From a223149aee56a1ae6384ab2a7d08f92dddd5d269 Mon Sep 17 00:00:00 2001
From: Dianne Skoll <dianne@skoll.ca>
Date: Tue, 31 Dec 2019 21:09:21 -0500
Subject: [PATCH] Add trigeventstart() and trigeventduration() functions.

---
 src/dorem.c   |  2 ++
 src/funcs.c   | 28 ++++++++++++++++++++++++++++
 src/trigger.c | 34 +++++++++++++++++++++-------------
 src/types.h   |  2 ++
 4 files changed, 53 insertions(+), 13 deletions(-)

diff --git a/src/dorem.c b/src/dorem.c
index 88fbb50c..647fa5c0 100644
--- a/src/dorem.c
+++ b/src/dorem.c
@@ -217,6 +217,8 @@ int ParseRem(ParsePtr s, Trigger *trig, TimeTrig *tim, int save_in_globals)
     trig->warn[0] = 0;
     trig->omitfunc[0] = 0;
     trig->duration_days = 0;
+    trig->eventstart = NO_TIME;
+    trig->eventduration = NO_TIME;
     DBufInit(&(trig->tags));
     trig->passthru[0] = 0;
     tim->ttime = NO_TIME;
diff --git a/src/funcs.c b/src/funcs.c
index aa2e6bd7..31ab6b85 100644
--- a/src/funcs.c
+++ b/src/funcs.c
@@ -129,6 +129,8 @@ static int FTrigdate       (func_info *);
 static int FTrigdatetime   (func_info *);
 static int FTrigdelta      (func_info *);
 static int FTrigduration   (func_info *);
+static int FTrigeventduration(func_info *);
+static int FTrigeventstart (func_info *);
 static int FTrigfrom       (func_info *);
 static int FTrigger        (func_info *);
 static int FTrigpriority   (func_info *);
@@ -276,6 +278,8 @@ BuiltinFunc Func[] = {
     {   "trigdatetime", 0,      0,      0,          FTrigdatetime },
     {   "trigdelta",    0,      0,      0,          FTrigdelta },
     {   "trigduration", 0,      0,      0,          FTrigduration },
+    {   "trigeventduration", 0, 0,      0,          FTrigeventduration },
+    {   "trigeventstart", 0,    0,      0,          FTrigeventstart },
     {   "trigfrom",     0,      0,      0,          FTrigfrom },
     {   "trigger",      1,      3,      0,          FTrigger },
     {   "trigpriority", 0,      0,      0,          FTrigpriority },
@@ -1186,6 +1190,30 @@ static int FTrigtimerep(func_info *info)
     return OK;
 }
 
+static int FTrigeventduration(func_info *info)
+{
+    if (LastTrigger.eventduration == NO_TIME) {
+	RetVal.type = INT_TYPE;
+	RETVAL = -1;
+    } else {
+	RetVal.type = TIME_TYPE;
+	RETVAL = LastTrigger.eventduration;
+    }
+    return OK;
+}
+
+static int FTrigeventstart(func_info *info)
+{
+    if (LastTrigger.eventstart == NO_TIME) {
+	RetVal.type = INT_TYPE;
+	RETVAL = -1;
+    } else {
+	RetVal.type = DATETIME_TYPE;
+	RETVAL = LastTrigger.eventstart;
+    }
+    return OK;
+}
+
 static int FTrigduration(func_info *info)
 {
     if (LastTimeTrig.duration == NO_TIME) {
diff --git a/src/trigger.c b/src/trigger.c
index 0e79a8a0..eec5d03a 100644
--- a/src/trigger.c
+++ b/src/trigger.c
@@ -412,9 +412,18 @@ int
 AdjustTriggerForDuration(int today, int r, Trigger *trig, TimeTrig *tim, int save_in_globals)
 {
     int y, m, d;
+    /* If we have an AT, save the original event start */
+    if (tim->ttime != NO_TIME) {
+	trig->eventstart = MINUTES_PER_DAY * r + tim->ttime;
+	if (tim->duration != NO_TIME) {
+	    trig->eventduration = tim->duration;
+	}
+    }
+
+    /* Now potentially adjust */
     if (r < today && r + trig->duration_days >= today) {
 	/* Adjust duration down */
-	tim->duration -= (today - r) * 1440;
+	tim->duration -= (today - r) * MINUTES_PER_DAY;
 	tim->duration += tim->ttime;
 
 	/* Start at midnight */
@@ -443,14 +452,15 @@ AdjustTriggerForDuration(int today, int r, Trigger *trig, TimeTrig *tim, int sav
 	    fprintf(ErrFp, "\n");
 	}
 
-	if (save_in_globals) {
-	    LastTriggerTime = tim->ttime;
-	    SaveLastTimeTrig(tim);
-	    LastTriggerDate = r;
-	    LastTrigValid = 1;
-	}
-   }
-   return r;
+    }
+    if (save_in_globals) {
+	LastTriggerTime = tim->ttime;
+	SaveLastTimeTrig(tim);
+	SaveLastTrigger(trig);
+	LastTriggerDate = r;
+	LastTrigValid = 1;
+    }
+    return r;
 }
 
 /***************************************************************/
@@ -468,9 +478,7 @@ int ComputeTrigger(int today, Trigger *trig, TimeTrig *tim,
     if (*err != OK) {
 	return r;
     }
-    if (r < today && r + trig->duration_days >= today) {
-	r = AdjustTriggerForDuration(today, r, trig, tim, save_in_globals);
-    }
+    r = AdjustTriggerForDuration(today, r, trig, tim, save_in_globals);
     return r;
 }
 
@@ -647,7 +655,7 @@ ComputeScanStart(int today, Trigger *trig, TimeTrig *tt)
     minutes = tt->ttime + tt->duration;
 
     /* Figure out how many days to scan backwards from */
-    days = minutes / 1440;
+    days = minutes / MINUTES_PER_DAY;
 
     if (trig->scanfrom != NO_DATE) {
 	if (trig->scanfrom <= today - days) {
diff --git a/src/types.h b/src/types.h
index b392c0d1..76a0af7c 100644
--- a/src/types.h
+++ b/src/types.h
@@ -71,6 +71,8 @@ typedef struct {
     int from;
     int priority;
     int duration_days;           /* Duration converted to days to search */
+    int eventstart;              /* Original event start (datetime) */
+    int eventduration;           /* Original event duration (minutes) */
     char sched[VAR_NAME_LEN+1];  /* Scheduling function */
     char warn[VAR_NAME_LEN+1];   /* Warning function    */
     char omitfunc[VAR_NAME_LEN+1]; /* OMITFUNC function */