From b03b00869391cd70ef1e40561f72dffbd2f47b29 Mon Sep 17 00:00:00 2001
From: Colin Wilk <colin@wilk.cx>
Date: Fri, 30 Oct 2026 10:04:02 +0100
Subject: Initial Commit

---
 registry/models.go | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 registry/models.go

(limited to 'registry/models.go')

diff --git a/registry/models.go b/registry/models.go
new file mode 100644
index 0000000..11e1db8
--- /dev/null
+++ b/registry/models.go
@@ -0,0 +1,75 @@
+// Package registry is responsible for fetching data from the backend registry
+// and providing the data for the UI components.
+package registry
+
+import (
+	"context"
+	"errors"
+	"time"
+)
+
+// ErrNotFound should be returned for missing repositories/manifests.
+var ErrNotFound = errors.New("registry resource not found")
+
+type Provider interface {
+	Repositories(ctx context.Context) ([]Repository, error)
+	Repository(ctx context.Context, name string) (Repository, error)
+	Manifest(ctx context.Context, repository, digest string) (Manifest, error)
+}
+
+type Repository struct {
+	Name      string    `json:"name"`
+	UpdatedAt time.Time `json:"updated_at"`
+	Age       string    `json:"age,omitempty"`
+	Tags      []Tag     `json:"tags"`
+}
+
+type Tag struct {
+	Name           string    `json:"name"`
+	Aliases        []string  `json:"aliases,omitempty"`
+	UpdatedAt      time.Time `json:"updated_at"`
+	Age            string    `json:"age,omitempty"`
+	Platforms      string    `json:"platforms,omitempty"`
+	SizeBytes      int64     `json:"size_bytes,omitempty"`
+	ManifestDigest string    `json:"manifest_digest"`
+}
+
+type Manifest struct {
+	Repository string             `json:"repository"`
+	Digest     string             `json:"digest"`
+	Kind       string             `json:"kind"`                 // "index" for a list; "image" for layers.
+	SizeBytes  int64              `json:"size_bytes,omitempty"` // Registry-reported image total, when available.
+	Tags       []TagReference     `json:"tags"`
+	Platforms  []PlatformManifest `json:"platforms,omitempty"`
+	Layers     []Layer            `json:"layers,omitempty"`
+}
+
+func (m Manifest) TotalSizeBytes() int64 {
+	if m.SizeBytes > 0 {
+		return m.SizeBytes
+	}
+	var total int64
+	for _, layer := range m.Layers {
+		total += layer.SizeBytes
+	}
+	return total
+}
+
+type TagReference struct {
+	Name           string    `json:"name"`
+	UpdatedAt      time.Time `json:"updated_at"`
+	Age            string    `json:"age,omitempty"`
+	ManifestDigest string    `json:"manifest_digest"`
+}
+
+type PlatformManifest struct {
+	Platform  string `json:"platform"`
+	Variant   string `json:"variant,omitempty"`
+	SizeBytes int64  `json:"size_bytes"`
+	Digest    string `json:"digest"`
+}
+
+type Layer struct {
+	Digest    string `json:"digest"`
+	SizeBytes int64  `json:"size_bytes"`
+}
-- 
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