enhance rag retrieval + summary

frontend/src/views/TopicsView.vue

@@ -1,7 +1,7 @@
 <template>
   <div class="topics-view">
     <h1 class="page-title">Topics</h1>
-    <p class="page-subtitle">Select a topic to generate an AI-powered summary from uploaded books.</p>
+    <p class="page-subtitle">Select a topic to view or generate an AI-powered summary from uploaded books.</p>
 
     <!-- Loading state -->
     <div v-if="topicStore.loading" class="empty-state">
@@ -18,83 +18,198 @@
     </div>
 
     <div v-else class="topics-layout">
-      <!-- Topic Grid -->
-      <div class="topic-grid">
-        <TopicCard
-          v-for="topic in topicStore.topics"
-          :key="topic.id"
-          :topic="topic"
-          :is-generating="topicStore.activeSummaryTopicId === topic.id"
-          @generate="handleGenerate"
-        />
-      </div>
+      <div class="topics-main">
 
-      <!-- Summary Panel -->
-      <div v-if="topicStore.summaryLoading" class="summary-panel card">
-        <div class="summary-loading">
-          <div class="spinner spinner-dark" style="width:36px;height:36px;margin:0 auto 1rem;"></div>
-          <p class="summary-loading-text">Generating summary from uploaded books...</p>
-          <p class="summary-loading-hint">This may take up to 30 seconds.</p>
-        </div>
-      </div>
+        <!-- Summary history list -->
+        <div v-if="selectedTopicId" class="history-panel card">
+          <div class="history-header">
+            <span class="history-title">Saved summaries</span>
+            <button class="btn btn-primary btn-sm" :disabled="topicStore.summaryLoading" @click="handleGenerate(selectedTopicId!)">
+              <span v-if="topicStore.summaryLoading" class="spinner" style="width:14px;height:14px;display:inline-block;vertical-align:middle;margin-right:4px;"></span>
+              Generate New
+            </button>
+          </div>
 
-      <div v-else-if="summaryError" class="summary-panel card summary-error">
-        <h2 class="summary-topic-name">Summary Error</h2>
-        <p class="error-text">{{ summaryError }}</p>
-        <p v-if="isNoBooks" class="no-books-hint">
-          Please
-          <RouterLink to="/">upload and process at least one book</RouterLink>
-          first.
-        </p>
-      </div>
+          <div v-if="topicStore.summaryListLoading" class="history-loading">
+            <div class="spinner spinner-dark" style="width:20px;height:20px;margin-right:8px;display:inline-block;vertical-align:middle;"></div>
+            Loading...
+          </div>
 
-      <div v-else-if="topicStore.activeSummary" class="summary-panel card">
-        <div class="summary-header">
-          <h2 class="summary-topic-name">{{ topicStore.activeSummary.topicName }}</h2>
-          <span class="summary-timestamp">{{ formatDate(topicStore.activeSummary.generatedAt) }}</span>
-        </div>
+          <div v-else-if="topicStore.summaryList.length === 0" class="history-empty">
+            No summaries yet. Click "Generate New" to create one.
+          </div>
 
