package command

import (
	"golang.org/x/text/language"

	"github.com/zitadel/zitadel/internal/domain"
	"github.com/zitadel/zitadel/internal/eventstore"
	"github.com/zitadel/zitadel/internal/repository/user"
)

type HumanWriteModel struct {
	eventstore.WriteModel

	UserName string

	FirstName         string
	LastName          string
	NickName          string
	DisplayName       string
	PreferredLanguage language.Tag
	Gender            domain.Gender
	Avatar            string

	Email           domain.EmailAddress
	IsEmailVerified bool

	Phone           domain.PhoneNumber
	IsPhoneVerified bool

	Country       string
	Locality      string
	PostalCode    string
	Region        string
	StreetAddress string

	UserState domain.UserState
}

func NewHumanWriteModel(userID, resourceOwner string) *HumanWriteModel {
	return &HumanWriteModel{
		WriteModel: eventstore.WriteModel{
			AggregateID:   userID,
			ResourceOwner: resourceOwner,
		},
	}
}

func (wm *HumanWriteModel) Reduce() error {
	for _, event := range wm.Events {
		switch e := event.(type) {
		case *user.HumanAddedEvent:
			wm.reduceHumanAddedEvent(e)
		case *user.HumanRegisteredEvent:
			wm.reduceHumanRegisteredEvent(e)
		case *user.HumanInitialCodeAddedEvent:
			wm.UserState = domain.UserStateInitial
		case *user.HumanInitializedCheckSucceededEvent:
			wm.UserState = domain.UserStateActive
		case *user.UsernameChangedEvent:
			wm.UserName = e.UserName
		case *user.HumanProfileChangedEvent:
			wm.reduceHumanProfileChangedEvent(e)
		case *user.HumanEmailChangedEvent:
			wm.reduceHumanEmailChangedEvent(e)
		case *user.HumanEmailVerifiedEvent:
			wm.reduceHumanEmailVerifiedEvent()
		case *user.HumanPhoneChangedEvent:
			wm.reduceHumanPhoneChangedEvent(e)
		case *user.HumanPhoneVerifiedEvent:
			wm.reduceHumanPhoneVerifiedEvent()
		case *user.HumanPhoneRemovedEvent:
			wm.reduceHumanPhoneRemovedEvent()
		case *user.HumanAvatarAddedEvent:
			wm.Avatar = e.StoreKey
		case *user.HumanAvatarRemovedEvent:
			wm.Avatar = ""
		case *user.UserLockedEvent:
			if wm.UserState != domain.UserStateDeleted {
				wm.UserState = domain.UserStateLocked
			}
		case *user.UserUnlockedEvent:
			if wm.UserState != domain.UserStateDeleted {
				wm.UserState = domain.UserStateActive
			}
		case *user.UserDeactivatedEvent:
			if wm.UserState != domain.UserStateDeleted {
				wm.UserState = domain.UserStateInactive
			}
		case *user.UserReactivatedEvent:
			if wm.UserState != domain.UserStateDeleted {
				wm.UserState = domain.UserStateActive
			}
		case *user.UserRemovedEvent:
			wm.UserName = ""
			wm.FirstName = ""
			wm.LastName = ""
			wm.NickName = ""
			wm.DisplayName = ""
			wm.PreferredLanguage = language.Und
			wm.Gender = domain.GenderUnspecified
			wm.Avatar = ""
			wm.Email = ""
			wm.IsEmailVerified = false
			wm.Phone = ""
			wm.IsPhoneVerified = false
			wm.Country = ""
			wm.Locality = ""
			wm.PostalCode = ""
			wm.Region = ""
			wm.StreetAddress = ""
			wm.UserState = domain.UserStateDeleted
		case *user.MachineAddedEvent:
			wm.UserName = ""
			wm.FirstName = ""
			wm.LastName = ""
			wm.NickName = ""
			wm.DisplayName = ""
			wm.PreferredLanguage = language.Und
			wm.Gender = domain.GenderUnspecified
			wm.Avatar = ""
			wm.Email = ""
			wm.IsEmailVerified = false
			wm.Phone = ""
			wm.IsPhoneVerified = false
			wm.Country = ""
			wm.Locality = ""
			wm.PostalCode = ""
			wm.Region = ""
			wm.StreetAddress = ""
			wm.UserState = domain.UserStateUnspecified
		}
	}
	return wm.WriteModel.Reduce()
}

