import { NextRequest, NextResponse } from 'next/server';
import { DEFAULT_RULES } from '@/lib/engine/rules';
import type { AutomationRule } from '@/lib/engine/rules';

// In-memory store (replace with Supabase when configured)
let rules: AutomationRule[] = DEFAULT_RULES.map((r, i) => ({
  ...r,
  id: `rule-${i + 1}`,
  created_at: new Date().toISOString(),
  updated_at: new Date().toISOString(),
}));

export async function GET() {
  return NextResponse.json({ success: true, data: rules });
}

export async function POST(request: NextRequest) {
  try {
    const body = await request.json();
    const newRule: AutomationRule = {
      ...body,
      id: `rule-${Date.now()}`,
      created_at: new Date().toISOString(),
      updated_at: new Date().toISOString(),
    };
    rules.push(newRule);
    return NextResponse.json({ success: true, data: newRule }, { status: 201 });
  } catch (error) {
    return NextResponse.json(
      { success: false, error: error instanceof Error ? error.message : 'Invalid data' },
      { status: 400 }
    );
  }
}

export async function PATCH(request: NextRequest) {
  try {
    const body = await request.json();
    const { id, ...updates } = body;
    const index = rules.findIndex((r) => r.id === id);
    if (index === -1) {
      return NextResponse.json({ success: false, error: 'Rule not found' }, { status: 404 });
    }
    rules[index] = { ...rules[index], ...updates, updated_at: new Date().toISOString() };
    return NextResponse.json({ success: true, data: rules[index] });
  } catch (error) {
    return NextResponse.json(
      { success: false, error: error instanceof Error ? error.message : 'Invalid data' },
      { status: 400 }
    );
  }
}

export async function DELETE(request: NextRequest) {
  try {
    const { searchParams } = request.nextUrl;
    const id = searchParams.get('id');
    if (!id) return NextResponse.json({ success: false, error: 'ID required' }, { status: 400 });
    rules = rules.filter((r) => r.id !== id);
    return NextResponse.json({ success: true });
  } catch (error) {
    return NextResponse.json(
      { success: false, error: error instanceof Error ? error.message : 'Error' },
      { status: 500 }
    );
  }
}