import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:voyagehandbook/api/wikimedia.dart';
import 'package:voyagehandbook/util/drawer.dart';
import 'package:voyagehandbook/util/render.dart';
import 'package:voyagehandbook/util/storage.dart';
import 'package:voyagehandbook/util/styles.dart';

/*
        Voyage Handbook - The open-source WikiVoyage reader
        Copyright (C) 2023 Matyáš Caras

        This program is free software: you can redistribute it and/or modify
        it under the terms of the GNU General Public License version 3 as published by
        the Free Software Foundation.

        This program is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.

        You should have received a copy of the GNU General Public License
        along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

/// Renders a single WikiVoyage article
class ArticleView extends StatefulWidget {
  const ArticleView({super.key, required this.pageKey, required this.name});
  final String pageKey;
  final String name;

  @override
  State<ArticleView> createState() => _ArticleViewState();
}

class _ArticleViewState extends State<ArticleView> {
  var _content = <Widget>[];
  @override
  didChangeDependencies() {
    super.didChangeDependencies();

    loadPage();
  }

  @override
  void initState() {
    super.initState();
    addToRecents();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
          actions: (kDebugMode)
              ? [
                  IconButton(
                      onPressed: () => loadPage(),
                      icon: const Icon(Icons.restart_alt))
                ]
              : null),
      drawer: genDrawer(0, context),
      body: Center(
        child: SizedBox(
          height: MediaQuery.of(context).size.height,
          width: MediaQuery.of(context).size.width * 0.9,
          child: SingleChildScrollView(
            physics: const AlwaysScrollableScrollPhysics(),
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: _content,
            ),
          ),
        ),
      ),
    );
  }

  void loadPage() async {
    var renderer = PageRenderer(Theme.of(context).colorScheme,
        MediaQuery.of(context).size.height, MediaQuery.of(context).size.width);
    try {
      _content = [
        SizedBox(
          width: MediaQuery.of(context).size.width * 0.9,
          height: MediaQuery.of(context).size.height,
          child: renderer
              .renderFromPageHTML(await WikiApi.getRawPage(widget.pageKey)),
        )
      ];
    } catch (e) {
      if (kDebugMode) print(e);
      _content = [
        const Text(
          "Error while rendering:",
          style: PageStyles.h1,
        ),
        const SizedBox(
          height: 10,
        ),
        Text(e.toString())
      ];
    }

    setState(() {});
  }

  void addToRecents() {
    StorageAccess.addToRecents(widget.name, widget.pageKey);
  }
}