#!/bin/env bash

# mailboxes to monitor
MAILBOXES=("personal" "school")
# named pipe for receiving refresh events
# from mail sync script
PIPE="/tmp/email_refresh_pipe"
COUNT="/tmp/email_count"

# Create pipe if doesn't exist
[[ -p "$PIPE" ]] || mkfifo "$PIPE"
[[ -e "$COUNT" ]] || echo "0" > "$COUNT"

# Get unread counts and format for waybar
get_unread_counts() {
    for mailbox in "${MAILBOXES[@]}"; do
        count=$(notmuch count --output=messages "tag:unread and path:$mailbox/**")
        printf "%s: %s " "$mailbox" "$count" 
    done
    # we print a newline to let waybar know to display
    # what we just printed
    printf "|\n"
}


# run once for initial output
echo "mail init"
# begin event loop
while true; do
    # cat blocks until data comes through pipe
    # redirecting to null b.c. we don't want the
    # pipe's contents to be printed to stdout
    PAYLOAD=$(cat /tmp/email_refresh_pipe)
    if [ "$PAYLOAD" == "new" ]; then
        count=$(cat "$COUNT")
        ((count++)) > "$COUNT"
    elif [ "$PAYLOAD" == "reset" ]; then
        "0" > "$COUNT"
    elif [ "$PAYLOAD" == "show_precise" ]; then
        get_unread_counts
    elif [ "$PAYLOAD" == "show_since" ]; then
        echo "new: $(cat "$COUNT")"
    fi
done