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import { emails } from "gadget-server";
import type { Server } from "gadget-server";

/**
 * Boot plugin to configure SendGrid as the email transport provider
 * This plugin runs on app startup and configures the Gadget email system
 * to use SendGrid for sending emails.
 */
export default async function plugin(server: Server) {
  try {
    // Get SendGrid API key from environment variables
    const sendgridApiKey = process.env.SENDGRID_API_KEY;
    
    if (!sendgridApiKey) {
      throw new Error("SENDGRID_API_KEY environment variable is not set");
    }
    
    // Configure SendGrid transport
    const transport = {
      host: "smtp.sendgrid.net",
      port: 587,
      secure: false, // true for 465, false for other ports
      auth: {
        user: "apikey", // SendGrid requires this value to be "apikey"
        pass: sendgridApiKey,
      },
    };
    
    // Set the transport for Gadget emails
    emails.setTransport(transport);
    
    server.log.info("SendGrid email transport configured successfully");
  } catch (error) {
    // Log the error but don't crash the app
    server.log.error(error, "Failed to configure SendGrid email transport");
    
    // Depending on requirements, you might want to rethrow the error to prevent app startup
    // if email functionality is critical
    // throw error;
  }
}