重构 AI

docs/API接口对比分析.md

@@ -1,5 +1,19 @@
 # API接口对比分析
 
+## 更新日志
+
+### 最近更新（2025-10）
+- ✨ **AI分析功能增强**：完善了AI智能分析模块的文档说明
+  - 详细说明了4个AI相关接口的功能和参数
+  - 新增等级系统说明（S/A/B/C），包含特殊规则
+  - 补充了时间范围选择功能
+  - 说明了流式响应的实现方式
+  - 前端组件从 `WeeklyChart.vue` 升级为 `DurationChart.vue`（混合图表）
+- 🔧 **数据缓存优化**：后端AI接口增加了缓存机制，提升性能
+- 🐛 **修正等级系统说明**：更正了等级阈值（A级：前35%，B级：前75%），并补充了小规模参与惩罚规则
+
+---
+
 ## 一、前端已使用的API接口
 
 ### 1. 用户认证相关（shared/api.ts）
@@ -65,10 +79,23 @@
 - `GET /api/tutorials` - 获取教程列表
 
 #### 2.11 AI分析相关
-- `GET /api/ai/detail` - 获取AI详细数据
-- `GET /api/ai/weekly` - 获取AI周数据
-- `GET /api/ai/heatmap` - 获取AI热力图数据
-- `POST /api/ai/analysis` - AI分析生成（使用fetch直接调用，流式响应）
+- `GET /api/ai/detail` - 获取用户详细数据
+  - **参数**: start, end（时间范围）
+  - **返回**: 用户等级(S/A/B/C)、已解决题目列表、标签统计、难度统计、参赛次数等
+  - **特点**: 包含班级排名对比，计算每道题的解题排名和等级
+- `GET /api/ai/duration` - 获取时段数据
+  - **参数**: end（结束时间）, duration（时间单位，如 "months:6", "weeks:1"）
+  - **返回**: 每周/每月的综合情况（题目数、提交数、等级）
+  - **用途**: 用于绘制时间趋势图，展示学习进度变化
+- `GET /api/ai/heatmap` - 获取热力图数据
+  - **返回**: 用户的提交热力图数据（按日期统计提交数）
+  - **用途**: 可视化用户活跃度分布
+- `POST /api/ai/analysis` - AI智能分析生成
+  - **请求体**: details（详细数据）, duration（时段数据）
+  - **响应方式**: 流式响应（Server-Sent Events）
+  - **AI提供商**: DeepSeek
+  - **功能**: 根据用户学习数据生成个性化学习建议和鼓励
+  - **实现**: 使用fetch直接调用，在 `oj/store/ai.ts` 中处理流式输出
 
 ### 3. 管理员API（admin/api.ts）
 #### 3.1 仪表板
@@ -278,8 +305,40 @@
 
 ### 特殊说明
 
-#### 1. 流式接口
-`POST /api/ai/analysis` 接口使用了**流式响应（Server-Sent Events）**，因此没有在 `oj/api.ts` 中定义封装函数，而是在 `oj/store/ai.ts` 中直接使用 `fetch` API 调用，用于实时流式输出AI生成的分析内容。
+#### 1. AI智能分析功能 ✨
+
+**功能概述**: 基于用户的学习数据，使用DeepSeek AI生成个性化的学习分析报告和建议。
+
+**涉及接口**:
+- `GET /api/ai/detail` - 获取详细学习数据
+- `GET /api/ai/duration` - 获取时段趋势数据
+- `GET /api/ai/heatmap` - 获取活跃度热力图
+- `POST /api/ai/analysis` - 生成AI分析（流式响应）
+
+**前端实现**:
+- **页面**: `src/oj/ai/analysis.vue`
+- **Store**: `src/oj/store/ai.ts`
+- **组件**: 
+  - `DurationChart.vue` - 混合图表（柱状图+折线图），展示题目数、提交数、等级变化
+  - `Heatmap.vue` - 提交热力图
+  - `Details.vue` - 详细数据展示
+  - `AI.vue` - AI分析结果展示（Markdown格式）
+
+**时间范围选择**:
+支持多种时间范围：一节课(1小时)、两节课(2小时)、一天、一周、一个月、两个月、半年、一年
+
+**等级系统**:
+- **S级**: 排名前10%（卓越水平，约10%的人）
+- **A级**: 排名前35%（优秀水平，约25%的人）
+- **B级**: 排名前75%（良好水平，约40%的人）
+- **C级**: 75%之后（及格水平，约25%的人）
+- **特殊规则**: 参与人数少于10人时，S级降为A级，A级降为B级（避免因人少而评级虚高）
+
+**流式接口实现**:
+`POST /api/ai/analysis` 使用了**流式响应（Server-Sent Events）**，在 `oj/store/ai.ts` 中直接使用 `fetch` API调用，配合 `consumeJSONEventStream` 工具函数处理流式数据，实现AI内容的实时流式输出。
+
+**数据缓存**:
+为提升性能，后端对 `ai/detail` 和 `ai/duration` 接口的返回数据进行了缓存，相同参数的请求会直接返回缓存结果。
 
