Create gmail-example.sh

Adds an example of how gmail can be used to send reauthentication link.

reader/nordigen/hooks/gmail-example.sh

@@ -0,0 +1,68 @@
+#!/bin/sh
+
+# This script will send and e-mail with reauthentication link using gmail
+#
+# Configuration is done in the /data/gmail_config.env
+# Environment variables expected
+#
+# sender_email
+# app_specific_password
+# recipient
+#
+
+# Check if the required parameters are provided
+if [ "$#" -ne 2 ]; then
+  echo "Usage: $0 <status> <link>"
+  exit 1
+fi
+
+# Load Gmail credentials from the file
+if [ -f "/data/gmail_config.env" ]; then
+  . "/data/gmail_config.env"
+else
+  echo "Error: gmail_config.env file not found."
+  exit 1
+fi
+
+# Set the parameters
+status="$1"
+link="$2"
+
+# Check if msmtp is installed, and install it if not
+if ! command -v msmtp > /dev/null; then
+  echo "Installing msmtp..."
+  apk update
+  apk add msmtp
+fi
+
+# Create a temporary file for the email message
+email_file=$(mktemp)
+echo -e "Subject: YNABber needs reauthentication\n\nStatus: $status\nLink: $link" > "$email_file"
+
+# Generate the .msmtprc content
+msmtprc_content=$(cat <<EOL
+defaults
+auth on
+tls on
+tls_starttls on
+tls_trust_file /etc/ssl/certs/ca-certificates.crt
+
+account gmail
+host smtp.gmail.com
+port 587
+from $sender_email
+user $sender_email
+password $app_specific_password
+
+logfile /data/msmtp.log
+EOL
+)
+
+# Write the content to ~/.msmtprc
+echo "$msmtprc_content" > ~/.msmtprc
+
+# Use msmtp to send the email
+msmtp -a gmail -t "$recipient" < "$email_file"
+
+# Clean up the temporary file
+rm "$email_file"