package store

import (
	"database/sql"
	"time"

	"github.com/alexedwards/scs/postgresstore"
	"github.com/alexedwards/scs/v2"
)

const sessionsSchemaPostgres = `
CREATE TABLE IF NOT EXISTS sessions (
  token TEXT PRIMARY KEY,
  data BYTEA NOT NULL,
  expiry TIMESTAMPTZ NOT NULL
);
CREATE INDEX IF NOT EXISTS sessions_expiry_idx ON sessions (expiry);
`

// applySessionsSchema creates the scs sessions table if missing.
func applySessionsSchema(db *sql.DB) error {
	return applySchema(db, sessionsSchemaPostgres)
}

type sessionStopper interface {
	StopCleanup()
}

// SessionStore returns the scs store backed by this database.
func (s *Store) SessionStore() scs.Store {
	return s.sessionStore
}

func (s *Store) initSessionStore(cleanupInterval time.Duration) {
	ps := postgresstore.NewWithCleanupInterval(s.db, cleanupInterval)
	s.sessionStore = ps
	s.sessionStopper = ps
}