From 3ab85464ff92c57a33945a32a8a00df5a9abb684 Mon Sep 17 00:00:00 2001
From: Tim Keller <tjkeller.xyz>
Date: Thu, 21 Nov 2024 20:32:46 -0600
Subject: add status symbols for not charging, full, and unknown status

---
 lowbat.c | 40 ++++++++++++++++++++++++++--------------
 1 file changed, 26 insertions(+), 14 deletions(-)

(limited to 'lowbat.c')

diff --git a/lowbat.c b/lowbat.c
index 572873a..b5fb665 100644
--- a/lowbat.c
+++ b/lowbat.c
@@ -21,6 +21,7 @@ static char batteries[MAX_BATTERIES][MAX_PSU_NAME_LEN];
 static unsigned int num_batteries;
 static FILE *fp;
 static char prop_path[MAX_PROP_PATH_LEN];
+static enum StatusSymbols { UNKNOWN = '?', CHARGING = '+', DISCHARGING = '-', NOT_CHARGING = '=', FULL = '=' };
 
 // functions
 void load_installed_batteries() {
@@ -111,33 +112,44 @@ int get_total_capacity() {
 	return energy_now * 100 / energy_full;
 }
 
-int is_discharging() {
-	char status[12]; // valid values: "Unknown", "Charging", "Discharging", "Not charging", "Full"
+char get_status() {
+	char status[MAX_BATTERIES];
 	int i;
 
 	if (!num_batteries)
-		return 0;
+		return UNKNOWN;
 
+	/* store first letter of each battery's status
+	 * valid values: "Unknown", "Charging", "Discharging", "Not charging", "Full" */
+	// return discharging if any batteries are discharging
 	for (i = 0; i < num_batteries; i++) {
-		read_prop(batteries[i], "status", "%s", &status);
-		if (strcmp(status, "Discharging") != 0)
-			return 0;
+		read_prop(batteries[i], "status", "%c", &status[i]);
+		if (status[i] == 'D')
+			return DISCHARGING;
 	}
-
-	return 1;
+	// return charging if any batteries are charging
+	if (strchr(status, 'C') != NULL)
+		return CHARGING;
+	// return not charging if any batteries are not charging
+	if (strchr(status, 'F') != NULL || strchr(status, 'N') != NULL)
+		return NOT_CHARGING;
+
+	// return unknown otherwise
+	return UNKNOWN;
 }
 
 int main() {
-	int discharging, capacity, old_discharging = -1, old_capacity = -1;
+	char status, old_status = -1;
+	int capacity, old_capacity = -1;
 	int warning_level = 0; // 1 if warned already, 2 if warned with critical warning
 	char msg[MAX_MSG_LEN];
 
 	while (1) {
 		load_installed_batteries();
-		discharging = is_discharging();
+		status = get_status();
 		capacity = get_total_capacity();
 
-		if (discharging) {
+		if (status == DISCHARGING) {
 			if (capacity <= 5 && warning_level < 2) {
 				snprintf(msg, MAX_MSG_LEN, "%d%% remains", capacity);
 				notifysend("Critical Low Battery Warning", msg, NOTIFY_URGENCY_CRITICAL);
@@ -153,11 +165,11 @@ int main() {
 			warning_level = 0; // clear conditions
 		}
 
-		if (discharging != old_discharging || capacity != old_capacity) {
-			printf("%s%d%%\n", discharging ? "-" : "+", capacity);
+		if (status != old_status || capacity != old_capacity) {
+			printf("%c%d%%\n", status, capacity);
 			fflush(stdout);
 		}
-		old_discharging = discharging;
+		old_status = status;
 		old_capacity = capacity;
 		sleep(PERIOD);
 	}
-- 
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