import { NextRequest, NextResponse } from 'next/server';
import { requireRole } from '@/lib/auth';
import { db } from '@/lib/db';

export async function GET() {
  try {
    const { rows } = await db.query(
      'SELECT id, language, title, version, updated_at FROM terms_content ORDER BY language, updated_at DESC'
    );
    return NextResponse.json({ data: rows });
  } catch (error) {
    console.error('Error fetching all terms:', error);
    return NextResponse.json({ error: 'Failed to fetch terms' }, { status: 500 });
  }
}

export async function POST(request: NextRequest) {
  try {
    await requireRole('admin');
    const body = await request.json();
    const { language, title, content, version = '1.0' } = body;
    
    if (!language || !title || !content) {
      return NextResponse.json({ error: 'Language, title, and content are required' }, { status: 400 });
    }
    
    const { rows } = await db.query(
      'INSERT INTO terms_content (language, title, content, version) VALUES ($1, $2, $3, $4) RETURNING id, language, title, version, updated_at',
      [language, title, content, version]
    );
    
    return NextResponse.json({ data: rows[0] });
  } catch (error: any) {
    console.error('Error creating terms:', error);
    if (error.code === '23505') {
      return NextResponse.json({ error: 'Terms with this language and version already exists' }, { status: 409 });
    }
    return NextResponse.json({ error: error.message || 'Failed to create terms' }, { status: 500 });
  }
}

export async function PUT(request: NextRequest) {
  try {
    await requireRole('admin');
    const body = await request.json();
    const { id, title, content } = body;
    
    if (!id) {
      return NextResponse.json({ error: 'Terms ID is required' }, { status: 400 });
    }
    
    const { rows } = await db.query(
      'UPDATE terms_content SET title = $1, content = $2, updated_at = NOW() WHERE id = $3 RETURNING id, language, title, version, updated_at',
      [title, content, id]
    );
    
    if (rows.length === 0) {
      return NextResponse.json({ error: 'Terms not found' }, { status: 404 });
    }
    
    return NextResponse.json({ data: rows[0] });
  } catch (error: any) {
    console.error('Error updating terms:', error);
    return NextResponse.json({ error: error.message || 'Failed to update terms' }, { status: 500 });
  }
}