func (wm *HumanWriteModel) Query() *eventstore.SearchQueryBuilder {
	return eventstore.NewSearchQueryBuilder(eventstore.ColumnsEvent).
		ResourceOwner(wm.ResourceOwner).
		AddQuery().
		AggregateTypes(user.AggregateType).
		AggregateIDs(wm.AggregateID).
		EventTypes(
			user.HumanAddedType,
			user.HumanRegisteredType,
			user.MachineAddedEventType,
			user.HumanInitialCodeAddedType,
			user.HumanInitializedCheckSucceededType,
			user.UserUserNameChangedType,
			user.HumanProfileChangedType,
			user.HumanEmailChangedType,
			user.HumanEmailVerifiedType,
			user.HumanPhoneChangedType,
			user.HumanPhoneVerifiedType,
			user.HumanPhoneRemovedType,
			user.HumanAvatarAddedType,
			user.HumanAvatarRemovedType,
			user.UserLockedType,
			user.UserUnlockedType,
			user.UserDeactivatedType,
			user.UserReactivatedType,
			user.UserRemovedType,
			user.UserV1AddedType,
			user.UserV1RegisteredType,
			user.UserV1InitialCodeAddedType,
			user.UserV1InitializedCheckSucceededType,
			user.UserV1ProfileChangedType,
			user.UserV1EmailChangedType,
			user.UserV1EmailVerifiedType,
			user.UserV1PhoneChangedType,
			user.UserV1PhoneVerifiedType,
			user.UserV1PhoneRemovedType).
		Builder()
}

func (wm *HumanWriteModel) reduceHumanAddedEvent(e *user.HumanAddedEvent) {
	wm.UserName = e.UserName
	wm.FirstName = e.FirstName
	wm.LastName = e.LastName
	wm.NickName = e.NickName
	wm.DisplayName = e.DisplayName
	wm.PreferredLanguage = e.PreferredLanguage
	wm.Gender = e.Gender
	wm.Avatar = ""
	wm.Email = e.EmailAddress
	wm.IsEmailVerified = false
	wm.Phone = e.PhoneNumber
	wm.IsPhoneVerified = false
	wm.Country = e.Country
	wm.Locality = e.Locality
	wm.PostalCode = e.PostalCode
	wm.Region = e.Region
	wm.StreetAddress = e.StreetAddress
	wm.UserState = domain.UserStateActive
}

func (wm *HumanWriteModel) reduceHumanRegisteredEvent(e *user.HumanRegisteredEvent) {
	wm.UserName = e.UserName
	wm.FirstName = e.FirstName
	wm.LastName = e.LastName
	wm.NickName = e.NickName
	wm.DisplayName = e.DisplayName
	wm.PreferredLanguage = e.PreferredLanguage
	wm.Gender = e.Gender
	wm.Avatar = ""
	wm.Email = e.EmailAddress
	wm.IsEmailVerified = false
	wm.Phone = e.PhoneNumber
	wm.IsPhoneVerified = false
	wm.Country = e.Country
	wm.Locality = e.Locality
	wm.PostalCode = e.PostalCode
	wm.Region = e.Region
	wm.StreetAddress = e.StreetAddress
	wm.UserState = domain.UserStateActive
}

func (wm *HumanWriteModel) reduceHumanProfileChangedEvent(e *user.HumanProfileChangedEvent) {
	if e.FirstName != "" {
		wm.FirstName = e.FirstName
	}
	if e.LastName != "" {
		wm.LastName = e.LastName
	}
	if e.NickName != nil {
		wm.NickName = *e.NickName
	}
	if e.DisplayName != nil {
		wm.DisplayName = *e.DisplayName
	}
	if e.PreferredLanguage != nil {
		wm.PreferredLanguage = *e.PreferredLanguage
	}
	if e.Gender != nil {
		wm.Gender = *e.Gender
	}
}

func (wm *HumanWriteModel) reduceHumanEmailChangedEvent(e *user.HumanEmailChangedEvent) {
	wm.Email = e.EmailAddress
	wm.IsEmailVerified = false
}

func (wm *HumanWriteModel) reduceHumanEmailVerifiedEvent() {
	wm.IsEmailVerified = true
}

func (wm *HumanWriteModel) reduceHumanPhoneChangedEvent(e *user.HumanPhoneChangedEvent) {
	wm.Phone = e.PhoneNumber
	wm.IsPhoneVerified = false
}

func (wm *HumanWriteModel) reduceHumanPhoneVerifiedEvent() {
	wm.IsPhoneVerified = true
}

func (wm *HumanWriteModel) reduceHumanPhoneRemovedEvent() {
	wm.Phone = ""
	wm.IsPhoneVerified = false
}

func (wm *HumanWriteModel) reduceHumanAddressChangedEvent(e *user.HumanAddressChangedEvent) {
	if e.Country != nil {
		wm.Country = *e.Country
	}
	if e.Locality != nil {
		wm.Locality = *e.Locality
	}
	if e.PostalCode != nil {
		wm.PostalCode = *e.PostalCode
	}
	if e.Region != nil {
		wm.Region = *e.Region
	}
	if e.StreetAddress != nil {
		wm.StreetAddress = *e.StreetAddress
	}
}