From 35104cdbc87a5bb0b383c5f30d22d1ebcdb06a73 Mon Sep 17 00:00:00 2001
From: robonen <robonenandrew@gmail.com>
Date: Sun, 15 Jun 2025 15:40:54 +0700
Subject: [PATCH] feat(blog): implement BlogHeader and BlogList components, add
 post fetching and filtering logic

---
 src/pages/blog.vue                          |  16 ++-
 src/shared/composables/useBodyScrollLock.ts |  35 ++++++
 src/widgets/Blog/context.ts                 | 100 +++++++++++++++++
 src/widgets/Blog/index.ts                   |   3 +
 src/widgets/Blog/ui/BlogHeader.vue          |  92 +++++++++++++++
 src/widgets/Blog/ui/BlogList.vue            |  62 ++++++++++
 src/widgets/Blog/ui/BlogModal.vue           | 118 ++++++++++++++++++++
 7 files changed, 425 insertions(+), 1 deletion(-)
 create mode 100644 src/shared/composables/useBodyScrollLock.ts
 create mode 100644 src/widgets/Blog/context.ts
 create mode 100644 src/widgets/Blog/index.ts
 create mode 100644 src/widgets/Blog/ui/BlogHeader.vue
 create mode 100644 src/widgets/Blog/ui/BlogList.vue
 create mode 100644 src/widgets/Blog/ui/BlogModal.vue

diff --git a/src/pages/blog.vue b/src/pages/blog.vue
index ffaefa3..766bdb3 100644
--- a/src/pages/blog.vue
+++ b/src/pages/blog.vue
@@ -1,3 +1,17 @@
+<script setup lang="ts">
+import { BlogHeader, useProvidingPosts } from '@/widgets/Blog';
+import { BlogList} from '@/widgets/Blog';
+
+useProvidingPosts(() => fetch('/posts.json').then((response) => {
+  if (!response.ok) {
+    throw new Error('Failed to fetch posts');
+  }
+
+  return response.json();
+}));
+</script>
+
 <template>
-  Blog
+  <BlogHeader />
+  <BlogList />
 </template>
diff --git a/src/shared/composables/useBodyScrollLock.ts b/src/shared/composables/useBodyScrollLock.ts
new file mode 100644
index 0000000..fbb3926
--- /dev/null
+++ b/src/shared/composables/useBodyScrollLock.ts
@@ -0,0 +1,35 @@
+import { type MaybeRefOrGetter, onScopeDispose, toValue, watchEffect } from 'vue';
+
+export function useBodyScrollLock(isLocked: MaybeRefOrGetter<boolean>) {
+  let originalOverflow: string | null = null;
+
+  const lock = () => {
+    if (originalOverflow === null)
+      originalOverflow = document.body.style.overflow || '';
+
+    document.body.style.overflow = 'hidden';
+  };
+
+  const unlock = () => {
+    if (originalOverflow !== null) {
+      document.body.style.overflow = originalOverflow;
+      originalOverflow = null;
+    }
+  };
+
+  watchEffect(() => {
+    if (toValue(isLocked))
+      lock();
+    else
+      unlock();
+  });
+
+  onScopeDispose(() => {
+    unlock();
+  });
+
+  return {
+    lock,
+    unlock,
+  };
+}
diff --git a/src/widgets/Blog/context.ts b/src/widgets/Blog/context.ts
new file mode 100644
index 0000000..483fe77
--- /dev/null
+++ b/src/widgets/Blog/context.ts
@@ -0,0 +1,100 @@
+import type { PostComment } from '@/entities/Comment';
+import type { Post } from '@/entities/Post';
+import { useInjectionStore } from '@robonen/vue';
+import { computed, reactive, ref, shallowRef } from 'vue';
+import { kmpSearch } from '@/shared/utils';
+
+interface PostItem extends Post {
+  comments: PostComment[];
+}
+
+export const {
+  useProvidingState: useProvidingPosts,
+  useInjectedState: useInjectedPosts,
+} = useInjectionStore((loader: () => Promise<any>) => {
+  const posts = shallowRef<PostItem[]>([]);
+  const loading = ref(false);
+
+  const selectedPost = shallowRef<PostItem | null>(null);
+
+  const filters = reactive({
+    search: '',
+    tags: new Set<string>(),
+  });
+
+  const filtersActive = computed(() => {
+    return filters.search || filters.tags.size > 0;
+  });
+
+  const filteredPosts = computed(() => {
+    const filteredByTags = posts.value.filter((post) => {
+      if (filters.tags.size > 0)
