n8n-nodes-imap-ai/dist/nodes/Imap/operations/downloadAttachment.js

Simplified IMAP node for n8n with AI-agent support. Clean and modular email and mailbox management for automation workflows.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.DownloadAttachmentOperation = void 0;
const mailparser_1 = require("mailparser");
const n8n_workflow_1 = require("n8n-workflow");
const helpers_1 = require("../utils/helpers");
class DownloadAttachmentOperation {
    async execute(executeFunctions, client, itemIndex) {
        const mailboxParam = executeFunctions.getNodeParameter('mailbox', itemIndex);
        const mailbox = helpers_1.ParameterValidator.extractMailboxName(mailboxParam);
        const emailUid = executeFunctions.getNodeParameter('emailUid', itemIndex);
        const attachmentIndex = executeFunctions.getNodeParameter('attachmentIndex', itemIndex);
        helpers_1.ParameterValidator.validateMailbox(mailboxParam);
        helpers_1.ParameterValidator.validateUid(emailUid);
        try {
            await client.mailboxOpen(mailbox);
        }
        catch (error) {
            throw new n8n_workflow_1.NodeApiError(executeFunctions.getNode(), {
                message: `Failed to open mailbox ${mailbox}: ${error.message}`,
            });
        }
        let message;
        try {
            const searchResults = await client.search({ uid: emailUid.toString() });
            if (searchResults.length === 0) {
                throw new n8n_workflow_1.NodeApiError(executeFunctions.getNode(), {
                    message: `Email with UID ${emailUid} not found in ${mailbox}`,
                });
            }
            const messageGenerator = client.fetch(emailUid.toString(), {
                source: true,
                uid: true,
            }, { uid: true });
            for await (const msg of messageGenerator) {
                message = msg;
                break;
            }
            if (!message) {
                throw new Error(`No message data received for UID ${emailUid}`);
            }
        }
        catch (error) {
            throw new n8n_workflow_1.NodeApiError(executeFunctions.getNode(), {
                message: `Failed to fetch email with UID ${emailUid}: ${error.message}`,
            });
        }
        if (!message || !message.source) {
            throw new n8n_workflow_1.NodeApiError(executeFunctions.getNode(), {
                message: `Email with UID ${emailUid} not found`,
            });
        }
        let parsed;
        try {
            parsed = await (0, mailparser_1.simpleParser)(message.source);
        }
        catch (error) {
            throw new n8n_workflow_1.NodeApiError(executeFunctions.getNode(), {
                message: `Failed to parse email: ${error.message}`,
            });
        }
        if (!parsed.attachments || parsed.attachments.length === 0) {
            throw new n8n_workflow_1.NodeApiError(executeFunctions.getNode(), {
                message: 'No attachments found in this email',
            });
        }
        if (attachmentIndex >= parsed.attachments.length) {
            throw new n8n_workflow_1.NodeApiError(executeFunctions.getNode(), {
                message: `Attachment index ${attachmentIndex} not found. Email has ${parsed.attachments.length} attachments.`,
            });
        }
        const attachment = parsed.attachments[attachmentIndex];
        return {
            filename: attachment.filename,
            contentType: attachment.contentType,
            size: attachment.size,
            content: attachment.content.toString('base64'),
        };
    }
}
exports.DownloadAttachmentOperation = DownloadAttachmentOperation;
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