-        <div class="summary-text">{{ topicStore.activeSummary.summary }}</div>
-
-        <div v-if="topicStore.activeSummary.sources.length > 0" class="sources-section">
-          <button class="sources-toggle" @click="showSources = !showSources">
-            Sources ({{ topicStore.activeSummary.sources.length }})
-            <span>{{ showSources ? '▲' : '▼' }}</span>
-          </button>
-          <div v-if="showSources" class="sources-list">
-            <div
-              v-for="(source, idx) in topicStore.activeSummary.sources"
-              :key="idx"
-              class="source-chip"
+          <div v-else class="history-list">
+            <button
+              v-for="item in topicStore.summaryList"
+              :key="item.id"
+              class="history-chip"
+              :class="{ 'history-chip--active': topicStore.activeSummary?.id === item.id }"
+              @click="handleLoadSummary(item)"
             >
-              <span class="source-book">{{ source.bookTitle }}</span>
-              <span v-if="source.page" class="source-page">p. {{ source.page }}</span>
-            </div>
+              Summary #{{ item.summaryNumber }}
+              <span class="history-chip-date">· {{ formatDateShort(item.generatedAt) }}</span>
+            </button>
           </div>
         </div>
-        <div v-else class="no-sources">
-          No source citations available for this summary.
+
+        <!-- Summary Panel -->
+        <div v-if="topicStore.summaryLoading" class="summary-panel card">
+          <div class="summary-loading">
+            <div class="spinner spinner-dark" style="width:36px;height:36px;margin:0 auto 1rem;"></div>
+            <p class="summary-loading-text">Generating summary from uploaded books...</p>
+            <p class="summary-loading-hint">This may take up to 30 seconds.</p>
+          </div>
         </div>
-      </div>
+
+        <div v-else-if="summaryError" class="summary-panel card summary-error">
+          <h2 class="summary-topic-name">Summary Error</h2>
+          <p class="error-text">{{ summaryError }}</p>
+          <p v-if="isNoBooks" class="no-books-hint">
+            Please
+            <RouterLink to="/">upload and process at least one book</RouterLink>
+            first.
+          </p>
+        </div>
+
+        <div v-else-if="!topicStore.activeSummary" class="summary-panel card summary-placeholder">
+          <p class="summary-placeholder-text">
+            {{ selectedTopicId ? 'Select a saved summary or generate a new one.' : 'Select a topic to get started.' }}
+          </p>
+        </div>
+
+        <div v-else class="summary-panel card">
+          <div class="summary-header">
+            <h2 class="summary-topic-name">{{ topicStore.activeSummary.topicName }}</h2>
+            <div class="summary-meta">
+              <span v-if="topicStore.activeSummary.summaryNumber" class="summary-number">
+                Summary #{{ topicStore.activeSummary.summaryNumber }}
+              </span>
+              <span class="summary-timestamp">{{ formatDate(topicStore.activeSummary.generatedAt) }}</span>
+            </div>
+          </div>
+
+          <div class="summary-text summary-text--markdown" v-html="renderedSummary" @click="handleSummaryClick"></div>
+
+          <div ref="sourcesSection" v-if="topicStore.activeSummary.sources.length > 0" class="sources-section">
+            <button class="sources-toggle" @click="showSources = !showSources">
+              Sources ({{ topicStore.activeSummary.sources.length }})
+              <span>{{ showSources ? '▲' : '▼' }}</span>
+            </button>
+            <div v-if="showSources" class="sources-list">
+              <div
+                v-for="(source, idx) in topicStore.activeSummary.sources"
+                :key="idx"
+                class="source-chip"
+                :class="{ 'source-chip--clickable': source.bookId && source.page }"
+                @click="source.bookId && source.page ? handleOpenSource(source.bookId, source.page) : undefined"
+              >
+                <span class="source-icon">📖</span>
+                <span class="source-book">{{ source.bookTitle }}</span>
+                <span v-if="source.page" class="source-page">p.&nbsp;{{ source.page }}</span>
+                <span v-if="source.bookId && source.page" class="source-open-hint">↗</span>
+              </div>
+            </div>
+
+            <BookPagePanel
+              v-if="readerPanel"
+              :book-id="readerPanel.bookId"
+              :page="readerPanel.page"
+              :book-title="readerPanel.bookTitle"
+              class="reader-panel"
+              @close="readerPanel = null"
+              @navigate="(p) => readerPanel && (readerPanel.page = p)"
+            />
+          </div>
+          <div v-else class="no-sources">
+            No source citations available for this summary.
+          </div>
+        </div>
+
+        <!-- Topic Grid -->
+        <div class="topic-grid">
+          <TopicCard
+            v-for="topic in summaryTopics"
+            :key="topic.id"
+            :topic="topic"
+            :is-generating="topicStore.activeSummaryTopicId === topic.id"
+            :is-selected="selectedTopicId === topic.id"
+            @generate="handleTopicClick"
+          />
+        </div>
+      </div><!-- end topics-main -->
     </div>
   </div>
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted, inject } from 'vue'
+import { ref, computed, onMounted, inject } from 'vue'
+import { marked } from 'marked'
 import { RouterLink } from 'vue-router'
-import { useTopicStore } from '@/stores/topicStore'
+import { useTopicStore, type SavedSummaryItem } from '@/stores/topicStore'
+import { useBookStore } from '@/stores/bookStore'
 import TopicCard from '@/components/TopicCard.vue'
+import BookPagePanel from '@/components/BookPagePanel.vue'
 
 const topicStore = useTopicStore()
+const bookStore = useBookStore()
 const showToast = inject<(msg: string, type?: 'error' | 'success') => void>('showToast')
 
