refactor code to fewer files; remove unused code

core/user_signup_session.go

@@ -0,0 +1,174 @@
+package core
+
+import (
+	"errors"
+	"fmt"
+	"github.com/google/uuid"
+	"go-nkode/hashset"
+	py "go-nkode/py-builtin"
+	"go-nkode/util"
+)
+
+type UserSignSession struct {
+	Id                  SessionId
+	CustomerId          CustomerId
+	LoginUserInterface  UserInterface
+	Kp                  KeypadDimension
+	SetIdxInterface     IdxInterface
+	ConfirmIdxInterface IdxInterface
+	SetKeySelection     KeySelection
+	Username            Username
+	Expire              int
+}
+
+func NewSignupSession(username Username, kp KeypadDimension, customerId CustomerId, svgInterface SvgIdInterface) (*UserSignSession, error) {
+	loginInterface, err := NewUserInterface(&kp, svgInterface)
+	if err != nil {
+		return nil, err
+	}
+	signupInterface, err := signupInterface(*loginInterface, kp)
+	if err != nil {
+		return nil, err
+	}
+	session := UserSignSession{
+		Id:                  SessionId(uuid.New()),
+		CustomerId:          customerId,
+		LoginUserInterface:  *loginInterface,
+		SetIdxInterface:     signupInterface.IdxInterface,
+		ConfirmIdxInterface: nil,
+		SetKeySelection:     nil,
+		Username:            username,
+		Kp:                  kp,
+	}
+
+	return &session, nil
+}
+
+func (s *UserSignSession) DeducePasscode(confirmKeyEntry KeySelection) ([]int, error) {
+	validEntry := py.All[int](confirmKeyEntry, func(i int) bool {
+		return 0 <= i && i < s.Kp.NumbOfKeys
+	})
+
+	if !validEntry {
+		return nil, errors.New(fmt.Sprintf("Invalid Key entry. One or more key index: %#v, not in range 0-%d", confirmKeyEntry, s.Kp.NumbOfKeys))
+	}
+
+	if s.SetIdxInterface == nil {
+		return nil, errors.New("signup session set interface is nil")
+	}
+
+	if s.ConfirmIdxInterface == nil {
+		return nil, errors.New("signup session confirm interface is nil")
+	}
+
+	if s.SetKeySelection == nil {
+		return nil, errors.New("signup session set key entry is nil")
+	}
+
+	if s.Username == "" {
+		return nil, errors.New("signup session username is nil")
+	}
+
+	if len(confirmKeyEntry) != len(s.SetKeySelection) {
+		return nil, errors.New(fmt.Sprintf("confirm and set key entry lenght mismatch %d != %d", len(confirmKeyEntry), len(s.SetKeySelection)))
+	}
+
+	passcodeLen := len(confirmKeyEntry)
+	setKeyVals, err := s.getSelectedKeyVals(s.SetKeySelection, s.SetIdxInterface)
+	if err != nil {
+		return nil, err
+	}
+	confirmKeyVals, err := s.getSelectedKeyVals(confirmKeyEntry, s.ConfirmIdxInterface)
+	passcode := make([]int, passcodeLen)
+
+	for idx := 0; idx < passcodeLen; idx++ {
+		setKey := hashset.NewSetFromSlice[int](setKeyVals[idx])
+		confirmKey := hashset.NewSetFromSlice[int](confirmKeyVals[idx])
+		intersection := setKey.Intersect(confirmKey)
+		if intersection.Size() < 1 {
+			return nil, errors.New(fmt.Sprintf("set and confirm do not intersect at index %d", idx))
+		}
+		if intersection.Size() > 1 {
+			return nil, errors.New(fmt.Sprintf("set and confirm intersect at more than one point at index %d", idx))
+		}
+		intersectionSlice := intersection.ToSlice()
+		passcode[idx] = intersectionSlice[0]
+	}
+	return passcode, nil
+}
+
+func (s *UserSignSession) SetUserNKode(keySelection KeySelection) (IdxInterface, error) {
+	validKeySelection := py.All[int](keySelection, func(i int) bool {
+		return 0 <= i && i < s.Kp.NumbOfKeys
+	})
+	if !validKeySelection {
+		return nil, errors.New(fmt.Sprintf("one or key selection is out of range 0-%d", s.Kp.NumbOfKeys-1))
+	}
+
+	s.SetKeySelection = keySelection
+	setKp := s.SignupKeypad()
+	setInterface := UserInterface{IdxInterface: s.SetIdxInterface, Kp: &setKp}
+	err := setInterface.DisperseInterface()
+	if err != nil {
+		return nil, err
+	}
+	s.ConfirmIdxInterface = setInterface.IdxInterface
+	return s.ConfirmIdxInterface, nil
+}
+
+func (s *UserSignSession) getSelectedKeyVals(keySelections KeySelection, userInterface []int) ([][]int, error) {
+	signupKp := s.SignupKeypad()
+	keypadInterface, err := util.ListToMatrix(userInterface, signupKp.AttrsPerKey)
+	if err != nil {
+		return nil, err
+	}
+	keyVals := make([][]int, len(keySelections))
+
+	for idx, keyIdx := range keySelections {
+		keyVals[idx] = keypadInterface[keyIdx]
+	}
+	return keyVals, nil
+}
+
+func signupInterface(baseUserInterface UserInterface, kp KeypadDimension) (*UserInterface, error) {
+	if kp.IsDispersable() {
+		return nil, errors.New("keypad is dispersable, can't use signupInterface")
+	}
+	err := baseUserInterface.RandomShuffle()
+	if err != nil {
+		return nil, err
+	}
+	interfaceMatrix, err := baseUserInterface.InterfaceMatrix()
+	if err != nil {
+		return nil, err
+	}
+	attrSetView, err := util.MatrixTranspose(interfaceMatrix)
+	if err != nil {
+		return nil, err
+	}
+	err = util.FisherYatesShuffle[[]int](&attrSetView)
+	if err != nil {
+		return nil, err
+	}
+	numbOfKeys := kp.NumbOfKeys
+	attrSetView = attrSetView[:numbOfKeys]
+	attrSetView, err = util.MatrixTranspose(attrSetView)
+	if err != nil {
+		return nil, err
+	}
+	signupUserInterface := UserInterface{
+		IdxInterface: util.MatrixToList(attrSetView),
+		Kp: &KeypadDimension{
+			AttrsPerKey: numbOfKeys,
+			NumbOfKeys:  numbOfKeys,
+		},
+	}
+	return &signupUserInterface, nil
+}
+
+func (s *UserSignSession) SignupKeypad() KeypadDimension {
+	return KeypadDimension{
+		AttrsPerKey: s.Kp.NumbOfKeys,
+		NumbOfKeys:  s.Kp.NumbOfKeys,
+	}
+}