/**
 * Scenario Validation Helper Script
 * 
 * Verifies that all built-in and custom CBT scenarios conform to schema rules,
 * category invariants, and clinical requirements.
 */

import { SCENARIOS, CBT_GLOSSARY } from '../constants';
import { Scenario } from '../types';

const VALID_CATEGORIES: Scenario['category'][] = ['Social Anxiety', 'Workplace', 'Relationships', 'Self-Talk'];
const VALID_DIFFICULTIES: Scenario['difficulty'][] = ['Beginner', 'Intermediate', 'Advanced'];

interface ValidationResult {
  scenarioId: string;
  title: string;
  isValid: boolean;
  errors: string[];
  warnings: string[];
}

export function validateScenario(scenario: Scenario): ValidationResult {
  const errors: string[] = [];
  const warnings: string[] = [];

  if (!scenario.id || typeof scenario.id !== 'string') {
    errors.push('Missing or invalid "id"');
  }

  if (!scenario.title || scenario.title.trim().length === 0) {
    errors.push('Missing or empty "title"');
  }

  if (!scenario.description || scenario.description.trim().length === 0) {
    errors.push('Missing or empty "description"');
  }

  if (!VALID_CATEGORIES.includes(scenario.category)) {
    errors.push(`Invalid category: "${scenario.category}". Expected one of: ${VALID_CATEGORIES.join(', ')}`);
  }

  if (!VALID_DIFFICULTIES.includes(scenario.difficulty)) {
    errors.push(`Invalid difficulty: "${scenario.difficulty}". Expected one of: ${VALID_DIFFICULTIES.join(', ')}`);
  }

  if (!scenario.characterName || scenario.characterName.trim().length === 0) {
    errors.push('Missing or empty "characterName"');
  }

  if (!scenario.initialMessage || scenario.initialMessage.trim().length === 0) {
    errors.push('Missing or empty "initialMessage"');
  }

  if (!Array.isArray(scenario.cbtFocus) || scenario.cbtFocus.length === 0) {
    errors.push('cbtFocus must be a non-empty array of strings');
  } else {
    // Check against glossary terms
    const glossaryTerms = CBT_GLOSSARY.map(g => g.term.toLowerCase());
    scenario.cbtFocus.forEach(focus => {
      const match = glossaryTerms.some(term => term === focus.toLowerCase() || focus.toLowerCase().includes(term));
      if (!match) {
        warnings.push(`CBT Focus item "${focus}" does not directly match any term in the CBT_GLOSSARY.`);
      }
    });
  }

  if (!scenario.systemInstruction || scenario.systemInstruction.trim().length === 0) {
    errors.push('Missing or empty "systemInstruction"');
  } else {
    if (!scenario.systemInstruction.includes('INTERNAL CBT LOGIC') && !scenario.systemInstruction.includes('LOGIC:')) {
      warnings.push('systemInstruction does not contain explicit "INTERNAL CBT LOGIC" branching rules.');
    }
  }

  return {
    scenarioId: scenario.id,
    title: scenario.title,
    isValid: errors.length === 0,
    errors,
    warnings,
  };
}

function run() {
  console.log('🔍 Validating Cognitive Clarity Scenario Catalog...\n');
  let totalErrors = 0;
  let totalWarnings = 0;

  SCENARIOS.forEach(scenario => {
    const result = validateScenario(scenario);
    const statusIcon = result.isValid ? '✅' : '❌';
    console.log(`${statusIcon} [${scenario.difficulty.toUpperCase()}] ${scenario.title} (${scenario.id})`);
    
    if (result.errors.length > 0) {
      console.log('   Errors:');
      result.errors.forEach(e => console.log(`     - ❌ ${e}`));
      totalErrors += result.errors.length;
    }
    
    if (result.warnings.length > 0) {
      console.log('   Warnings:');
      result.warnings.forEach(w => console.log(`     - ⚠️  ${w}`));
      totalWarnings += result.warnings.length;
    }
  });

  console.log('\n========================================');
  console.log(`Summary: ${SCENARIOS.length} scenarios analyzed.`);
  console.log(`Errors: ${totalErrors}, Warnings: ${totalWarnings}`);
  console.log('========================================\n');

  if (totalErrors > 0) {
    process.exit(1);
  }
}

if (process.argv[1]?.endsWith('validate-scenarios.ts') || process.argv[1]?.endsWith('validate-scenarios.js')) {
  run();
}