supabase persistence and multiple api fixes

sql/ddl_1.0.0.sql

@@ -0,0 +1,25 @@
+-- DROP TABLE IF EXISTS rices;
+
+CREATE TABLE rices (
+    id UUID NOT NULL,                      -- Unique identifier
+    slug VARCHAR(75) NOT NULL,             -- Unique user-friendly identifier
+    name VARCHAR(75) NOT NULL,             -- Name of the rice
+    token UUID NOT NULL,                   -- Unique authorization token
+    visits INTEGER DEFAULT 0 NOT NULL,     -- Visit counter, initialized to 0
+    level INTEGER DEFAULT 0 NOT NULL,      -- Level: 0 (Public), 1 (Verified)
+    created_at TIMESTAMP DEFAULT NOW(),    -- Creation date
+    updated_at TIMESTAMP,                  -- Last update date
+    PRIMARY KEY (id, slug),                -- Composite primary key
+    UNIQUE (slug),                         -- Ensure slug is unique
+    UNIQUE (name)                          -- Ensure name is unique
+);
+
+
+CREATE OR REPLACE FUNCTION increment_visits(slug_param TEXT)
+RETURNS VOID AS $$
+BEGIN
+  UPDATE rices
+  SET visits = visits + 1
+  WHERE slug = slug_param;
+END;
+$$ LANGUAGE plpgsql;