<?php

namespace App\Http\Controllers;

use App\Models\Announcement;
use App\Traits\HandlesImageUpload;
use Illuminate\Http\Request;

class AnnouncementController extends Controller
{
    use HandlesImageUpload;

    // Admin list — every announcement, newest first.
    public function index()
    {
        return response()->json([
            'data' => Announcement::with('image')->latest()->get(),
        ]);
    }

    // App side: only the single latest currently-active announcement (or null).
    public function latest()
    {
        $announcement = Announcement::with('image')
            ->active()
            ->orderByDesc('start_date')
            ->latest()
            ->first();

        return response()->json(['data' => $announcement]);
    }

    public function store(Request $request)
    {
        $data = $request->validate([
            'title' => 'required|string|max:255',
            'description' => 'nullable|string',
            'link' => 'nullable|string|max:500',
            'start_date' => 'nullable|date',
            'end_date' => 'nullable|date|after_or_equal:start_date',
            'image_id' => 'nullable|exists:images,id',
            'image' => 'nullable|file|extensions:jpg,jpeg,png,gif,webp,bmp,svg|max:8192',
        ]);

        // An uploaded image file takes precedence over a provided image_id.
        $data['image_id'] = $this->uploadedImageId($request) ?? ($data['image_id'] ?? null);

        $announcement = Announcement::create($data);

        return response()->json([
            'message' => 'Announcement created successfully',
            'data' => $announcement->load('image'),
        ], 201);
    }

    public function show($id)
    {
        return response()->json(
            Announcement::with('image')->findOrFail($id)
        );
    }

    public function update(Request $request, $id)
    {
        $announcement = Announcement::findOrFail($id);

        $data = $request->validate([
            'title' => 'sometimes|string|max:255',
            'description' => 'nullable|string',
            'link' => 'nullable|string|max:500',
            'start_date' => 'nullable|date',
            'end_date' => 'nullable|date|after_or_equal:start_date',
            'image_id' => 'nullable|exists:images,id',
            'image' => 'nullable|file|extensions:jpg,jpeg,png,gif,webp,bmp,svg|max:8192',
        ]);

        // An uploaded image file takes precedence over a provided image_id.
        if (($uploadedImageId = $this->uploadedImageId($request)) !== null) {
            $data['image_id'] = $uploadedImageId;
        }

        $announcement->update($data);

        return response()->json([
            'message' => 'Announcement updated successfully',
            'data' => $announcement->load('image'),
        ]);
    }

    public function destroy($id)
    {
        $announcement = Announcement::findOrFail($id);
        $announcement->delete();

        return response()->json(['message' => 'Announcement deleted successfully']);
    }
}