 #### 2. ACM 比赛辅助检查功能 ✨
 

src/oj/ai/analysis.vue

@@ -1,5 +1,6 @@
 <template>
-  <n-grid :cols="isDesktop ? 5 : 1" :x-gap="20">
+  <n-spin :show="aiStore.loading.fetching">
+    <n-grid :cols="isDesktop ? 5 : 1" :x-gap="20" :y-gap="20">
       <n-gi :span="2">
         <n-flex vertical size="large">
           <n-flex align="center" justify="space-between">
@@ -10,30 +11,50 @@
               v-model:value="aiStore.duration"
             />
           </n-flex>
-        <Details :start="start" :end="end" />
+          <Overview />
+          <n-grid :cols="2" :x-gap="20">
+            <n-gi :span="1">
+              <TagsChart />
+            </n-gi>
+            <n-gi :span="1">
+              <n-flex vertical :size="20">
+                <DifficultyChart />
+                <GradeChart />
+              </n-flex>
+            </n-gi>
+          </n-grid>
+          <SolvedTable />
         </n-flex>
       </n-gi>
       <n-gi :span="3">
         <n-flex vertical size="large">
           <Heatmap />
-        <WeeklyChart :end="end" />
-        <AI v-if="aiStore.detailsData.solved.length" />
+          <ProgressChart />
+          <DurationChart />
+          <AI v-if="aiStore.detailsData.solved.length >= 10" />
         </n-flex>
       </n-gi>
+      <n-gi :span="5">
+        <AI v-if="aiStore.detailsData.solved.length > 0 && aiStore.detailsData.solved.length < 10" />
+      </n-gi>
     </n-grid>
+  </n-spin>
 </template>
 <script setup lang="ts">
 import { isDesktop } from "shared/composables/breakpoints"
 import { formatISO, sub, type Duration } from "date-fns"
-import WeeklyChart from "./components/WeeklyChart.vue"
-import Details from "./components/Details.vue"
+import TagsChart from "./components/TagsChart.vue"
+import DifficultyChart from "./components/DifficultyChart.vue"
+import GradeChart from "./components/GradeChart.vue"
+import Overview from "./components/Overview.vue"
 import Heatmap from "./components/Heatmap.vue"
+import ProgressChart from "./components/ProgressChart.vue"
+import DurationChart from "./components/DurationChart.vue"
 import AI from "./components/AI.vue"
+import SolvedTable from "./components/SolvedTable.vue"
 import { useAIStore } from "../store/ai"
-const aiStore = useAIStore()
 
-const start = ref("")
-const end = ref("")
+const aiStore = useAIStore()
 
 const options: SelectOption[] = [
   { label: "一节课内", value: "hours:1" },
@@ -54,11 +75,25 @@ const subOptions = computed<Duration>(() => {
   return { [unit]: parseInt(n) } as Duration
 })
 
-function updateRange() {
+const start = computed(() => {
   const current = new Date()
-  end.value = formatISO(current)
-  start.value = formatISO(sub(current, subOptions.value))
-}
+  return formatISO(sub(current, subOptions.value))
+})
 
-watch(() => aiStore.duration, updateRange, { immediate: true })
+const end = computed(() => {
+  return formatISO(new Date())
+})
+
+// 获取热力图数据（仅一次）
+onMounted(() => {
+  aiStore.fetchHeatmapData()
+})
+
+watch(
+  () => aiStore.duration,
+  () => {
+    aiStore.fetchAnalysisData(start.value, end.value, aiStore.duration)
+  },
+  { immediate: true },
+)
 </script>

src/oj/ai/components/AI.vue

@@ -1,9 +1,11 @@
 <template>
+  <n-card title="AI 智能分析" size="small">
     <n-spin :show="aiStore.loading.ai">
       <div class="container">
         <MdPreview :model-value="aiStore.mdContent" />
       </div>
     </n-spin>
+  </n-card>
 </template>
 <script setup lang="ts">
 import { useAIStore } from "oj/store/ai"
@@ -12,9 +14,9 @@ import "md-editor-v3/lib/preview.css"
 
 const aiStore = useAIStore()
 watch(
-  () => [aiStore.loading.details, aiStore.loading.weekly],
-  (newVal) => {
-    if (newVal.every((val) => val === false)) {
+  () => aiStore.loading.fetching,
+  (isLoading) => {
+    if (!isLoading) {
       aiStore.fetchAIAnalysis()
     }
   },

src/oj/ai/components/Details.vue

@@ -1,145 +0,0 @@
-<template>
-  <n-spin :show="aiStore.loading.details">
-    <n-flex vertical size="large">
-      <n-alert
-        :show-icon="false"
-        type="success"
-        v-if="aiStore.detailsData.solved.length"
-      >
-        <span>{{ durationLabel }}，</span>
-        <span>你一共解决 </span>
-        <b class="charming"> {{ aiStore.detailsData.solved.length }} </b>
-        <span> 道题，</span>
-        <span v-if="aiStore.detailsData.contest_count > 0">
-          并且参加
-          <b class="charming"> {{ aiStore.detailsData.contest_count }} </b>
-          次比赛，
-        </span>
-        <span>综合评价给到</span>
-        <Grade :grade="aiStore.detailsData.grade" />
-        <span>{{ greeting }}</span>
-      </n-alert>
-      <n-flex vertical size="large" v-else>
-        <n-alert type="error" title="你还没有完成任何题目"></n-alert>
-        <AI />
-      </n-flex>
-      <n-grid :cols="isDesktop ? 2 : 1" :x-gap="10" :y-gap="10">
-        <n-gi>
-          <TagsChart :tags="aiStore.detailsData.tags" />
-        </n-gi>
-        <n-gi>
-          <DifficultyChart :difficulty="aiStore.detailsData.difficulty" />
-        </n-gi>
-      </n-grid>
-      <n-data-table
-        v-if="aiStore.detailsData.solved.length"
-        striped
-        :data="aiStore.detailsData.solved"
-        :columns="columns"
-      />
-    </n-flex>
-  </n-spin>
-</template>
-<script lang="ts" setup>
-import { NButton } from "naive-ui"
-import Grade from "./Grade.vue"
-import TagsChart from "./TagsChart.vue"
-import DifficultyChart from "./DifficultyChart.vue"
-import TagTitle from "./TagTitle.vue"
-import AI from "./AI.vue"
-import { parseTime } from "utils/functions"
-import { SolvedProblem } from "utils/types"
-import { useAIStore } from "oj/store/ai"
-import { isDesktop } from "shared/composables/breakpoints"
-
-const props = defineProps<{
-  start: string
-  end: string
-}>()
-
-const router = useRouter()
-const aiStore = useAIStore()
-
-const columns: DataTableColumn<SolvedProblem>[] = [
-  {
-    title: "完成的题目",
-    key: "problem.title",
-    render: (row) =>
-      h(
-        NButton,
-        {
-          text: true,
-          onClick: () => {
-            if (row.problem.contest_id) {
-              router.push(
-                "/contest/" +
-                  row.problem.contest_id +
-                  "/problem/" +
-                  row.problem.display_id,
-              )
-            } else {
-              router.push("/problem/" + row.problem.display_id)
-            }
-          },
-        },
-        () => {
-          if (row.problem.contest_id) {
-            return h(TagTitle, { problem: row.problem })
-          } else {
-            return row.problem.display_id + " " + row.problem.title
-          }
-        },
-      ),
-  },
-  {
-    title: () => (aiStore.detailsData.class_name ? "班级排名" : "全服排名"),
-    key: "rank",
-    width: 100,
-    align: "center",
-    render: (row) => row.rank + " / " + row.ac_count,
-  },
-  {
-    title: "等级",
-    key: "grade",
-    width: 100,
-    align: "center",
-  },
-]
-
-const durationLabel = computed(() => {
-  if (aiStore.duration.includes("hours")) {
-    return `在 ${parseTime(aiStore.detailsData.start, "HH:mm")} - ${parseTime(aiStore.detailsData.end, "HH:mm")} 期间`
-  } else if (aiStore.duration.includes("days")) {
-    return `在 ${parseTime(aiStore.detailsData.end, "MM月DD日")}`
-  } else if (
-    aiStore.duration.includes("weeks") ||
-    aiStore.duration.includes("months")
-  ) {
-    return `在 ${parseTime(aiStore.detailsData.start, "MM月DD日")} - ${parseTime(aiStore.detailsData.end, "MM月DD日")} 期间`
-  } else {
-    return `在 ${parseTime(aiStore.detailsData.start, "YYYY年MM月DD日")} - ${parseTime(aiStore.detailsData.end, "YYYY年MM月DD日")} 期间`
-  }
-})
-
-const greeting = computed(() => {
-  return {
-    S: "要不试试高难度题目？",
-    A: "你很棒，继续保持！",
-    B: "请再接再厉！",
-    C: "你还需要努力！",
-  }[aiStore.detailsData.grade]
-})
-
-watch(
-  () => aiStore.duration,
-  () => {
-    aiStore.fetchDetailsData(props.start, props.end)
-  },
-  { immediate: true },
-)
-</script>
-<style scoped>
-.charming {
-  font-size: 1.2rem;
-}
-</style>

