<?php

namespace App\Http\Controllers;

use App\Models\Followee;
use App\Models\Notification;
use App\Models\User;
use App\Settings\SettingsRegistry;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Gate;
use Inertia\Inertia;

class UserController extends Controller
{
    public function follow(User $user): JsonResponse
    {
        abort_if($user->id === auth()->id(), 403);

        $existing = Followee::where('user_id', auth()->id())
            ->where('followee_id', $user->id)
            ->first();

        if ($existing) {
            $existing->delete();
            return response()->json(['status' => 'none']);
        }

        $canView = Gate::allows('viewProfileData', $user);

        Followee::create([
            'user_id'     => auth()->id(),
            'followee_id' => $user->id,
            'verified'    => $canView,
        ]);

        Notification::create([
            'user_id'        => $user->id,
            'title'          => $canView ? 'New follower' : 'Follow request',
            'body'           => $canView
                ? auth()->user()->name . ' is now following you.'
                : auth()->user()->name . ' wants to follow you.',
            'is_achievement' => false,
            'url'            => $canView ? '/u/' . auth()->user()->name : '/follow-requests',
        ]);

        return response()->json(['status' => $canView ? 'following' : 'requested']);
    }

    public function approveRequest(User $follower): JsonResponse
    {
        $followee = Followee::where('user_id', $follower->id)
            ->where('followee_id', auth()->id())
            ->pending()
            ->firstOrFail();

        $followee->update(['verified' => true]);

        Notification::create([
            'user_id'        => $follower->id,
            'title'          => 'Follow request accepted',
            'body'           => auth()->user()->name . ' accepted your follow request.',
            'is_achievement' => false,
            'url'            => '/u/' . auth()->user()->name,
        ]);

        return response()->json(['approved' => true]);
    }

    public function denyRequest(User $follower): JsonResponse
    {
        Followee::where('user_id', $follower->id)
            ->where('followee_id', auth()->id())
            ->pending()
            ->delete();

        return response()->json(['denied' => true]);
    }

    public function settings(?string $category = null){
        $allowedTabs = ['general', 'followers'];
        $user    = auth()->user();
        $current = array_merge(SettingsRegistry::defaults(), $user->settings ?? []);
        $fields  = array_map(fn($field) => array_merge($field, [
            'value' => $current[$field['key']] ?? $field['default'],
        ]), SettingsRegistry::schema());

        return Inertia::render('UserSettings', [
            'fields' => $fields,
            'categories' => SettingsRegistry::categories(),
            'defaultTab' => in_array($category, $allowedTabs, true) ? $category : 'general',
        ]);
    }
}