From 4caaf74b9fa7131d940cc35822b0154603050e25 Mon Sep 17 00:00:00 2001
From: Vadim <vadim.olonin@gmail.com>
Date: Thu, 8 Oct 2026 14:06:15 +0300
Subject: [PATCH] chart bar

---
 src/api/issue.api.ts                  |  26 ++++++
 src/components/IssueActivityChart.vue | 126 ++++++++++++++++++++++++++
 src/components/IssueStatusChart.vue   |   2 +-
 src/stores/issue.ts                   |  35 ++++++-
 src/views/HomeView.vue                |  30 +++++-
 5 files changed, 213 insertions(+), 6 deletions(-)
 create mode 100644 src/components/IssueActivityChart.vue

diff --git a/src/api/issue.api.ts b/src/api/issue.api.ts
index d885b6a..12e7e8c 100644
--- a/src/api/issue.api.ts
+++ b/src/api/issue.api.ts
@@ -47,6 +47,27 @@ export interface IssueStat {
   byStatus: IssueStatByStatus[]
 }
 
+/** Count per issue status; statuses without issues are 0 */
+export type IssueStatusCounts = Record<Issue['status'], number>
+
+export interface DailyIssueStat {
+  /** YYYY-MM-DD in the requested time zone */
+  date: string
+  /** Issues created during the day */
+  created: number
+  /** Transitions into each status during the day (creation into OPEN is not included) */
+  transitions: IssueStatusCounts
+  /** Issues in each status at the end of the day */
+  byStatus: IssueStatusCounts
+}
+
+export interface DailyIssueStats {
+  from: string
+  to: string
+  timeZone: string
+  days: DailyIssueStat[]
+}
+
 // CLIENT REQUEST
 
