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package session
import (
"context"
"database/sql"
"github.com/google/uuid"
"github.com/opencode-ai/opencode/internal/db"
"github.com/opencode-ai/opencode/internal/pubsub"
)
type Session struct {
ID string
ParentSessionID string
Title string
MessageCount int64
PromptTokens int64
CompletionTokens int64
Cost float64
Summary string
SummarizedAt int64
CreatedAt int64
UpdatedAt int64
}
type Service interface {
pubsub.Suscriber[Session]
Create(ctx context.Context, title string) (Session, error)
CreateTitleSession(ctx context.Context, parentSessionID string) (Session, error)
CreateTaskSession(ctx context.Context, toolCallID, parentSessionID, title string) (Session, error)
Get(ctx context.Context, id string) (Session, error)
List(ctx context.Context) ([]Session, error)
Save(ctx context.Context, session Session) (Session, error)
Delete(ctx context.Context, id string) error
}
type service struct {
*pubsub.Broker[Session]
q db.Querier
}
func (s *service) Create(ctx context.Context, title string) (Session, error) {
dbSession, err := s.q.CreateSession(ctx, db.CreateSessionParams{
ID: uuid.New().String(),
Title: title,
})
if err != nil {
return Session{}, err
}
session := s.fromDBItem(dbSession)
s.Publish(pubsub.CreatedEvent, session)
return session, nil
}
func (s *service) CreateTaskSession(ctx context.Context, toolCallID, parentSessionID, title string) (Session, error) {
dbSession, err := s.q.CreateSession(ctx, db.CreateSessionParams{
ID: toolCallID,
ParentSessionID: sql.NullString{String: parentSessionID, Valid: true},
Title: title,
})
if err != nil {
return Session{}, err
}
session := s.fromDBItem(dbSession)
s.Publish(pubsub.CreatedEvent, session)
return session, nil
}
func (s *service) CreateTitleSession(ctx context.Context, parentSessionID string) (Session, error) {
dbSession, err := s.q.CreateSession(ctx, db.CreateSessionParams{
ID: "title-" + parentSessionID,
ParentSessionID: sql.NullString{String: parentSessionID, Valid: true},
Title: "Generate a title",
})
if err != nil {
return Session{}, err
}
session := s.fromDBItem(dbSession)
s.Publish(pubsub.CreatedEvent, session)
return session, nil
}
func (s *service) Delete(ctx context.Context, id string) error {
session, err := s.Get(ctx, id)
if err != nil {
return err
}
err = s.q.DeleteSession(ctx, session.ID)
if err != nil {
return err
}
s.Publish(pubsub.DeletedEvent, session)
return nil
}
func (s *service) Get(ctx context.Context, id string) (Session, error) {
dbSession, err := s.q.GetSessionByID(ctx, id)
if err != nil {
return Session{}, err
}
return s.fromDBItem(dbSession), nil
}
func (s *service) Save(ctx context.Context, session Session) (Session, error) {
summary := sql.NullString{}
if session.Summary != "" {
summary.String = session.Summary
summary.Valid = true
}
summarizedAt := sql.NullInt64{}
if session.SummarizedAt != 0 {
summarizedAt.Int64 = session.SummarizedAt
summarizedAt.Valid = true
}
dbSession, err := s.q.UpdateSession(ctx, db.UpdateSessionParams{
ID: session.ID,
Title: session.Title,
PromptTokens: session.PromptTokens,
CompletionTokens: session.CompletionTokens,
Cost: session.Cost,
Summary: summary,
SummarizedAt: summarizedAt,
})
if err != nil {
return Session{}, err
}
session = s.fromDBItem(dbSession)
s.Publish(pubsub.UpdatedEvent, session)
return session, nil
}
func (s *service) List(ctx context.Context) ([]Session, error) {
dbSessions, err := s.q.ListSessions(ctx)
if err != nil {
return nil, err
}
sessions := make([]Session, len(dbSessions))
for i, dbSession := range dbSessions {
sessions[i] = s.fromDBItem(dbSession)
}
return sessions, nil
}
func (s service) fromDBItem(item db.Session) Session {
return Session{
ID: item.ID,
ParentSessionID: item.ParentSessionID.String,
Title: item.Title,
MessageCount: item.MessageCount,
PromptTokens: item.PromptTokens,
CompletionTokens: item.CompletionTokens,
Cost: item.Cost,
Summary: item.Summary.String,
SummarizedAt: item.SummarizedAt.Int64,
CreatedAt: item.CreatedAt,
UpdatedAt: item.UpdatedAt,
}
}
func NewService(q db.Querier) Service {
broker := pubsub.NewBroker[Session]()
return &service{
broker,
q,
}
}
|
