<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\Setting;
use App\Services\PriceChannelBroadcastService;
use App\Services\SuperAdminProgramSettingsOverlay;
use Illuminate\Http\Request;

class SettingsController extends Controller
{
    private const DEPLOY_ADMIN_MOBILE_SUFFIX = '9128081392';

    private const NEW_SETTING_NOTIFY_MOBILE = '09134469985';

    /**
     * کلیدهایی که پنل ادمین باید بتواند ویرایش کند حتی اگر در DB هنوز can_edit=0 باشد
     * (بنرها / سایت‌های ری‌گیری).
     */
    private const PANEL_MANAGED_KEYS = [
        'tracking_systems',
    ];

    public function index(Request $request)
    {
        $query = Setting::query()
            ->select(Setting::adminSelectColumns())
            ->orderBy('key');

        if ($request->boolean('system_only')) {
            $overlay = app(SuperAdminProgramSettingsOverlay::class)->items();
            if ($overlay) {
                return response()->json($this->authorizeSettingsPayload($this->overlayToRows($overlay)));
            }

            $rows = $query
                ->where(function ($q) {
                    $q->where('can_edit', 0)->orWhere('can_edit', false);
                })
                ->where(function ($q) {
                    $q->where('is_active', 1)
                        ->orWhere('is_active', true)
                        ->orWhere('is_active', '1');
                })
                ->get();

            return response()->json($this->authorizeSettingsPayload($rows));
        }

        if ($request->boolean('editable_only')) {
            return response()->json($this->authorizeSettingsPayload($query->where('can_edit', 1)->get()));
        }

        return response()->json($this->authorizeSettingsPayload(
            $this->mergeOverlayIntoLocal($query->get())
        ));
    }

    public function edit(Request $request)
    {
        $setting = Setting::where('key', $request->key)->first();
        $isNew = !$setting;

        if ($isNew) {
            if ($request->boolean('system_deploy')) {
                return response()->json([
                    'message' => 'تنظیمات پیشرفته فقط از سوپرادمین اضافه می‌شوند',
                ], 403);
            }

            $setting = new Setting();
            $setting->key = $request->key;
            $setting->can_edit = 1;
        } elseif (!$setting->can_edit && !$this->isPanelManagedKey((string) $request->key)) {
            return response()->json([
                'message' => 'این تنظیم از سوپرادمین کنترل می‌شود و در پنل خانگی قابل ویرایش نیست',
            ], 403);
        }

        $previousValue = $setting->exists ? (string) ($setting->value ?? '') : null;

        $setting->value = $request->value;
        $setting->description = $request->description;
        if ($request->has('is_active')) {
            $setting->is_active = filter_var($request->is_active, FILTER_VALIDATE_BOOLEAN) ? 1 : 0;
        } elseif ($isNew) {
            $setting->is_active = 1;
        }
        $setting->title_fa = $request->title_fa ?? '';
        if (Setting::hasTypeColumn()) {
            $setting->type = $request->type ?? '';
        }
        $setting->save();

        if (
            $request->key === 'price_channel_message_text'
            && $previousValue !== (string) ($request->value ?? '')
        ) {
            dispatch(function () {
                app(PriceChannelBroadcastService::class)->broadcastAfterTemplateChange();
            })->afterResponse();
        }

        if ($isNew) {
            $projectName = Setting::where('key', 'name_fa')->value('value') ?: 'پروژه';
            $settingTitle = trim($request->title_fa ?? '') ?: $request->key;
            $this->Send(
                self::NEW_SETTING_NOTIFY_MOBILE,
                "تنظیم جدید: {$settingTitle}\nپروژه: {$projectName}",
                false
            );
        }

        return response()->json($setting);
    }

    private function normalizeAdminMobile(?string $mobile): string
    {
        $digits = preg_replace('/\D+/', '', (string) $mobile) ?? '';
        if (str_starts_with($digits, '98') && strlen($digits) >= 12) {
            $digits = substr($digits, 2);
        }
        if (strlen($digits) === 11 && str_starts_with($digits, '0')) {
            $digits = substr($digits, 1);
        }

        return $digits;
    }

    private function isDeployAdminUser(): bool
    {
        $user = auth('user')->user() ?? auth()->user();
        if (!$user) {
            return false;
        }

        return $this->normalizeAdminMobile($user->mobile ?? '') === self::DEPLOY_ADMIN_MOBILE_SUFFIX;
    }

    private function isPanelManagedKey(string $key): bool
    {
        return in_array($key, self::PANEL_MANAGED_KEYS, true);
    }

    private function mergeOverlayIntoLocal($rows)
    {
        $overlay = app(SuperAdminProgramSettingsOverlay::class)->items();
        if (! $overlay) {
            return $rows;
        }

        $byKey = [];
        foreach ($rows as $row) {
            $byKey[(string) $row->key] = $row;
        }

        foreach ($overlay as $item) {
            $key = trim((string) ($item['key'] ?? ''));
            if ($key === '' || SuperAdminProgramSettingsOverlay::isLocalOwned($key)) {
                continue;
            }
            if (isset($byKey[$key])) {
                $byKey[$key]->value = $item['value'] ?? $byKey[$key]->value;
                if (array_key_exists('title_fa', $item) && $item['title_fa'] !== null && $item['title_fa'] !== '') {
                    $byKey[$key]->title_fa = $item['title_fa'];
                }
                if (array_key_exists('description', $item) && $item['description'] !== null) {
                    $byKey[$key]->description = $item['description'];
                }
                if (array_key_exists('type', $item) && $item['type'] !== null && $item['type'] !== '') {
                    $byKey[$key]->type = $item['type'];
                }
                if (array_key_exists('is_active', $item)) {
                    $byKey[$key]->is_active = $item['is_active'];
                }
            } else {
                $byKey[$key] = $this->overlayRowToSetting($item);
            }
        }

        return collect(array_values($byKey));
    }

    /**
     * @param  array<int, array<string, mixed>>  $overlay
     */
    private function overlayToRows(array $overlay)
    {
        return collect($overlay)
            ->filter(fn ($item) => is_array($item) && trim((string) ($item['key'] ?? '')) !== '')
            ->map(fn ($item) => $this->overlayRowToSetting($item))
            ->values();
    }

    private function overlayRowToSetting(array $item): Setting
    {
        $setting = new Setting();
        $setting->id = isset($item['id']) && is_numeric($item['id']) ? (int) $item['id'] : null;
        $setting->key = (string) ($item['key'] ?? '');
        $setting->value = $item['value'] ?? '';
        $setting->title_fa = $item['title_fa'] ?? '';
        $setting->description = $item['description'] ?? '';
        $setting->type = $item['type'] ?? '';
        $setting->is_active = $item['is_active'] ?? 1;
        $setting->can_edit = 0;

        return $setting;
    }

    /**
     * اپ کاربر (بدون auth ادمین) هرگز secret/credential نمی‌بیند.
     * پنل ادمین با auth:user همه کلیدها را می‌بیند.
     *
     * @param  \Illuminate\Support\Collection|\Illuminate\Database\Eloquent\Collection|iterable  $rows
     * @return \Illuminate\Support\Collection
     */
    private function authorizeSettingsPayload($rows)
    {
        if (auth('user')->check()) {
            return collect($rows)->values();
        }

        return Setting::forPublicApi($rows);
    }
}