root
44406b72db
Moteva-style AI design workbench replica. Home prompt creates a project; the project page provides an infinite canvas with node drag, zoom/pan, a design chat panel, history replay, image asset upload, and project save/regenerate. - Backend: go-zero, DDD layering, sqlc/pgx, optional PostgreSQL; memory or Redis cache; asynq job queue; MinIO/S3/R2/OSS object storage; sky-valley/pi agent runtime adapter. - Frontend: Next.js App Router + Vite artifact build, TypeScript, i18n, shadcn/ui components, auth (OTP/Turnstile/Google/WeChat). - Deploy: Docker Compose and k3s manifests. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
89 lines
2.2 KiB
Go
89 lines
2.2 KiB
Go
package design
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import (
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"bytes"
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"compress/gzip"
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"encoding/base64"
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"encoding/json"
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"fmt"
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"io"
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"strings"
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"time"
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)
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const CanvasDataPrefix = "SHAKKERDATA://"
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type CanvasSnapshot struct {
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ProjectID string `json:"projectId"`
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Version string `json:"version"`
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SnapshotID string `json:"snapshotId"`
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Viewport Viewport `json:"viewport"`
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Nodes []Node `json:"nodes"`
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Connections []Connection `json:"connections"`
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UpdatedAt string `json:"updatedAt"`
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}
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func EncodeCanvasSnapshot(project Project) (string, error) {
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snapshot := CanvasSnapshot{
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ProjectID: project.ID,
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Version: project.Version,
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SnapshotID: project.SnapshotID,
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Viewport: project.Viewport,
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Nodes: append([]Node(nil), project.Nodes...),
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Connections: append([]Connection(nil), project.Connections...),
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UpdatedAt: project.UpdatedAt.UTC().Format(time.RFC3339Nano),
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}
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payload, err := json.Marshal(snapshot)
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if err != nil {
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return "", err
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}
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var compressed bytes.Buffer
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writer := gzip.NewWriter(&compressed)
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if _, err := writer.Write(payload); err != nil {
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_ = writer.Close()
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return "", err
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}
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if err := writer.Close(); err != nil {
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return "", err
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}
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return CanvasDataPrefix + base64.StdEncoding.EncodeToString(compressed.Bytes()), nil
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}
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func DecodeCanvasSnapshot(canvas string) (CanvasSnapshot, error) {
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canvas = strings.TrimSpace(canvas)
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if !strings.HasPrefix(canvas, CanvasDataPrefix) {
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return CanvasSnapshot{}, fmt.Errorf("%w: canvas snapshot must use %s prefix", ErrInvalidInput, CanvasDataPrefix)
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}
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raw, err := base64.StdEncoding.DecodeString(strings.TrimPrefix(canvas, CanvasDataPrefix))
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if err != nil {
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return CanvasSnapshot{}, err
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}
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reader, err := gzip.NewReader(bytes.NewReader(raw))
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if err != nil {
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return CanvasSnapshot{}, err
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}
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defer reader.Close()
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payload, err := io.ReadAll(reader)
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if err != nil {
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return CanvasSnapshot{}, err
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}
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var snapshot CanvasSnapshot
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if err := json.Unmarshal(payload, &snapshot); err != nil {
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return CanvasSnapshot{}, err
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}
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return snapshot, nil
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}
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func CanvasVersion(now time.Time) string {
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if now.IsZero() {
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now = time.Now()
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}
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return fmt.Sprintf("%d", now.UnixMilli())
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}
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