src/oj/ai/components/DifficultyChart.vue

@@ -1,7 +1,7 @@
 <template>
-  <div class="chart" v-if="show">
+  <n-card title="难度统计" size="small" v-if="show">
     <Bar :data="data" :options="options" />
-  </div>
+  </n-card>
 </template>
 <script setup lang="ts">
 import { Bar } from "vue-chartjs"
@@ -15,6 +15,7 @@ import {
   Legend,
   Colors,
 } from "chart.js"
+import { useAIStore } from "oj/store/ai"
 
 // 仅注册柱状图所需的 Chart.js 组件
 ChartJS.register(
@@ -27,20 +28,18 @@ ChartJS.register(
   Colors,
 )
 
-const props = defineProps<{
-  difficulty: { [key: string]: number }
-}>()
+const aiStore = useAIStore()
 
 const show = computed(() => {
-  return Object.values(props.difficulty).reduce((a, b) => a + b, 0) > 0
+  return Object.values(aiStore.detailsData.difficulty).reduce((a, b) => a + b, 0) > 0
 })
 
 const data = computed(() => {
   return {
-    labels: Object.keys(props.difficulty),
+    labels: Object.keys(aiStore.detailsData.difficulty),
     datasets: [
       {
-        data: Object.values(props.difficulty),
+        data: Object.values(aiStore.detailsData.difficulty),
         backgroundColor: ["#FF6384", "#36A2EB", "#FFCE56"],
       },
     ],
@@ -52,28 +51,20 @@ const options = {
     intersect: false,
   },
   maintainAspectRatio: false,
+  scales: {
     y: {
       ticks: {
         stepSize: 1,
       },
     },
+  },
   plugins: {
     legend: {
       display: false,
     },
     title: {
-      text: "题目的难度统计",
-      display: true,
-      font: {
-        size: 20,
-      },
+      display: false,
     },
   },
 }
 </script>
-<style scoped>
-.chart {
-  height: 100%;
-  width: 100%;
-}
-</style>

src/oj/ai/components/DurationChart.vue

@@ -1,9 +1,9 @@
 <template>
-  <n-spin :show="aiStore.loading.weekly">
+  <n-card :title="title" size="small">
     <div class="chart">
       <Chart type="bar" :data="data" :options="options" />
     </div>
-  </n-spin>
+  </n-card>
 </template>
 <script setup lang="ts">
 import type { ChartData, ChartOptions, TooltipItem } from "chart.js"
@@ -38,56 +38,52 @@ ChartJS.register(
   LineController,
 )
 
-const props = defineProps<{
-  end: string
-}>()
-
 const aiStore = useAIStore()
 
 const gradeOrder = ["C", "B", "A", "S"] as const
 
 const title = computed(() => {
   if (aiStore.duration === "months:2") {
-    return "过去两个月的每周综合情况一览图"
+    return "过去两个月的每周综合情况"
   } else if (aiStore.duration === "months:6") {
-    return "过去半年的每月综合情况一览图"
+    return "过去半年的每月综合情况"
   } else if (aiStore.duration === "years:1") {
-    return "过去一年的每月综合情况一览图"
+    return "过去一年的每月综合情况"
   } else {
-    return "过去四周的综合情况一览图"
+    return "过去四周的综合情况"
   }
 })
 
