Commands to increment/decrement current date (#193)

* Adds a command for quickly inserting the current date from the default calendar.

* Add comments describing new function.

* Fix insert command so that cursor moves to end of inserted text.

* Brute force working increment/decrement.

* Cleaned up implementation of new commands.

Author: sholder

src/main.ts

@@ -11,6 +11,8 @@ import { SettingsService } from "./settings/settings.service";
 import {
     type CalendarStore,
     createCalendarStore,
+    incrementDay,
+    decrementDay,
 } from "./stores/calendar.store";
 import { CodeBlockService } from "./calendar/codeblock";
 import { DEFAULT_FORMAT } from "./utils/constants";
@@ -193,6 +195,35 @@ export default class Calendarium extends Plugin {
                 this.addCalendarView();
             },
         });
+
+        this.addCommand({
+            id: "insert-calendarium-current-date",
+            name: "Insert Current Date",
+            /* Insert the current date from the default calendar at the current cursor location. */
+            editorCallback: (editor: Editor, view: MarkdownView) => {
+                this.insertCurrentDate(this.settings$.getDefaultCalendar(), editor, this.api);
+            },
+        });
+
+        this.addCommand({
+            id: "advance-calendarium-current-date",
+            name: "Set Current Date to Next",
+            callback: () => {
+                const defaultCal = this.settings$.getDefaultCalendar();
+                const store = this.getStoreByCalendar(defaultCal);
+                this.changeDay(defaultCal, store, incrementDay);
+            },
+        });
+
+        this.addCommand({
+            id: "previous-calendarium-current-date",
+            name: "Set Current Date to Previous",
+            callback: () => {
+                const defaultCal = this.settings$.getDefaultCalendar();
+                const store = this.getStoreByCalendar(defaultCal);
+                this.changeDay(defaultCal, store, decrementDay);
+            },
+        });
     }
 
     addCalendarView(params: { full?: boolean; startup?: boolean } = {}) {
@@ -216,4 +247,23 @@ export default class Calendarium extends Plugin {
 
         return leaf;
     }
+
+    insertCurrentDate(calendar: Calendar, editor: Editor, api: API) {
+        const currentCalDate = calendar.current;
+        const calendarApi = api.getAPI(calendar.name);
+        const dateString = calendarApi.toDisplayDate(currentCalDate, calendar.dateFormat);
+        const cursor = editor.getCursor();
+        editor.replaceRange(dateString, cursor);
+        cursor.ch += dateString.length;
+        editor.setCursor(cursor);
+    }
+
+    changeDay(
+        calendar: Calendar,
+        store: CalendarStore,
+        changeFunction: (date: CalDate, yearCalculator: YearStoreCache, config: StaticCalendarData) => CalDate) {
+        const currentCalDate = calendar.current;
+        const newDay = changeFunction(currentCalDate, store.yearCalculator, store.staticStore.staticData);
+        store.setCurrentDate(newDay);
+    }
 }

src/stores/calendar.store.ts

@@ -609,7 +609,7 @@ function decrementMonth(
     return next;
 }
 
-function incrementDay(
+export function incrementDay(
     date: CalDate,
     yearCalculator: YearStoreCache,
     config: StaticCalendarData
@@ -627,7 +627,7 @@ function incrementDay(
     }
     return next;
 }
-function decrementDay(
+export function decrementDay(
     date: CalDate,
     yearCalculator: YearStoreCache,
     config: StaticCalendarData