fetchResource.js

// ===================================================================
// Handler Function: fetchResource
// ===================================================================

// Import shared functions
const shared = require('sharedFunctions');

/**
 * Fetches a resource configuration by name from MCPStudio
 * @param {Object} params - Command parameters
 * @param {string} [params.resourceName] - Name of the resource to fetch (optional, defaults to error message)
 * @returns {null|null} Returns null after setting tool result with resource info or error
 */
function fetchResource(params) {
    var resourceName = params.resourceName || "MCP resource name required";

    var json = MCPStudio.resourceConfig(resourceName);
    if (!json) {
        let msg = "Failed to load resource: " + resourceName;
        MCPStudio.setToolResult(JSON.stringify({
            text: msg,
            metadata: {
                error: msg,
                operation: "fetchResource",
                success: false,
                mimeType: "plain/text",
                uri: "",
                name: "",
            }
        }));
        return null;
    }
    
    var resource = JSON.parse(json);
    if (!resource) {
        let msg = "Failed to parse resource: " + resourceName;
        MCPStudio.setToolResult(JSON.stringify({
            text: msg,
            metadata: {
                error: msg,
                operation: "fetchResource",
                success: false,
                mimeType: "plain/text",
                uri: "",
                name: "",
            }
        }));
        return null;
    }
    
    MCPStudio.setToolResult(JSON.stringify({
        text: resource.name + ": take a look following link:\n" + resource.uri,
        metadata: {
            operation: "fetchResource",
            success: true,
            mimeType: resource.mimeType,
            uri: resource.uri,
            name: resource.name,
        }
    }));

    return null;
}

module.exports = {
	fetchResource
};