 const data = computed<ChartData<"bar" | "line">>(() => {
   return {
-    labels: aiStore.weeklyData.map((weekly) => {
+    labels: aiStore.durationData.map((duration) => {
       let prefix = "周"
-      if (weekly.unit === "months") {
+      if (duration.unit === "months") {
         prefix = "月"
       }
       return [
-        parseTime(weekly.start, "M月D日"),
-        parseTime(weekly.end, "M月D日"),
+        parseTime(duration.start, "M月D日"),
+        parseTime(duration.end, "M月D日"),
       ].join("～")
     }),
     datasets: [
       {
         type: "bar",
         label: "完成题目数量",
-        data: aiStore.weeklyData.map((weekly) => weekly.problem_count),
+        data: aiStore.durationData.map((duration) => duration.problem_count),
         yAxisID: "y",
       },
       {
         type: "bar",
         label: "总提交次数",
-        data: aiStore.weeklyData.map((weekly) => weekly.submission_count),
+        data: aiStore.durationData.map((duration) => duration.submission_count),
         yAxisID: "y",
       },
       {
         type: "line",
         label: "等级",
-        data: aiStore.weeklyData.map((weekly) =>
-          gradeOrder.indexOf(weekly.grade || "C"),
+        data: aiStore.durationData.map((duration) =>
+          gradeOrder.indexOf(duration.grade || "C"),
         ),
         tension: 0.4,
         yAxisID: "y1",
@@ -125,11 +121,7 @@ const options = computed<ChartOptions<"bar" | "line">>(() => {
     },
     plugins: {
       title: {
-        text: title.value,
-        display: true,
-        font: {
-          size: 20,
-        },
+        display: false,
       },
       tooltip: {
         callbacks: {
@@ -147,13 +139,6 @@ const options = computed<ChartOptions<"bar" | "line">>(() => {
   }
 })
 
-watch(
-  () => aiStore.duration,
-  () => {
-    aiStore.fetchWeeklyData(props.end, aiStore.duration)
-  },
-  { immediate: true },
-)
 </script>
 <style scoped>
 .chart {

src/oj/ai/components/GradeChart.vue

@@ -0,0 +1,93 @@
+<template>
+  <n-card title="等级统计" size="small" v-if="show">
+    <Bar :data="data" :options="options" />
+  </n-card>
+</template>
+<script setup lang="ts">
+import { Bar } from "vue-chartjs"
+import {
+  Chart as ChartJS,
+  CategoryScale,
+  LinearScale,
+  BarElement,
+  Title,
+  Tooltip,
+  Legend,
+  Colors,
+} from "chart.js"
+import { Grade } from "utils/types"
+import { useAIStore } from "oj/store/ai"
+
+// 仅注册柱状图所需的 Chart.js 组件
+ChartJS.register(
+  CategoryScale,
+  LinearScale,
+  BarElement,
+  Title,
+  Tooltip,
+  Legend,
+  Colors,
+)
+
+const aiStore = useAIStore()
+
+const gradeOrder = ["S", "A", "B", "C"]
+
+const grades = computed(() =>
+  aiStore.detailsData.solved.map((item) => item.grade),
+)
+
+// 统计每个等级的题目数量
+const gradeCount = computed(() => {
+  const count: { [key: string]: number } = {
+    C: 0,
+    B: 0,
+    A: 0,
+    S: 0,
+  }
+  grades.value.forEach((grade) => {
+    if (grade && grade in count) {
+      count[grade]++
+    }
+  })
+  return count
+})
+
+const show = computed(() => {
+  return grades.value.length > 0
+})
+
+const data = computed(() => {
+  return {
+    labels: gradeOrder,
+    datasets: [
+      {
+        data: gradeOrder.map((grade) => gradeCount.value[grade]),
+        backgroundColor: ["#FF6384", "#FFCE56", "#36A2EB", "#95F204"],
+      },
+    ],
+  }
+})
+
+const options = {
+  interaction: {
+    intersect: false,
+  },
+  maintainAspectRatio: false,
+  scales: {
+    y: {
+      ticks: {
+        stepSize: 1,
+      },
+    },
+  },
+  plugins: {
+    legend: {
+      display: false,
+    },
+    title: {
+      display: false,
+    },
+  },
+}
+</script>

src/oj/ai/components/Heatmap.vue

@@ -1,43 +1,270 @@
 <template>
-  <div class="chart">
-    <n-h1 class="title">过去一年的提交次数热力图</n-h1>
-    <n-heatmap
-      :loading="!data.length"
-      :color-theme="getRandomColorTheme()"
-      size="large"
-      :data="data"
-      :tooltip="{ placement: 'top' }"
+  <n-card title="过去一年的提交热力图" size="small">
+    <n-spin :show="aiStore.loading.heatmap">
+      <div class="heatmap-container" ref="containerRef">
+        <svg
+          :viewBox="`0 0 ${svgWidth} ${svgHeight}`"
+          preserveAspectRatio="xMinYMin meet"
+          class="heatmap-svg"
         >
-      <template #tooltip="{ timestamp, value }">
-        <div>{{ new Date(timestamp).toLocaleDateString() }}</div>
-        <div>提交次数: {{ value }}</div>
-      </template>
-    </n-heatmap>
+          <g v-for="label in monthLabels" :key="`${label.text}-${label.x}`">
+            <text :x="label.x" :y="10" class="label" font-size="10">
+              {{ label.text }}
+            </text>
+          </g>
+
+          <g v-for="(day, i) in WEEK_DAYS" :key="i">
+            <text :x="0" :y="MONTH_HEIGHT + i * CELL_TOTAL + 8" class="label" font-size="9">
+              {{ day }}
+            </text>
+          </g>
+
+          <g :transform="`translate(${DAY_WIDTH}, ${MONTH_HEIGHT})`">
+            <rect
+              v-for="(cell, i) in cells"
+              :key="i"
+              :x="cell.x"
+              :y="cell.y"
+              :width="CELL_SIZE"
+              :height="CELL_SIZE"
+              :fill="cell.color"
+              class="cell"
+              rx="2"
+              @mouseenter="(e) => showTooltip(e, cell)"
+              @mouseleave="hideTooltip"
+            />
+          </g>
+        </svg>
+
+        <div class="legend">
+          <span>少</span>
+          <div class="legend-colors">
+            <div v-for="(color, i) in COLORS" :key="i" :style="{ backgroundColor: color }" />
           </div>
+          <span>多</span>
+        </div>
+
+        <div v-if="tooltip" class="tooltip" :style="tooltipStyle">
+          <div class="tooltip-date">{{ tooltip.date }}</div>
+          <div class="tooltip-count" :class="{ active: tooltip.count > 0 }">
+            {{ tooltip.text }}
+          </div>
+        </div>
+      </div>
+    </n-spin>
+  </n-card>
 </template>
+
 <script setup lang="ts">
-import { type HeatmapData } from "naive-ui"
-import { getAIHeatmapData } from "oj/api"
+import { useAIStore } from "oj/store/ai"
+import { parseTime } from "utils/functions"
 
