Parse Training Peaks Metrics zipped export file and converts it to Golden Cheetah metrics import CSV format

tp_metrics_to_gc.sh

#!/bin/bash

UNZIP=$( which unzip )

INPUT_FILE=$1

if [ -$INPUT_FILE- == -- ]; then
    echo "usage: $0 trainingpeaksexportfile.zip"
    exit 1
fi

CURRENT_DATE=""
DATE=""
OUTPUT=0

WEIGHTKG=0
PERCENTFAT=.00

echo "date,weightkg,fatkg,boneskg,musclekg,leankg,fatpercent,comment"

while read LINE; do
    
    DATE=$( echo $LINE | cut -d, -f1 | sed 's/"//g' )

    if [ "-$DATE-" != "-$CURRENT_DATE-" ]; then

        if [ "$WEIGHTKG" != "0" ]; then
            if [ $OUTPUT -eq 0 ]; then
                echo "$( echo $CURRENT_DATE | sed 's/ /T/' )Z,$WEIGHTKG,0,0,0,0,$PERCENTFAT,tp2gc"   
                OUTPUT=1
            else
                OUTPUT=0
            fi
        fi
       
       CURRENT_DATE=$DATE
    fi 
    
    FIELD=$( echo $LINE | cut -d, -f2 )
    VALUE=$( echo $LINE | cut -d, -f3 | sed 's/"//g' )

    if [ "$FIELD" == '"Weight Kilograms"' ]; then
        WEIGHTKG=$VALUE
    fi

    if [ "$FIELD" == '"Percent Fat"' ]; then
        if [ "$VALUE" = ".00" ]; then
            PERCENTFAT=0
        else
            PERCENTFAT=$VALUE
        fi
    fi
done < <( unzip -c $INPUT_FILE metrics.csv | sed 's/\r$//g' | tail -n +4  | head -n -1)

if [ "$WEIGHTKG" != "0" ]; then
        echo "$( echo $DATE | sed 's/ /T/' )Z,$WEIGHTKG,0,0,0,0,$PERCENTFAT,tp2gc"   
fi