 export async function itemsList(params: {
@@ -89,3 +110,8 @@ export async function itemStat(projectId?: string) {
   const query = toQuery({ projectId: projectId })
   return apiClient.get<IssueStat>(`/api/issues/stats${query}`)
 }
+
+export async function itemDailyStat(params: { projectId?: string; from?: string; to?: string; timeZone?: string }) {
+  const query = toQuery(params)
+  return apiClient.get<DailyIssueStats>(`/api/issues/stats/daily${query}`)
+}
diff --git a/src/components/IssueActivityChart.vue b/src/components/IssueActivityChart.vue
new file mode 100644
index 0000000..90c43d4
--- /dev/null
+++ b/src/components/IssueActivityChart.vue
@@ -0,0 +1,126 @@
+<script setup lang="ts">
+import { computed } from 'vue'
+import { storeToRefs } from 'pinia'
+import { useTheme } from 'vuetify'
+import {
+  BarElement,
+  CategoryScale,
+  Chart as ChartJS,
+  type ChartData,
+  type ChartOptions,
+  Legend,
+  LinearScale,
+  Tooltip,
+} from 'chart.js'
+import { Bar } from 'vue-chartjs'
+import { useStatusStore } from '@/stores/status.ts'
+import type { DailyIssueStats, IssueStatusCounts } from '@/api/issue.api.ts'
+
+ChartJS.register(BarElement, CategoryScale, LinearScale, Legend, Tooltip)
+
+const FALLBACK_COLOR = '#9E9E9E'
+
+interface Props {
+  stats?: DailyIssueStats | null
+}
+
+const props = defineProps<Props>()
+
+const theme = useTheme()
+const statusStore = useStatusStore()
+
+const { statuses } = storeToRefs(statusStore)
+
+function themeColor(name: string, fallback = FALLBACK_COLOR): string {
+  const color = theme.current.value.colors[name]
+  return typeof color === 'string' ? color : fallback
+}
+
+// Vuetify generates on-* colors as short hex (#FFF / #000), so appending an alpha suffix is not enough
+function withAlpha(hex: string, alpha: number): string {
+  const value = hex.replace('#', '')
+  const full = value.length === 3 ? [...value].map((c) => c + c).join('') : value.slice(0, 6)
+  const [r, g, b] = [0, 2, 4].map((i) => parseInt(full.slice(i, i + 2), 16))
+  return `rgba(${r}, ${g}, ${b}, ${alpha})`
+}
+
+// Dates come as YYYY-MM-DD already in the user's time zone, so format them as UTC to avoid a day shift
+const dateFormat = new Intl.DateTimeFormat(undefined, { day: 'numeric', month: 'short', timeZone: 'UTC' })
+
+function formatDate(date: string) {
+  return dateFormat.format(new Date(`${date}T00:00:00Z`))
+}
+
+const days = computed(() => props.stats?.days ?? [])
+
+// One stacked bar per day: created issues at the bottom, transitions into each status on top.
+// Status order comes from the API so a status always lands on the same place in the stack
+const chartData = computed<ChartData<'bar'>>(() => ({
+  labels: days.value.map((day) => formatDate(day.date)),
+  datasets: [
+    {
+      label: 'Created',
+      data: days.value.map((day) => day.created),
+      backgroundColor: themeColor('primary'),
+    },
+    ...(statuses.value ?? []).map((status) => ({
+      label: `→ ${status.name}`,
+      data: days.value.map((day) => day.transitions[status.alias as keyof IssueStatusCounts] ?? 0),
+      backgroundColor: themeColor(status.color),
+    })),
+  ],
+}))
+
+const chartOptions = computed<ChartOptions<'bar'>>(() => {
+  // Muted axis text and grid lines derived from on-surface, so they follow the theme
+  const onSurface = themeColor('on-surface', '#000000')
+  const textColor = withAlpha(onSurface, 0.6)
+  const gridColor = withAlpha(onSurface, 0.08)
+
+  return {
+    responsive: true,
+    maintainAspectRatio: false,
+    interaction: { mode: 'index', intersect: false },
+    plugins: {
+      legend: {
+        position: 'bottom',
+        labels: { color: textColor, boxWidth: 10, boxHeight: 10 },
+      },
+      tooltip: {
+        mode: 'index',
+        intersect: false,
+        // A day usually touches only a couple of statuses — hide the empty rows
+        filter: (item) => (item.parsed.y ?? 0) > 0,
+      },
+    },
+    scales: {
+      x: {
+        stacked: true,
+        grid: { display: false },
+        ticks: { color: textColor, maxRotation: 0, autoSkip: true, autoSkipPadding: 12 },
+      },
+      y: {
+        stacked: true,
+        beginAtZero: true,
+        grid: { color: gridColor },
+        border: { display: false },
+        // Counts are integers — no 0.5 ticks on quiet periods
+        ticks: { color: textColor, precision: 0 },
+      },
+    },
+  }
+})
+</script>
+
+<template>
+  <div class="activity-chart">
+    <bar :data="chartData" :options="chartOptions" />
+  </div>
+</template>
+
+<style scoped lang="scss">
+.activity-chart {
+  position: relative;
+  height: 200px;
+}
+</style>
diff --git a/src/components/IssueStatusChart.vue b/src/components/IssueStatusChart.vue
index f35ac5d..36b659e 100644
--- a/src/components/IssueStatusChart.vue
+++ b/src/components/IssueStatusChart.vue
@@ -109,7 +109,7 @@ const chartOptions = computed<ChartOptions<'doughnut'>>(() => ({
   &__canvas {
     position: relative;
     width: 180px;
-    height: 180px;
+    height: 200px;
     flex-shrink: 0;
   }
 
diff --git a/src/stores/issue.ts b/src/stores/issue.ts
index f7b0f5c..d7d0f13 100644
--- a/src/stores/issue.ts
+++ b/src/stores/issue.ts
@@ -3,7 +3,9 @@ import { ref } from 'vue'
 import {
   type CreateIssueInput,
   type Issue,
+  type DailyIssueStats,
   itemCreate,
+  itemDailyStat,
   itemDelete,
   itemGetByKey,
   itemsList,
@@ -17,6 +19,7 @@ import {
 export const useIssueStore = defineStore('item', () => {
   const issues = ref<Issue[]>([])
   const stats = ref<IssueStat>()
+  const dailyStats = ref<DailyIssueStats>()
   const error = ref<string | null>(null)
   const lastMeta = ref<Meta>({
     page: 1,
@@ -85,5 +88,35 @@ export const useIssueStore = defineStore('item', () => {
     }
   }
 
