main.sh

#!/bin/bash

# Determine the directory where the script is located
SCRIPT_DIR="$(CDPATH= cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

# Specify the path to your.env file relative to the script directory
ENV_FILE="$SCRIPT_DIR/.env"
log_file="$SCRIPT_DIR/$(basename "$0" .sh).log"

# Function to prepend current date and time to log messages
log_with_date() {
    echo "$(date '+%a %Y-%m-%d %H:%M:%S.%3N') - $(basename "$0"): $1" | tee -a $log_file
}

log_with_date "Script started"

# Check if the.env file exists
if [ -f "$ENV_FILE" ]; then

    # Read the.env file line by line
    while IFS= read -r line; do

        # Skip comments and empty lines
        if [[ "$line" =~ ^\s*#.*$ || -z "$line" ]]; then
            continue
        fi

        # Split the line into key and value
        key=$(echo "$line" | cut -d '=' -f 1)
        value=$(echo "$line" | cut -d '=' -f 2-)

        # Remove single quotes, double quotes, and leading/trailing spaces from the value
        value=$(echo "$value" | sed -e "s/^'//" -e "s/'$//" -e 's/^"//' -e 's/"$//' -e 's/^[ \t]*//;s/[ \t]*$//')

        # Assign the key and value as local variables
        eval "$key='$value'"
    done <"$ENV_FILE"
fi

# Initialize the start date to today
start_date=$(date +%s)
dates=()

# Loop for the next 14 days
for i in $(seq 0 14); do
    # Calculate the Unix timestamp for the next day
    next_day_timestamp=$((start_date + i * 86400))

    # Convert Unix timestamp to a day of the week (e.g., Mon)
    day_of_week=$(date -d @$next_day_timestamp +%a)

    # Check if the day of the week is in the list of days to skip
    if [[ ! $CONST_DAYS_TO_SKIP =~ $day_of_week ]]; then
        # If not in skip list, add the date to the dates array
        dates+=($next_day_timestamp)
    fi
done

# Loop through each URL
for curr_date in "${dates[@]}"; do
    this_week=false
    next_week=false
    two_weeks_later=false

    # Get the current day of the week (1 = Monday, 7 = Sunday)
    current_day=$(date +%u)

    # Determine the start of the current week, the start of the next week, and the start of the week after that
    if ((current_day < 2)); then
        # Today is Monday, so the current week starts on THIS Monday
        current_week_start=$(date -d "this Monday" +%s)
        next_week_start=$((current_week_start + 604800))         # Start of the next week
        week_after_next_week_start=$((next_week_start + 604800)) # Start of the week after the next week
    else
        # Today is Tuesday or later, so the current week starts on the LAST Monday
        current_week_start=$(date -d "last Monday" +%s)
        next_week_start=$((current_week_start + 604800))         # Start of the next week
        week_after_next_week_start=$((next_week_start + 604800)) # Start of the week after the next week
    fi

    # Check which week the given timestamp belongs to and echo the corresponding message
    if [[ $curr_date -ge $current_week_start && $curr_date -lt $next_week_start ]]; then
        this_week=true
    elif [[ $curr_date -ge $next_week_start && $curr_date -lt $week_after_next_week_start ]]; then
        next_week=true
    else
        two_weeks_later=true
    fi

    # if curr_date is in this week or next week then check for available slots in G
    if [[ "$this_week" == "true" && "$CONST_CHECK_WEEK_THIS_PLACE_1" == "true" ]] || [[ "$next_week" == "true" && "$CONST_CHECK_WEEK_NEXT_PLACE_1" == "true" ]] || [[ "$two_weeks_later" == "true" && "$CONST_CHECK_WEEK_TWO_PLACE_1" == "true" ]]; then

        log_with_date "Checking PLACE_1 for: $(date -d @$curr_date '+%F (%A)')"

        # Execute the curl command and process the output
        result=$(curl -skb client_session=$CONST_COOKIE "${CONST_URL_PLACE_1}${curr_date}" |
            jq -r '.available_slots[] | select(.is_available == 1) | "\(.time | tonumber | . + 10800 | todate) \(.staff_id)"' |
            grep -E "(${CONST_CONVENIENT_HOURS}):")

        # Concatenate the result to a variable
        if [ -n "$result" ]; then
            log_with_date "Found!"
            log_with_date "PLACE_1: $result"
            concatenated_result+=("$PLACE_1: $result ")
        fi
    fi

    # if curr_date is in this week or in 2 weeks then check for available slots in M
    if [[ "$this_week" == "true" && "$CONST_CHECK_WEEK_THIS_PLACE_2" == "true" ]] || [[ "$next_week" == "true" && "$CONST_CHECK_WEEK_NEXT_PLACE_2" == "true" ]] || [[ "$two_weeks_later" == "true" && "$CONST_CHECK_WEEK_TWO_PLACE_2" == "true" ]]; then

        log_with_date "Checking PLACE_2 for: $(date -d @$curr_date '+%F (%A)')"

        # Execute the curl command and process the output
        result=$(curl -skb client_session=$CONST_COOKIE "${CONST_URL_PLACE_2}${curr_date}" |
            jq -r '.available_slots[] | select(.is_available == 1) | "\(.time | tonumber | . + 10800 | todate) \(.staff_id)"' |
            grep -E "(${CONST_CONVENIENT_HOURS}):")

        # Concatenate the result to a variable
        if [ -n "$result" ]; then
            log_with_date "Found! PLACE_2: $result"
            concatenated_result+=("$PLACE_2: $result ")
        fi
    fi
done

formatted_result="Available slots:\n"

for i in "${concatenated_result[@]}"; do
    formatted_result+="$i\n"
done

# Read the value of previous_result from the file
previous_result=$(cat $SCRIPT_DIR/previous_result.txt)

# Check if the current result is the same as the previous result or if the current result is only "Available slots:\n"
if [ "$formatted_result" == "$previous_result" ]; then
    log_with_date "No change detected - $formatted_result"
elif [ "$formatted_result" == "Available slots:\n" ]; then
    log_with_date "Empty result detected"
else
    log_with_date "Change detected: $formatted_result"
    # ./wsl-notify-send.exe "$formatted_result"

    # Send the email
    sendemail -f "$EMAIL" -t "$TO" -u "$SUBJECT" -m "$formatted_result \n\n$url_1\n\n$url_2" -s "$SMTP_SERVER:$SMTP_PORT" -xu "$EMAIL" -xp "$PASSWORD" -o tls=$SSL
fi

# Store the value of previous_result in a file
echo "$formatted_result" >$SCRIPT_DIR/previous_result.txt

log_with_date "Script finished"