-const data = ref<HeatmapData>([])
+const aiStore = useAIStore()
+const containerRef = ref<HTMLElement>()
 
-function getRandomColorTheme() {
-  const themes = ["green", "blue", "orange", "purple", "red"] as const
-  return themes[Math.floor(Math.random() * themes.length)]
-}
+const CELL_SIZE = 12
+const CELL_GAP = 3
+const CELL_TOTAL = CELL_SIZE + CELL_GAP
+const DAY_WIDTH = 20
+const MONTH_HEIGHT = 20
+const RIGHT_PADDING = 5
+const LEGEND_HEIGHT = 20
+const COLORS = ["#ebedf0", "#c6e48b", "#7bc96f", "#239a3b", "#196127"]
+const WEEK_DAYS = ["", "一", "", "三", "", "五", ""]
 
-onMounted(async () => {
-  const res = await getAIHeatmapData()
-  data.value = res.data
+const getColor = (count: number) => 
+  count === 0 ? COLORS[0] :
+  count <= 2 ? COLORS[1] :
+  count <= 4 ? COLORS[2] :
+  count <= 7 ? COLORS[3] : COLORS[4]
+
+const cells = computed(() => 
+  aiStore.heatmapData.map((item, i) => ({
+    date: new Date(item.timestamp),
+    count: item.value,
+    color: getColor(item.value),
+    week: Math.floor(i / 7),
+    day: i % 7,
+    x: Math.floor(i / 7) * CELL_TOTAL,
+    y: (i % 7) * CELL_TOTAL,
+  }))
+)
+
+const monthLabels = computed(() => {
+  const labels: { text: string; x: number }[] = []
+  let lastMonth = -1
+  
+  cells.value.forEach((cell, i) => {
+    const month = cell.date.getMonth()
+    const isWeekStart = cell.date.getDay() === 0 || i === 0
+    
+    if (month !== lastMonth && (isWeekStart || cell.date.getDay() <= 3)) {
+      labels.push({
+        text: `${month + 1}月`,
+        x: DAY_WIDTH + cell.week * CELL_TOTAL,
       })
-</script>
-<style scoped>
-.chart {
-  margin: 0 auto;
+      lastMonth = month
+    }
+  })
+  
+  return labels
+})
+
+const svgWidth = computed(() => 
+  DAY_WIDTH + Math.ceil(cells.value.length / 7) * CELL_TOTAL + RIGHT_PADDING
+)
+
+const svgHeight = computed(() => 
+  MONTH_HEIGHT + 7 * CELL_TOTAL + LEGEND_HEIGHT
+)
+
+interface Cell {
+  date: Date
+  count: number
+  color: string
+  week: number
+  day: number
+  x: number
+  y: number
+}
+
+const tooltip = ref<{
+  x: number
+  y: number
+  date: string
+  text: string
+  count: number
+} | null>(null)
+
+const tooltipStyle = computed(() => ({
+  left: `${tooltip.value?.x}px`,
+  top: `${tooltip.value?.y}px`,
+}))
+
+const getTooltipText = (count: number) => 
+  count === 0 ? "没有提交记录" : `提交了 ${count} 次`
+
+const showTooltip = (e: MouseEvent, cell: Cell) => {
+  const rect = (e.target as HTMLElement).getBoundingClientRect()
+  const containerRect = containerRef.value?.getBoundingClientRect()
+  
+  if (containerRect) {
+    tooltip.value = {
+      x: rect.left - containerRect.left + rect.width / 2,
+      y: rect.top - containerRect.top - 10,
+      date: parseTime(cell.date, "YYYY年M月D日"),
+      text: getTooltipText(cell.count),
+      count: cell.count,
+    }
+  }
+}
+
+const hideTooltip = () => {
+  tooltip.value = null
+}
+</script>
+
+<style scoped>
+.heatmap-container {
+  width: 100%;
+  padding: 10px 0;
+  position: relative;
+}
+
+.heatmap-svg {
+  width: 100%;
+  height: auto;
+  display: block;
+}
+
+.label {
+  fill: currentColor;
+  opacity: 0.7;
+}
+
+.cell {
+  cursor: pointer;
+  transition: all 0.2s ease;
+  stroke: rgba(0, 0, 0, 0.05);
+  stroke-width: 0.5;
+}
+
+.cell:hover {
+  stroke: rgba(0, 0, 0, 0.3);
+  stroke-width: 1.5;
+  filter: brightness(0.9);
+}
+
+.legend {
+  display: flex;
+  align-items: center;
+  justify-content: flex-end;
+  gap: 4px;
+  margin-top: 10px;
+  font-size: 12px;
+  opacity: 0.7;
+}
+
+.legend-colors {
+  display: flex;
+  gap: 3px;
+}
+
+.legend-colors > div {
+  width: 12px;
+  height: 12px;
+  border-radius: 2px;
+  border: 1px solid rgba(0, 0, 0, 0.05);
+}
+
+.tooltip {
+  position: absolute;
+  transform: translate(-50%, -100%);
+  background: rgba(0, 0, 0, 0.9);
+  color: white;
+  padding: 8px 12px;
+  border-radius: 6px;
+  font-size: 12px;
+  line-height: 1.5;
+  pointer-events: none;
+  z-index: 1000;
+  white-space: nowrap;
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
+  animation: fade-in 0.2s ease;
+}
+
+.tooltip::after {
+  content: "";
+  position: absolute;
+  top: 100%;
+  left: 50%;
+  transform: translateX(-50%);
+  border: 6px solid transparent;
+  border-top-color: rgba(0, 0, 0, 0.9);
+}
+
+.tooltip-date {
+  font-weight: 500;
+  margin-bottom: 2px;
+}
+
+.tooltip-count {
+  opacity: 0.6;
+}
+
+.tooltip-count.active {
+  color: #7bc96f;
+  opacity: 0.9;
+}
+
+@keyframes fade-in {
+  from {
+    opacity: 0;
+    transform: translate(-50%, calc(-100% - 5px));
+  }
+  to {
+    opacity: 1;
+    transform: translate(-50%, -100%);
   }
-.title {
-  text-align: center;
-  font-size: 20px;
-  font-weight: bold;
 }
 </style>

