Save suggestions in a database

.gitignore

@@ -131,3 +131,4 @@ installed_models/
 
 # Misc
 api_keys.db
+suggestions.db

app/app.py

@@ -9,6 +9,7 @@ from app import flood
 from app.language import detect_languages, transliterate
 
 from .api_keys import Database
+from .suggestions import Database as SuggestionsDatabase
 
 from translatehtml import translate_html
 
@@ -617,7 +618,12 @@ def create_app(args):
     @app.route("/suggest", methods=["POST"])
     @limiter.exempt
     def suggest():
-        # TODO:
+        q = request.values.get("q")
+        s = request.values.get("s")
+        source_lang = request.values.get("source")
+        target_lang = request.values.get("target")
+
+        SuggestionsDatabase().add(q, s, source_lang, target_lang)
         return jsonify({"success": True})
 
     SWAGGER_URL = "/docs"  # URL for exposing Swagger UI (without trailing '/')

app/suggestions.py

@@ -0,0 +1,31 @@
+import sqlite3
+import uuid
+
+from expiringdict import ExpiringDict
+
+DEFAULT_DB_PATH = "suggestions.db"
+
+
+class Database:
+    def __init__(self, db_path=DEFAULT_DB_PATH, max_cache_len=1000, max_cache_age=30):
+        self.db_path = db_path
+        self.cache = ExpiringDict(max_len=max_cache_len, max_age_seconds=max_cache_age)
+
+        # Make sure to do data synchronization on writes!
+        self.c = sqlite3.connect(db_path, check_same_thread=False)
+        self.c.execute(
+            """CREATE TABLE IF NOT EXISTS suggestions (
+            "q"	TEXT NOT NULL,
+            "s"	TEXT NOT NULL,
+            "source"	TEXT NOT NULL,
+            "target"	TEXT NOT NULL
+        );"""
+        )
+
+    def add(self, q, s, source, target):
+        self.c.execute(
+            "INSERT INTO suggestions (q, s, source, target) VALUES (?, ?, ?, ?)",
+            (q, s, source, target),
+        )
+        self.c.commit()
+        return True