package session

import (
	"errors"
	"lishwist/http/internal/id"

	"github.com/gorilla/securecookie"
	"github.com/gorilla/sessions"
)

var inMemStore = make(map[string]string)

var errNotFound = errors.New("not found")

func NewInMemoryStore(keyPairs ...[]byte) *Store {
	return &Store{
		callbacks: Callbacks{
			Delete: func(key string) error {
				delete(inMemStore, key)
				return nil
			},
			Insert: func(encodedValues string) (string, error) {
				key := id.Generate()
				inMemStore[key] = encodedValues
				return key, nil
			},
			Select: func(key string) (string, error) {
				encodedValues, ok := inMemStore[key]
				if !ok {
					return "", errNotFound
				}
				return encodedValues, nil
			},
			Update: func(key string, encodedValues string) error {
				inMemStore[key] = encodedValues
				return nil
			},
		},
		Codecs:  securecookie.CodecsFromPairs(keyPairs...),
		Options: &sessions.Options{},
	}
}