#!/usr/bin/env janet

(import spork/netrepl)
(import spork/argparse)

(defn- main
  [&]

  (def ap
   (argparse/argparse
    "Start a networked REPL server or client"

    :default
    {:kind :accumulate
     :help "Files to load into the environment"}

    "host"
    {:short "H"
     :help (string "The server host to serve the repl on. Default is " netrepl/default-host)
     :default netrepl/default-host
     :kind :option}

    "port"
    {:short "P"
     :help (string "The server port to serve the repl on. Default is " netrepl/default-port)
     :default netrepl/default-port
     :kind :option}

    "client"
    {:short "c"
     :kind :flag
     :help "Spawn a netrepl client instead of a server"}

    "client-name"
    {:short "n"
     :kind :option
     :help "Set the name of the connecting client"}

    "library"
    {:short "l"
     :kind :accumulate
     :help "Load libraries in the repl as with the janet -l flag"}

    "dofile"
    {:short "d"
     :kind :option
     :help "Pass in a file to evaluate with dofile for each new environment table"}

    "message"
    {:short "m"
     :kind :option
     :help "Specify a short message to show clients on connection"}

    "message-file"
    {:short "M"
     :kind :option
     :help "Specify a file to load as a welcome message for new connections"}

    "single-env"
    {:short "s"
     :kind :flag
     :help "Share a single environment between multiple connections"}))

  # Break on help text
  (unless ap (break))
  (def host (ap "host"))
  (def port (ap "port"))
  (def dof (ap "dofile"))
  (def msg (ap "message"))
  (def msg-file (ap "message-file"))
  (def files (get ap :default []))
  (def libraries (get ap "library" []))
  (defn make-msg
    [&]
    (if msg (string msg "\n")
      (if msg-file (slurp msg-file))))
  (defn env-make
    [&]
    (let [e (make-env)]
      (each l libraries (merge-module e (require l)))
      (each f files (merge-module e (dofile f)))
      (put e :pretty-format "%.20Q")
      (when dof (dofile dof :env e))
      e))
  (if (ap "client")
    (netrepl/client host port (ap "client-name"))
    (if (ap "single-env")
      (netrepl/server-single host port env-make nil make-msg)
      (netrepl/server host port env-make nil make-msg))))