#!/bin/sh
#
#
#
#

. ./pycoin.sh
. ./responsetoclient.sh
. ./trace.sh

main() {
  trace "Entering main()..."

  local step=0
  local cmd
  local http_method
  local line
  local content_length
  local response
  local returncode

  while read line; do
    line=$(echo "${line}" | tr -d '\r\n')
    trace "[main] line=${line}"

    if [ "${cmd}" = "" ]; then
      # First line!
      # Looking for something like:
      # GET /cmd/params HTTP/1.1
      # POST / HTTP/1.1
      cmd=$(echo "${line}" | cut -d '/' -f2 | cut -d ' ' -f1)
      trace "[main] cmd=${cmd}"
      http_method=$(echo "${line}" | cut -d ' ' -f1)
      trace "[main] http_method=${http_method}"
      if [ "${http_method}" = "GET" ]; then
        step=1
      fi
    fi
    if [ "${line}" = "" ]; then
      trace "[main] empty line"
      if [ ${step} -eq 1 ]; then
        trace "[main] body part finished, disconnecting"
        break
      else
        trace "[main] headers part finished, body incoming"
        step=1
      fi
    fi
    # line=content-length: 406
    case "${line}" in *[cC][oO][nN][tT][eE][nN][tT]-[lL][eE][nN][gG][tT][hH]*)
      content_length=$(echo "${line}" | cut -d ':' -f2)
      trace "[main] content_length=${content_length}";
      ;;
    esac
    if [ ${step} -eq 1 ]; then
      trace "[main] step=${step}"
      if [ "${http_method}" = "POST" ]; then
        read -n ${content_length} line
        trace "[main] line=${line}"
      fi
      case "${cmd}" in
        derive)
          # POST http://192.168.111.152:7777/derive
          # BODY {"pub32":"tpubD6NzVbkrYhZ4YR3QK2tyfMMvBghAvqtNaNK1LTyDWcRHLcMUm3ZN2cGm5BS3MhCRCeCkXQkTXXjiJgqxpqXK7PeUSp86DTTgkLpcjMtpKWk","path":"0/25-30"}
          # BODY {"pub32":"upub5GtUcgGed1aGH4HKQ3vMYrsmLXwmHhS1AeX33ZvDgZiyvkGhNTvGd2TA5Lr4v239Fzjj4ZY48t6wTtXUy2yRgapf37QHgt6KWEZ6bgsCLpb","path":"0/25-30"}
          # BODY {"pub32":"vpub5SLqN2bLY4WeZF3kL4VqiWF1itbf3A6oRrq9aPf16AZMVWYCuN9TxpAZwCzVgW94TNzZPNc9XAHD4As6pdnExBtCDGYRmNJrcJ4eV9hNqcv","path":"0/25-30"}

          response=$(derive "${line}")
          returncode=$?
          ;;
        *)
          response='{"error": {"code": -32601, "message": "Method not found"}, "id": "1"}'
          returncode=1
          ;;
      esac
      response=$(echo "${response}" | jq -Mc)
      response_to_client "${response}" ${returncode}
      break
    fi
  done
  trace "[main] exiting"
  return 0
}

main
exit $?