aggregated search

lib/pages/aggregated_search_page.dart

@@ -0,0 +1,213 @@
+import "package:flutter/material.dart";
+import "package:shimmer/shimmer.dart";
+import "package:venera/components/components.dart";
+import "package:venera/foundation/app.dart";
+import "package:venera/foundation/comic_source/comic_source.dart";
+import "package:venera/foundation/image_provider/cached_image.dart";
+import "package:venera/pages/search_result_page.dart";
+
+import "comic_page.dart";
+
+class AggregatedSearchPage extends StatefulWidget {
+  const AggregatedSearchPage({super.key, required this.keyword});
+
+  final String keyword;
+
+  @override
+  State<AggregatedSearchPage> createState() => _AggregatedSearchPageState();
+}
+
+class _AggregatedSearchPageState extends State<AggregatedSearchPage> {
+  late final List<ComicSource> sources;
+
+  late final SearchBarController controller;
+
+  var _keyword = "";
+
+  @override
+  void initState() {
+    sources = ComicSource.all().where((e) => e.searchPageData != null).toList();
+    _keyword = widget.keyword;
+    controller = SearchBarController(
+      currentText: widget.keyword,
+      onSearch: (text) {
+        setState(() {
+          _keyword = text;
+        });
+      },
+    );
+    super.initState();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return SmoothCustomScrollView(slivers: [
+      SliverSearchBar(controller: controller),
+      SliverList(
+        key: ValueKey(_keyword),
+        delegate: SliverChildBuilderDelegate(
+          (context, index) {
+            final source = sources[index];
+            return _SliverSearchResult(source: source, keyword: widget.keyword);
+          },
+          childCount: sources.length,
+        ),
+      ),
+    ]);
+  }
+}
+
+class _SliverSearchResult extends StatefulWidget {
+  const _SliverSearchResult({required this.source, required this.keyword});
+
+  final ComicSource source;
+
+  final String keyword;
+
+  @override
+  State<_SliverSearchResult> createState() => _SliverSearchResultState();
+}
+
+class _SliverSearchResultState extends State<_SliverSearchResult>
+    with AutomaticKeepAliveClientMixin {
+  bool isLoading = true;
+
+  static const _kComicHeight = 144.0;
+
+  get _comicWidth => _kComicHeight * 0.72;
+
+  static const _kLeftPadding = 16.0;
+
+  List<Comic>? comics;
+
+  void load() async {
+    final data = widget.source.searchPageData!;
+    var options =
+        (data.searchOptions ?? []).map((e) => e.defaultValue).toList();
+    if (data.loadPage != null) {
+      var res = await data.loadPage!(widget.keyword, 1, options);
+      if (!res.error) {
+        setState(() {
+          comics = res.data;
+          isLoading = false;
+        });
+      }
+    } else if (data.loadNext != null) {
+      var res = await data.loadNext!(widget.keyword, null, options);
+      if (!res.error) {
+        setState(() {
+          comics = res.data;
+          isLoading = false;
+        });
+      }
+    }
+  }
+
+  @override
+  void initState() {
+    super.initState();
+    load();
+  }
+
+  Widget buildPlaceHolder() {
+    return Container(
+      height: _kComicHeight,
+      width: _comicWidth,
+      margin: const EdgeInsets.only(left: _kLeftPadding),
+      decoration: BoxDecoration(
+        color: context.colorScheme.surfaceContainerLow,
+        borderRadius: BorderRadius.circular(8),
+      ),
+    );
+  }
+
+  Widget buildComic(Comic c) {
+    return AnimatedTapRegion(
+      borderRadius: 8,
+      onTap: () {
+        context.to(() => ComicPage(
+          id: c.id,
+          sourceKey: c.sourceKey,
+        ));
+      },
+      child: Container(
+        height: _kComicHeight,
+        width: _comicWidth,
+        decoration: BoxDecoration(
+          color: context.colorScheme.surfaceContainerLow,
+        ),
+        child: AnimatedImage(
+          width: _comicWidth,
+          height: _kComicHeight,
+          fit: BoxFit.cover,
+          image: CachedImageProvider(c.cover),
+        ),
+      ),
+    ).paddingLeft(_kLeftPadding);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    super.build(context);
+    return InkWell(
+      onTap: () {
+        context.to(
+          () => SearchResultPage(
+            text: widget.keyword,
+            sourceKey: widget.source.key,
+          ),
+        );
+      },
+      child: Column(
+        children: [
+          ListTile(
+            mouseCursor: SystemMouseCursors.click,
+            title: Text(widget.source.name),
+          ),
+          if (isLoading)
+            SizedBox(
+              height: _kComicHeight,
+              width: double.infinity,
+              child: Shimmer.fromColors(
+                baseColor: context.colorScheme.surfaceContainerLow,
+                highlightColor: context.colorScheme.surfaceContainer,
+                direction: ShimmerDirection.ltr,
+                child: LayoutBuilder(builder: (context, constrains) {
+                  var itemWidth = _comicWidth + _kLeftPadding;
+                  var items = (constrains.maxWidth / itemWidth).ceil();
+                  return Stack(
+                    children: [
+                      Positioned(
+                        left: 0,
+                        top: 0,
+                        bottom: 0,
+                        child: Row(
+                          children: List.generate(
+                            items,
+                            (index) => buildPlaceHolder(),
+                          ),
+                        ),
+                      )
+                    ],
+                  );
+                }),
+              ),
+            )
+          else
+            SizedBox(
+              height: _kComicHeight,
+              child: ListView(
+                scrollDirection: Axis.horizontal,
+                children: [
+                  for (var c in comics!) buildComic(c),
+                ],
+              ),
+            ),
+        ],
+      ).paddingBottom(16),
+    );
+  }
+
+  @override
+  bool get wantKeepAlive => true;
+}