package management

import (
	"context"
	"github.com/caos/zitadel/internal/user/model"

	"github.com/caos/logging"
	"github.com/caos/zitadel/internal/api/authz"
	caos_errors "github.com/caos/zitadel/internal/errors"
	"github.com/caos/zitadel/internal/eventstore/models"
	iam_model "github.com/caos/zitadel/internal/iam/model"
	"github.com/caos/zitadel/internal/v2/domain"
	"github.com/caos/zitadel/pkg/grpc/management"
	"github.com/golang/protobuf/ptypes"
	"google.golang.org/protobuf/types/known/timestamppb"

	"strconv"
)

func createOidcIdpToDomain(idp *management.OidcIdpConfigCreate) *domain.IDPConfig {
	return &domain.IDPConfig{
		Name:        idp.Name,
		StylingType: idpConfigStylingTypeToDomain(idp.StylingType),
		Type:        domain.IDPConfigTypeOIDC,
		OIDCConfig: &domain.OIDCIDPConfig{
			ClientID:              idp.ClientId,
			ClientSecretString:    idp.ClientSecret,
			Issuer:                idp.Issuer,
			Scopes:                idp.Scopes,
			IDPDisplayNameMapping: oidcMappingFieldToDomain(idp.IdpDisplayNameMapping),
			UsernameMapping:       oidcMappingFieldToDomain(idp.UsernameMapping),
		},
	}
}

func updateIdpToDomain(ctx context.Context, idp *management.IdpUpdate) *domain.IDPConfig {
	return &domain.IDPConfig{
		ObjectRoot: models.ObjectRoot{
			AggregateID: authz.GetCtxData(ctx).OrgID,
		},
		IDPConfigID: idp.Id,
		Name:        idp.Name,
		StylingType: idpConfigStylingTypeToDomain(idp.StylingType),
	}
}

func updateOidcIdpToDomain(ctx context.Context, idp *management.OidcIdpConfigUpdate) *domain.OIDCIDPConfig {
	return &domain.OIDCIDPConfig{
		ObjectRoot: models.ObjectRoot{
			AggregateID: authz.GetCtxData(ctx).OrgID,
		},
		IDPConfigID:           idp.IdpId,
		ClientID:              idp.ClientId,
		ClientSecretString:    idp.ClientSecret,
		Issuer:                idp.Issuer,
		Scopes:                idp.Scopes,
		IDPDisplayNameMapping: oidcMappingFieldToDomain(idp.IdpDisplayNameMapping),
		UsernameMapping:       oidcMappingFieldToDomain(idp.UsernameMapping),
	}
}

func idpFromDomain(idp *domain.IDPConfig) *management.Idp {
	return &management.Idp{
		Id:          idp.IDPConfigID,
		ChangeDate:  timestamppb.New(idp.ChangeDate),
		Sequence:    idp.Sequence,
		Name:        idp.Name,
		StylingType: idpConfigStylingTypeFromDomain(idp.StylingType),
		State:       idpConfigStateFromDomain(idp.State),
		IdpConfig:   idpConfigFromDomain(idp),
	}
}

func idpViewFromModel(idp *iam_model.IDPConfigView) *management.IdpView {
	creationDate, err := ptypes.TimestampProto(idp.CreationDate)
	logging.Log("GRPC-8dju8").OnError(err).Debug("date parse failed")

	changeDate, err := ptypes.TimestampProto(idp.ChangeDate)
	logging.Log("GRPC-Dsj8i").OnError(err).Debug("date parse failed")

	return &management.IdpView{
		Id:            idp.IDPConfigID,
		CreationDate:  creationDate,
		ChangeDate:    changeDate,
		Sequence:      idp.Sequence,
		ProviderType:  idpProviderTypeFromModel(idp.IDPProviderType),
		Name:          idp.Name,
		StylingType:   idpConfigStylingTypeFromModel(idp.StylingType),
		State:         idpConfigStateFromModel(idp.State),
		IdpConfigView: idpConfigViewFromModel(idp),
	}
}

func idpConfigFromDomain(idp *domain.IDPConfig) *management.Idp_OidcConfig {
	if idp.Type == domain.IDPConfigTypeOIDC {
		return &management.Idp_OidcConfig{
			OidcConfig: oidcIdpConfigFromDomain(idp.OIDCConfig),
		}
	}
	return nil
}

func idpConfigFromModel(idp *iam_model.IDPConfig) *management.Idp_OidcConfig {
	if idp.Type == iam_model.IDPConfigTypeOIDC {
		return &management.Idp_OidcConfig{
			OidcConfig: oidcIdpConfigFromModel(idp.OIDCConfig),
		}
	}
	return nil
}

func oidcIdpConfigFromDomain(idp *domain.OIDCIDPConfig) *management.OidcIdpConfig {
	return &management.OidcIdpConfig{
		ClientId:              idp.ClientID,
		Issuer:                idp.Issuer,
		Scopes:                idp.Scopes,
		IdpDisplayNameMapping: oidcMappingFieldFromDomain(idp.IDPDisplayNameMapping),
		UsernameMapping:       oidcMappingFieldFromDomain(idp.UsernameMapping),
	}
}

