Implement actual simple repeat commands

src/main.ts

@@ -5,11 +5,12 @@ import {
   PluginSettingTab,
   Setting,
 } from 'obsidian';
+import { DateTime } from 'luxon';
 
 import RepeatView, { REPEATING_NOTES_DUE_VIEW } from './repeat/obsidian/RepeatView';
 import RepeatNoteSetupModal from './repeat/obsidian/RepeatNoteSetupModal';
 import { RepeatPluginSettings, DEFAULT_SETTINGS } from './settings';
-
+import { determineFrontmatterBounds, replaceOrInsertField } from './frontmatter';
 export default class RepeatPlugin extends Plugin {
   settings: RepeatPluginSettings;
 
@@ -59,7 +60,7 @@ export default class RepeatPlugin extends Plugin {
       'clock', 'Review repeating notes that are due', (evt: MouseEvent) => {
         this.activateRepeatNotesDueView();
       });
-    ribbonIconEl.addClass('repeat-pluggin-ribbon-icon');
+    ribbonIconEl.addClass('repeat-plugin-ribbon-icon');
 
     this.addSettingTab(new RepeatPluginSettingTab(this.app, this));
 
@@ -80,6 +81,53 @@ export default class RepeatPlugin extends Plugin {
         return false;
       }
     });
+
+    ['day', 'week', 'month', 'year'].map((unit) => {
+      this.addCommand({
+        id: `repeat-every-${unit}`,
+        name: `Repeat this note every ${unit}`,
+        checkCallback: (checking: boolean) => {
+          const markdownView = this.app.workspace.getActiveViewOfType(MarkdownView);
+          if (markdownView) {
+            if (!checking) {
+              const { editor } = markdownView;
+              let content = editor.getValue();
+              let bounds = determineFrontmatterBounds(content);
+              if (!bounds) {
+                // Create new frontmatter, and update content and bounds.
+                const newFrontmatter = '---\n---\n';
+                editor.replaceRange(
+                  newFrontmatter, { line: 0, ch: 0 }, { line: 0, ch: 0 });
+                content = editor.getValue();
+                bounds = determineFrontmatterBounds(content);
+                if (!bounds) {
+                  const filePath = markdownView.file.path;
+                  throw Error(`Failed to create frontmatter in note ${filePath}.`);
+                }
+              }
+              // Insert repetition properties with the desired frequency.
+              const frontmatter = content.slice(...bounds);
+              const repeatValue = unit === 'day' ? 'daily' : `${unit}ly`;
+              let updatedFrontmatter = replaceOrInsertField(
+                frontmatter, 'repeat', repeatValue);
+              updatedFrontmatter = replaceOrInsertField(
+                updatedFrontmatter,
+                'repeat_due_at',
+                // TODO: Use logic utils to update due date.
+                DateTime.now().plus({ [unit]: 1 }).toISO());
+
+              editor.setValue([
+                content.slice(0, bounds[0]),
+                updatedFrontmatter,
+                content.slice(bounds[1]),
+              ].join(''));
+            }
+            return true;
+          }
+          return false;
+        }
+      });
+    });
   }
 
   onunload() {