import { NextRequest, NextResponse } from 'next/server';
import { supabase } from '@/lib/supabase';
import { ensureAdmin, ensureAuthenticated, getAuthContext } from '@/lib/access-control';

export async function GET(
  request: NextRequest,
  { params }: { params: { id: string } }
) {
  const ctx = await getAuthContext(request);
  const auth = ensureAuthenticated(ctx);
  if (!auth.ok) {
    return NextResponse.json({ error: auth.error }, { status: auth.status });
  }

  let query = supabase
    .from('metrics')
    .select('*')
    .eq('id', params.id);

  if (!ctx!.isAdmin) query = query.eq('is_active', true);

  const { data, error } = await query.maybeSingle();

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

  if (!data) {
    return NextResponse.json({ error: '指标不存在' }, { status: 404 });
  }

  return NextResponse.json(data);
}

export async function PATCH(
  request: NextRequest,
  { params }: { params: { id: string } }
) {
  const ctx = await getAuthContext(request);
  const auth = ensureAdmin(ctx);
  if (!auth.ok) {
    return NextResponse.json({ error: auth.error }, { status: auth.status });
  }

  const body = await request.json();
  const { name, unit, direction, category, is_active } = body;

  const updateData: Record<string, unknown> = { updated_at: new Date().toISOString() };
  if (name !== undefined) updateData.name = name;
  if (unit !== undefined) updateData.unit = unit;
  if (direction !== undefined) updateData.direction = direction;
  if (category !== undefined) updateData.category = category;
  if (is_active !== undefined) updateData.is_active = is_active;

  const { data, error } = await supabase
    .from('metrics')
    .update(updateData)
    .eq('id', params.id)
    .select()
    .single();

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

  return NextResponse.json(data);
}

export async function DELETE(
  request: NextRequest,
  { params }: { params: { id: string } }
) {
  const ctx = await getAuthContext(request);
  const auth = ensureAdmin(ctx);
  if (!auth.ok) {
    return NextResponse.json({ error: auth.error }, { status: auth.status });
  }

  const { error } = await supabase
    .from('metrics')
    .delete()
    .eq('id', params.id);

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

  return NextResponse.json({ success: true });
}