+        return Array.from(filters.tags).every(tag => post.tags.includes(tag));
+
+      return true;
+    });
+
+    if (!filters.search)
+      return filteredByTags;
+
+    return filteredByTags.filter(post => kmpSearch(post.title, filters.search));
+  });
+
+  const availableTags = computed(() => {
+    const tagsSet = new Set<string>();
+
+    posts.value.forEach((post) => {
+      post.tags.forEach(tag => tagsSet.add(tag));
+    });
+
+    return Array.from(tagsSet);
+  });
+
+  const loadPosts = async () => {
+    loading.value = true;
+
+    try {
+      const data = await loader();
+      posts.value = data!.data as PostItem[];
+    }
+    catch (error) {
+      console.error('Failed to load posts:', error);
+    }
+    finally {
+      loading.value = false;
+    }
+  };
+
+  function toggleTag(tag: string) {
+    if (filters.tags.has(tag))
+      filters.tags.delete(tag);
+    else
+      filters.tags.add(tag);
+  }
+
+  function isTagActive(tag: string) {
+    return filters.tags.has(tag);
+  }
+
+  function resetFilters() {
+    filters.search = '';
+    filters.tags.clear();
+  }
+
+  // Initial load
+  loadPosts();
+
+  return {
+    posts,
+    loading,
+    selectedPost,
+    filters,
+    filtersActive,
+    filteredPosts,
+    availableTags,
+    loadPosts,
+    toggleTag,
+    isTagActive,
+    resetFilters,
+  };
+});
diff --git a/src/widgets/Blog/index.ts b/src/widgets/Blog/index.ts
new file mode 100644
index 0000000..a1ed493
--- /dev/null
+++ b/src/widgets/Blog/index.ts
@@ -0,0 +1,3 @@
+export * from './context';
+export { default as BlogHeader } from './ui/BlogHeader.vue';
+export { default as BlogList } from './ui/BlogList.vue';
\ No newline at end of file
diff --git a/src/widgets/Blog/ui/BlogHeader.vue b/src/widgets/Blog/ui/BlogHeader.vue
new file mode 100644
index 0000000..23940bb
--- /dev/null
+++ b/src/widgets/Blog/ui/BlogHeader.vue
@@ -0,0 +1,92 @@
+<script setup lang="ts">
+import { ref } from 'vue';
+import { ArrowIcon, CheckIcon, MagnifyingGlassIcon, PlusIcon } from '@/shared/icons';
+import { Badge } from '@/shared/ui/Badge';
+import { Button } from '@/shared/ui/Button';
+import { Input } from '@/shared/ui/Input';
+import { useInjectedPosts } from '../context';
+
+const filtersVisible = ref(false);
+const { filters, filtersActive, availableTags, toggleTag, isTagActive, resetFilters } = useInjectedPosts()!;
+</script>
+
+<template>
+  <div class="bg-surface text-surface-foreground py-6">
+    <div class="mx-auto px-2 container" :class="$style.container">
+      <h1 class="text-3xl font-bold text-gray-900" :class="$style.title">
+        Блог
+      </h1>
+      <div class="relative" :class="$style.search">
+        <Input v-model="filters.search" name="search" placeholder="Поиск" class="pl-8" />
+        <span class="absolute start-0 inset-y-0 flex items-center justify-center px-2" aria-hidden="true">
+          <MagnifyingGlassIcon class="size-4 text-gray-400" />
+        </span>
+      </div>
+      <div class="flex justify-end gap-2" :class="$style.filters">
+        <Button
+          v-if="filtersActive"
+          variant="ghost"
+          class="flex items-center gap-2 text-sm text-primary-dark"
+          @click="resetFilters"
+        >
+          Очистить
+        </Button>
+        <Button
+          variant="ghost"
+          class="flex items-center gap-2 text-sm text-foreground-muted"
+          @click="filtersVisible = !filtersVisible"
+        >
+          {{ filtersVisible ? 'Скрыть фильтры' : 'Фильтры' }}
+          <ArrowIcon class="size-4 transition-transform" :class="{ 'rotate-180': filtersVisible }" />
+        </Button>
+      </div>
+    </div>
+  </div>
+  <div v-if="filtersVisible" class="bg-surface text-surface-foreground pb-6">
+    <div class="mx-auto px-2 container flex flex-wrap gap-2">
