<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\HeroSlide;
use App\Models\Setting;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;

class HeroSlideController extends Controller
{
    public function index(): View
    {
        $slides = HeroSlide::where('location', 'home')->ordered()->get();
        $mode = Setting::get('hero_mode', 'carousel');

        return view('admin.hero-slides.index', compact('slides', 'mode'));
    }

    public function create(): View
    {
        return view('admin.hero-slides.form', ['slide' => null]);
    }

    public function store(Request $request): RedirectResponse
    {
        $data = $request->validate([
            'title'      => ['required', 'string', 'max:120'],
            'content'    => ['nullable', 'string'],
            'cta_text'   => ['nullable', 'string', 'max:80'],
            'cta_url'    => ['nullable', 'string', 'max:255'],
            'cta2_text'  => ['nullable', 'string', 'max:80'],
            'cta2_url'   => ['nullable', 'string', 'max:255'],
            'is_active'  => ['boolean'],
            'sort_order' => ['integer'],
        ]);

        $data['location'] = 'home';
        $data['is_active'] = $request->boolean('is_active');
        $data['sort_order'] = $data['sort_order'] ?? 0;

        HeroSlide::create($data);

        return redirect()->route('admin.hero-slides.index')->with('success', '轮播项已添加');
    }

    public function edit(HeroSlide $hero_slide): View
    {
        return view('admin.hero-slides.form', ['slide' => $hero_slide]);
    }

    public function update(Request $request, HeroSlide $hero_slide): RedirectResponse
    {
        $data = $request->validate([
            'title'      => ['required', 'string', 'max:120'],
            'content'    => ['nullable', 'string'],
            'cta_text'   => ['nullable', 'string', 'max:80'],
            'cta_url'    => ['nullable', 'string', 'max:255'],
            'cta2_text'  => ['nullable', 'string', 'max:80'],
            'cta2_url'   => ['nullable', 'string', 'max:255'],
            'is_active'  => ['boolean'],
            'sort_order' => ['integer'],
        ]);

        $data['is_active'] = $request->boolean('is_active');
        $data['sort_order'] = $data['sort_order'] ?? $hero_slide->sort_order;

        $hero_slide->update($data);

        return redirect()->route('admin.hero-slides.index')->with('success', '轮播项已更新');
    }

    public function destroy(HeroSlide $hero_slide): RedirectResponse
    {
        $hero_slide->delete();

        return redirect()->route('admin.hero-slides.index')->with('success', '轮播项已删除');
    }

    /**
     * 上移 / 下移排序。
     */
    public function move(Request $request, HeroSlide $hero_slide): RedirectResponse
    {
        $direction = $request->input('direction');

        if ($direction === 'up') {
            $sibling = HeroSlide::where('location', 'home')->ordered()
                ->where('sort_order', '<', $hero_slide->sort_order)
                ->orderByDesc('sort_order')
                ->first();
            if ($sibling) {
                [$hero_slide->sort_order, $sibling->sort_order] = [$sibling->sort_order, $hero_slide->sort_order];
                $hero_slide->save();
                $sibling->save();
            }
        } elseif ($direction === 'down') {
            $sibling = HeroSlide::where('location', 'home')->ordered()
                ->where('sort_order', '>', $hero_slide->sort_order)
                ->first();
            if ($sibling) {
                [$hero_slide->sort_order, $sibling->sort_order] = [$sibling->sort_order, $hero_slide->sort_order];
                $hero_slide->save();
                $sibling->save();
            }
        }

        return redirect()->route('admin.hero-slides.index');
    }

    /**
     * 一键启用 / 停用。
     */
    public function toggle(HeroSlide $hero_slide): RedirectResponse
    {
        $hero_slide->update(['is_active' => ! $hero_slide->is_active]);

        return redirect()->route('admin.hero-slides.index');
    }

    /**
     * 全局 Hero 显示模式：carousel（轮播）/ single（独立单图）。
     */
    public function setMode(Request $request): RedirectResponse
    {
        $data = $request->validate([
            'hero_mode' => ['required', 'in:carousel,single'],
        ]);

        Setting::set('hero_mode', $data['hero_mode'], 'appearance');

        return redirect()->route('admin.hero-slides.index')->with('success', 'Hero 显示模式已更新');
    }
}