Implement Task 16: Murphy Grammar Engine & Handwritten Journaling

app/static/js/modules/api.js

@@ -248,5 +248,57 @@ export const api = {
             if (resp.ok) return await resp.json();
             throw new Error(`Failed to reset level: ${resp.status}`);
         }
+    },
+
+    // Murphy Grammar Engine & Handwritten Journaling (Task 16)
+    grammar: {
+        async getUnits() {
+            const resp = await fetch('/api/grammar/units');
+            if (resp.ok) return await resp.json();
+            throw new Error(`Failed to load grammar units: ${resp.status}`);
+        },
+        async getUnit(id) {
+            const resp = await fetch(`/api/grammar/units/${id}`);
+            if (resp.ok) return await resp.json();
+            throw new Error(`Failed to load grammar unit ${id}: ${resp.status}`);
+        },
+        async submitAnswer(unitId, exerciseIdx, selectedOption) {
+            const resp = await fetch('/api/grammar/answer', {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({
+                    unit_id: unitId,
+                    exercise_idx: exerciseIdx,
+                    selected_option: selectedOption
+                })
+            });
+            if (resp.ok) return await resp.json();
+            throw new Error(`Failed to submit grammar answer: ${resp.status}`);
+        },
+        async completeUnit(unitId, score, handwrittenLogged = false) {
+            const resp = await fetch('/api/grammar/complete', {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({
+                    unit_id: unitId,
+                    score: score,
+                    handwritten_logged: handwrittenLogged
+                })
+            });
+            if (resp.ok) return await resp.json();
+            throw new Error(`Failed to complete unit: ${resp.status}`);
+        },
+        async toggleHandwritten(unitId, handwritten) {
+            const resp = await fetch('/api/grammar/handwritten', {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({
+                    unit_id: unitId,
+                    handwritten: handwritten
+                })
+            });
+            if (resp.ok) return await resp.json();
+            throw new Error(`Failed to update handwritten status: ${resp.status}`);
+        }
     }
 };