feat: move or copy dialog with folder suggestions and a rule for what is already there

internal/proto/proto.go

@@ -87,6 +87,7 @@ const (
 	TaskFSDownload = "fs.download" // read a whole file (larger cap) for browser download
 	TaskFSStat     = "fs.stat"     // a file's properties: type, size, mode, owner
 	TaskFSChmod    = "fs.chmod"    // change mode and owner, of a folder's contents too
+	TaskFSCopy     = "fs.copy"     // copy or move, with a rule for what is already there
 	TaskFSPut      = "fs.put"      // write a file the browser sends in pieces
 	TaskFSSend     = "fs.send"     // send a file to the browser in pieces
 
@@ -178,6 +179,17 @@ type FSChmodArgs struct {
 	Only      string  `json:"only,omitempty"`
 }
 
+// FSCopyArgs are the arguments of TaskFSCopy: Src goes to Dst (the full new
+// path), copied or, with Move, moved. Conflict says what to do when Dst is
+// already there: "error" (the default) stops, "replace" puts Src in its place,
+// "skip" keeps it. Folders on both sides are merged under replace and skip.
+type FSCopyArgs struct {
+	Src      string `json:"src"`
+	Dst      string `json:"dst"`
+	Move     bool   `json:"move,omitempty"`
+	Conflict string `json:"conflict,omitempty"`
+}
+
 // FSEntry is one directory entry.
 type FSEntry struct {
 	Name  string `json:"name"`