fix: pin added did documents to local ipfs node

x/did/keeper/ipfs.go

@@ -1 +1,56 @@
 package keeper
+
+import (
+	sdk "github.com/cosmos/cosmos-sdk/types"
+	"github.com/ipfs/boxo/files"
+	"github.com/ipfs/boxo/path"
+	"github.com/ipfs/kubo/core/coreiface/options"
+)
+
+// AddToLocalIPFS adds a file to the local IPFS node
+func (k Keeper) AddToLocalIPFS(ctx sdk.Context, data files.Node) (string, error) {
+	cid, err := k.ipfsClient.Unixfs().Add(ctx, data)
+	if err != nil {
+		return "", err
+	}
+	return cid.String(), nil
+}
+
+// GetFromLocalIPFS gets a file from the local IPFS node
+func (k Keeper) GetFromLocalIPFS(ctx sdk.Context, cid string) (files.Node, error) {
+	path, err := path.NewPath(cid)
+	if err != nil {
+		return nil, err
+	}
+	return k.ipfsClient.Unixfs().Get(ctx, path)
+}
+
+// HasPathInLocalIPFS checks if a file is in the local IPFS node
+func (k Keeper) HasPathInLocalIPFS(ctx sdk.Context, cid string) (bool, error) {
+	path, err := path.NewPath(cid)
+	if err != nil {
+		return false, err
+	}
+	v, err := k.ipfsClient.Unixfs().Get(ctx, path)
+	if err != nil {
+		return false, err
+	}
+
+	if v == nil {
+		return false, nil
+	}
+	return true, nil
+}
+
+// PinToLocalIPFS pins a file to the local IPFS node
+func (k Keeper) PinToLocalIPFS(ctx sdk.Context, cid string, name string) error {
+	path, err := path.NewPath(cid)
+	if err != nil {
+		return err
+	}
+	err = k.ipfsClient.Pin().Add(ctx, path, options.Pin.Name(name))
+	if err != nil {
+		return err
+	}
+	return nil
+}