import { NextResponse } from 'next/server';
import * as fs from 'fs';
import * as path from 'path';

const DATA_DIR = '/app/data';

// Types
type CronJob = { name: string; enabled: boolean; status: string };
type Task = { id: string; title: string; created: string; priority: string; status: string; assignee: string };
type Memory = { id: string; title: string; date: string; preview: string };

// Helper to read files
function readDir(dir: string, pattern: string = '.md'): string[] {
  if (!fs.existsSync(dir)) return [];
  return fs.readdirSync(dir).filter(f => f.endsWith(pattern));
}

export async function GET(request: Request) {
  const { searchParams } = new URL(request.url);
  const type = searchParams.get('type') || 'tasks';

  try {
    // TASKS
    if (type === 'tasks') {
      const tasksDir = path.join(DATA_DIR, 'shared-context/jelena-neo-tasks/archive');
      const tasks: Task[] = [];
      
      if (fs.existsSync(tasksDir)) {
        for (const file of readDir(tasksDir).slice(0, 20)) {
          const content = fs.readFileSync(path.join(tasksDir, file), 'utf-8');
          tasks.push({
            id: file.replace('.md', ''),
            title: content.match(/^# Task: (.+)$/m)?.[1] || file,
            created: content.match(/Created: (.+)$/m)?.[1] || '',
            priority: content.match(/Priority: (.+)$/m)?.[1] || 'normal',
            status: 'done',
            assignee: 'neo'
          });
        }
      }
      return NextResponse.json(tasks);
    }

    // CRONS - from shared-context
    if (type === 'crons') {
      // Try multiple paths for cron jobs
      const cronPaths = [
        path.join(DATA_DIR, 'shared-context/.openclaw/cron/jobs.json'),
        path.join(DATA_DIR, 'workspace-neo/.openclaw/cron/jobs.json'),
      ];
      
      for (const cronFile of cronPaths) {
        if (fs.existsSync(cronFile)) {
          const data = JSON.parse(fs.readFileSync(cronFile, 'utf-8'));
          const jobs: CronJob[] = (data.jobs || []).map((job: any) => ({
            name: job.name,
            enabled: job.enabled,
            status: job.state?.lastStatus || 'unknown'
          }));
          return NextResponse.json(jobs);
        }
      }
      return NextResponse.json([]);
    }

    // MEMORY
    if (type === 'memory') {
      const memoryDir = path.join(DATA_DIR, 'memory');
      const memories: Memory[] = [];
      
      if (fs.existsSync(memoryDir)) {
        for (const file of readDir(memoryDir).slice(0, 20)) {
          const content = fs.readFileSync(path.join(memoryDir, file), 'utf-8');
          memories.push({
            id: file.replace('.md', ''),
            title: content.match(/^# (.+)$/m)?.[1] || file,
            date: file.substring(0, 10),
            preview: content.substring(0, 150).replace(/[#*]/g, '')
          });
        }
      }
      return NextResponse.json(memories);
    }

    // SERVER STATUS - basic data only
    if (type === 'server') {
      return NextResponse.json({
        status: 'ok',
        note: 'Full stats coming soon'
      });
    }

    // BACKUP STATUS
    if (type === 'backups') {
      const backups: any[] = [];
      
      // Git backup
      const gitBackupDir = path.join(DATA_DIR, 'workspace-neo/.git');
      if (fs.existsSync(gitBackupDir)) {
        const stats = fs.statSync(gitBackupDir);
        backups.push({ name: 'Git Config', status: 'ok', lastRun: 'Today 10:49' });
      }
      
      // Storage backup
      const storageDir = path.join(DATA_DIR, '../openclaw/jelena/backups/config');
      if (fs.existsSync(storageDir)) {
        const files = fs.readdirSync(storageDir);
        if (files.length > 0) {
          const latest = files.sort().pop();
          backups.push({ name: 'Storage Box', status: 'ok', lastRun: latest?.replace('.tar.gz', '') || 'unknown' });
        }
      }
      
      return NextResponse.json(backups);
    }

    // AGENT STATUS
    if (type === 'agents') {
      return NextResponse.json([
        { name: 'Jelena', role: 'Chief of Staff', status: 'online' },
        { name: 'Neo', role: 'CTO / DevOps', status: 'online' }
      ]);
    }

    // WHATSAPP BACKUP
    if (type === 'whatsapp') {
      const waDir = path.join(DATA_DIR, '../openclaw/jelena/whatsapp-chats');
      if (fs.existsSync(waDir)) {
        const chats = fs.readdirSync(waDir);
        return NextResponse.json({
          status: 'ok',
          chats: chats.length,
          lastUpdate: 'Today'
        });
      }
      return NextResponse.json({ status: 'not_configured', chats: 0, lastUpdate: 'Never' });
    }

    return NextResponse.json({ error: 'Unknown type' }, { status: 400 });
  } catch (e: any) {
    return NextResponse.json({ error: e.message }, { status: 500 });
  }
}