add function for logic habit

habit-manager.js

@@ -19,7 +19,10 @@ HabitManager.createHabit = function (name, description, targetCount = 1) {
         id: Math.random(),
         name: name,
         description: description,
-        targetCount: targetCount
+        targetCount: targetCount,
+        completions: [],
+        currentCount: 0,
+        isCompleted: false
     }
 
     this.habits.push(habit)
@@ -27,3 +30,50 @@ HabitManager.createHabit = function (name, description, targetCount = 1) {
     return habit
 }
 
+HabitManager.markHabitDone = function (habitId) {
+    const habit = this.habits.find(h => h.id === habitId);
+
+    if (!habit) {
+        console.error('Привычка не найдена!');
+        return null;
+    }
+
+    const today = new Date().toDateString();
+
+    if (habit.completions.includes(today)) {
+        alert('Вы уже выполняли эту привычку сегодня!');
+        return habit;
+    }
+
+    habit.completions.push(today);
+    habit.currentCount++;
+
+    if (habit.currentCount >= habit.targetCount) {
+        habit.isCompleted = true;
+    }
+
+    // todo далее доработать пересчет статистики
+
+    return habit;
+}
+
+HabitManager.saveToLocalStorage = function () {
+    const data = {
+        habits: this.habits,
+        settings: this.settings,
+        stats: this.stats
+    };
+    localStorage.setItem('habitTrackerData', JSON.stringify(data));
+}
+
+HabitManager.loadFromLocalStorage = function () {
+    const data = localStorage.getItem('habitTrackerData');
+    
+    if (data) {
+        const parsedData = JSON.parse(data);
+        this.habits = parsedData.habits;
+        this.settings = parsedData.settings;
+        this.stats = parsedData.stats;
+    }
+}
+