/**
 * Analytics command
 */

import chalk from 'chalk';
import { AnalyticsService } from '../services/analytics';

export async function analyticsCommand(options: {
  clear?: boolean;
  export?: boolean;
  disable?: boolean;
  enable?: boolean;
}): Promise<void> {
  const analytics = new AnalyticsService();

  // Handle flags
  if (options.clear) {
    analytics.clear();
    console.log(chalk.green('✓ Analytics data cleared'));
    return;
  }

  if (options.disable) {
    analytics.setEnabled(false);
    console.log(chalk.yellow('⚠ Analytics disabled'));
    return;
  }

  if (options.enable) {
    analytics.setEnabled(true);
    console.log(chalk.green('✓ Analytics enabled'));
    return;
  }

  if (options.export) {
    console.log(analytics.export());
    return;
  }

  // Show summary
  const summary = analytics.getSummary();

  if (summary.totalCommands === 0) {
    console.log(chalk.gray('\nNo analytics data yet. Start using NeoHub to see your stats!\n'));
    return;
  }

  console.log(chalk.bold.cyan('\n📊 NeoHub Analytics\n'));

  // Overview
  console.log(chalk.bold('Overview'));
  console.log(`Total Commands: ${chalk.cyan(summary.totalCommands)}`);
  console.log(`Success Rate: ${chalk.cyan(summary.successRate.toFixed(1) + '%')}`);
  console.log(
    `Avg Response Time: ${chalk.cyan(
      summary.averageResponseTime > 0
        ? (summary.averageResponseTime / 1000).toFixed(1) + 's'
        : 'N/A'
    )}`
  );
  console.log('');

  // Command frequency
  console.log(chalk.bold('Most Used Commands'));
  const topCommands = Object.entries(summary.commandFrequency)
    .sort(([, a], [, b]) => b - a)
    .slice(0, 5);

  topCommands.forEach(([cmd, count]) => {
    const percentage = ((count / summary.totalCommands) * 100).toFixed(1);
    const bar = '█'.repeat(Math.round(parseInt(percentage) / 5));
    console.log(`  ${chalk.green(cmd.padEnd(12))} ${chalk.gray(bar)} ${chalk.cyan(count)} (${percentage}%)`);
  });
  console.log('');

  // Model usage
  if (Object.keys(summary.modelUsage).length > 0) {
    console.log(chalk.bold('Model Usage'));
    const topModels = Object.entries(summary.modelUsage)
      .sort(([, a], [, b]) => b - a)
      .slice(0, 5);

    topModels.forEach(([model, count]) => {
      const percentage = ((count / summary.totalCommands) * 100).toFixed(1);
      console.log(`  ${chalk.cyan('●')} ${model}: ${chalk.green(count)} (${percentage}%)`);
    });
    console.log('');
  }

  // Top performing models
  if (summary.topPerformingModels.length > 0) {
    console.log(chalk.bold('Top Performing Models'));
    summary.topPerformingModels.forEach(model => {
      const successRate = (
        (model.successCount / (model.successCount + model.failureCount)) *
        100
      ).toFixed(1);
      const avgTime = (model.avgDurationMs / 1000).toFixed(1);

      console.log(
        `  ${chalk.cyan(model.model.padEnd(25))} ` +
          chalk.gray(`[${model.taskType}]`.padEnd(20)) +
          ` ${chalk.green(successRate + '%')} success, ${chalk.gray(avgTime + 's')} avg`
      );
    });
    console.log('');
  }

  // Privacy notice
  console.log(
    chalk.gray('All analytics data is stored locally and never sent to the cloud.')
  );
  console.log(
    chalk.gray('Run ') +
      chalk.cyan('neohub analytics --disable') +
      chalk.gray(' to turn off analytics.')
  );
  console.log('');
}