<?php

namespace App\Http\Controllers\Wiki;

use App\Http\Controllers\Controller;
use App\Models\WikiPage;
use App\Models\WikiSpace;
use Illuminate\Http\Request;
use Inertia\Inertia;
use League\CommonMark\CommonMarkConverter;

class DocumentController extends Controller
{
    private CommonMarkConverter $markdown;

    public function __construct()
    {
        $this->markdown = new CommonMarkConverter([
            'html_input'         => 'strip',
            'allow_unsafe_links' => false,
        ]);
    }

    public function create()
    {
        return Inertia::render('Wiki/PageCreate', [
            'spaces' => WikiSpace::all(),
        ]);
    }

    public function store(Request $request)
    {
        $validated = $request->validate([
            'space_id'  => 'required|exists:wiki_spaces,id',
            'title'     => 'required|string|max:255',
            'content'   => 'required|string',
            'parent_id' => 'nullable|exists:wiki_pages,id',
            'tags'      => 'nullable|array',
        ]);

        $slug = \Str::slug($validated['title']);
        $page = WikiPage::create([
            ...$validated,
            'slug'         => $slug,
            'content_html' => $this->markdown->convert($validated['content'])->getContent(),
            'created_by'   => auth()->id(),
            'updated_by'   => auth()->id(),
        ]);

        return redirect()->route('wiki.pages.show', $page)->with('success', 'Page created.');
    }

    public function show(WikiPage $page)
    {
        return Inertia::render('Wiki/PageShow', [
            'page'     => $page->load('space', 'createdBy', 'updatedBy'),
            'children' => $page->children()->get(),
        ]);
    }

    public function edit(WikiPage $page)
    {
        return Inertia::render('Wiki/PageEdit', [
            'page'   => $page,
            'spaces' => WikiSpace::all(),
        ]);
    }

    public function update(Request $request, WikiPage $page)
    {
        $validated = $request->validate([
            'title'   => 'required|string|max:255',
            'content' => 'required|string',
        ]);

        // Save revision
        $page->revisions()->create([
            'content'    => $page->content,
            'created_by' => auth()->id(),
        ]);

        $page->update([
            ...$validated,
            'content_html' => $this->markdown->convert($validated['content'])->getContent(),
            'updated_by'   => auth()->id(),
        ]);

        return redirect()->route('wiki.pages.show', $page)->with('success', 'Page updated.');
    }

    public function destroy(WikiPage $page)
    {
        $page->delete();
        return redirect()->route('wiki.index')->with('success', 'Page deleted.');
    }
}