let text_dir = Filename.concat (File_store.txtdir ()) "peers"

type t = { path: string; pack: Header_pack.t }

let fold fn init = match Sys.readdir text_dir with
	| exception (Sys_error msg) -> prerr_endline msg; init
	| dirs ->
		let read_pack init path =
			let fullpath = Filename.concat text_dir path in
			if Sys.is_directory fullpath then begin
			let pack_path = Filename.concat fullpath "index.pck" in
			match Sys.file_exists pack_path with
			| false -> Printf.eprintf "Missing index.pck for %s\n" path; init
			| true -> match Header_pack.of_string (File_store.to_string pack_path) with
				| Error s -> Printf.eprintf "%s %s\n" s pack_path; init
				| Ok pack -> fn init { path; pack }
			end else init
		in
		Array.fold_left read_pack init dirs

let scheme url =
	let colon_idx = String.index_from url 0 ':' in
	let scheme = String.sub url 0 colon_idx in
(*	let remain = String.(sub url (colon_idx+1) (length url - length scheme - 1)) in*)
	scheme