From 578bf0b0f5e180ee7d4ad5a642a16a8a42194d02 Mon Sep 17 00:00:00 2001
From: bjt-user <bjoern.foersterling@web.de>
Date: Wed, 10 Jul 2024 16:42:43 +0200
Subject: [PATCH] fixed pretty_print_date_time

---
 src/date_time_handling.c                 |  7 +++++++
 unit-tests/Makefile                      |  3 +++
 unit-tests/test_pretty_print_date_time.c | 14 ++++++++++++++
 unit-tests/test_print_upcoming.c         |  4 +++-
 4 files changed, 27 insertions(+), 1 deletion(-)
 create mode 100644 unit-tests/test_pretty_print_date_time.c

diff --git a/src/date_time_handling.c b/src/date_time_handling.c
index bb35d3d..d6717bd 100644
--- a/src/date_time_handling.c
+++ b/src/date_time_handling.c
@@ -22,6 +22,10 @@ void get_date(char buffer[]) {
 
 // 20230823T194138 -> 2023-08-23 19:41:38
 void pretty_print_date_time(char date_time[]) {
+	// copy date_time because strtok will destroy it
+	char date_time_copy[15] = "";
+	strcpy(date_time_copy, date_time);
+
 	char *date = strtok(date_time, "T");
 	char *time = strtok(NULL, "T");
 	if (date == NULL) {
@@ -37,6 +41,9 @@ void pretty_print_date_time(char date_time[]) {
 		printf ("%c%c:", time[2], time[3]);
 		printf ("%c%c", time[4], time[5]);
 	}
+
+	// put variable date_time back together
+	strcpy(date_time, date_time_copy);
 }
 
 void marshall_date_time(char date_time[]) {
diff --git a/unit-tests/Makefile b/unit-tests/Makefile
index b7ddd8a..414c49c 100644
--- a/unit-tests/Makefile
+++ b/unit-tests/Makefile
@@ -8,6 +8,9 @@ test_parse_ics_file:
 test_print_upcoming:
 	$(CC) $(CFLAGS) test_print_upcoming.c ../src/parse_ics.c ../src/string_handling.c ../src/list_handling.c ../src/date_time_handling.c ../src/read_until_string.c ../src/read_until_nl.c -o test_print_upcoming.out
 
+test_pretty_print_date_time:
+	$(CC) $(CFLAGS) test_pretty_print_date_time.c ../src/string_handling.c ../src/date_time_handling.c ../src/read_until_string.c ../src/read_until_nl.c -o test_pretty_print_date_time.out
+
 .PHONY:clean
 clean:
 	-rm -vf *.out
diff --git a/unit-tests/test_pretty_print_date_time.c b/unit-tests/test_pretty_print_date_time.c
new file mode 100644
index 0000000..2e4c555
--- /dev/null
+++ b/unit-tests/test_pretty_print_date_time.c
@@ -0,0 +1,14 @@
+#include "../src/date_time_handling.h"
+#include <stdio.h>
+
+int main() {
+	char current_date[] = "20240710T103000";
+
+	printf("current_date: %s\n", current_date);
+	printf("strlen(current_date): %ld\n\n", strlen(current_date));
+
+	pretty_print_date_time(current_date);
+
+	printf("\n\ncurrent_date: %s\n", current_date);
+	printf("strlen(current_date): %ld\n", strlen(current_date));
+}
diff --git a/unit-tests/test_print_upcoming.c b/unit-tests/test_print_upcoming.c
index 287a52d..8054f7f 100644
--- a/unit-tests/test_print_upcoming.c
+++ b/unit-tests/test_print_upcoming.c
@@ -6,7 +6,9 @@ int main() {
 	// initialize empty list
 	struct event *head = NULL;
 
-	char *current_date = "20240710T103000";
+	char *current_date = "20240710T113000";
+
+	printf("DEBUG - current_date: %s\n\n", current_date);
 
 	parse_ics_file("/home/bf/.local/share/evolution/calendar/system/calendar.ics", &head);