refactor: tidy structure of source files

Fixes #79

src/things/abstract/academic-term.ts

@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2019 StApps
+ * 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, version 3.
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ */
+import {SCMetaTranslations} from '../../general/i18n';
+import {SCISO8601Date} from '../../general/time';
+import {SCThing, SCThingMeta, SCThingWithoutReferences} from './thing';
+
+/**
+ * An academic term without references
+ */
+export interface SCAcademicTermWithoutReferences
+  extends SCThingWithoutReferences {
+  /**
+   * Short name of the academic term, using the given pattern
+   *
+   * @aggregatable
+   * @keyword
+   */
+  acronym: string;
+
+  /**
+   * End date of the academic term
+   */
+  endDate: SCISO8601Date;
+
+  /**
+   * End date of lectures in the academic term
+   */
+  eventsEndDate?: SCISO8601Date;
+
+  /**
+   * Start date of lectures in the academic term
+   */
+  eventsStartDate?: SCISO8601Date;
+
+  /**
+   * Start date of the academic term
+   */
+  startDate: SCISO8601Date;
+}
+
+/**
+ * An academic term
+ */
+export interface SCAcademicTerm
+  extends SCAcademicTermWithoutReferences, SCThing {
+  // noop
+}
+
+/**
+ * Meta information about academic terms
+ */
+export class SCAcademicTermWithoutReferencesMeta
+  extends SCThingMeta implements SCMetaTranslations<SCThing> {
+  /**
+   * Translations of fields
+   */
+  fieldTranslations = {
+    de: {
+      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.de,
+      acronym: 'Akronym',
+      endDate: 'Enddatum',
+      eventsEndDate: 'Enddatum der Veranstaltungen',
+      eventsStartDate: 'Startdatum der Veranstaltungen',
+      startDate: 'Startdatum',
+    },
+    en: {
+      ...SCThingMeta.getInstance<SCThingMeta>().fieldTranslations.en,
+      acronym: 'acronym',
+      endDate: 'end date',
+      eventsEndDate: 'end date of events',
+      eventsStartDate: 'start date of events',
+      startDate: 'start date',
+    },
+  };
+
+  /**
+   * Translations of values of fields
+   */
+  fieldValueTranslations = {
+    de: {
+      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.de,
+    },
+    en: {
+      ...SCThingMeta.getInstance<SCThingMeta>().fieldValueTranslations.en,
+    },
+  };
+}