X-Git-Url: http://pileus.org/git/?p=lackey;a=blobdiff_plain;f=src%2Fdaemon.c;fp=src%2Fdaemon.c;h=ea61afb0fbde7befe510f52de92c29f0ed80d3e7;hp=0000000000000000000000000000000000000000;hb=d45541aeb31a0e34a2a43df0e112f1f720f80abf;hpb=7edd7d3a9f0bdaaa8df9f68a73f7c84e2b514ce6

diff --git a/src/daemon.c b/src/daemon.c
new file mode 100644
index 0000000..ea61afb
--- /dev/null
+++ b/src/daemon.c
@@ -0,0 +1,202 @@
+/*
+ * Copyright (C) 2017 Andy Spencer <andy753421@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define _POSIX_C_SOURCE 200112L
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "util.h"
+#include "conf.h"
+#include "date.h"
+#include "cal.h"
+#include "daemon.h"
+
+/* Config data */
+static int   reminder = 15*60;
+static char *command  = NULL;
+
+/* Local data */
+static date_t old;
+static date_t new;
+
+/* Local functions */
+static void date_str(char *str, size_t size, date_t *date)
+{
+	snprintf(str, size, "%04d-%02d-%02d %02d:%02d:%02d",
+			date->year+1, date->month+1, date->day,
+			date->hour,   date->min,     date->sec);
+}
+
+static void notify(event_t *event)
+{
+	static char start_str[32];
+	static char end_str[32];
+
+	date_t start = event->start;
+	date_t end   = event->end;
+	wday_t wday  = day_of_week(start.year, start.month, start.day);
+
+	if (command) {
+		date_str(start_str, sizeof(start_str), &event->start);
+		date_str(end_str, sizeof(end_str), &event->end);
+
+		setenv("EVENT_NAME",  event->name ?: "", 1);
+		setenv("EVENT_DESC",  event->desc ?: "", 1);
+		setenv("EVENT_LOC",   event->loc  ?: "", 1);
+		setenv("EVENT_START", start_str, 1);
+		setenv("EVENT_END",   end_str,   1);
+
+		system(command);
+
+		unsetenv("EVENT_NAME");
+		unsetenv("EVENT_DESC");
+		unsetenv("EVENT_LOC");
+		unsetenv("EVENT_START");
+		unsetenv("EVENT_END");
+	} else {
+		printf("%s, %s %d, %d, %02d:%02d-%02d:%02d\n",
+			day_to_string(wday),
+			month_to_string(start.month),
+			start.day+1,
+			start.year,
+			start.hour, start.min,
+			end.hour,   end.min);
+
+		if (event->name)
+			printf("    Name:     %s\n", event->name);
+		if (event->loc)
+			printf("    Location: %s\n", event->loc);
+		if (event->desc)
+			printf("    Details:  %s\n", event->desc);
+	}
+}
+
+static int step(void)
+{
+	int delay = 24*60*60;
+
+	debug("Polling: %02dh %02dm %02ds",
+		NOW.hour, NOW.min, NOW.sec);
+
+	/* Bump timestamps */
+	old = new;
+	new = NOW;
+
+	/* Print notifications */
+	for (event_t *cur = EVENTS; cur; cur = cur->next) {
+		if (compare(&cur->start, &old) < 0)
+			continue;
+
+		int old_until = get_secs(&old, &cur->start);
+		int new_until = get_secs(&new, &cur->start);
+
+		if (old_until > reminder && new_until <= reminder) {
+			debug("Notify: %s", cur->name);
+			notify(cur);
+		}
+		if (new_until > reminder) {
+			delay = new_until - reminder;
+			break;
+		}
+	}
+
+	/* Return delay */
+	return delay;
+}
+
+/* Initialize */
+void daemon_init(void)
+{
+	old = NOW;
+	new = NOW;
+}
+
+void daemon_main(void)
+{
+	int delay = 0;
+	while (1) {
+		date_sync();
+		delay = step();
+		fflush(stdout);
+		sleep(delay);
+	}
+}
+
+void daemon_exit(void)
+{
+}
+
+/* Config parser */
+void daemon_config(const char *group, const char *name, const char *key, const char *value)
+{
+	if (match(group, "daemon")) {
+		if (match(key, "reminder")) {
+			reminder = get_number(value);
+		} else if (match(key, "notify")) {
+			command = get_string(value);
+		}
+	}
+}
+
+/* Test */
+void daemon_test(void)
+{
+	static event_t event0 = {
+		.name   = "test event",
+		.desc   = "this event is random and does not exist",
+	};
+	static event_t event1 = {
+		.name   = "test event",
+		.desc   = "this event is random and does not exist",
+	};
+	static todo_t todo = {
+		.name   = "test todo",
+		.desc   = "this todo is random and does not exist",
+		.status = 50,
+	};
+
+	EVENTS = &event0;
+	EVENTS->next = &event1;
+	TODOS = &todo;
+
+	date_sync();
+
+	NOW.hour    = 0;
+	NOW.min     = 0;
+	NOW.sec     = 0;
+
+	event0.start = ((date_t){NOW.year, NOW.month, NOW.day, 12, 0});
+	event0.end   = ((date_t){NOW.year, NOW.month, NOW.day, 13, 0});
+	event1.start = ((date_t){NOW.year, NOW.month, NOW.day, 14, 0});
+	event1.end   = ((date_t){NOW.year, NOW.month, NOW.day, 15, 0});
+	todo.due     = ((date_t){NOW.year, NOW.month, NOW.day, 16, 0});
+
+	util_init();
+
+	daemon_config("daemon", NULL, "reminder", "15");
+	daemon_config("daemon", NULL, "notify", "lackey-notify");
+
+	daemon_init();
+	while (NOW.day == EVENTS->start.day) {
+		int delay = step();
+		delay = MIN(delay, rand() % (60*60));
+		NOW = get_date(get_stamp(NOW)+delay);
+	}
+	daemon_exit();
+}