/**
 * @node error-trigger
 * @name Error Trigger
 * @category triggers
 * @version 1.0.0
 * @description Starts a workflow that another workflow nominated to run when it fails, and passes on what failed
 * @icon alert-triangle
 * @trigger
 */

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

const inputSchema = {
    type: 'object',
    properties: {
        data: {
            type: 'any',
            description: 'Failure details supplied when the workflow was triggered'
        }
    }
};

const outputSchema = {
    type: 'object',
    properties: {
        failedWorkflowId: { type: 'string', description: 'The workflow that failed' },
        failedWorkflowName: { type: 'string', description: 'Its name at the time it failed' },
        failedExecutionId: { type: 'string', description: 'The execution that failed' },
        error: { type: 'string', description: 'The error it reported' },
        failedAt: { type: 'number', description: 'When the failure was recorded, in milliseconds' }
    }
};

async function execute(config, input, context) {
    // Other triggers report that something happened. This one reports what
    // happened, so the details arrive as its input and are passed straight on.
    const details = (input && input.data) || input || {};

    const failedWorkflowName = details.failedWorkflowName || '';
    smartbotic.log.info('Error trigger: handling failure of ' + (failedWorkflowName || 'an unknown workflow'));

    return {
        failedWorkflowId: details.failedWorkflowId || '',
        failedWorkflowName: failedWorkflowName,
        failedExecutionId: details.failedExecutionId || '',
        error: details.error || '',
        failedAt: details.failedAt || Date.now()
    };
}

module.exports = { configSchema, inputSchema, outputSchema, execute };