#!/bin/bash

function addDashboard() {
   echo -e "{\"dashboard\": $(cat $1) }" | \
   sed -e "s,\${DS_BEEGFS_MON_INFLUXDB},$DATASOURCE_NAME,g" | \
   curl -s -X POST "$HOST/api/dashboards/db"  \
      --header "Content-type: application/json" \
      --data @-
}

function addDatasource() {
   sed -e "s,%DATABASE_NAME%,$DATABASE_NAME,g" \
      -e "s,%DATABASE_USER%,$DATABASE_USER,g" \
      -e "s,%DATASOURCE_URL%,$DATASOURCE_URL,g" \
      -e "s,%DATASOURCE_NAME%,$DATASOURCE_NAME,g" \
      -e "s,%PASSWORD%,$PASSWORD,g" \
      "$1" | \
   curl -s -X POST "$HOST/api/datasources" \
      --header "Content-type: application/json" \
      --data @-
}


function addDatasourceV2() {
   sed -e "s,%BUCKET_NAME%,$BUCKET_NAME,g" \
      -e "s,%ORG_NAME%,$ORG_NAME,g" \
      -e "s,%DATASOURCE_URL%,$DATASOURCE_URL,g" \
      -e "s,%DATASOURCE_NAME%,$DATASOURCE_NAME,g" \
      -e "s,%TOKEN%,$TOKEN,g" \
      "$1" | \
   curl -s -X POST "$HOST/api/datasources" \
      --header "Content-type: application/json" \
      --data @-
}


DATASOURCE_NAME="beegfs_mon_influxdb"
HOST="http://admin:admin@localhost:3000"
DATASOURCE_URL="http://localhost:8086"

if  [[ $1 != "default" ]] && [[ ! $# -eq 2 ]]; then
   echo "This script imports the default beegfs-mon Dashboards into Grafana using its HTTP API."
   echo "Curl is required."
   echo ""
   echo "Usage: "
   echo "Default installation to localhost: $(basename "$0") default"
   echo "Custom installation: $(basename "$0") <grafana url> <datasource url>"
   echo ""
   echo "Default:"
   echo "$(basename "$0") $HOST $DATASOURCE_URL $DATABASE_NAME"
   exit 0
fi

command -v curl > /dev/null 2>&1 || \
{
   echo "This script requires curl, but it doesn't seem to be installed. Aborting."
   exit 1
}

echo "Select an option:"
echo "1. Using BeeGFS Monitoring with Telegraf"
echo "2. Using BeeGFS Monitoring without Telegraf"

read -p "Enter your Option: " option

if [[ "$option" == "1" ]]; then
    monType="wtelegraf"
elif [[ "$option" == "2" ]]; then
    monType="wotelegraf"
else
    echo "*** Please select correct option ***"  
    exit 1
fi

echo "Please select influxdb version:"
echo "1) Influxdb 1.x"
echo "2) Influxdb 2.x"


if [[ $1 != "default" ]]; then
   HOST="$1"
   DATASOURCE_URL="$2"
fi

GRAFANA_DIR=$(dirname "$0")

read -p "Enter your influxdb Verion: " influxdb_version

if [[ "$influxdb_version" == "1" ]] ; then
    
    read -p "Enter Database Name: " DATABASE_NAME
    read -p "Enter Database User: " DATABASE_USER
    read -s -p "Enter Database Password: " PASSWORD

elif [[ "$influxdb_version" == "2" ]] ; then

    read -p "Enter Bucket Name:" BUCKET_NAME
    read -p "Enter Organizations: " ORG_NAME
    read -s -p "Enter Token: " TOKEN
fi

if [[ "$influxdb_version" == "1" ]] && [[ "$monType" == "wtelegraf" ]] ; then

    addDatasource "$GRAFANA_DIR/influxdb.json"
    addDashboard "$GRAFANA_DIR/beegfs_overview_telegraf_influxdbv1.json"
    addDashboard "$GRAFANA_DIR/meta_telegraf_influxdbv1.json"
    addDashboard "$GRAFANA_DIR/storage_telegraf_influxdbv1.json"
    addDashboard "$GRAFANA_DIR/storage_targets_telegraf_influxdbv1.json"
    addDashboard "$GRAFANA_DIR/client_ops_node_telegraf_influxdbv1.json"
    addDashboard "$GRAFANA_DIR/client_ops_user_telegraf_influxdbv1.json"

elif [[ "$influxdb_version" == "2" ]] && [[ "$monType" == "wtelegraf" ]] ; then

    addDatasourceV2 "$GRAFANA_DIR/influxdbV2.json"
    addDashboard "$GRAFANA_DIR/beegfs_overview_telegraf_influxdbv2.json"
    addDashboard "$GRAFANA_DIR/meta_telegraf_influxdbv2.json"
    addDashboard "$GRAFANA_DIR/storage_telegraf_influxdbv2.json"
    addDashboard "$GRAFANA_DIR/storage_targets_telegraf_influxdbv2.json"
    addDashboard "$GRAFANA_DIR/client_ops_node_telegraf_influxdbv2.json"
    addDashboard "$GRAFANA_DIR/client_ops_user_telegraf_influxdbv2.json"

elif [[ "$influxdb_version" == "1" ]] && [[ "$monType" == "wotelegraf" ]] ; then

    addDatasource "$GRAFANA_DIR/influxdb.json"
    addDashboard "$GRAFANA_DIR/beegfs_overview_influxdbv1.json"
    addDashboard "$GRAFANA_DIR/meta_influxdbv1.json"
    addDashboard "$GRAFANA_DIR/storage_influxdbv1.json"
    addDashboard "$GRAFANA_DIR/storage_targets_influxdbv1.json"
    addDashboard "$GRAFANA_DIR/client_ops_node_influxdbv1.json"
    addDashboard "$GRAFANA_DIR/client_ops_user_influxdbv1.json"

elif [[ "$influxdb_version" == "2" ]] && [[ "$monType" == "wotelegraf" ]] ; then

    addDatasourceV2 "$GRAFANA_DIR/influxdbV2.json"
    addDashboard "$GRAFANA_DIR/beegfs_overview_influxdbv2.json"
    addDashboard "$GRAFANA_DIR/meta_influxdbv2.json"
    addDashboard "$GRAFANA_DIR/storage_influxdbv2.json"
    addDashboard "$GRAFANA_DIR/storage_targets_influxdbv2.json"
    addDashboard "$GRAFANA_DIR/client_ops_node_influxdbv2.json"
    addDashboard "$GRAFANA_DIR/client_ops_user_influxdbv2.json"

else
   echo "*** Please select correct version of InfluxDB ***"
   exit 1

fi