<?php

namespace App\Controllers\View;

use App\Controllers\BaseController;
use App\Models\StaffModel;
use App\Models\UserModel;
use App\Models\TeacherClassModel;
use App\Models\ConfigurationModel;
use App\Services\StaffDirectorySyncService;

class StaffController extends BaseController
{
    protected $configModel;
    protected $semester;
    protected $schoolYear;
    protected $teacherClassModel;
    protected $userModel;
    protected $staffModel;
    protected StaffDirectorySyncService $staffDirectorySync;

    public function __construct()
    {
        // Initialize the config model
        $this->configModel = new ConfigurationModel(); // Assuming ConfigModel is the model handling configurations
        $this->teacherClassModel = new TeacherClassModel();
        $this->userModel = new UserModel();
        $this->staffModel = new StaffModel();
        $this->staffDirectorySync = service('staffDirectorySync');

        // Retrieve the configuration values
        $this->semester = $this->configModel->getConfig('semester');
        $this->schoolYear = $this->configModel->getConfig('school_year');
    }

    public function index()
    {
        if ($redirect = $this->redirectWithoutLegacyTermFilters('staff/index')) {
            return $redirect;
        }

        $schoolYear = $this->currentSchoolYearName((string) ($this->schoolYear ?? ''));

        $directory = $this->staffDirectorySync->activeStaffForSchoolYear($schoolYear);

        return view('staff/index', [
            'staff' => $directory['staff'],
            'issues_count' => $directory['issues_count'],
            'semester' => $this->semester,
            'school_year' => $schoolYear,
        ]);
    }

    private function redirectWithoutLegacyTermFilters(string $route): ?\CodeIgniter\HTTP\RedirectResponse
    {
        $legacyTermKeys = ['school_year', 'schoolYear', 'year', 'semester'];
        $query = $this->request->getGet();
        $hasLegacyTermFilter = false;

        foreach ($legacyTermKeys as $key) {
            if (array_key_exists($key, $query)) {
                unset($query[$key]);
                $hasLegacyTermFilter = true;
            }
        }

        if (!$hasLegacyTermFilter) {
            return null;
        }

        $target = site_url($route) . (!empty($query) ? '?' . http_build_query($query) : '');
        return redirect()->to($target);
    }

    public function create()
    {
        return view('staff/create');
    }

    public function store()
    {
        $now = utc_now();
        $payload = [
            'firstname'   => $this->request->getPost('firstname'),
            'lastname'    => $this->request->getPost('lastname'),
            'email'       => $this->request->getPost('email'),
            'phone'       => $this->request->getPost('phone'),
            'role_name'   => $this->request->getPost('role_name'),
            'school_year' => $this->request->getPost('school_year') ?: $this->schoolYear,
            'status'      => $this->request->getPost('status') ?? 'Active',
            'created_at'  => $now,
            'updated_at'  => $now,
        ];

        if (!$this->staffModel->insert($payload)) {
            return redirect()->back()->withInput()->with('error', 'Failed to create staff.');
        }

        return redirect()->to('/staff')->with('success', 'Staff member added.');
    }

    public function edit($id)
    {
        $user = $this->staffModel->find($id);

        if (!$user) {
            return redirect()->to('staff')->with('error', 'Staff member not found.');
        }

        return view('staff/edit', ['user' => $user]);
    }

    public function update($id)
    {
        // Only update fields provided by the form to avoid wiping data
        $data = [];
        foreach (['firstname','lastname','email','phone','role_name','school_year','status'] as $field) {
            $val = $this->request->getPost($field);
            if ($val !== null && $val !== '') {
                $data[$field] = $val;
            }
        }
        // Always bump updated_at
        $data['updated_at'] = utc_now();

        if (empty($data)) {
            return redirect()->back()->with('error', 'No changes detected.');
        }

        if (!$this->staffModel->update($id, $data)) {
            return redirect()->back()->withInput()->with('error', 'Failed to update staff.');
        }

        return redirect()->to('/staff')->with('success', 'Staff member updated.');
    }
}