#!/bin/bash
#%# family=auto
#%# capabilities=autoconf

: << EOF
=head1 NAME

Outputs the total production, DC current, DC voltage, DC power from Solarman (Smart) API.
To get the API-Keys a E-Mail to customerservice@solarmanpv.com is needed.

=head1 CONFIGURATION

Tested with a "Deye SUN600G3-EU-230 600W" inverter.

Dependencies:
 - curl
 - jq

plugin config:

  [solarman_api_panels_<name>]
    env.SLRM_APPID 2XXXXXXXX2
    env.SLRM_DEVICE_SN 2XXXXXXXXX6-1
    env.SLRM_MAIL "XXXX@YYY.de"
    env.SLRM_PASSWORD 'aXXXXXXXXf'
    env.SLRM_APPSECRET aXXXXXXXb

=head1 AUTHOR

Michael Grote

=head1 LICENSE

GPLv3 or later

SPDX-License-Identifier: GPL-3.0-or-later

=head1 MAGIC MARKERS

 #%# family=auto

=cut

EOF

# check if jq is installed
if ! command -v "jq" &> /dev/null; then
    echo "[ERROR] jq could not be found!"
    exit 2
fi

# Combine Variables
## hash password; -n is used because "echo" normally outputs a newline
export SLRM_PASSWORD_SHA=$(echo -n $SLRM_PASSWORD | sha256sum | cut -f1 -d" ")
## set url
export SLRM_URL="https://api.solarmanpv.com/account/v1.0/token?appId=${SLRM_APPID}&language=en&="
## create request body for bearer token
export SLRM_BEARER_TOKEN_REQUEST_BODY=$(jq --null-input --arg appSecret "${SLRM_APPSECRET}" --arg email "${SLRM_MAIL}" --arg password "${SLRM_PASSWORD_SHA}" '{"appSecret": $appSecret, "email": $email, "password": $password}')
## get bearer token
export SLRM_BEARER_TOKEN=$(curl --silent --request POST --url "${SLRM_URL}" --header 'Content-Type: application/json' --data "$SLRM_BEARER_TOKEN_REQUEST_BODY" | jq .access_token | sed -r 's/"//g')
## create request body for panel data
export SLRM_DATA_REQUEST_BODY=$(jq --null-input --arg deviceSn "${SLRM_DEVICE_SN}" '{"deviceSn": $deviceSn}')
## get panel data
export SLRM_DATA=$(curl --silent --request POST --url "https://api.solarmanpv.com/device/v1.0/currentData?appId=${SLRM_APPID}&language=en&=" --header "Authorization: bearer ${SLRM_BEARER_TOKEN}" --header 'Content-Type: application/json' --data "${SLRM_DATA_REQUEST_BODY}")

# wenn parameter = ...
if [ "$1" = "autoconf" ]; then
    echo yes
    exit 0
fi

if [ "$1" = "config" ]; then
    # setze optionen
    echo multigraph voltage_current_input
    echo "graph_title Panel DC Voltage/Current/Power - SN: $SLRM_DEVICE_SN"
    echo 'graph_vlabel V/A/W'
    echo 'graph_category sensors'
    echo 'graph_args -l 0'
    echo "graph_info The Current DC Voltage, Current and Power of Panel SN: $SLRM_DEVICE_SN"
    echo voltage.label Volt
    echo current.label Ampere
    echo power.label Watt

    echo multigraph production
    echo "graph_title Panel Total production - SN: $SLRM_DEVICE_SN"
    echo 'graph_vlabel kWh'
    echo 'graph_category sensors'
    echo 'graph_args -l 0'
    echo "graph_info The total Production in kWh of Panel SN: $SLRM_DEVICE_SN"
    echo total.label kWh
    echo total.draw AREA

    exit 0
fi

# sometimes the api can not find the requested device, exit here
echo $SLRM_DATA | grep "device not found" && exit 1

echo multigraph voltage_current_input
echo voltage.value "$(echo "$SLRM_DATA" | jq -r '.dataList[]|select(.key|IN("DV1"))|.value')"
echo current.value "$(echo "$SLRM_DATA" | jq -r '.dataList[]|select(.key|IN("DC1"))|.value')"
echo power.value   "$(echo "$SLRM_DATA" | jq -r '.dataList[]|select(.key|IN("DPi_t1"))|.value')"

echo multigraph production
echo total.value   "$(echo "$SLRM_DATA" | jq -r '.dataList[]|select(.key|IN("Et_ge0"))|.value')"

exit 0