func oidcIdpConfigFromModel(idp *iam_model.OIDCIDPConfig) *management.OidcIdpConfig {
	return &management.OidcIdpConfig{
		ClientId:              idp.ClientID,
		Issuer:                idp.Issuer,
		Scopes:                idp.Scopes,
		IdpDisplayNameMapping: oidcMappingFieldFromModel(idp.IDPDisplayNameMapping),
		UsernameMapping:       oidcMappingFieldFromModel(idp.UsernameMapping),
	}
}

func idpConfigViewFromModel(idp *iam_model.IDPConfigView) *management.IdpView_OidcConfig {
	if idp.IsOIDC {
		return &management.IdpView_OidcConfig{
			OidcConfig: oidcIdpConfigViewFromModel(idp),
		}
	}
	return nil
}

func oidcIdpConfigViewFromModel(idp *iam_model.IDPConfigView) *management.OidcIdpConfigView {
	return &management.OidcIdpConfigView{
		ClientId:              idp.OIDCClientID,
		Issuer:                idp.OIDCIssuer,
		Scopes:                idp.OIDCScopes,
		IdpDisplayNameMapping: oidcMappingFieldFromModel(idp.OIDCIDPDisplayNameMapping),
		UsernameMapping:       oidcMappingFieldFromModel(idp.OIDCUsernameMapping),
	}
}

func idpConfigStateFromDomain(state domain.IDPConfigState) management.IdpState {
	switch state {
	case domain.IDPConfigStateActive:
		return management.IdpState_IDPCONFIGSTATE_ACTIVE
	case domain.IDPConfigStateInactive:
		return management.IdpState_IDPCONFIGSTATE_INACTIVE
	default:
		return management.IdpState_IDPCONFIGSTATE_UNSPECIFIED
	}
}

func idpConfigStateFromModel(state iam_model.IDPConfigState) management.IdpState {
	switch state {
	case iam_model.IDPConfigStateActive:
		return management.IdpState_IDPCONFIGSTATE_ACTIVE
	case iam_model.IDPConfigStateInactive:
		return management.IdpState_IDPCONFIGSTATE_INACTIVE
	default:
		return management.IdpState_IDPCONFIGSTATE_UNSPECIFIED
	}
}

func idpConfigSearchRequestToModel(request *management.IdpSearchRequest) (*iam_model.IDPConfigSearchRequest, error) {
	convertedSearchRequest := &iam_model.IDPConfigSearchRequest{
		Limit:  request.Limit,
		Offset: request.Offset,
	}
	convertedQueries, err := idpConfigSearchQueriesToModel(request.Queries)
	if err != nil {
		return nil, err
	}
	convertedSearchRequest.Queries = convertedQueries
	return convertedSearchRequest, nil
}

func idpConfigSearchQueriesToModel(queries []*management.IdpSearchQuery) ([]*iam_model.IDPConfigSearchQuery, error) {
	modelQueries := make([]*iam_model.IDPConfigSearchQuery, len(queries))
	for i, query := range queries {
		converted, err := idpConfigSearchQueryToModel(query)
		if err != nil {
			return nil, err
		}
		modelQueries[i] = converted
	}

	return modelQueries, nil
}

func idpConfigSearchQueryToModel(query *management.IdpSearchQuery) (*iam_model.IDPConfigSearchQuery, error) {
	converted := &iam_model.IDPConfigSearchQuery{
		Key:    idpConfigSearchKeyToModel(query.Key),
		Method: searchMethodToModel(query.Method),
		Value:  query.Value,
	}
	if query.Key != management.IdpSearchKey_IDPSEARCHKEY_PROVIDER_TYPE {
		return converted, nil
	}
	value, err := idpProviderTypeStringToModel(query.Value)
	if err != nil {
		return nil, err
	}
	converted.Value = value
	return converted, nil
}

func idpConfigSearchKeyToModel(key management.IdpSearchKey) iam_model.IDPConfigSearchKey {
	switch key {
	case management.IdpSearchKey_IDPSEARCHKEY_IDP_CONFIG_ID:
		return iam_model.IDPConfigSearchKeyIdpConfigID
	case management.IdpSearchKey_IDPSEARCHKEY_NAME:
		return iam_model.IDPConfigSearchKeyName
	case management.IdpSearchKey_IDPSEARCHKEY_PROVIDER_TYPE:
		return iam_model.IDPConfigSearchKeyIdpProviderType
	default:
		return iam_model.IDPConfigSearchKeyUnspecified
	}
}

func idpConfigSearchResponseFromModel(resp *iam_model.IDPConfigSearchResponse) *management.IdpSearchResponse {
	timestamp, err := ptypes.TimestampProto(resp.Timestamp)
	logging.Log("GRPC-KSi8c").OnError(err).Debug("date parse failed")
	return &management.IdpSearchResponse{
		Limit:             resp.Limit,
		Offset:            resp.Offset,
		TotalResult:       resp.TotalResult,
		Result:            idpConfigsFromView(resp.Result),
		ProcessedSequence: resp.Sequence,
		ViewTimestamp:     timestamp,
	}
}

