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,
        context);
    if (kDebugMode) {
      _content = [
        SizedBox(
          width: MediaQuery.of(context).size.width * 0.9,
          height: MediaQuery.of(context).size.height,
          child: renderer
              .renderFromPageHTML(await WikiApi.getRawPage(widget.pageKey)),
        )
      ];
    } else {
      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) {
        _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);
    if (kDebugMode) {
      print("Added ${widget.name} to recent");
    }
  }
}