update

backend/database.py

@@ -65,6 +65,7 @@ CREATE TABLE IF NOT EXISTS baustein_progress (
     baustein TEXT NOT NULL,
     gute_antworten INTEGER NOT NULL DEFAULT 0,
     absolviert TEXT,
+    verstanden TEXT,
     updated_at TEXT NOT NULL,
     PRIMARY KEY (topic, baustein)
 )
@@ -96,6 +97,10 @@ async def init_db():
         await db.execute("ALTER TABLE guides ADD COLUMN step INTEGER")
     except aiosqlite.OperationalError:
         pass
+    try:  # Migration für Bestands-DBs ohne verstanden-Spalte (Mastery-Stufe)
+        await db.execute("ALTER TABLE baustein_progress ADD COLUMN verstanden TEXT")
+    except aiosqlite.OperationalError:
+        pass
     # Migration: alte vertiefungen-Tabelle → baustein_texte (Bestand = lange Form, art 'deepdive')
     cursor = await db.execute("SELECT name FROM sqlite_master WHERE type = 'table' AND name = 'vertiefungen'")
     if await cursor.fetchone():
@@ -333,29 +338,41 @@ async def list_vertiefungen(topic: str) -> dict[str, set[str]]:
 async def list_baustein_progress(topic: str) -> list[dict]:
     db = await get_db()
     cursor = await db.execute(
-        "SELECT baustein, gute_antworten, absolviert FROM baustein_progress WHERE topic = ?", (topic,)
+        "SELECT baustein, gute_antworten, absolviert, verstanden FROM baustein_progress WHERE topic = ?", (topic,)
     )
     rows = await cursor.fetchall()
-    return [{"baustein": b, "gute_antworten": n, "absolviert": a} for b, n, a in rows]
+    return [{"baustein": b, "gute_antworten": n, "absolviert": a, "verstanden": v} for b, n, a, v in rows]
 
 
-async def add_gute_antwort(topic: str, baustein: str) -> int:
-    """Zählt eine gut bewertete Antwort und liefert den neuen Stand."""
+async def set_baustein_score(topic: str, baustein: str, score: int) -> int:
+    """Setzt den Score absolut (vom Aufrufer geclampt) und liefert ihn zurück."""
     db = await get_db()
     await db.execute(
         """INSERT INTO baustein_progress (topic, baustein, gute_antworten, updated_at)
-           VALUES (?, ?, 1, ?)
+           VALUES (?, ?, ?, ?)
            ON CONFLICT(topic, baustein) DO UPDATE SET
-               gute_antworten = gute_antworten + 1, updated_at = excluded.updated_at""",
-        (topic, baustein, _now()),
+               gute_antworten = excluded.gute_antworten, updated_at = excluded.updated_at""",
+        (topic, baustein, score, _now()),
     )
     await db.commit()
-    cursor = await db.execute(
-        "SELECT gute_antworten FROM baustein_progress WHERE topic = ? AND baustein = ?",
-        (topic, baustein),
+    return score
+
+
+async def set_baustein_verstanden(topic: str, baustein: str) -> bool:
+    """Markiert verstanden (Mastery); True nur beim ersten Mal. Sticky wie absolviert."""
+    db = await get_db()
+    now = _now()
+    await db.execute(
+        "INSERT OR IGNORE INTO baustein_progress (topic, baustein, gute_antworten, updated_at) VALUES (?, ?, 0, ?)",
+        (topic, baustein, now),
     )
-    row = await cursor.fetchone()
-    return row[0] if row else 0
+    cursor = await db.execute(
+        "UPDATE baustein_progress SET verstanden = ?, updated_at = ? "
+        "WHERE topic = ? AND baustein = ? AND verstanden IS NULL",
+        (now, now, topic, baustein),
+    )
+    await db.commit()
+    return cursor.rowcount > 0
 
 
 async def set_baustein_absolviert(topic: str, baustein: str) -> bool: