<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Http\Resources\ProjectResource;
use App\Models\Project;
use App\Models\Translation;

class ProjectController extends Controller
{
    public function index()
    {
        $projects = Project::with('skills')->ordered()->get();

        return ProjectResource::collection($projects)
            ->additional(['meta' => ['lang' => app()->getLocale()]]);
    }

    public function show(string $slug)
    {
        $project = Project::with('skills')->where('slug', $slug)->first();

        if (!$project) {
            return response()->json([
                'error' => [
                    'code' => 'PROJECT_NOT_FOUND',
                    'message' => 'Project not found',
                ],
            ], 404);
        }

        $lang = app()->getLocale();

        // Get all projects in order for navigation
        $allProjects = Project::ordered()->get(['id', 'slug', 'title_key']);
        $currentIndex = $allProjects->search(fn ($p) => $p->slug === $slug);

        $prev = $currentIndex > 0 ? $allProjects[$currentIndex - 1] : null;
        $next = $currentIndex < $allProjects->count() - 1 ? $allProjects[$currentIndex + 1] : null;

        return (new ProjectResource($project))
            ->additional([
                'meta' => ['lang' => $lang],
                'navigation' => [
                    'prev' => $prev ? [
                        'slug' => $prev->slug,
                        'title' => Translation::getTranslation($prev->title_key, $lang),
                    ] : null,
                    'next' => $next ? [
                        'slug' => $next->slug,
                        'title' => Translation::getTranslation($next->title_key, $lang),
                    ] : null,
                ],
            ]);
    }
}