src/oj/ai/components/Overview.vue

@@ -0,0 +1,63 @@
+<template>
+  <n-alert
+    :show-icon="false"
+    type="success"
+    v-if="aiStore.detailsData.solved.length"
+  >
+    <span>{{ durationLabel }}，</span>
+    <span>你一共解决 </span>
+    <b class="charming"> {{ aiStore.detailsData.solved.length }} </b>
+    <span> 道题</span>
+    <span v-if="aiStore.detailsData.contest_count > 0">
+      ，并且参加
+      <b class="charming"> {{ aiStore.detailsData.contest_count }} </b>
+      次比赛
+    </span>
+    <span>，综合评价给到</span>
+    <Grade :grade="aiStore.detailsData.grade" />
+    <span>{{ greeting }}</span>
+  </n-alert>
+  <n-flex vertical size="large" v-else>
+    <n-alert type="error" title="你还没有完成任何题目">
+      开始解题，看看你的学习能力吧！
+    </n-alert>
+    <AI />
+  </n-flex>
+</template>
+<script lang="ts" setup>
+import Grade from "./Grade.vue"
+import { parseTime } from "utils/functions"
+import { useAIStore } from "oj/store/ai"
+import AI from "./AI.vue"
+
+const aiStore = useAIStore()
+
+const durationLabel = computed(() => {
+  if (aiStore.duration.includes("hours")) {
+    return `在 ${parseTime(aiStore.detailsData.start, "HH:mm")} - ${parseTime(aiStore.detailsData.end, "HH:mm")} 期间`
+  } else if (aiStore.duration.includes("days")) {
+    return `在 ${parseTime(aiStore.detailsData.end, "MM月DD日")}`
+  } else if (
+    aiStore.duration.includes("weeks") ||
+    aiStore.duration.includes("months")
+  ) {
+    return `在 ${parseTime(aiStore.detailsData.start, "MM月DD日")} - ${parseTime(aiStore.detailsData.end, "MM月DD日")} 期间`
+  } else {
+    return `在 ${parseTime(aiStore.detailsData.start, "YYYY年MM月DD日")} - ${parseTime(aiStore.detailsData.end, "YYYY年MM月DD日")} 期间`
+  }
+})
+
+const greeting = computed(() => {
+  return {
+    S: "要不试试高难度题目？",
+    A: "你很棒，继续保持！",
+    B: "请再接再厉！",
+    C: "你还需要努力！",
+  }[aiStore.detailsData.grade]
+})
+</script>
+<style scoped>
+.charming {
+  font-size: 1.2rem;
+}
+</style>

