<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\Channel;
use App\Models\Prefix;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\View\View;

class ChannelController extends Controller
{
    public function activate(Request $request): RedirectResponse
    {
        $request->validate(['channel_id' => ['required', 'exists:channels,id']]);
        session(['admin.active_channel_id' => $request->integer('channel_id')]);
        return back();
    }

    public function index(): View
    {
        $channels = Channel::withCount('prefixes')->orderBy('name')->paginate(25);
        return view('admin::settings.channels.index', compact('channels'));
    }

    public function create(): View
    {
        $prefixes = Prefix::orderBy('slug')->get();
        $channel = new Channel();
        return view('admin::settings.channels.form', compact('channel', 'prefixes'));
    }

    public function store(Request $request): RedirectResponse
    {
        $data = $request->validate([
            'name'             => ['required', 'string', 'max:255'],
            'hostname'         => ['required', 'string', 'max:255', 'unique:channels,hostname'],
            'locale'           => ['required', 'string', 'max:10'],
            'taxonomy_slug'    => ['required', 'string', 'max:100'],
            'template'         => ['required', 'string', 'max:100', 'regex:/^[a-z0-9_-]+$/'],
            'meta_title'       => ['nullable', 'string', 'max:255'],
            'meta_description' => ['nullable', 'string'],
            'meta_keywords'    => ['nullable', 'string', 'max:255'],
            'og_image'         => ['nullable', 'string', 'max:255'],
            'prefixes'         => ['nullable', 'array'],
            'prefixes.*'       => ['exists:prefixes,id'],
        ]);

        $channel = Channel::create($data);
        $channel->prefixes()->sync($request->input('prefixes', []));

        return redirect()->route('admin.settings.channels.index')
            ->with('success', "Channel \"{$channel->name}\" created.");
    }

    public function edit(Channel $channel): View
    {
        $prefixes = Prefix::orderBy('slug')->get();
        $channel->load('prefixes');
        return view('admin::settings.channels.form', compact('channel', 'prefixes'));
    }

    public function update(Request $request, Channel $channel): RedirectResponse
    {
        $data = $request->validate([
            'name'             => ['required', 'string', 'max:255'],
            'hostname'         => ['required', 'string', 'max:255', "unique:channels,hostname,{$channel->id}"],
            'locale'           => ['required', 'string', 'max:10'],
            'taxonomy_slug'    => ['required', 'string', 'max:100'],
            'template'         => ['required', 'string', 'max:100', 'regex:/^[a-z0-9_-]+$/'],
            'meta_title'       => ['nullable', 'string', 'max:255'],
            'meta_description' => ['nullable', 'string'],
            'meta_keywords'    => ['nullable', 'string', 'max:255'],
            'og_image'         => ['nullable', 'string', 'max:255'],
            'prefixes'         => ['nullable', 'array'],
            'prefixes.*'       => ['exists:prefixes,id'],
        ]);

        $channel->update($data);
        $channel->prefixes()->sync($request->input('prefixes', []));

        return redirect()->route('admin.settings.channels.index')
            ->with('success', "Channel \"{$channel->name}\" updated.");
    }

    public function destroy(Channel $channel): RedirectResponse
    {
        $name = $channel->name;
        $channel->delete();
        return redirect()->route('admin.settings.channels.index')
            ->with('success', "Channel \"{$name}\" deleted.");
    }
}