-  return { stats, list, getByKey, create, update, remove, getStat }
+  let dailyStatsRequestId = 0
+
+  /** Stats for the last `days` days including today, in the user's local time zone */
+  async function getDailyStat(projectId?: string | null, days = 30): Promise<DailyIssueStats | undefined> {
+    // Ignore responses that arrive after the project or period has changed again
+    const requestId = ++dailyStatsRequestId
+    try {
+      const res = await itemDailyStat({
+        projectId: projectId ?? undefined,
+        from: localDateDaysAgo(days - 1),
+        // Day boundaries are computed on the backend in the user's local time zone; `to` defaults to today there
+        timeZone: Intl.DateTimeFormat().resolvedOptions().timeZone,
+      })
+      if (requestId !== dailyStatsRequestId) return
+      dailyStats.value = res
+
+      return dailyStats.value
+    } catch (e) {
+      error.value = e instanceof Error ? e.message : 'error getting daily issue stat'
+    }
+  }
+
+  return { stats, dailyStats, list, getByKey, create, update, remove, getStat, getDailyStat }
 })
+
+/** Local YYYY-MM-DD `days` days before today */
+function localDateDaysAgo(days: number): string {
+  const date = new Date()
+  date.setDate(date.getDate() - days)
+  const pad = (value: number) => String(value).padStart(2, '0')
+  return `${date.getFullYear()}-${pad(date.getMonth() + 1)}-${pad(date.getDate())}`
+}
diff --git a/src/views/HomeView.vue b/src/views/HomeView.vue
index dd9b42b..8b96060 100644
--- a/src/views/HomeView.vue
+++ b/src/views/HomeView.vue
@@ -12,9 +12,12 @@ import DashboardCountCard from '@/components/DashboardCountCard.vue'
 import LabelText from '@/components/LabelText.vue'
 import ProjectMenu from '@/components/ProjectMenu.vue'
 import IssueStatusChart from '@/components/IssueStatusChart.vue'
+import IssueActivityChart from '@/components/IssueActivityChart.vue'
 
 const ACTIVE_STATUSES: Issue['status'][] = ['OPEN', 'IN_PROGRESS']
 
+const ACTIVITY_PERIODS = [7, 30, 90]
+
 const PRIORITY_ICONS: Record<number, string> = {
   4: 'mdi-chevron-double-up',
   3: 'mdi-chevron-up',
@@ -30,7 +33,7 @@ const issueStore = useIssueStore()
 const projectStore = useProjectStore()
 const statusStore = useStatusStore()
 
-const { stats } = storeToRefs(issueStore)
+const { stats, dailyStats } = storeToRefs(issueStore)
 const { projects, current, currentProjectId } = storeToRefs(projectStore)
 
 const currentUserId = computed(() => session.value.data?.user.id ?? null)
@@ -76,6 +79,16 @@ watch(
   { immediate: true },
 )
 
+const activityDays = ref(30)
+
+watch(
+  [currentProjectId, activityDays],
+  ([id, days]) => {
+    void issueStore.getDailyStat(id, days)
+  },
+  { immediate: true },
+)
+
 function isOverdue(issue: Issue) {
   return !!issue.dueDate && new Date(issue.dueDate).getTime() < Date.now()
 }
@@ -153,9 +166,18 @@ function onClickCard(status?: string) {
           </v-card>
         </v-col>
         <v-col cols="12" md="6">
-          <!--          <v-card border>-->
-          <!--            <v-card-text>text</v-card-text>-->
-          <!--          </v-card>-->
+          <v-card border>
+            <v-card-title class="d-flex align-center justify-space-between">
+              <span>Issues activity</span>
+              <v-btn-toggle border density="comfortable" size="small" v-model="activityDays" mandatory>
+                <v-btn border="0" v-for="days in ACTIVITY_PERIODS" :key="days" :value="days">{{ days }}d</v-btn>
+              </v-btn-toggle>
+            </v-card-title>
+            <v-divider />
+            <v-card-text>
+              <issue-activity-chart :stats="dailyStats" />
+            </v-card-text>
+          </v-card>
         </v-col>
       </v-row>