Zwift scripts

Startup scripts for Zwift

Requirements:
============

I'm not even sure all the requirements, I might miss some of them.
* GNU date from Homebrew
* curl and xmllint - might be part of base MacOS install, or might be XCode. Dunno.

Put both scripts in the same directory - I use the "bin" subdir under my homedir. Call the "zwift" script.

Ride On!

zwift

#!/bin/bash
# shellcheck disable=SC1117

# Launcher for Zwift that gives you the option to change world easily.

# Location of the Zwift preferences file
prefs=~/Documents/Zwift/prefs.xml

# Check to see if the previous world is set
prev=$(awk -F '[><]' '/WORLD/ {print $3}' $prefs)

# Set previous to default if I didn't find it in the prefs.xml
if [[ -z $prev ]]
then
    prev="Default"
fi

# Get the currently active world
#  Requires "zwift-world" script
current=$("${0}-world")

# Display a menu
echo "Choose your Zwift course:"
echo "========================"
echo " 1. Watopia"
echo " 2. Richmond"
echo " 3. London"
echo " 4. New York City"
echo " 5. Innsbruck"
echo " C. Currently active ($current)"
echo " P. Previous ($prev)"

# Initialize an invalid answer
answer='x'

# Loop through the prompt until we get a valid answer
until [[ $answer =~ [1-5CcPp] || -z $answer ]]
do
    read -rp "Enter your selection: " answer
done

# Act based on the answer given.
case $answer in
    [1-5])
        # A valid world has been chosen, use that.
        insert="<WORLD>${answer}</WORLD>"
        sedcmd="$(echo -e "/WORLD/d; 2a\\ \n\\    ${insert}\n ")"
        ;;
    [cC])
        # Go with the currently active Zwift world.
        sedcmd='/WORLD/d'
        ;;
    [pP]|'')
        # Stick with what I rode last.
        sedcmd=''
        ;;
    *)
        # This was more useful in the initial debugging of the script
        #   and shouldn't happen in normal conditions.
        echo "How did your special brand of stupid make it this far?"
        exit 1
        ;;
esac

# If we've specified a world, run the command to specify it.
if [[ -n $sedcmd ]]
then
    cp ${prefs} ${prefs}.bak
    # xmllint is used to test that we create valid XML
    if sed "$sedcmd" ${prefs} | xmllint - > ${prefs}.tmp
    then
        mv ${prefs}.tmp ${prefs}
    else
        echo "ERROR: couldn't process, exiting."
        rm ${prefs}.tmp
        mv ${prefs}.bak ${prefs}
        exit 1
    fi
fi

# Fire up Zwift. For some reason, the "Let's Go" button will require two or three clicks to make it react.
osascript -e 'tell application "Zwift" to activate'

zwift-world

#!/bin/bash

# Thanks to Matt Bafford for finding the web URL for the Zwift map schedule.
SCHEDULE='http://cdn.zwift.com/gameassets/MapSchedule_v2.xml'
# This is the pattern to look for that specifies which worlds are active and when they become active
worldpat='<appointment '
# This requires GNU date which can be installed with Homebrew.
gdate='/usr/local/bin/gdate'

# Check if gdate is installed
if [[ -x $gdate ]]
then
    now=$($gdate +%s)
else
    echo "ERROR: I need GNU date. Please install with Homebrew"
fi

# Initialize the previous value for the world
prevworld='ERROR'

# Grab the schedule and process the dates
curl -s $SCHEDULE | awk -F '"' "/${worldpat}/ {print \$4, \$2}" | sort | while read -r startdate world
do
    # Get the time of the start of this world in epoch seconds
    start=$($gdate -d "${startdate}" +%s)

    # If the start time hasn't happened yet, then it's the next world
    if (( start > now ))
    then
        # Echo the previous world and break out
        echo "$prevworld"
        break
    fi
    # Set the previous world
    prevworld="$world"
done

Thank you for this!