From 3187f472fce1f71955b2b105423c0b079c154f08 Mon Sep 17 00:00:00 2001
From: Lars Westermann <lars-westermann@live.de>
Date: Sat, 8 Jun 2019 22:55:03 +0200
Subject: [PATCH] Update constraint checking

---
 .../kotlin/de/kif/common/ConstraintChecking.kt | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/src/commonMain/kotlin/de/kif/common/ConstraintChecking.kt b/src/commonMain/kotlin/de/kif/common/ConstraintChecking.kt
index a188dc7..d865d8c 100644
--- a/src/commonMain/kotlin/de/kif/common/ConstraintChecking.kt
+++ b/src/commonMain/kotlin/de/kif/common/ConstraintChecking.kt
@@ -40,6 +40,21 @@ fun checkConstraints(
             errors += ConstraintError("Work group requires accessible, but room does not have one!")
         }
 
+        val start = schedule.getAbsoluteStartTime()
+        val end = schedule.getAbsoluteEndTime()
+
+        for (leader in schedule.workGroup.leader) {
+            for (s in against) {
+                if (
+                    leader in s.workGroup.leader &&
+                    start <= s.getAbsoluteEndTime() &&
+                    s.getAbsoluteStartTime() <= end
+                ) {
+                    errors += ConstraintError("Work group with leader $leader cannot be at same time with ${s.workGroup.name}!")
+                }
+            }
+        }
+
         for ((type, constraints) in schedule.workGroup.constraints.groupBy { it.type }) {
             when (type) {
                 ConstraintType.OnlyOnDay -> {
@@ -89,8 +104,6 @@ fun checkConstraints(
                 }
 
                 ConstraintType.NotAtSameTime -> {
-                    val start = schedule.getAbsoluteStartTime()
-                    val end = schedule.getAbsoluteEndTime()
                     for (constraint in constraints) {
                         for (s in against) {
                             if (
@@ -105,7 +118,6 @@ fun checkConstraints(
                 }
 
                 ConstraintType.OnlyAfterWorkGroup -> {
-                    val start = schedule.getAbsoluteStartTime()
                     for (constraint in constraints) {
                         for (s in against) {
                             if (