app/lib/pages/home/classify/material_page.dart

/*
 * ====================================================
 * package   : pages.home.classify
 * author    : Created by nansi.
 * time      : 2019/5/22  9:43 AM 
 * remark    : 
 * ====================================================
 */

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:recook/constants/api.dart';
import 'package:recook/manager/http_manager.dart';
import 'package:recook/manager/user_manager.dart';
import 'package:recook/models/base_model.dart';
import 'package:recook/models/material_list_model.dart';
import 'package:recook/pages/business/publish_business_district_page.dart';
import 'package:recook/pages/home/classify/mvp/goods_detail_model_impl.dart';
import 'package:recook/pages/home/items/item_publish_material.dart';
import 'package:recook/third_party/wechat/wechat_utils.dart';
import 'package:recook/utils/image_utils.dart';
import 'package:recook/constants/header.dart';
import 'package:recook/widgets/custom_image_button.dart';
import 'package:recook/widgets/pic_swiper.dart';
import 'package:recook/widgets/toast.dart';

class MaterialPage extends StatefulWidget {
  final int goodsID;
  const MaterialPage({Key key, this.goodsID}) : super(key: key);

  @override
  State<StatefulWidget> createState() {
    return _MaterialPageState();
  }
}

class _MaterialPageState extends State<MaterialPage> with AutomaticKeepAliveClientMixin{
  MaterialListModel _model;

  @override
  void initState() {
    print("initState ---------- Good");
    super.initState();
    int userID = 0;
    if (UserManager.instance.haveLogin) {
      userID = UserManager.instance.user.info.id;   
    }
    GoodsDetailModelImpl.
      getDetailMoments(userID ,widget.goodsID).
      then((MaterialListModel model){
        if (model.code != HttpStatus.SUCCESS) {
          Toast.showError(model.msg);
          return;
        }
        _model = model;
        setState(() {});
      });
  }
  
  @override
  Widget build(BuildContext context) {
    print("build ---------- Good");
    print('$_model');
    super.build(context);
    double topPadding = (DeviceInfo.statusBarHeight + DeviceInfo.appBarHeight);
    return MediaQuery.removePadding(
      context: context,
      removeTop: true,
      child: Container(
        color: AppColor.frenchColor,
        padding: EdgeInsets.only(top: topPadding),
        child: Stack(
          alignment: Alignment.center,
          // children: _materialDetail(),
          children: [
            ListView.builder(
              itemCount: _model==null || _model.data==null? 0:_model.data.length+1,
              physics: BouncingScrollPhysics(),
              itemBuilder: (context, index) {
                if(index == _model.data.length){
                  return Container(width: MediaQuery.of(context).size.width, height: 60, color: Colors.green.withAlpha(0),);
                }
                return _itemWidget(_model.data[index],);
              }),
            !UserManager.instance.haveLogin?Container():
            Positioned(
              bottom: 10,
              child: CustomImageButton(
                title: "我要发布",
                padding: EdgeInsets.symmetric(vertical: 8, horizontal: 25),
                color: Colors.white,
                fontSize: ScreenAdapterUtils.setSp(15),
                backgroundColor: AppColor.themeColor,
                borderRadius: BorderRadius.all(Radius.circular(20)),
                onPressed: () {
                  AppRouter.model(
                    context, 
                    RouteName.BUSINESS_DISTRICT_PUBLISH_PAGE, 
                    arguments: PublishBusinessDistrictPage.setArguments(goodsId: widget.goodsID));
                },
              ),
            )
          ]
        ),
      ),
    );
  }

_itemWidget(MaterialModel model){
  return Container(
      child: PublishMaterialItem(
        publishMaterialListener: (Goods goods){
          WeChatUtils.shareGoodsForMiniProgram(goodsId: goods.id, thumbnail: Api.getImgUrl(goods.mainPhotoURL), title: goods.name);
        },
        downloadListener: (){
          GSDialog.of(context).showLoadingDialog(context, "保存图片中...");
          List<String> urls = model.photos.map((f){
            return Api.getResizeImgUrl(f.url, 300);
          }).toList();
          ImageUtils.saveNetworkImagesToPhoto(
            urls, 
            (index){
              DPrint.printf("保存好了---$index");
            },
            (success){
              GSDialog.of(context).dismiss(context);
              success ? GSDialog.of(context).showSuccess(context, "保存完成!") : GSDialog.of(context).showError(context, "保存失败...");
              if (!TextUtils.isEmpty(model.text)) {
                ClipboardData data = new ClipboardData(text:model.text);
                Clipboard.setData(data);
                Toast.showCustomSuccess('文字内容已经保存到剪贴板');
                // Toast.showSuccess('文字内容已经保存到剪贴板');
              }
            });
        },
        copyListener: (){
          if (!TextUtils.isEmpty(model.text)) {
            ClipboardData data = new ClipboardData(text:model.text);
            Clipboard.setData(data);
            Toast.showCustomSuccess('文字内容已经保存到剪贴板');
            // showSuccess('文字内容已经保存到剪贴板');
          }
        },
        focusListener: (){
          DPrint.printf("关注或者取消关注!");
          _attention(model);
        },
        picListener: (index){
          List<PicSwiperItem> picSwiperItem = [];
          for (Photos photo in model.photos) {
            picSwiperItem.add(PicSwiperItem(Api.getImgUrl(photo.url)));
          }
          AppRouter.fade(
                context, 
                RouteName.PIC_SWIPER, 
                arguments: PicSwiper.setArguments(
                  index: index, 
                  pics: picSwiperItem,
                ),
              );
        },
        model: model,
      ),
    );
}


