71 lines
1.9 KiB
Go
71 lines
1.9 KiB
Go
package chat
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import (
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"errors"
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"strings"
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)
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var (
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ErrDependencyUnavailable = errors.New("dependency unavailable")
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ErrConversationNotFound = errors.New("conversation not found")
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ErrPermissionDenied = errors.New("permission denied")
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ErrInvalidMessage = errors.New("invalid message")
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)
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type Service struct {
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repo *Repository
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}
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func NewService(repo *Repository) *Service {
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return &Service{repo: repo}
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}
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func (s *Service) ListConversations(principal Principal, page, pageSize int) (*PaginatedResult, error) {
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if s.repo == nil {
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return nil, ErrDependencyUnavailable
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}
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return s.repo.ListConversations(principal, page, pageSize)
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}
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func (s *Service) FindConversation(principal Principal, id uint64) (*ConversationDTO, error) {
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if s.repo == nil {
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return nil, ErrDependencyUnavailable
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}
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return s.repo.FindConversation(principal, id)
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}
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func (s *Service) FindOrderConversation(userID uint64, orderID uint64) (*ConversationDTO, error) {
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if s.repo == nil {
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return nil, ErrDependencyUnavailable
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}
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return s.repo.FindOrderConversation(userID, orderID)
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}
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func (s *Service) Messages(principal Principal, conversationID uint64, page, pageSize int) (*PaginatedResult, error) {
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if s.repo == nil {
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return nil, ErrDependencyUnavailable
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}
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return s.repo.Messages(principal, conversationID, page, pageSize)
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}
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func (s *Service) SendMessage(principal Principal, conversationID uint64, req SendMessageRequest) (*MessageDTO, error) {
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if s.repo == nil {
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return nil, ErrDependencyUnavailable
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}
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req.Content = strings.TrimSpace(req.Content)
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if conversationID == 0 || req.Content == "" {
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return nil, ErrInvalidMessage
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}
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if len([]rune(req.Content)) > 1000 {
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return nil, ErrInvalidMessage
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}
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return s.repo.SendMessage(principal, conversationID, req)
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}
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func (s *Service) MarkRead(principal Principal, conversationID uint64) error {
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if s.repo == nil {
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return ErrDependencyUnavailable
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}
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return s.repo.MarkRead(principal, conversationID)
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}
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