 const showSources = ref(true)
 const summaryError = ref<string | null>(null)
 const isNoBooks = ref(false)
+const sourcesSection = ref<HTMLElement | null>(null)
+const selectedTopicId = ref<string | null>(null)
+
+interface ReaderPanel { bookId: string; page: number; bookTitle?: string }
+const readerPanel = ref<ReaderPanel | null>(null)
+
+const summaryTopics = computed(() => topicStore.topics.filter(t => t.id !== 'free-form'))
+
+const renderedSummary = computed(() => {
+  if (!topicStore.activeSummary) return ''
+  const html = marked.parse(topicStore.activeSummary.summary) as string
+  return html.replace(/\[S(\d+)\]/g, '<span class="source-ref">[S$1]</span>')
+})
+
+function handleSummaryClick(e: MouseEvent) {
+  if ((e.target as HTMLElement).classList.contains('source-ref')) {
+    showSources.value = true
+    sourcesSection.value?.scrollIntoView({ behavior: 'smooth', block: 'start' })
+  }
+}
+
+function handleOpenSource(bookId: string, page: number) {
+  const book = bookStore.books.find(b => b.id === bookId)
+  readerPanel.value = { bookId, page, bookTitle: book?.title }
+  showSources.value = true
+}
+
+async function handleTopicClick(topicId: string) {
+  if (selectedTopicId.value !== topicId) {
+    selectedTopicId.value = topicId
+    topicStore.activeSummary = null
+    summaryError.value = null
+    await topicStore.fetchSummaries(topicId)
+    // Auto-load the latest summary if any exist
+    const list = topicStore.summaryList
+    if (list.length > 0) {
+      await topicStore.fetchSummaryDetail(topicId, list[list.length - 1].id)
+    }
+  }
+}
+
+async function handleLoadSummary(item: SavedSummaryItem) {
+  if (!selectedTopicId.value) return
+  summaryError.value = null
+  await topicStore.fetchSummaryDetail(selectedTopicId.value, item.id)
+}
 
 onMounted(async () => {
   await topicStore.fetchTopics()
+  if (bookStore.books.length === 0) {
+    await bookStore.fetchBooks()
+  }
 })
 
 async function handleGenerate(topicId: string) {
@@ -109,27 +224,122 @@ async function handleGenerate(topicId: string) {
       summaryError.value.toLowerCase().includes('no books') ||
       summaryError.value.toLowerCase().includes('knowledge source')
     showToast?.(summaryError.value, 'error')
+  } else {
+    // Refresh the history list to include the newly saved summary
+    await topicStore.fetchSummaries(topicId)
   }
 }
 
 function formatDate(iso: string): string {
   return new Date(iso).toLocaleString()
 }
+
+function formatDateShort(iso: string): string {
+  return new Date(iso).toLocaleDateString(undefined, { month: 'short', day: 'numeric' })
+}
 </script>
 
 <style scoped>
 .topics-layout {
+  display: flex;
+  gap: 2rem;
+}
+
+.topics-main {
+  flex: 1;
+  min-width: 0;
   display: flex;
   flex-direction: column;
   gap: 2rem;
 }
 
+.reader-panel {
+  margin-top: 1rem;
+  height: 600px;
+  min-height: 400px;
+  border-radius: 10px;
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.07);
+}
+
 .topic-grid {
   display: grid;
   grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
   gap: 1rem;
 }
 
+/* History panel */
+.history-panel {
+  border-top: 3px solid #805ad5;
+  padding: 1rem;
+}
+
+.history-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: 0.75rem;
+}
+
+.history-title {
+  font-size: 0.875rem;
+  font-weight: 600;
+  color: #553c9a;
+}
+
+.btn-sm {
+  font-size: 0.8rem;
+  padding: 0.3rem 0.75rem;
+}
+
+.history-loading {
+  font-size: 0.85rem;
+  color: #718096;
+  display: flex;
+  align-items: center;
+}
+
+.history-empty {
+  font-size: 0.85rem;
+  color: #a0aec0;
+  font-style: italic;
+}
+
+.history-list {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.5rem;
+}
+
+.history-chip {
+  background: #faf5ff;
+  border: 1px solid #d6bcfa;
+  border-radius: 6px;
+  padding: 0.3rem 0.75rem;
+  font-size: 0.8rem;
+  font-weight: 500;
+  color: #553c9a;
+  cursor: pointer;
+  transition: background 0.15s, border-color 0.15s;
+}
+
+.history-chip:hover {
+  background: #e9d8fd;
+  border-color: #b794f4;
+}
+
+.history-chip--active {
+  background: #805ad5;
+  border-color: #805ad5;
+  color: #fff;
+}
+
+.history-chip-date {
+  font-weight: 400;
+  color: inherit;
+  opacity: 0.75;
+}
+
+/* Summary panel */
 .summary-panel {
   border-top: 3px solid #3182ce;
 }
@@ -170,6 +380,22 @@ function formatDate(iso: string): string {
   color: #1a365d;
 }
 
