# Script to handle automating/interacting with himalaya email server

# $BAT_PATH and $HIMALAYA_PATH are provided by .bashrc, where this
# file is sourced from

alias eml="$HIMALAYA_PATH list -s 10"  # List emails in default inbox
alias ems="$HIMALAYA_PATH send"  # Provide email via stdin and send
alias emwatch="watch -g -c -n 60 $HIMALAYA_PATH list -s 2" # List emails every 60 seconds, if something changes, stop watching

# Read email passed and page into bat/less
function emr() {
    READER="/bin/less"
    if [ ! -z $BAT_PATH ]; then
	READER=$BAT_PATH
    fi
    $HIMALAYA_PATH read $1 | $READER
}

# Generate template for new email reply and open in either emacs
# or vim, depending on whether emacs server is running
function emw() {
    if [ -z $1 ]; then
	echo "Must provide emw an emailID"
	return 1
    fi

    EMAIL_FILE=$(mktemp)
    $HIMALAYA_PATH template reply $1 > $EMAIL_FILE
    email_file_editor $EMAIL_FILE
    email_sender $EMAIL_FILE
}

# Generate template for a new email, as above
function emn() {
    EMAIL_FILE=$(mktemp)
    
    $HIMALAYA_PATH template new > $EMAIL_FILE
    email_file_editor $EMAIL_FILE
    email_sender $EMAIL_FILE

}

function email_file_editor() {
    EMAIL_FILE=$1
    
    EMACS_SERVER_RUNNING=$(lsof -c emacs | grep server | wc -l)
    if [ $EMACS_SERVER_RUNNING -gt 0 ]; then
	emacsclient -c $EMAIL_FILE
    else
	$EDITOR $EMAIL_FILE
    fi
}

function email_sender() {
    EMAIL_FILE=$1
    cat $EMAIL_FILE

    echo -n "Do you want to send this email [y/n]: "
    read USER_REPONSE

    if [[ "$USER_REPONSE" == *"y"* ]]; then
	echo "Sending email..."
	cat -p $EMAIL_FILE | $HIMALAYA_PATH send
	rm $EMAIL_FILE
    else
	echo "Aborting, email file at: $EMAIL_FILE"
    fi   
}

function clean_old_emails() {
    EMAILS_MATCHING=$(grep Content /tmp/tmp.* | cut -d ":" -f 1 | wc -l)
    echo -n "Delete $EMAILS_MATCHING old emails: [y/n]: "
    read USER_REPONSE
    if [[ "$USER_REPONSE" == *"y"* ]]; then
	for file in $(grep Content /tmp/tmp.* | cut -d ":" -f 1); do rm $file; done
    else
	echo "Not deleting..."
    fi
}