+      <Button
+        v-for="tag in availableTags"
+        :key="tag"
+        variant="ghost"
+        @click="toggleTag(tag)"
+      >
+        <Badge :variant="isTagActive(tag) ? 'primary' : 'secondary'" class="flex items-center gap-2">
+          {{ tag }}
+          <PlusIcon v-if="!isTagActive(tag)" class="size-4" />
+          <CheckIcon v-else class="size-4" />
+        </Badge>
+      </Button>
+    </div>
+  </div>
+</template>
+
+<style module>
+.container {
+  display: grid;
+  grid-template-areas: 'title search filters';
+  grid-template-columns: auto 30% 1fr;
+  column-gap: calc(var(--spacing) * 10);
+  row-gap: calc(var(--spacing) * 2);
+}
+
+@media (max-width: 768px) {
+  .container {
+    grid-template-areas:
+      'title filters'
+      'search search';
+    grid-template-columns: 1fr;
+  }
+}
+
+.title {
+  grid-area: title;
+}
+
+.search {
+  grid-area: search;
+}
+
+.filters {
+  grid-area: filters;
+}
+</style>
diff --git a/src/widgets/Blog/ui/BlogList.vue b/src/widgets/Blog/ui/BlogList.vue
new file mode 100644
index 0000000..6f90bb5
--- /dev/null
+++ b/src/widgets/Blog/ui/BlogList.vue
@@ -0,0 +1,62 @@
+<script setup lang="ts">
+import { PostContent, PostMeta, PostTitle } from '@/entities/Post';
+import { SearchListIcon } from '@/shared/icons';
+import { Badge } from '@/shared/ui/Badge';
+import { Button } from '@/shared/ui/Button';
+import { useInjectedPosts } from '../context';
+import BlogModal from './BlogModal.vue';
+
+const { loading, filteredPosts, selectedPost } = useInjectedPosts()!;
+</script>
+
+<template>
+  <BlogModal />
+  <div
+    v-if="filteredPosts.length > 0"
+    class="mx-auto container mt-4 p-4 md:p-7 bg-surface text-surface-foreground rounded-lg grid md:grid-cols-2 xl:grid-cols-3 gap-x-5 gap-y-10"
+  >
+    <Button
+      v-for="post in filteredPosts"
+      :key="post.id"
+      variant="ghost"
+      @click="selectedPost = post"
+    >
+      <figure class="flex flex-col gap-y-2 text-start">
+        <img
+          class="rounded-lg object-cover aspect-[1.6]"
+          :src="post.cover"
+          :alt="post.title"
+        >
+        <figcaption class="contents">
+          <PostMeta
+            :created-at="post.created_at"
+            :content="post.content_full"
+            :comments-length="post.comments.length"
+          />
+          <PostTitle as="h2">
+            {{ post.title }}
+          </PostTitle>
+          <PostContent>
+            {{ post.content_short }}
+          </PostContent>
+          <div class="flex items-center gap-x-2">
+            <Badge v-for="tag in post.tags" :key="tag">
+              {{ tag }}
+            </Badge>
+          </div>
+        </figcaption>
+      </figure>
+    </Button>
+  </div>
+  <div v-else-if="!loading" class="container mx-auto mt-4 p-16 bg-surface text-surface-foreground rounded-lg">
+    <SearchListIcon class="mx-auto size-12 text-gray-400" />
+    <div class="mx-auto max-w-[300px] text-sm text-center">
+      <h2 class="text-foreground-muted font-semibold mt-4">
+        Поиск не дал результатов
+      </h2>
+      <p class="text-foreground-muted-light">
+        Повторите поиск или используйте фильтр для структуризации контента
+      </p>
+    </div>
+  </div>
+</template>
diff --git a/src/widgets/Blog/ui/BlogModal.vue b/src/widgets/Blog/ui/BlogModal.vue
new file mode 100644
index 0000000..63a87a9
--- /dev/null
+++ b/src/widgets/Blog/ui/BlogModal.vue
@@ -0,0 +1,118 @@
+<script setup lang="ts">
+import { computed, ref } from 'vue';
+import Comment from '@/entities/Comment/ui/Comment.vue';
+import { PostMeta, PostTitle } from '@/entities/Post';
+import { useBodyScrollLock } from '@/shared/composables';
+import { XIcon } from '@/shared/icons';
