phase 2

src/lib/progress-service.ts

@@ -0,0 +1,71 @@
+import { supabase } from '@/lib/supabase'
+
+interface TestResultData {
+  partId: number
+  partName: string
+  score: number
+  total: number
+  timeUsed: number
+  answers: { questionId: string; selected: number | null; correct: boolean }[]
+}
+
+/** Fire-and-forget: save test result. Failures are logged but don't block UI. */
+export async function saveTestResult(userId: string, data: TestResultData): Promise<void> {
+  const { error } = await supabase.from('user_progress').insert({
+    user_id: userId,
+    type: 'test',
+    data,
+  })
+  if (error) console.error('Failed to save test result:', error.message)
+}
+
+/** Fire-and-forget: save writing submission with AI feedback. */
+export async function saveWritingSubmission(
+  userId: string,
+  content: string,
+  feedback: object,
+): Promise<void> {
+  const { error } = await supabase.from('writing_submissions').insert({
+    user_id: userId,
+    content,
+    feedback,
+  })
+  if (error) console.error('Failed to save writing submission:', error.message)
+}
+
+/** Count today's writing submissions for server-side rate limiting (authenticated users). */
+export async function countTodayWritingSubmissions(userId: string): Promise<number> {
+  const today = new Date().toISOString().split('T')[0]
+  const { count, error } = await supabase
+    .from('writing_submissions')
+    .select('*', { count: 'exact', head: true })
+    .eq('user_id', userId)
+    .gte('created_at', `${today}T00:00:00.000Z`)
+  if (error) return 0
+  return count ?? 0
+}
+
+/** Fetch test history for a user (most recent first, max 20). */
+export async function fetchTestHistory(userId: string) {
+  const { data, error } = await supabase
+    .from('user_progress')
+    .select('*')
+    .eq('user_id', userId)
+    .eq('type', 'test')
+    .order('created_at', { ascending: false })
+    .limit(20)
+  if (error) throw error
+  return data ?? []
+}
+
+/** Fetch writing history for a user (most recent first, max 20). */
+export async function fetchWritingHistory(userId: string) {
+  const { data, error } = await supabase
+    .from('writing_submissions')
+    .select('id, content, feedback, created_at')
+    .eq('user_id', userId)
+    .order('created_at', { ascending: false })
+    .limit(20)
+  if (error) throw error
+  return data ?? []
+}