#!/bin/sh

TAG="$(date +%Y%m%d%H%M%S)-$@"
OUTFILE="$TAG.out"
JAR="$TAG.cj"

echo "OUTFILE=$OUTFILE"

test -z "$PROTOCOL" && echo -n "enter PROTOCOL : " && PROTOCOL=$(read $PROTOCOL)
test -z "$HOST_PORT" && echo -n "enter HOST:PORT : " && HOST_PORT=$(read $HOST_PORT)
test -z "$CLIENT" && echo -n "enter CLIENT : " && CLIENT=$(read $CLIENT)

test -z "$OAUTH_URL" && test -z "$USER" && echo -n "enter OAUTH_URL to enable OAUTH (blank means no) : " && OAUTH_URL=$(read $OAUTH_URL)

if [[ -z "$OAUTH_URL" ]]; then
  test -z "$USER" && echo -n "enter USER : " && USER=$(read $USER)
  test -z "$PASSWORD" && echo -n "enter PASSWORD : " && PASSWORD=$(read $PASSWORD)
  AUTH="Authorization: Basic $(echo -n "$USER:$PASSWORD" | base64)"
else
  test -z "$CLIENT_ID" && echo -n "enter CLIENT_ID : " && CLIENT_ID=$(read $CLIENT_ID)
  test -z "$CLIENT_SECRET" && echo -n "enter CLIENT_SECRET : " && CLIENT_SECRET=$(read $CLIENT_SECRET)
  test -z "$SCOPE" && echo -n "enter SCOPE : " && SCOPE=$(read $SCOPE)
fi

test -z "${BASE_PATH+1}" && echo -n "enter BASE_PATH (leave empty or end with /) : " && BASE_PATH=$(read $BASE_PATH)

# ---

function arbitrary()
{
  echo GET $1:
  curl $FLAGS -sv -H"$AUTH" $PROTOCOL://$HOST_PORT/${BASE_PATH}medius/$1?sap-client=$CLIENT
}

function closeConnection()
{
  echo ConnectionClose=true
  curl $FLAGS -sv -HConnectionClose=true -c"$JAR" -Hx-csrf-token:$CSRF -H"$AUTH" $PROTOCOL://$HOST_PORT/${BASE_PATH}medius/version?sap-client=$CLIENT
}

function csrfToken()
{
  echo GET ping:
  curl $FLAGS -sv -c"$JAR" -Hx-csrf-token:fetch -H"$AUTH" $PROTOCOL://$HOST_PORT/${BASE_PATH}medius/ping?sap-client=$CLIENT > "$OUTFILE" 2>&1
  echo 'OUTPUT:'
  cat "$OUTFILE"

  CSRF=$(grep '< x-csrf-token' "$OUTFILE" | awk '{ print $3 }')
  echo token is $CSRF
}

function oauth()
{
  BODY="grant_type=client_credentials&scope=$SCOPE&client_id=$CLIENT_ID&client_secret=$CLIENT_SECRET"

  curl $FLAGS -v -d "$BODY" $OAUTH_URL > "$OUTFILE"
  echo 'OUTPUT:'
  cat "$OUTFILE"
  AUTH="Authorization: Bearer $(cat "$OUTFILE" | jq -r '.access_token')"
  echo AUTH is now $AUTH
}

function ping()
{
  echo GET ping:
  curl $FLAGS -sv -H"$AUTH" $PROTOCOL://$HOST_PORT/${BASE_PATH}medius/ping?sap-client=$CLIENT
}

function post_ping()
{
  echo POST ping:
  curl $FLAGS -sv -b"$JAR" -Hx-csrf-token:$CSRF -H'Content-Type:application/json' -H"$AUTH" $PROTOCOL://$HOST_PORT/${BASE_PATH}medius/ping?sap-client=$CLIENT -d=''
}

function post_fi()
{
  echo POST FI:
  curl $FLAGS -sv -b"$JAR" -Hx-csrf-token:$CSRF -H'Content-Type:application/json' -H"$AUTH" $PROTOCOL://$HOST_PORT/${BASE_PATH}medius/post_fi_invoice?sap-client=$CLIENT -d@$@ > "$OUTFILE"
  echo 'OUTPUT:'
  cat "$OUTFILE"
}

function post_payment()
{
  echo POST payment:
  curl $FLAGS -sv -b"$JAR" -Hx-csrf-token:$CSRF -H'Content-Type:application/json' -H"$AUTH" $PROTOCOL://$HOST_PORT/${BASE_PATH}medius/clear_invoice?sap-client=$CLIENT -d@$@ > "$OUTFILE"
  echo 'OUTPUT:'
  cat "$OUTFILE"
}

# ---

if [[ -z "$@" ]]; then
  echo give a command
  exit 1
fi

cmd=$1

shift

if [[ "$cmd" == "arbitrary" ]]; then
  arbitrary $@

elif [[ "$cmd" == "oauth" ]]; then
  oauth

elif [[ "$cmd" == "oauth-ping" ]]; then
  oauth
  ping

elif [[ "$cmd" == "ping" ]]; then
  ping

elif [[ "$cmd" == "post-fi" ]]; then
  csrfToken
  post_fi $@

elif [[ "$cmd" == "post-ping" ]]; then
  csrfToken
  post_ping

elif [[ "$cmd" == "post-ping-with-close" ]]; then
  csrfToken
  closeConnection
  post_ping

elif [[ "$cmd" == "csrf" ]]; then
  csrfToken

elif [[ "$cmd" == "payment" ]]; then
  csrfToken
  post_payment $@
fi