'use strict';

/**
 * Usage: node compiliance-js/preview-prompt.js path/to/oas.json [operationId]
 * Reads the OAS file, loads prepare-llm-request.js in a sandbox, and prints the prompt.
 */

const fs = require('fs');
const path = require('path');
const vm = require('vm');

const [, , oasPath, operationIdArg] = process.argv;
if (!oasPath) {
    console.error('Usage: node compiliance-js/preview-prompt.js <oas.json> [operationId]');
    process.exit(1);
}

const oas = JSON.parse(fs.readFileSync(oasPath, 'utf8'));
let code = fs.readFileSync(path.join(__dirname, 'prepare-llm-request.js'), 'utf8');
code = code.replace(/\nreturn\s+prepareLlmRequest\(msg,\s*node\);?\s*$/m, '\n');

const context = {
    msg: { oas_def: oas, operationId: operationIdArg || 'createResource' },
    node: {
        error: (err) => { throw new Error(err); },
        warn: (...args) => console.warn('[WARN]', ...args),
        log: (...args) => console.log('[LOG]', ...args),
    },
    console,
    Buffer,
    process,
    require,
    setTimeout,
    env: { get: () => undefined },
};

vm.createContext(context);
vm.runInContext(code, context);

if (!context.buildPrompt || !context.resolveOperationContext || !context.extractOpenApiDocument) {
    throw new Error('Failed to load helper functions from prepare-llm-request.js');
}

const apiDoc = context.extractOpenApiDocument(context.msg);
const operationCtx = context.resolveOperationContext(context.msg, apiDoc);
const prompt = context.buildPrompt(operationCtx, apiDoc, context.msg);

console.log(prompt);