src/oj/ai/components/ProgressChart.vue

@@ -0,0 +1,259 @@
+<template>
+  <n-card :title="title" size="small" v-if="show">
+    <div class="chart">
+      <Chart type="line" :data="data" :options="options" />
+    </div>
+  </n-card>
+</template>
+<script setup lang="ts">
+import type { ChartData, ChartOptions, TooltipItem } from "chart.js"
+import { Chart } from "vue-chartjs"
+import {
+  Chart as ChartJS,
+  CategoryScale,
+  LinearScale,
+  PointElement,
+  LineElement,
+  Title,
+  Tooltip,
+  Legend,
+  Colors,
+  Filler,
+} from "chart.js"
+import { useAIStore } from "oj/store/ai"
+import { parseTime } from "utils/functions"
+import type { Grade } from "utils/types"
+
+// 注册折线图所需的 Chart.js 组件
+ChartJS.register(
+  CategoryScale,
+  LinearScale,
+  PointElement,
+  LineElement,
+  Title,
+  Tooltip,
+  Legend,
+  Colors,
+  Filler,
+)
+
+const aiStore = useAIStore()
+
+const gradeOrder = ["C", "B", "A", "S"] as const
+const gradeColors: Record<Grade, string> = {
+  C: "#95F204",
+  B: "#36A2EB",
+  A: "#FFCE56",
+  S: "#FF6384",
+}
+
+const title = computed(() => {
+  const durationMap: Record<string, string> = {
+    "hours:1": "一节课内",
+    "hours:2": "两节课内",
+    "days:1": "一天内",
+    "weeks:1": "一周内",
+    "months:1": "一个月内",
+    "months:2": "两个月内",
+    "months:6": "半年内",
+    "years:1": "一年内",
+  }
+  const label = durationMap[aiStore.duration] || ""
+  return label ? `${label}做题的进步曲线` : "做题的进步曲线"
+})
+
+// 判断是否有数据
+const show = computed(() => {
+  return aiStore.detailsData.solved.length > 0
+})
+
+// 按时间排序的题目列表
+const sortedProblems = computed(() => {
+  return [...aiStore.detailsData.solved].sort(
+    (a, b) => new Date(a.ac_time).getTime() - new Date(b.ac_time).getTime(),
+  )
+})
+
+// 计算累计题目数量和等级趋势
+const progressData = computed(() => {
+  const problems = sortedProblems.value
+  let cumulativeCount = 0
+  const gradeValues: { [key: string]: number } = { C: 0, B: 0, A: 0, S: 0 }
+
+  return problems.map((problem) => {
+    cumulativeCount++
+    const grade = problem.grade || "C"
+    gradeValues[grade]++
+
+    // 计算平均等级（加权平均）
+    let totalWeight = 0
+    let weightedSum = 0
+    for (const [g, count] of Object.entries(gradeValues)) {
+      totalWeight += count
+      weightedSum += gradeOrder.indexOf(g as Grade) * count
+    }
+    const avgGrade = totalWeight > 0 ? weightedSum / totalWeight : 0
+
+    return {
+      time: parseTime(problem.ac_time, "M/D"),
+      fullTime: parseTime(problem.ac_time, "YYYY-MM-DD HH:mm:ss"),
+      count: cumulativeCount,
+      grade: problem.grade || "C",
+      avgGrade: avgGrade,
+      problem: problem.problem,
+    }
+  })
+})
+
+// 图表数据
+const data = computed<ChartData<"line">>(() => {
+  const progress = progressData.value
+
+  return {
+    labels: progress.map((p) => p.time),
+    datasets: [
+      {
+        type: "line",
+        label: "累计完成题目",
+        data: progress.map((p) => p.count),
+        borderColor: "#4CAF50",
+        backgroundColor: "rgba(76, 175, 80, 0.1)",
+        tension: 0.3,
+        yAxisID: "y",
+        fill: true,
+        pointRadius: 4,
+        pointHoverRadius: 6,
+        borderWidth: 2,
+      },
+      {
+        type: "line",
+        label: "平均等级",
+        data: progress.map((p) => p.avgGrade),
+        borderColor: "#FF9800",
+        backgroundColor: "rgba(255, 152, 0, 0.1)",
+        tension: 0.3,
+        yAxisID: "y1",
+        fill: false,
+        pointRadius: 4,
+        pointHoverRadius: 6,
+        borderWidth: 2,
+        pointBackgroundColor: progress.map((p) => gradeColors[p.grade]),
+        pointBorderColor: progress.map((p) => gradeColors[p.grade]),
+        pointBorderWidth: 2,
+      },
+    ],
+  }
+})
+
+// 图表配置
+const options = computed<ChartOptions<"line">>(() => {
+  return {
+    responsive: true,
+    maintainAspectRatio: false,
+    interaction: {
+      mode: "index",
+      intersect: false,
+    },
+    scales: {
+      x: {
+        ticks: {
+          maxRotation: 0,
+          minRotation: 0,
+          autoSkip: true,
+          maxTicksLimit: 15,
+        },
+      },
+      y: {
+        type: "linear",
+        position: "left",
+        title: {
+          display: true,
+          text: "累计题目数",
+          font: {
+            size: 14,
+          },
+        },
+        ticks: {
+          stepSize: 1,
+        },
+        beginAtZero: true,
+      },
+      y1: {
+        type: "linear",
+        position: "right",
+        min: -0.5,
+        max: gradeOrder.length - 0.5,
+        title: {
+          display: true,
+          text: "平均等级",
+          font: {
+            size: 14,
+          },
+        },
+        ticks: {
+          stepSize: 1,
+          callback: (v) => {
+            const idx = Math.round(Number(v))
+            return gradeOrder[idx] || ""
+          },
+        },
+        grid: {
+          drawOnChartArea: false,
+        },
+      },
+    },
+    plugins: {
+      title: {
+        display: false,
+      },
+      tooltip: {
+        callbacks: {
+          title: (items: TooltipItem<"line">[]) => {
+            if (items.length > 0) {
+              const idx = items[0].dataIndex
+              return progressData.value[idx]?.fullTime || ""
+            }
+            return ""
+          },
+          label: (ctx: TooltipItem<"line">) => {
+            const dsLabel = ctx.dataset.label || ""
+            const idx = ctx.dataIndex
+
+            if ((ctx.dataset as any).yAxisID === "y1") {
+              const progress = progressData.value[idx]
+              if (progress) {
+                const avgIdx = Math.round(Number(ctx.parsed.y))
+                return [
+                  `${dsLabel}: ${gradeOrder[avgIdx] || ""}`,
+                  `当前题目等级: ${progress.grade}`,
+                  `题目: ${progress.problem.title}`,
+                ]
+              }
+            } else {
+              return `${dsLabel}: ${ctx.formattedValue}`
+            }
+            return `${dsLabel}: ${ctx.formattedValue}`
+          },
+        },
+      },
+      legend: {
+        display: true,
+        position: "top",
+        labels: {
+          usePointStyle: true,
+          padding: 15,
+          font: {
+            size: 12,
+          },
+        },
+      },
+    },
+  }
+})
+</script>
+<style scoped>
+.chart {
+  height: 300px;
+  width: 100%;
+}
+</style>

src/oj/ai/components/SolvedTable.vue

@@ -0,0 +1,68 @@
+<template>
+  <n-data-table
+    v-if="solvedProblems.length"
+    striped
+    :data="solvedProblems"
+    :columns="columns"
+    :max-height="isDesktop ? 2000 : 500"
+  />
+</template>
+
+<script lang="ts" setup>
+import { NButton } from "naive-ui"
+import TagTitle from "./TagTitle.vue"
+import { SolvedProblem } from "utils/types"
+import { useAIStore } from "oj/store/ai"
+import { isDesktop } from "shared/composables/breakpoints"
+
+const router = useRouter()
+const aiStore = useAIStore()
+
+const solvedProblems = computed(() => aiStore.detailsData.solved)
+
+const columns: DataTableColumn<SolvedProblem>[] = [
+  {
+    title: "完成的题目",
+    key: "problem.title",
+    render: (row) =>
+      h(
+        NButton,
+        {
+          text: true,
+          onClick: () => {
+            if (row.problem.contest_id) {
+              router.push(
+                "/contest/" +
+                  row.problem.contest_id +
+                  "/problem/" +
+                  row.problem.display_id,
+              )
+            } else {
+              router.push("/problem/" + row.problem.display_id)
+            }
+          },
+        },
+        () => {
+          if (row.problem.contest_id) {
+            return h(TagTitle, { problem: row.problem })
+          } else {
+            return row.problem.display_id + " " + row.problem.title
+          }
+        },
+      ),
+  },
+  {
+    title: () => (aiStore.detailsData.class_name ? "班级排名" : "全服排名"),
+    key: "rank",
+    width: 100,
+    align: "center",
+    render: (row) => row.rank + " / " + row.ac_count,
+  },
+  {
+    title: "等级",
+    key: "grade",
+    width: 100,
+    align: "center",
+  },
+]
+</script>

src/oj/ai/components/TagsChart.vue

@@ -1,7 +1,9 @@
 <template>
-  <div class="chart" v-if="show">
+  <n-card :title="title" size="small" v-if="show">
+    <div class="chart">
       <Pie :data="data" :options="options" />
     </div>
+  </n-card>
 </template>
 <script setup lang="ts">
 import { Pie } from "vue-chartjs"
@@ -13,24 +15,27 @@ import {
   Legend,
   Colors,
 } from "chart.js"
+import { useAIStore } from "oj/store/ai"
 
