#!/usr/bin/env node
/**
 * One-time script to populate reasonable 'expected' results
 * for all test case steps that currently have empty expected values.
 *
 * Run with: node server/scripts/populate-expected-results.js
 */

const fs = require('fs');
const path = require('path');
const yaml = require('js-yaml');

const TESTCASES_ROOT = path.join(__dirname, '..', '..', 'testcases');

// Heuristics for expected results based on action text
function getExpectedForAction(action) {
  const a = action.toLowerCase();

  if (a.includes('open admin portal') || a.includes('repository url in browser')) {
    return 'The admin portal or repository page loads successfully without errors, security warnings, or redirects.';
  }

  if (a.includes('navigate to the download') || a.includes('documentation portal')) {
    return 'The documentation or downloads section is displayed correctly and the relevant content area is accessible.';
  }

  if (a.includes('search or locate the relevant file')) {
    return 'The target file or link matching the filename pattern is found and listed correctly.';
  }

  if (a.includes('assert presence and visibility of the expected document')) {
    return 'The document is visible, has the correct title, and its content is accessible for verification.';
  }

  if (a.includes('log in to the admin portal')) {
    return 'Authentication succeeds using the provided credentials and the user is taken to the main dashboard.';
  }

  if (a.includes('navigate to the relevant settings section')) {
    return 'The correct configuration page or section for the feature is displayed.';
  }

  if (a.includes('read current configuration values')) {
    return 'Current configuration values are successfully retrieved via the UI or API and match the known baseline.';
  }

  if (a.includes('execute the main verification or configuration action')) {
    return 'The primary action described in the test completes successfully and produces the expected state or output.';
  }

  if (a.includes('capture evidence')) {
    return 'Relevant evidence (screenshot, log, or API response) is successfully captured and can be reviewed.';
  }

  if (a.includes('assert expected outcome')) {
    return 'All verification assertions pass and the system is confirmed to be in the expected final state.';
  }

  // PBX / Telephony specific
  if (a.includes('ensure sip endpoints') || a.includes('softphones are registered')) {
    return 'All required SIP endpoints show as registered with the correct status in the PBX.';
  }

  if (a.includes('initiate or receive call using the required scenario')) {
    return 'The call is successfully established between the endpoints with ringing and connection confirmed.';
  }

  if (a.includes('verify audio path, signaling, and media parameters')) {
    return 'Two-way audio is clear and bidirectional. Signaling (SIP) is correct and media parameters (codec, RTP/RTCP) match expectations.';
  }

  if (a.includes('prepare clean or previous-version vm')) {
    return 'A clean or appropriately versioned VM/image is powered on and ready for the test procedure.';
  }

  if (a.includes('perform installation or upgrade procedure')) {
    return 'The installation or upgrade procedure completes without errors and the expected new version is active.';
  }

  if (a.includes('post-install verification via portal')) {
    return 'Core services are running, the admin portal is reachable, and basic post-install checks pass.';
  }

  // Generic fallback
  return 'The action completes successfully and the system reaches the expected state described in the test.';
}

function processSteps(steps) {
  if (!Array.isArray(steps)) return { steps, changed: false };

  let changed = false;

  const newSteps = steps.map(step => {
    if (typeof step === 'string') {
      // Legacy string step - convert to object with estimated expected
      changed = true;
      return {
        action: step,
        expected: getExpectedForAction(step)
      };
    }

    if (step && typeof step === 'object') {
      if (!step.expected || step.expected.trim() === '') {
        changed = true;
        return {
          ...step,
          expected: getExpectedForAction(step.action || '')
        };
      }
    }

    return step;
  });

  return { steps: newSteps, changed };
}

function findYamlFiles(dir) {
  const results = [];
  const entries = fs.readdirSync(dir, { withFileTypes: true });

  for (const entry of entries) {
    const fullPath = path.join(dir, entry.name);
    if (entry.isDirectory()) {
      results.push(...findYamlFiles(fullPath));
    } else if (entry.name.endsWith('.yaml') && !entry.name.startsWith('SCHEMA')) {
      results.push(fullPath);
    }
  }
  return results;
}

function main() {
  console.log('Populating estimated "expected" results for test case steps...\n');

  const yamlFiles = findYamlFiles(TESTCASES_ROOT);
  let updatedCount = 0;

  for (const filePath of yamlFiles) {
    try {
      const content = fs.readFileSync(filePath, 'utf8');
      const doc = yaml.load(content);

      if (!doc || !doc.steps || !Array.isArray(doc.steps)) {
        continue;
      }

      const { steps: newSteps, changed } = processSteps(doc.steps);

      if (changed) {
        doc.steps = newSteps;

        const header = `# Updated via Autotest Editor - ${new Date().toISOString()}\n# Source of truth: this YAML file\n# Note: Expected results estimated based on step actions\n\n`;
        const newContent = header + yaml.dump(doc, { lineWidth: 100, noRefs: true });

        fs.writeFileSync(filePath, newContent, 'utf8');
        console.log(`✓ Updated: ${path.relative(TESTCASES_ROOT, filePath)}`);
        updatedCount++;
      }
    } catch (err) {
      console.error(`✗ Error processing ${filePath}: ${err.message}`);
    }
  }

  console.log(`\nDone. Updated ${updatedCount} test case file(s).`);
}

main();