-- Enable pgvector extension
CREATE EXTENSION IF NOT EXISTS vector;

-- Session table for connect-pg-simple
CREATE TABLE IF NOT EXISTS "session" (
  "sid" varchar NOT NULL COLLATE "default",
  "sess" json NOT NULL,
  "expire" timestamp(6) NOT NULL,
  CONSTRAINT "session_pkey" PRIMARY KEY ("sid")
) WITH (OIDS=FALSE);

CREATE INDEX IF NOT EXISTS "IDX_session_expire" ON "session" ("expire");

-- Documents table for RAG
CREATE TABLE IF NOT EXISTS documents (
  id SERIAL PRIMARY KEY,
  path TEXT UNIQUE NOT NULL,
  filename TEXT NOT NULL,
  content TEXT NOT NULL,
  embedding vector(768),
  collection TEXT NOT NULL,
  uploaded_by TEXT NOT NULL,
  created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
);

CREATE INDEX IF NOT EXISTS idx_documents_collection ON documents(collection);