package Database

import (
	"time"

	"github.com/gofrs/uuid"

	"gorm.io/gorm"
	"gorm.io/gorm/clause"
)

// UserConversation Used to link the current user to their conversations
type UserConversation struct {
	Base
	UserID               uuid.UUID `gorm:"type:uuid;column:user_id;not null;" json:"user_id"`
	User                 User      `                                          json:"user"`
	ConversationDetailID string    `gorm:"not null"                           json:"conversation_detail_id"` // Stored encrypted
	Admin                string    `gorm:"not null"                           json:"admin"`                  // Bool if user is admin of thread, stored encrypted
	SymmetricKey         string    `gorm:"not null"                           json:"symmetric_key"`          // Stored encrypted
	CreatedAt            time.Time `gorm:"not null"                           json:"created_at"`
}

type UserConversationList []UserConversation

func GetUserConversationById(id string) (UserConversation, error) {
	var (
		message UserConversation
		err     error
	)

	err = DB.First(&message, "id = ?", id).
		Error

	return message, err
}

func GetUserConversationsByUserId(id string, page int) ([]UserConversation, error) {
	var (
		conversations []UserConversation
		offset        int
		err           error
	)

	offset = page * PageSize

	err = DB.Offset(offset).
		Limit(PageSize).
		Order("created_at DESC").
		Find(&conversations, "user_id = ?", id).
		Error

	return conversations, err
}

func (userConversation *UserConversation) CreateUserConversation() error {
	var err error

	err = DB.Session(&gorm.Session{FullSaveAssociations: true}).
		Create(userConversation).
		Error

	return err
}

func (userConversations *UserConversationList) CreateUserConversations() error {
	var err error

	err = DB.Create(userConversations).
		Error

	return err
}

func (userConversation *UserConversation) UpdateUserConversation() error {
	var err error

	err = DB.Model(UserConversation{}).
		Updates(userConversation).
		Error

	return err
}

func (userConversations *UserConversationList) UpdateUserConversations() error {
	var err error

	err = DB.Model(UserConversation{}).
		Updates(userConversations).
		Error

	return err
}

func (userConversations *UserConversationList) UpdateOrCreateUserConversations() error {
	var err error

	err = DB.Model(UserConversation{}).
		Clauses(clause.OnConflict{
			Columns:   []clause.Column{{Name: "id"}},
			DoUpdates: clause.AssignmentColumns([]string{"admin"}),
		}).
		Create(userConversations).
		Error

	return err
}

func (userConversation *UserConversation) DeleteUserConversation() error {
	return DB.Session(&gorm.Session{FullSaveAssociations: true}).
		Delete(userConversation).
		Error
}