+.summary-meta {
+  display: flex;
+  align-items: baseline;
+  gap: 0.5rem;
+}
+
+.summary-number {
+  font-size: 0.8rem;
+  font-weight: 600;
+  color: #805ad5;
+  background: #faf5ff;
+  border: 1px solid #d6bcfa;
+  border-radius: 4px;
+  padding: 0.1rem 0.4rem;
+}
+
 .summary-timestamp {
   font-size: 0.8rem;
   color: #a0aec0;
@@ -179,10 +405,60 @@ function formatDate(iso: string): string {
   font-size: 0.95rem;
   line-height: 1.7;
   color: #2d3748;
-  white-space: pre-wrap;
   margin-bottom: 1rem;
 }
 
+.summary-text--markdown {
+  white-space: normal;
+}
+
+.summary-text--markdown :deep(h1),
+.summary-text--markdown :deep(h2),
+.summary-text--markdown :deep(h3),
+.summary-text--markdown :deep(h4) {
+  font-weight: 700;
+  margin: 0.75rem 0 0.35rem;
+  line-height: 1.3;
+  color: #1a202c;
+}
+
+.summary-text--markdown :deep(h1) { font-size: 1.15rem; }
+.summary-text--markdown :deep(h2) { font-size: 1.05rem; }
+.summary-text--markdown :deep(h3) { font-size: 0.975rem; }
+.summary-text--markdown :deep(h4) { font-size: 0.925rem; }
+
+.summary-text--markdown :deep(p) { margin: 0.4rem 0; }
+
+.summary-text--markdown :deep(ul),
+.summary-text--markdown :deep(ol) {
+  padding-left: 1.4rem;
+  margin: 0.4rem 0;
+}
+
+.summary-text--markdown :deep(li) { margin: 0.2rem 0; }
+
+.summary-text--markdown :deep(strong) {
+  font-weight: 700;
+  color: #1a202c;
+}
+
+.summary-text--markdown :deep(em) { font-style: italic; }
+
+.summary-text--markdown :deep(code) {
+  background: #edf2f7;
+  border-radius: 3px;
+  padding: 0.1em 0.35em;
+  font-size: 0.87em;
+  font-family: monospace;
+}
+
+.summary-text--markdown :deep(blockquote) {
+  border-left: 3px solid #bee3f8;
+  margin: 0.5rem 0;
+  padding: 0.25rem 0.75rem;
+  color: #4a5568;
+}
+
 .sources-section {
   border-top: 1px solid #e2e8f0;
   padding-top: 0.75rem;
@@ -223,6 +499,20 @@ function formatDate(iso: string): string {
   font-size: 0.8rem;
 }
 
+.source-chip--clickable {
+  cursor: pointer;
+  transition: background 0.15s, border-color 0.15s;
+}
+
+.source-chip--clickable:hover {
+  background: #bee3f8;
+  border-color: #90cdf4;
+}
+
+.source-icon {
+  font-size: 0.8rem;
+}
+
 .source-book {
   color: #2b6cb0;
   font-weight: 500;
@@ -232,6 +522,12 @@ function formatDate(iso: string): string {
   color: #718096;
 }
 
+.source-open-hint {
+  font-size: 0.75rem;
+  color: #3182ce;
+  margin-left: 0.1rem;
+}
+
 .no-sources {
   font-size: 0.85rem;
   color: #a0aec0;
@@ -252,4 +548,31 @@ function formatDate(iso: string): string {
   color: #3182ce;
   text-decoration: underline;
 }
+
+.summary-placeholder {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  min-height: 6rem;
+  border-top-color: #cbd5e0;
+}
+
+.summary-placeholder-text {
+  font-size: 0.95rem;
+  color: #a0aec0;
+  font-style: italic;
+}
+
+.summary-text--markdown :deep(.source-ref) {
+  color: #3182ce;
+  font-weight: 600;
+  cursor: pointer;
+  border-radius: 3px;
+  padding: 0 0.15em;
+}
+
+.summary-text--markdown :deep(.source-ref:hover) {
+  background: #ebf8ff;
+  text-decoration: underline;
+}
 </style>