func idpConfigsFromView(viewIdps []*iam_model.IDPConfigView) []*management.IdpView {
	idps := make([]*management.IdpView, len(viewIdps))
	for i, idp := range viewIdps {
		idps[i] = idpViewFromModel(idp)
	}
	return idps
}

func oidcMappingFieldFromDomain(field domain.OIDCMappingField) management.OIDCMappingField {
	switch field {
	case domain.OIDCMappingFieldPreferredLoginName:
		return management.OIDCMappingField_OIDCMAPPINGFIELD_PREFERRED_USERNAME
	case domain.OIDCMappingFieldEmail:
		return management.OIDCMappingField_OIDCMAPPINGFIELD_EMAIL
	default:
		return management.OIDCMappingField_OIDCMAPPINGFIELD_UNSPECIFIED
	}
}

func oidcMappingFieldFromModel(field iam_model.OIDCMappingField) management.OIDCMappingField {
	switch field {
	case iam_model.OIDCMappingFieldPreferredLoginName:
		return management.OIDCMappingField_OIDCMAPPINGFIELD_PREFERRED_USERNAME
	case iam_model.OIDCMappingFieldEmail:
		return management.OIDCMappingField_OIDCMAPPINGFIELD_EMAIL
	default:
		return management.OIDCMappingField_OIDCMAPPINGFIELD_UNSPECIFIED
	}
}

func oidcMappingFieldToDomain(field management.OIDCMappingField) domain.OIDCMappingField {
	switch field {
	case management.OIDCMappingField_OIDCMAPPINGFIELD_PREFERRED_USERNAME:
		return domain.OIDCMappingFieldPreferredLoginName
	case management.OIDCMappingField_OIDCMAPPINGFIELD_EMAIL:
		return domain.OIDCMappingFieldEmail
	default:
		return domain.OIDCMappingFieldUnspecified
	}
}

func oidcMappingFieldToModel(field management.OIDCMappingField) iam_model.OIDCMappingField {
	switch field {
	case management.OIDCMappingField_OIDCMAPPINGFIELD_PREFERRED_USERNAME:
		return iam_model.OIDCMappingFieldPreferredLoginName
	case management.OIDCMappingField_OIDCMAPPINGFIELD_EMAIL:
		return iam_model.OIDCMappingFieldEmail
	default:
		return iam_model.OIDCMappingFieldUnspecified
	}
}

func idpConfigStylingTypeFromDomain(stylingType domain.IDPConfigStylingType) management.IdpStylingType {
	switch stylingType {
	case domain.IDPConfigStylingTypeGoogle:
		return management.IdpStylingType_IDPSTYLINGTYPE_GOOGLE
	default:
		return management.IdpStylingType_IDPSTYLINGTYPE_UNSPECIFIED
	}
}

func idpConfigStylingTypeFromModel(stylingType iam_model.IDPStylingType) management.IdpStylingType {
	switch stylingType {
	case iam_model.IDPStylingTypeGoogle:
		return management.IdpStylingType_IDPSTYLINGTYPE_GOOGLE
	default:
		return management.IdpStylingType_IDPSTYLINGTYPE_UNSPECIFIED
	}
}

func idpConfigStylingTypeToDomain(stylingType management.IdpStylingType) domain.IDPConfigStylingType {
	switch stylingType {
	case management.IdpStylingType_IDPSTYLINGTYPE_GOOGLE:
		return domain.IDPConfigStylingTypeGoogle
	default:
		return domain.IDPConfigStylingTypeUnspecified
	}
}

func idpProviderTypeStringToModel(providerType string) (iam_model.IDPProviderType, error) {
	i, _ := strconv.ParseInt(providerType, 10, 32)
	switch management.IdpProviderType(i) {
	case management.IdpProviderType_IDPPROVIDERTYPE_SYSTEM:
		return iam_model.IDPProviderTypeSystem, nil
	case management.IdpProviderType_IDPPROVIDERTYPE_ORG:
		return iam_model.IDPProviderTypeOrg, nil
	default:
		return 0, caos_errors.ThrowPreconditionFailed(nil, "MGMT-6is9f", "Errors.Org.IDP.InvalidSearchQuery")
	}
}

func externalIDPViewsToDomain(idps []*model.ExternalIDPView) []*domain.ExternalIDP {
	externalIDPs := make([]*domain.ExternalIDP, len(idps))
	for i, idp := range idps {
		externalIDPs[i] = &domain.ExternalIDP{
			ObjectRoot: models.ObjectRoot{
				AggregateID:   idp.UserID,
				ResourceOwner: idp.ResourceOwner,
			},
			IDPConfigID:    idp.IDPConfigID,
			ExternalUserID: idp.ExternalUserID,
			DisplayName:    idp.UserDisplayName,
		}
	}
	return externalIDPs
}