"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getFileNameFromHeaders = getFileNameFromHeaders;
const n8n_workflow_1 = require("n8n-workflow");
function getFileNameFromHeaders(headers) {
    const who = "Utils::getFileNameFromHeaders:: ";
    if (!headers) {
        n8n_workflow_1.LoggerProxy.debug(who + 'No headers provided');
        return null;
    }
    const contentDisposition = Object.keys(headers).find(key => key.toLowerCase() === 'content-disposition');
    if (!contentDisposition || !headers[contentDisposition]) {
        n8n_workflow_1.LoggerProxy.debug(who + 'Content-Disposition header not found');
        return null;
    }
    const headerValue = headers[contentDisposition];
    n8n_workflow_1.LoggerProxy.debug(who + 'Found Content-Disposition header', { headerValue });
    const utf8Match = headerValue.match(/filename\*=UTF-8''([^;]+)/i);
    if (utf8Match) {
        try {
            const decodedFilename = decodeURIComponent(utf8Match[1]);
            n8n_workflow_1.LoggerProxy.debug(who + 'Extracted filename from UTF-8 format', { filename: decodedFilename });
            return decodedFilename;
        }
        catch (error) {
            n8n_workflow_1.LoggerProxy.error(who + 'Failed to decode UTF-8 filename', { error, encodedFilename: utf8Match[1] });
        }
    }
    const quotedMatch = headerValue.match(/filename="([^"]+)"/i);
    if (quotedMatch) {
        n8n_workflow_1.LoggerProxy.debug(who + 'Extracted filename from quoted format', { filename: quotedMatch[1] });
        return quotedMatch[1];
    }
    const unquotedMatch = headerValue.match(/filename=([^;]+)/i);
    if (unquotedMatch) {
        const filename = unquotedMatch[1].trim();
        n8n_workflow_1.LoggerProxy.debug(who + 'Extracted filename from unquoted format', { filename });
        return filename;
    }
    n8n_workflow_1.LoggerProxy.debug(who + 'Could not extract filename from Content-Disposition header', { headerValue });
    return null;
}
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