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Monorepo for Tangled
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import ( "encoding/json" "strings"
lexutil "github.com/bluesky-social/indigo/lex/util")
// decodeBlob parses a single JSON-encoded LexBlob as submitted by the markdown// editor. Returns ok=false for malformed JSON or a blob without a CID.func decodeBlob(s string) (*lexutil.LexBlob, bool) { var b lexutil.LexBlob if err := json.Unmarshal([]byte(s), &b); err != nil { return nil, false } if !b.Ref.Defined() { return nil, false } return &b, true}
// ParseBlobs decodes the blob refs submitted by the editor, keeping only those// still referenced in body. Referencing them on the record pins them against// PDS garbage collection; the body filter drops orphans the user removed.func ParseBlobs(raw []string, body string) []*lexutil.LexBlob { return MergeBlobs(nil, raw, body)}
// MergeBlobs unions already-committed blobs with newly-submitted ones, keeping// only CIDs still in body. Used on edit to preserve earlier images.func MergeBlobs(existing []*lexutil.LexBlob, raw []string, body string) []*lexutil.LexBlob { seen := make(map[string]struct{}) var out []*lexutil.LexBlob
keep := func(b *lexutil.LexBlob) { if b == nil || !b.Ref.Defined() { return } cid := b.Ref.String() if _, dup := seen[cid]; dup { return } if !strings.Contains(body, cid) { return } seen[cid] = struct{}{} out = append(out, b) }
for _, b := range existing { keep(b) } for _, s := range raw { if b, ok := decodeBlob(s); ok { keep(b) } }
return out}