List<Widget> _materialDetail(){
  if (_model == null) return [];

  List<Widget> children = _model.data.map((MaterialModel model){
    return Container(
      child: PublishMaterialItem(
        publishMaterialListener: (Goods goods){
          WeChatUtils.shareGoodsForMiniProgram(goodsId: goods.id, thumbnail: Api.getImgUrl(goods.mainPhotoURL), title: goods.name);
        },
        downloadListener: (){
          GSDialog.of(context).showLoadingDialog(context, "保存图片中...");
          List<String> urls = model.photos.map((f){
            return Api.getResizeImgUrl(f.url, 300);
          }).toList();
          ImageUtils.saveNetworkImagesToPhoto(
            urls, 
            (index){
              DPrint.printf("保存好了---$index");
            },
            (success){
              GSDialog.of(context).dismiss(context);
              success ? GSDialog.of(context).showSuccess(context, "保存完成") : GSDialog.of(context).showError(context, "保存失败");
              if (!TextUtils.isEmpty(model.text)) {
                ClipboardData data = new ClipboardData(text:model.text);
                Clipboard.setData(data);
                Toast.showCustomSuccess('文字内容已经保存到剪贴板');
                // Toast.showSuccess('文字内容已经保存到剪贴板');
              }
            });
        },
        copyListener: (){
          if (!TextUtils.isEmpty(model.text)) {
            ClipboardData data = new ClipboardData(text:model.text);
            Clipboard.setData(data);
            Toast.showCustomSuccess('文字内容已经保存到剪贴板');
            // showSuccess('文字内容已经保存到剪贴板');
          }
        },
        focusListener: (){
          DPrint.printf("关注或者取消关注!");
          _attention(model);
        },
        picListener: (index){
          List<PicSwiperItem> picSwiperItem = [];
          for (Photos photo in model.photos) {
            picSwiperItem.add(PicSwiperItem(Api.getImgUrl(photo.url)));
          }
          AppRouter.fade(
                context, 
                RouteName.PIC_SWIPER, 
                arguments: PicSwiper.setArguments(
                  index: index, 
                  pics: picSwiperItem,
                ),
              );
        },
        model: model,
      ),
    );
  }).toList();
  
  if (UserManager.instance.haveLogin) {
    children.add(
    Container(
      child:Positioned(
              bottom: 40,
              child: CustomImageButton(
                title: "我要发布",
                padding: EdgeInsets.symmetric(vertical: 8, horizontal: 25),
                color: Colors.white,
                fontSize: ScreenAdapterUtils.setSp(15),
                backgroundColor: Color(0xFFFF2810),
                borderRadius: BorderRadius.all(Radius.circular(20)),
                onPressed: () {
                  AppRouter.model(
                    context, 
                    RouteName.BUSINESS_DISTRICT_PUBLISH_PAGE, 
                    arguments: PublishBusinessDistrictPage.setArguments(goodsId: widget.goodsID));
                },
              ),
            ),)
    );
  }
  return children;
}

///关注
_attention(MaterialModel model) async {
  if (model.isAttention) {//取消关注
    HttpResultModel<BaseModel> resultModel = await GoodsDetailModelImpl.goodsAttentionCancel(
      UserManager.instance.user.info.id, model.userId);
    if (!resultModel.result) {
      Toast.showInfo(resultModel.msg);
      return;
    }
    setState(() {model.isAttention = false;});
  }else{//关注
    HttpResultModel<BaseModel> resultModel = await GoodsDetailModelImpl.goodsAttentionCreate(
      UserManager.instance.user.info.id, model.userId);
    if (!resultModel.result) {
      Toast.showInfo(resultModel.msg);
      return;
    }
    setState(() {model.isAttention = true;});
  }
}

  @override
  bool get wantKeepAlive => true;
}