Watch KOS for teacher assignment changes and notify user

koswatcher.sh

#!/usr/bin/env bash

declare -A subject_teachers

#┌───────┐
#│ SETUP │
#└───────┘
# 1. Install chromedriver
# 2. Make sure notify-send properly sends notifications
# 3. (Optional) Install espeak-ng and voice bank for voice warning
# 4. git clone https://github.com/Rasukarusan/shellnium
# 5. Place this file in the cloned folder
# 6. Change configuration and run

# ┌───────────────┐
# │ CONFIGURATION │
# └───────────────┘
username="FIT_USERNAME"
password="FIT_PASSWORD"
subjects="BI-PA2 BI-LIN"
subject_teachers[BI-PA2]="Matoušek Bernhauer Kříž"
subject_teachers[BI-LIN]="Dombek"
#┌──────────────────────┐
#│ END OF CONFIGURATION │
#└──────────────────────┘

trap "trap - SIGTERM && kill -- -$$" SIGINT SIGTERM EXIT

( chromedriver & ) || ( echo "Failed to start chromedriver. Is it installed?" >&2; exit 1 )


source $HOME/data/Applications/shellnium/lib/selenium.sh

login () {
    navigate_to 'https://www.kos.cvut.cz/'

    local usernameBox=$(find_element 'id' 'userName')
    local passwordBox=$(find_element 'id' 'password')
    local loginButton=$(find_element 'name' 'vstup')

    send_keys "$usernameBox" "$username"
    send_keys "$passwordBox" "$password"
    click "$loginButton"
}

navigateToTimetable () {
    exec_script "javascript:window.open('ttAllsubjects.do?page='+pageCode,'_self')"
}

navigateToSubject () { 
    echo "Navigate to subject $1"
    local link_subject=$(find_element 'xpath' "//a[contains(@href, '$1') and contains(text(), 'Zobrazit')]")
    click "$link_subject"
}

checkTeacher () {
    printf "\tCheck teacher %s\n" "$1"
    local teacher=$(find_element 'xpath' "//a[contains(text(), '$1')]")
    if [[ "$teacher" != "null" ]]; then
        for i in $(seq 1 10); do
            notify-send "TEACHER FOUND: $1"
            espeak-ng "Teacher found. $1" -a 150 || true
            sleep 1;
        done
    fi
}

login

while true; do
    for subject in $subjects; do
        navigateToTimetable
        teachers=${subject_teachers[$subject]}
        navigateToSubject "$subject"
        for teacher in $teachers; do
            checkTeacher "$teacher"
        done
    done
    echo "Sleep 14 minutes"
    sleep $((14*60))
done

delete_session