 // 仅注册饼图所需的 Chart.js 组件
 ChartJS.register(ArcElement, Title, Tooltip, Legend, Colors)
 
-const props = defineProps<{
-  tags: { [key: string]: number }
-}>()
+const aiStore = useAIStore()
 
 const show = computed(() => {
-  return Object.keys(props.tags).length > 0
+  return Object.keys(aiStore.detailsData.tags).length > 0
+})
+
+const title = computed(() => {
+  return `标签分布（前${Object.keys(aiStore.detailsData.tags).length}个）`
 })
 
 const data = computed(() => {
   return {
-    labels: Object.keys(props.tags),
+    labels: Object.keys(aiStore.detailsData.tags),
     datasets: [
       {
-        data: Object.values(props.tags),
+        data: Object.values(aiStore.detailsData.tags),
         backgroundColor: [
           "#FF6384",
           "#36A2EB",
@@ -49,15 +54,6 @@ const options = computed(() => {
       intersect: false,
     },
     maintainAspectRatio: false,
-    plugins: {
-      title: {
-        text: `题目的标签分布（前${Object.keys(props.tags).length}个）`,
-        display: true,
-        font: {
-          size: 20,
-        },
-      },
-    },
   }
 })
 </script>

src/oj/api.ts

@@ -257,8 +257,8 @@ export function getAIDetailData(start: string, end: string) {
   return http.get("ai/detail", { params: { start, end } })
 }
 
-export function getAIWeeklyData(end: string, duration: string) {
-  return http.get("ai/weekly", { params: { end, duration } })
+export function getAIDurationData(end: string, duration: string) {
+  return http.get("ai/duration", { params: { end, duration } })
 }
 
 export function getAIHeatmapData() {

src/oj/store/ai.ts

@@ -1,11 +1,11 @@
-import { DetailsData, WeeklyData } from "utils/types"
+import { DetailsData, DurationData } from "utils/types"
 import { consumeJSONEventStream } from "utils/stream"
-import { getAIDetailData, getAIWeeklyData } from "../api"
+import { getAIDetailData, getAIDurationData, getAIHeatmapData } from "../api"
 import { getCSRFToken } from "utils/functions"
 
 export const useAIStore = defineStore("ai", () => {
   const duration = ref("months:6")
-  const weeklyData = ref<WeeklyData[]>([])
+  const durationData = ref<DurationData[]>([])
   const detailsData = reactive<DetailsData>({
     start: "",
     end: "",
@@ -16,17 +16,17 @@ export const useAIStore = defineStore("ai", () => {
     contest_count: 0,
     solved: [],
   })
+  const heatmapData = ref<{ timestamp: number; value: number }[]>([])
 
   const loading = reactive({
-    details: false,
-    weekly: false,
+    fetching: false, // 合并 details 和 duration 的 loading
     ai: false,
+    heatmap: false,
   })
 
   const mdContent = ref("")
 
   async function fetchDetailsData(start: string, end: string) {
-    loading.details = true
     const res = await getAIDetailData(start, end)
     detailsData.start = res.data.start
     detailsData.end = res.data.end
@@ -36,14 +36,31 @@ export const useAIStore = defineStore("ai", () => {
     detailsData.tags = res.data.tags
     detailsData.difficulty = res.data.difficulty
     detailsData.contest_count = res.data.contest_count
-    loading.details = false
   }
 
-  async function fetchWeeklyData(end: string, duration: string) {
-    loading.weekly = true
-    const res = await getAIWeeklyData(end, duration)
-    weeklyData.value = res.data
-    loading.weekly = false
+  async function fetchDurationData(end: string, duration: string) {
+    const res = await getAIDurationData(end, duration)
+    durationData.value = res.data
+  }
+
+  async function fetchHeatmapData() {
+    loading.heatmap = true
+    const res = await getAIHeatmapData()
+    heatmapData.value = res.data
+    loading.heatmap = false
+  }
+
+  // 统一获取分析数据（details + duration）
+  async function fetchAnalysisData(start: string, end: string, duration: string) {
+    loading.fetching = true
+    try {
+      await Promise.all([
+        fetchDetailsData(start, end),
+        fetchDurationData(end, duration),
+      ])
+    } finally {
+      loading.fetching = false
+    }
   }
 
   let aiController: AbortController | null = null
@@ -72,7 +89,7 @@ export const useAIStore = defineStore("ai", () => {
         headers,
         body: JSON.stringify({
           details: detailsData,
-          weekly: weeklyData.value,
+          duration: durationData.value,
         }),
         signal: controller.signal,
       })
@@ -126,11 +143,12 @@ export const useAIStore = defineStore("ai", () => {
   }
 
   return {
-    fetchWeeklyData,
-    fetchDetailsData,
+    fetchAnalysisData,
+    fetchHeatmapData,
     fetchAIAnalysis,
-    weeklyData,
+    durationData,
     detailsData,
+    heatmapData,
     duration,
     loading,
     mdContent,

src/shared/layout/admin.vue

@@ -126,16 +126,9 @@ onMounted(async () => {
 <template>
   <n-layout has-sider position="absolute">
     <!-- 侧边栏 -->
-    <n-layout-sider
-      bordered
-      :width="100"
-      :native-scrollbar="false"
-    >
+    <n-layout-sider bordered :width="100" :native-scrollbar="false">
       <!-- 菜单 -->
-      <n-menu
-        :options="options"
-        :value="active"
-      />
+      <n-menu :options="options" :value="active" />
     </n-layout-sider>
 
     <!-- 主内容区域 -->

src/utils/types.ts

@@ -412,7 +412,7 @@ export interface Tutorial {
   created_at?: Date
 }
 
-export interface WeeklyData {
+export interface DurationData {
   unit: string
   index: number
   start: string