_count - 1)
+            {
+                highlight++;
+                if (highlight >= offset + max_rows)
+                    offset++;
+            }
+        }
+        else if (keboard_input == '\n')
+        {
+            int idx = 0;
+            node_t *selected = person_list->head;
+            while (selected && idx < highlight)
+            {
+                selected = selected->next;
+                idx++;
+            }
+        }
+        else if (keboard_input == 27)
+        {
+            break;
+        }
+    }
+
+    delwin(personlisting);
+    touchwin(stdscr);
+    refresh();
+}
+
+void personSearch(list_t *person_list, int terminal_x, int terminal_y)
+{
+    int win_height = 20;
+    int win_width = 76;
+    int start_y = (terminal_y - win_height) / 2;
+    int start_x = (terminal_x - win_width) / 2;
+
+    char buttons[2][10] = {"<Search>", "<Back>"};
+    char prompts[2][10] = {"Name ", "Surname "};
+
+    start_color();
+
+    WINDOW *searchdialog = newwin(win_height, win_width, start_y, start_x);
+    wbkgd(searchdialog, COLOR_PAIR(1));
+    box(searchdialog, 0, 0);
+
+    wattron(searchdialog, COLOR_PAIR(1));
+    wattron(searchdialog, A_BOLD);
+    mvwprintw(searchdialog, 0, (win_width - strlen("Search")) / 2, "%s", "Search");
+    wattroff(searchdialog, A_BOLD);
+    wattroff(searchdialog, COLOR_PAIR(1));
+    keypad(searchdialog, TRUE);
+
+    char choice;
+    int highlight = 0;
+
+    int field_y = 2;
+    int field_x = 4;
+    static char name[32] = "";
+    static char surname[32] = "";
+    char *fields[2] = {name, surname};
+    int field_lens[2] = {31, 31};
+
+    uint16_t * uuids_found;
+
+    while (1)
+    {
+
+        for (int i = 0; i < 2; i++)
+        {
+            if (highlight == i)
+                wattron(searchdialog, COLOR_PAIR(2));
+            else
+                wattron(searchdialog, COLOR_PAIR(1));
+            mvwprintw(searchdialog, field_y + i * 2, field_x, "%s  [%30s]", prompts[i], fields[i]);
+            if (highlight == i)
+                wattroff(searchdialog, COLOR_PAIR(2));
+            else
+                wattroff(searchdialog, COLOR_PAIR(1));
+        }
+
+        int button_y = field_y + 7;
+        int button_x = field_x;
+        for (int i = 0; i < 2; i++)
+        {
+            if (highlight == 2 + i)
+                wattron(searchdialog, COLOR_PAIR(2));
+            else
+                wattron(searchdialog, COLOR_PAIR(1));
+            wattron(searchdialog, A_BOLD);
+            mvwprintw(searchdialog, button_y, button_x + i * 12, "%s", buttons[i]);
+            wattroff(searchdialog, A_BOLD);
+            if (highlight == 2 + i)
+                wattroff(searchdialog, COLOR_PAIR(2));
+            else
+                wattroff(searchdialog, COLOR_PAIR(1));
+        }
+
+        wrefresh(searchdialog);
+
+        choice = wgetch(searchdialog);
+
+        if (choice == '\t')
+        {
+            if (highlight < 3)
+            {
+                highlight++;
+            }
+            else
+                highlight = 0;
+        }
+        else if (choice == '\n')
+        {
+            if (highlight < 2)
+            {
+                echo();
+                curs_set(1);
+                mvwprintw(searchdialog, field_y + highlight * 2, field_x + strlen(prompts[highlight]) + 3, "%-30s", "");
+                wmove(searchdialog, field_y + highlight * 2, field_x + strlen(prompts[highlight]) + 4);
+                wgetnstr(searchdialog, fields[highlight], field_lens[highlight]);
+                curs_set(0);
+                noecho();
+            }
+            else if (highlight == 2)
+            {
+               uint16_t count = searchUUIDByName(person_list, name, surname, uuids_found);
+               list_t found_pesons;
+               found_pesons.head = NULL;
+               node_t **last_ptr = &found_pesons.head;
+               for (uint16_t i = 0; i < count; i++) {
+                   node_t *cur = person_list->head;
+                   while (cur) {
+                       if (cur->user.uuid == uuids_found[i]) {
+                           node_t *new_node = malloc(sizeof(node_t));
+                           if (new_node) {
+                               new_node->user = cur->user;
+                               new_node->next = NULL;
+                               *last_ptr = new_node;
+                               last_ptr = &new_node->next;
+                           }
+                           break;
+                       }
+                       cur = cur->next;
+                   }
+               }
+               personListing(&found_pesons, terminal_x, terminal_y);
+            }
+            else if (highlight == 3)
+            {
+                delwin(searchdialog);
+                touchwin(stdscr);
+                refresh();
+                break;
+            }
+        }
+        else if (choice == 27)
+        { // ESC
+            delwin(searchdialog);
+            touchwin(stdscr);
+            refresh();
+            break;
+        }
+    }
+}

src/users.c

@@ -56,49 +56,51 @@ node_t *searchPersonByUUID(
     return NULL;
 }
 
-uint16_t *searchUUIDByName(
+uint16_t searchUUIDByName(
     list_t *_list,
-    char *_name,
-    char *_surname)
-{
-    int sum = 0;
-    uint16_t *uuids = malloc(sizeof(uint16_t));
-    pthread_mutex_lock(&_list->lock);
-    node_t *current = _list->head;
-
-    if (_list->head == NULL)
+    const char *_name,
+    const char *_surname,
+    uint16_t **_uuids_found)
 {
+    if (_list == NULL || _name == NULL || _surname == NULL || _uuids_found == NULL) {
         return 0;
     }
 
-    if (uuids == NULL)
-    {
-        puts("Fatal error: free memory is not sufficient for this operation");
-        exit(EXIT_FAILURE);
-    }
+    uint16_t *uuids = NULL;
+    size_t sum = 0;
+    size_t capacity = 0;
+
+    pthread_mutex_lock(&_list->lock);
+    node_t *current = _list->head;
 
     while (current != NULL)
+    {
+        if (current->user.name != NULL && current->user.surname != NULL)
         {
             if (strcmp(_name, current->user.name) == 0 && strcmp(_surname, current->user.surname) == 0)
             {
-            sum++;
-
-            uuids = realloc(uuids, sum * sizeof(uint16_t));
-            if (uuids == NULL)
+                if (sum >= capacity) {
+                    capacity = (capacity == 0) ? 1 : capacity * 2;
+                    uint16_t *tmp = realloc(uuids, capacity * sizeof(uint16_t));
+                    if (tmp == NULL)
                     {
-                puts("Fatal error: free memory is not sufficient for this operation");
-                exit(EXIT_FAILURE);
+                        pthread_mutex_unlock(&_list->lock);
+                        free(uuids);
+                        fprintf(stderr, "Fatal error: insufficient memory for this operation\n");
+                        *_uuids_found = NULL;
+                        return 0;
                     }
-
-            uuids[sum - 1] = current->user.uuid;
+                    uuids = tmp;
                 }
+                uuids[sum++] = current->user.uuid;
+            }
+        }
+        current = current->next;
     }
     pthread_mutex_unlock(&_list->lock);
 
-    if (sum == 0)
-
-        return NULL;
-    return uuids;
+    *_uuids_found = uuids;
+    return (uint16_t)sum;
 }
 
 int addPersonToList(