/**
 * @node ocr-job-stats
 * @name OCR Job Stats
 * @category ocr
 * @version 1.0.1
 * @description Get OCR job queue statistics
 * @icon bar-chart-2
 */

const configSchema = {
    type: 'object',
    properties: {
        baseUrl: {
            type: 'string',
            title: 'API Base URL',
            default: 'http://localhost:3000',
            description: 'Base URL of the OCR API'
        },
        credentialId: {
            type: 'string',
            title: 'Credential',
            description: 'Bearer or API Key credential for authentication',
            dynamicOptions: {
                source: 'credentials',
                filter: { type: 'api_key' }
            }
        }
    },
    required: ['baseUrl']
};

const inputSchema = {
    type: 'object',
    properties: {}
};

const outputSchema = {
    type: 'object',
    properties: {
        stats: {
            type: 'object',
            properties: {
                pending: { type: 'number' },
                processing: { type: 'number' },
                completed: { type: 'number' },
                failed: { type: 'number' }
            }
        }
    }
};

const outputs = [
    { name: 'main', displayName: 'Stats', type: 'object', color: '#f59e0b' }
];

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

    async execute(config, input, context) {
        const baseUrl = (config.baseUrl || 'http://localhost:3000').replace(/\/$/, '');

        // Build headers
        const headers = {};

        smartbotic.log.info(`OCR Job Stats - credentialId: ${config.credentialId || 'NOT SET'}`);

        if (config.credentialId) {
            const auth = smartbotic.credentials.get(config.credentialId);
            smartbotic.log.info(`Credential lookup result: ${JSON.stringify(auth)}`);
            if (!auth.success) {
                throw new Error(`Failed to load credential: ${auth.error}`);
            }
            headers[auth.headerName] = auth.headerValue;
            smartbotic.log.info(`Auth header set: ${auth.headerName}`);
        } else {
            smartbotic.log.warn('No credential selected');
        }

        smartbotic.log.info(`OCR Get Job Stats from ${baseUrl}`);

        const response = smartbotic.http.request({
            method: 'GET',
            url: `${baseUrl}/api/jobs/stats`,
            headers: headers,
            timeout: 30000
        });

        if (response.status < 200 || response.status >= 300) {
            const errorMsg = typeof response.data === 'string' ? response.data : JSON.stringify(response.data);
            if (response.status === 401 && !config.credentialId) { throw new Error('Authentication required - please select a credential in node settings'); } throw new Error(`OCR API error (${response.status}): ${errorMsg}`);
        }

        const data = typeof response.data === 'string' ? JSON.parse(response.data) : response.data;

        return {
            stats: data.stats || data
        };
    }
};