ProjectLaogai/app/src/main/java/org/mosad/seil0/projectlaogai/controller/GradesController.kt

59 lines
1.9 KiB
Kotlin

/**
* ProjectLaogai
*
* Copyright 2019-2020 <seil0@mosad.xyz>
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
*/
package org.mosad.seil0.projectlaogai.controller
import org.mosad.seil0.projectlaogai.util.GradeSubject
class GradesController {
/**
* show the difference between 2 grades sets
*/
fun diffGrades(origMap: HashMap<String, ArrayList<GradeSubject>>, diffMap: HashMap<String, ArrayList<GradeSubject>>): ArrayList<GradeSubject> {
val diff = ArrayList<GradeSubject>()
diffMap.values.forEach { semester ->
// if it's the same, no need to compare
if (!origMap.containsValue(semester)) {
semester.forEach { gradeSubject ->
// for each of the grades, check if it differs from the origMap
if (origMap.containsKey(gradeSubject.semester)) {
// a new or changed subject
if (gradeSubject !in origMap[gradeSubject.semester]!!) {
diff.add(gradeSubject)
}
} else {
// a new semester
diff.add(gradeSubject)
}
}
}
}
return diff
}
}