<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Admin\Concerns\ScopedToTenant;
use App\Http\Controllers\Controller;
use App\Models\AuditLog;
use App\Models\EditableField;
use App\Models\UserOverride;
use App\Signature\ProfileService;
use App\Signature\VariableMap;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Validation\Rule;
use Illuminate\View\View;

/** Choix des champs que les agents peuvent modifier eux-mêmes (add-in et portail). */
class EditableFieldController extends Controller
{
    use ScopedToTenant;

    /** L'adresse e-mail n'est jamais modifiable : elle doit rester celle de la boîte. */
    private const EXCLUDED = ['email'];

    public function index(): View
    {
        $tenant = $this->tenantId();
        foreach (array_diff(array_keys(VariableMap::FIELDS), self::EXCLUDED) as $key) {
            EditableField::firstOrCreate(
                ['tenant_id' => $tenant, 'field' => $key],
                ['label' => VariableMap::FIELDS[$key]['label'], 'enabled' => false, 'validation_rule' => in_array($key, ['telephone', 'mobile'], true) ? 'phone' : 'text'],
            );
        }

        $usage = UserOverride::query()
            ->join('directory_users', 'directory_users.id', '=', 'user_overrides.directory_user_id')
            ->where('directory_users.tenant_id', $tenant)
            ->selectRaw('user_overrides.field, count(*) as n')->groupBy('user_overrides.field')->pluck('n', 'field');

        return view('admin.fields.index', [
            'fields' => EditableField::where('tenant_id', $tenant)->whereNotIn('field', self::EXCLUDED)
                ->get()->sortBy(fn ($f) => array_search($f->field, array_keys(VariableMap::FIELDS)))->values(),
            'types' => ProfileService::TYPES,
            'usage' => $usage,
        ]);
    }

    public function update(Request $request): RedirectResponse
    {
        $tenant = $this->tenantId();
        $data = $request->validate([
            'fields' => ['array'],
            'fields.*.enabled' => ['nullable', 'boolean'],
            'fields.*.label' => ['required', 'string', 'max:60'],
            'fields.*.type' => ['required', Rule::in(array_keys(ProfileService::TYPES))],
        ]);

        $changes = [];
        foreach ($data['fields'] ?? [] as $key => $row) {
            $field = EditableField::where('tenant_id', $tenant)->where('field', $key)->whereNotIn('field', self::EXCLUDED)->first();
            if (! $field) {
                continue;
            }
            $field->fill(['enabled' => (bool) ($row['enabled'] ?? false), 'label' => $row['label'], 'validation_rule' => $row['type']]);
            if ($field->isDirty()) {
                $changes[$key] = $field->getDirty();
                $field->save();
            }
        }
        if ($changes) {
            AuditLog::record('admin', $this->actor(), 'fields.update', null, $changes, $tenant);
        }

        return back()->with('status', $changes ? 'Champs modifiables enregistrés : effet immédiat dans l\'add-in et le portail.' : 'Aucun changement.');
    }
}