import { NextRequest, NextResponse } from 'next/server';
import { supabase } from '@/lib/supabase';

export async function GET(request: NextRequest) {
  const { searchParams } = new URL(request.url);
  const activeOnly = searchParams.get('active_only') === 'true';
  const category = searchParams.get('category');

  let query = supabase.from('metrics').select('*').order('name', { ascending: true });

  if (activeOnly) query = query.eq('is_active', true);
  if (category) query = query.eq('category', category);

  const { data, error } = await query;

  if (error) {
    return NextResponse.json({ error: error.message }, { status: 500 });
  }

  return NextResponse.json(data);
}

export async function POST(request: NextRequest) {
  const body = await request.json();
  const { name, unit, direction, category } = body;

  if (!name || !unit) {
    return NextResponse.json({ error: '名称和单位为必填项' }, { status: 400 });
  }

  const { data, error } = await supabase
    .from('metrics')
    .insert({
      name,
      unit,
      direction: direction || 'increase',
      category,
      is_active: true,
    })
    .select()
    .single();

  if (error) {
    return NextResponse.json({ error: error.message }, { status: 500 });
  }

  return NextResponse.json(data, { status: 201 });
}