/**
 * @node imap-fetch
 * @name IMAP Fetch Email
 * @category email
 * @version 1.0.1
 * @description Fetch the full content of an email from an IMAP server.
 * @icon download
 */

const configSchema = {
    type: 'object',
    properties: {
        credentialId: {
            type: 'string',
            title: 'IMAP Credential',
            description: 'Select the IMAP credential to use for authentication',
            dynamicOptions: {
                source: 'credentials',
                filter: { type: 'imap' }
            }
        },
        mailbox: {
            type: 'string',
            title: 'Mailbox',
            description: 'The mailbox containing the email',
            default: 'INBOX'
        },
        uid: {
            type: 'string',
            title: 'Email UID',
            description: 'The unique identifier of the email to fetch (can be provided from input)'
        },
        includeRaw: {
            type: 'boolean',
            title: 'Include Raw',
            description: 'Include the raw email content in the output',
            default: false
        }
    },
    required: ['credentialId']
};

const inputSchema = {
    type: 'object',
    properties: {
        uid: {
            type: 'string',
            description: 'Email UID to fetch'
        },
        mailbox: {
            type: 'string',
            description: 'Override mailbox from input'
        }
    }
};

const outputSchema = {
    type: 'object',
    properties: {
        uid: { type: 'string' },
        subject: { type: 'string' },
        from: { type: 'string' },
        to: { type: 'string' },
        date: { type: 'string' },
        body: { type: 'string' },
        raw: { type: 'string' }
    }
};

const outputs = [
    { name: 'main', displayName: 'Email Content', type: 'object', color: '#8b5cf6' }
];

module.exports = {
    configSchema,
    inputSchema,
    outputSchema,
    outputs,

    async execute(config, input, context) {
        const credentialId = config.credentialId;
        const mailbox = input.mailbox || config.mailbox || 'INBOX';
        const uid = input.uid || config.uid;
        const includeRaw = config.includeRaw || false;

        if (!credentialId) {
            throw new Error('IMAP credential is required');
        }

        if (!uid) {
            throw new Error('Email UID is required');
        }

        // Fetch the email
        const fetchResult = smartbotic.imap.fetch({
            credentialId,
            mailbox,
            uid
        });

        if (!fetchResult.success) {
            throw new Error(`IMAP fetch failed: ${fetchResult.error}`);
        }

        const result = {
            uid: fetchResult.uid,
            subject: fetchResult.subject,
            from: fetchResult.from,
            to: fetchResult.to,
            date: fetchResult.date,
            body: fetchResult.body,
            mailbox
        };

        if (includeRaw) {
            result.raw = fetchResult.raw;
        }

        return result;
    }
};