+import { Badge } from '@/shared/ui/Badge';
+import { Button } from '@/shared/ui/Button';
+import { Textarea } from '@/shared/ui/Textarea';
+import { useInjectedPosts } from '../context';
+
+const { selectedPost } = useInjectedPosts()!;
+
+const visible = computed({
+  get: () => !!selectedPost.value,
+  set: (value) => {
+    if (!value)
+      selectedPost.value = null;
+  },
+});
+
+useBodyScrollLock(visible);
+
+const MAX_COMMENT_LENGTH = 250;
+
+const comment = ref<string>('');
+const commentLength = computed(() => comment.value.length);
+const isCommentValid = computed(() => commentLength.value <= MAX_COMMENT_LENGTH);
+
+function clearComment() {
+  comment.value = '';
+}
+</script>
+
+<template>
+  <Teleport v-if="visible" to="#teleports">
+    <div class="fixed inset-0 bg-black/50 modal-backdrop" />
+    <div class="fixed inset-0 flex" @click.self="visible = false">
+      <div class="p-4 max-h-screen md:max-h-[98vh] w-full md:max-w-2xl md:m-auto md:rounded-lg overflow-auto flex flex-col gap-4 bg-surface text-surface-foreground relative">
+        <Button
+          variant="ghost"
+          class="absolute top-4 right-4"
+          @click="visible = false"
+        >
+          <XIcon class="size-5" />
+          <span class="sr-only">Закрыть</span>
+        </Button>
+        <div class="flex flex-col gap-2">
+          <PostTitle>
+            {{ selectedPost!.title }}
+          </PostTitle>
+          <PostMeta
+            :created-at="selectedPost!.created_at"
+            :content="selectedPost!.content_full"
+            :comments-length="selectedPost!.comments.length"
+          />
+        </div>
+        <img
+          class="h-full aspect-video object-cover rounded-lg"
+          :src="selectedPost!.cover"
+          :alt="selectedPost!.title"
+        >
+        <div class="flex flex-col gap-2">
+          <p>
+            {{ selectedPost!.content_full }}
+          </p>
+          <div class="flex gap-2">
+            <Badge v-for="tag in selectedPost!.tags" :key="tag">
+              {{ tag }}
+            </Badge>
+          </div>
+        </div>
+        <div class="flex flex-col gap-2">
+          <div>
+            <h2 class="inline font-semibold text-gray-900">
+              Комментариев
+            </h2>
+            <span class="text-foreground-muted">{{ selectedPost!.comments.length }}</span>
+          </div>
+          <div>
+            <Textarea
+              v-model="comment"
+              name="comment"
+              placeholder="Введите комментарий"
+              :class="{ 'border-danger! outline-danger!': !isCommentValid }"
+            />
+            <span v-if="commentLength > 0" class="text-xs text-foreground-muted">
+              <span :class="{ 'text-danger': !isCommentValid }">
+                {{ commentLength }}
+              </span>
+              из {{ MAX_COMMENT_LENGTH }} символов
+            </span>
+            <div v-if="commentLength > 0" class="flex justify-end gap-2">
+              <Button variant="secondary" @click="clearComment">
+                Отмена
+              </Button>
+              <Button :disabled="!isCommentValid">
+                Опубликовать
+              </Button>
+            </div>
+          </div>
+          <div class="mt-2 flex flex-col gap-4">
+            <Comment
+              v-for="postComment in selectedPost!.comments"
+              :id="postComment.id"
+              :key="postComment.id"
+              :name="postComment.name"
+              :avatar="postComment.avatar"
+              :created_at="postComment.created_at"
+            >
+              {{ postComment.text }}
+            </Comment>
+          </div>
+        </div>
+      </div>
+    </div>
+  </Teleport>
+</template>