open Cmdliner
open Cmdliner.Term.Syntax
open Offline_impl

let default_master_offline_key_file = "data/master_offline_private_key"
let default_response_file = "response.json"
let default_request_file = "request.json"

(*let to_term_ret = function Error e -> `Error (false, e) | Ok () -> `Ok ()*)
let to_term_ret = Fun.id

let setup_cmd =
  let doc = "Generate offline master keys" in
  let output =
    let doc = "output file" in
    Arg.(
      value
      & opt filepath default_master_offline_key_file
      & info [ "o"; "output" ] ~doc)
  in
  Cmd.make (Cmd.info "setup" ~doc)
  @@
  let+ output = output in
  setup ~output |> to_term_ret

let download_cmd =
  let doc = "GET /management/keys/" in
  let man =
    [ `S Manpage.s_description; `P "$(cmd) download /management/keys." ]
  in
  let output =
    let doc = "output file" in
    Arg.(
      value & opt filepath default_response_file & info [ "o"; "output" ] ~doc)
  in
  Cmd.make (Cmd.info "download" ~doc ~man)
  @@
  let+ output = output in
  download ~output |> to_term_ret

let upload_cmd =
  let doc = "POST input.json data to url (default /management/keys)" in
  let input =
    let doc = "input file" in
    Arg.(value & opt file default_request_file & info [ "i"; "input" ] ~doc)
  in
  let url =
    let doc = "url" in
    Arg.(value & opt string "/management/keys" & info [ "url" ] ~doc)
  in
  Cmd.make (Cmd.info "upload" ~doc)
  @@
  let+ input = input and+ url = url in
  upload ~input ~url |> to_term_ret

let master_key =
  let doc = "Master offline Eddsa private key file." in
  Arg.(value & opt file default_master_offline_key_file & info [ "key" ] ~doc)

let input =
  let doc = "input file" in
  Arg.(value & opt file default_response_file & info [ "i"; "input" ] ~doc)

let output =
  let doc = "output file" in
  Arg.(value & opt filepath default_request_file & info [ "o"; "output" ] ~doc)

let sign_cmd =
  let doc = "Sign FutureKeysResponse." in
  Cmd.make (Cmd.info "sign" ~doc)
  @@
  let+ input = input and+ output = output and+ master_key = master_key in
  sign ~input ~output ~master_key |> to_term_ret

let revoke_denom_cmd =
  let doc = "Revoke denomination." in
  let h_denom =
    let doc = "hash of denomination public key" in
    Arg.(required & pos 0 (some string) None & info [] ~doc)
  in
  Cmd.make (Cmd.info "revoke-denom" ~doc)
  @@
  let+ output = output and+ master_key = master_key and+ h_denom = h_denom in
  revoke_denom ~output ~master_key ~h_denom |> to_term_ret

let revoke_signkey_cmd =
  let doc = "Revoke signkey." in
  let signkey =
    let doc = "public signing key" in
    Arg.(required & pos 0 (some string) None & info [] ~doc)
  in
  Cmd.make (Cmd.info "revoke-signkey" ~doc)
  @@
  let+ output = output and+ master_key = master_key and+ signkey = signkey in
  revoke_signkey ~output ~master_key ~signkey |> to_term_ret

let cli =
  let info =
    let doc = "MTE Offline CLI tool" in
    Cmd.info "mte-offline" ~doc
  in
  Cmd.group info
    [
      setup_cmd;
      download_cmd;
      sign_cmd;
      upload_cmd;
      revoke_denom_cmd;
      revoke_signkey_cmd;
    ]

let main () = Cmd.eval_result cli
let () = if !Sys.interactive then () else exit (main ())