gps-traccar.sh

#!/bin/bash

ADDR="http://traccar.example.com:5055" # Replace with your traccar server address
ID="12345" # Replace this with your chosen traccar id
LOGFILE="/var/log/gps-traccar.log"

function execute_push {
    DATA="${ADDR}/?id=${ID}&lat=${LAT}&lon=${LON}&timestamp="${TIME}"&hdop=${HDOP}&altitude=${ALT}&speed=${SPEED}&climb=${CLIMB}"
    # echo "[$(date +%s)] $DATA" >> LOGFILE
    curl -m 10 -X POST "$DATA" >> LOGFILE 2>&1
    echo "[$(date +%s)] Pushed position" >> LOGFILE
}

function get_position {
    gpspipe --json --count 5 2> /dev/null 1> gps-traccar.dmp

    MODE=$( cat gps-traccar.dmp | jq '. | select( .class == "TPV" ).mode' | sed 's/null/0/g')
    LAT=$( cat gps-traccar.dmp | jq '. | select( .class == "TPV" ).lat' | sed 's/null/0/g')
    LON=$( cat gps-traccar.dmp | jq '. | select( .class == "TPV" ).lon' | sed 's/null/0/g')
    ALT=$( cat gps-traccar.dmp | jq '. | select( .class == "TPV" ).altMSL' | sed 's/null/0/g')
    TIME=$( cat gps-traccar.dmp | jq '. | select( .class == "TPV" ).time' | sed 's/null/0/g' | sed 's/"//g' )
    HDOP=$( cat gps-traccar.dmp | jq '. | select( .class == "SKY" ).hdop' | sed 's/null/0/g')
    SPEED=$( cat gps-traccar.dmp | jq '. | select( .class == "SKY" ).speed' | sed 's/null/0/g')
    CLIMB=$( cat gps-traccar.dmp | jq '. | select( .class == "SKY" ).climb' | sed 's/null/0/g')
    HEADING=$( cat gps-traccar.dmp | jq '. | select( .class == "ATT" ).heading'| sed 's/null/0/g' )

    echo "[$(date +%s)] LAT:${LAT} LON:${LON} HDOP:${HDOP} SPEED:${SPEED} ALT:${ALT} DIR:${HEADING}" >> LOGFILE
}

SPEED=0
PREV_SPEED=${SPEED}

CURRENT_TIME=$(date +%s)
echo "[${CURRENT_TIME}] Starting..." >> LOGFILE
echo "[${CURRENT_TIME}] Device-ID: ${ID}, Traccar-Server: ${ADDR}" >> LOGFILE

while true; do
    get_position

    CURRENT_TIME=$(date +%s)

    if (( SPEED > 60 )); then
        # Execute once, if SPEED is > 60, update and wait 10 sec
        execute_push
        echo "[$(date +%s)] Speed > 60, wait 10s" >> LOGFILE
        sleep 10
    elif (( SPEED > 0 )); then
        # Execute once, if SPEED is between 1 and 60, update and wait 30 sec
        execute_push
        echo "[$(date +%s)] Speed > 0, wait 30s" >> LOGFILE
        sleep 30
    else
        if (( PREV_SPEED > 0 )); then
            # Execute once, if SPEED is reduced from >0 to 0
            execute_push  
            echo "[$(date +%s)] Device stopped moving" >> LOGFILE
        fi
        # Check whether an hour has passed
        if (( CURRENT_TIME - LAST_EXECUTION_TIME >= 3600 )); then
            execute_push
            echo "[$(date +%s)] Hourly update" >> LOGFILE
            LAST_EXECUTION_TIME=$CURRENT_TIME
        fi
        sleep 10  
    fi

    # Update previous SPEED
    PREV_SPEED=$SPEED
done