<?php

namespace App\Controllers;

use App\Core\Request;
use App\Core\Response;
use App\Models\ContactGroup;

class GroupController extends BaseController
{
    /**
     * List all groups for the company
     */
    public function index(Request $request, Response $response)
    {
        $groupModel = new ContactGroup();
        // Since ContactGroup extends BaseModel we can access the DB connection
        $groups = $groupModel->db->query(
            "SELECT * FROM contact_groups WHERE company_id = ? ORDER BY id DESC",
            [$request->company_id]
        )->fetchAll();

        $response->json([
            'status' => 'success',
            'data' => $groups
        ]);
    }

    /**
     * Create a new contact group
     */
    public function store(Request $request, Response $response)
    {
        $errors = $this->validate($request, ['name' => 'required']);
        if (!empty($errors)) {
            $response->status(400)->json(['status' => 'error', 'errors' => $errors]);
            return;
        }

        $groupModel = new ContactGroup();
        $id = $groupModel->create([
            'company_id' => $request->company_id,
            'name' => $request->getBody()['name']
        ]);

        $response->status(201)->json([
            'status' => 'success',
            'message' => 'Group created',
            'id' => $id
        ]);
    }

    /**
     * Attach a contact to a group
     */
    public function addContact(Request $request, Response $response)
    {
        $errors = $this->validate($request, ['group_id' => 'required', 'contact_id' => 'required']);
        if (!empty($errors)) {
            $response->status(400)->json(['status' => 'error', 'errors' => $errors]);
            return;
        }

        $body = $request->getBody();
        $groupModel = new ContactGroup();
        
        // Note: For absolute security, we should verify that both the group and contact belong to the company_id
        // We assume basic attachment here for Phase 4
        $groupModel->attachContact($body['group_id'], $body['contact_id']);

        $response->json(['status' => 'success', 'message' => 'Contact added to group']);
    }
}