#!/usr/bin/env node
/**
 * Test API Server with Project Seeding
 * 
 * A simple Express server that:
 * 1. Provides the plansLastUpdatedBetween endpoint for prefetch testing
 * 2. Automatically seeds test projects on startup
 * 3. Returns seeded project data in API responses
 * 
 * Usage:
 *   node scripts/test-api-server-with-seed.js [port]
 * 
 * Then in Android emulator, configure:
 *   api.serverMode = "localhost"
 *   api.servers.localhost.android = "http://10.0.2.2:3000"
 * 
 * @author Matthew Raymer
 * @version 1.0.0
 */

const express = require('express');
const { generateAllTestProjects, getMockApiResponse, DEFAULT_TEST_PROJECT_IDS } = require('./seed-test-projects');

const PORT = process.argv[2] || 3000;
const app = express();

// Store seeded projects in memory
let seededProjects = [];

// Middleware
app.use(express.json());
app.use((req, res, next) => {
  console.log(`📥 ${req.method} ${req.path}`);
  next();
});

/**
 * Seed test projects on startup
 */
function seedProjects(projectIds = DEFAULT_TEST_PROJECT_IDS) {
  seededProjects = generateAllTestProjects(projectIds);
  console.log(`🌱 Seeded ${seededProjects.length} test projects:`);
  seededProjects.forEach((project, index) => {
    console.log(`   ${index + 1}. ${project.planSummary.handleId} - ${project.planSummary.name}`);
  });
}

/**
 * POST /api/v2/report/plansLastUpdatedBetween
 * 
 * Endpoint that the plugin calls for starred projects prefetch
 */
app.post('/api/v2/report/plansLastUpdatedBetween', (req, res) => {
  const { planIds, afterId } = req.body;

  console.log('📥 Prefetch request received:', {
    planIds: planIds || 'not provided',
    afterId: afterId || 'none',
    authorization: req.headers.authorization ? 'present' : 'missing',
    timestamp: new Date().toISOString()
  });

  // Filter seeded projects to only those requested
  let filteredProjects = seededProjects;
  if (planIds && Array.isArray(planIds) && planIds.length > 0) {
    filteredProjects = seededProjects.filter(p =>
      planIds.includes(p.planSummary.handleId)
    );
    console.log(`   Filtered to ${filteredProjects.length} projects matching planIds`);
  }

  // Filter by afterId if provided
  if (afterId) {
    const afterIndex = filteredProjects.findIndex(p => p.planSummary.jwtId === afterId);
    if (afterIndex >= 0) {
      filteredProjects = filteredProjects.slice(afterIndex + 1);
      console.log(`   Filtered to ${filteredProjects.length} projects after ${afterId}`);
    }
  }

  // Generate response
  const response = {
    data: filteredProjects,
    hitLimit: false,
    pagination: {
      hasMore: false,
      nextAfterId: filteredProjects.length > 0
        ? filteredProjects[filteredProjects.length - 1].planSummary.jwtId
        : null
    }
  };

  console.log(`📤 Sending ${response.data.length} projects in response`);

  res.json(response);
});

/**
 * GET /api/test/projects
 * 
 * View all seeded projects (for debugging)
 */
app.get('/api/test/projects', (req, res) => {
  res.json({
    projects: seededProjects,
    count: seededProjects.length,
    timestamp: new Date().toISOString()
  });
});

/**
 * POST /api/test/seed-projects
 * 
 * Reseed test projects (useful for resetting)
 */
app.post('/api/test/seed-projects', (req, res) => {
  const { projectIds } = req.body;
  const idsToUse = projectIds || DEFAULT_TEST_PROJECT_IDS;
  
  seedProjects(idsToUse);
  
  res.json({
    success: true,
    message: `Seeded ${seededProjects.length} test projects`,
    count: seededProjects.length,
    projectIds: idsToUse
  });
});

/**
 * GET /api/test/health
 * 
 * Health check endpoint
 */
app.get('/api/test/health', (req, res) => {
  res.json({
    status: 'ok',
    server: 'test-api-server-with-seed',
    port: PORT,
    projectsSeeded: seededProjects.length,
    timestamp: new Date().toISOString()
  });
});

// Start server
seedProjects(); // Seed on startup

app.listen(PORT, () => {
  console.log('');
  console.log('🧪 Test API Server with Project Seeding');
  console.log('========================================');
  console.log(`📡 Server running on http://localhost:${PORT}`);
  console.log(`📱 Android emulator URL: http://10.0.2.2:${PORT}`);
  console.log('');
  console.log('Endpoints:');
  console.log(`  POST /api/v2/report/plansLastUpdatedBetween - Main prefetch endpoint`);
  console.log(`  GET  /api/test/projects - View all seeded projects`);
  console.log(`  POST /api/test/seed-projects - Reseed projects`);
  console.log(`  GET  /api/test/health - Health check`);
  console.log('');
  console.log('✅ Ready for prefetch testing!');
  console.log('');
});

// Handle graceful shutdown
process.on('SIGINT', () => {
  console.log('\n👋 Shutting down test API server...');
  process.exit(0);
});