From 26f0d88f5db52ebeff2298cc10188595b97f05da Mon Sep 17 00:00:00 2001
From: andrewlalis <andrewlalisofficial@gmail.com>
Date: Tue, 2 Dec 2025 20:05:40 -0500
Subject: [PATCH] Add more flexible analytics.

---
 web-app/src/pages/home/AnalyticsModule.vue    | 179 +++++++-----------
 .../home/analytics/BalanceTimeSeriesChart.vue |  95 ++++++++++
 web-app/src/pages/home/analytics/util.ts      |  11 ++
 3 files changed, 177 insertions(+), 108 deletions(-)
 create mode 100644 web-app/src/pages/home/analytics/BalanceTimeSeriesChart.vue
 create mode 100644 web-app/src/pages/home/analytics/util.ts

diff --git a/web-app/src/pages/home/AnalyticsModule.vue b/web-app/src/pages/home/AnalyticsModule.vue
index d07c2c9..e91a121 100644
--- a/web-app/src/pages/home/AnalyticsModule.vue
+++ b/web-app/src/pages/home/AnalyticsModule.vue
@@ -1,126 +1,89 @@
 <script setup lang="ts">
-import { AccountApiClient } from '@/api/account'
+import { type Account, AccountApiClient } from '@/api/account'
 import HomeModule from '@/components/HomeModule.vue'
-import {
-  CategoryScale,
-  Chart,
-  Filler,
-  Legend,
-  LinearScale,
-  LineElement,
-  PointElement,
-  TimeScale,
-  Title,
-  Tooltip,
-  type ChartData,
-  type ChartDataset,
-  type ChartOptions,
-} from 'chart.js'
-import { getTime } from 'date-fns'
-import { onMounted, ref } from 'vue'
-import { Line } from 'vue-chartjs'
+import { computed, onMounted, ref, type ComputedRef } from 'vue'
 import { useRoute } from 'vue-router'
 import 'chartjs-adapter-date-fns'
-import { integerMoneyToFloat } from '@/api/data'
-import { AnalyticsApiClient } from '@/api/analytics'
+import type { Currency } from '@/api/data'
+import { AnalyticsApiClient, type BalanceTimeSeriesAnalytics } from '@/api/analytics'
+import BalanceTimeSeriesChart from './analytics/BalanceTimeSeriesChart.vue'
+import type { TimeFrame, BalanceTimeSeries } from './analytics/util'
+import FormGroup from '@/components/common/form/FormGroup.vue'
+import FormControl from '@/components/common/form/FormControl.vue'
+import { isAfter, isBefore, startOfMonth, startOfYear, sub } from 'date-fns'
 
 const route = useRoute()
 
-const chartData = ref<ChartData<'line'> | undefined>()
-const chartOptions = ref<ChartOptions<'line'> | undefined>()
+const accounts = ref<Account[]>([])
+const balanceTimeSeriesData = ref<BalanceTimeSeriesAnalytics>()
+const currency = ref<Currency>()
+const timeFrame = ref<TimeFrame>({})
 
-Chart.register(
-  Title,
-  Tooltip,
-  Legend,
-  LineElement,
-  CategoryScale,
-  LinearScale,
-  PointElement,
-  TimeScale,
-  Filler,
-)
-
-const COLORS = [
-  [255, 69, 69],
-  [255, 160, 69],
-  [255, 223, 69],
-  [118, 255, 69],
-  [69, 255, 188],
-  [69, 237, 255],
-  [69, 125, 255],
-  [139, 69, 255],
-  [251, 69, 255],
-  [255, 69, 167],
-]
+const availableCurrencies = computed(() => {
+  const currencies: Currency[] = []
+  for (const acc of accounts.value) {
+    if (currencies.findIndex(c => c.code === acc.currency.code) === -1) {
+      currencies.push(acc.currency)
+    }
+  }
+  return currencies
+})
+const accountBalancesData: ComputedRef<BalanceTimeSeries[]> = computed(() => {
+  if (!balanceTimeSeriesData.value) return []
+  const eligibleAccounts = accounts.value.filter(a => a.currency.code === currency.value?.code)
+  const series: BalanceTimeSeries[] = []
+  for (const accountData of balanceTimeSeriesData.value.accounts) {
+    const account = eligibleAccounts.find(a => a.id === accountData.accountId)
+    if (account !== undefined) {
+      const filteredTimeSeries = accountData.balanceTimeSeries.filter(s => {
+        if (timeFrame.value.start && !isAfter(s.timestamp, timeFrame.value.start)) {
+          return false
+        }
+        if (timeFrame.value.end && !isBefore(s.timestamp, timeFrame.value.end)) {
+          return false
+        }
+        return true
+      })
+      series.push({
+        label: account.name,
+        snapshots: filteredTimeSeries
+      })
+    }
+  }
+  return series
+})
 
 onMounted(async () => {
   const api = new AccountApiClient(route)
   const analyticsApi = new AnalyticsApiClient(route)
-  const accounts = await api.getAccounts()
-  const timeSeriesData = await analyticsApi.getBalanceTimeSeries()
-  const datasets: ChartDataset<'line'>[] = []
-  // const timeZoneOffset = -(new Date().getTimezoneOffset())
-  let colorIdx = 0
-
-  for (const accountData of timeSeriesData.accounts) {
-    if (accountData.currencyCode !== 'USD') continue
-    const account = accounts.find((a) => a.id === accountData.accountId)
-    if (!account) {
-      console.warn("Couldn't find account id " + accountData.accountId)
-      continue
-    }
-
-    const color = COLORS[colorIdx++]
-    const points = accountData.balanceTimeSeries.map((p) => {
-      return {
-        x: getTime(p.timestamp),
-        y: integerMoneyToFloat(p.balance, account.currency),
-      }
-    })
-    datasets.push({
-      label: 'Account #' + account.numberSuffix,
-      data: points,
-      cubicInterpolationMode: 'monotone',
-      borderColor: `rgb(${color[0]}, ${color[1]}, ${color[2]})`,
-      backgroundColor: `rgba(${color[0]}, ${color[1]}, ${color[2]}, 0.25)`,
-      pointRadius: 0,
-      borderWidth: 2,
-      pointHoverRadius: 5,
-      pointHitRadius: 5,
-    })
-  }
-
-  chartData.value = {
-    datasets: datasets,
-  }
-  chartOptions.value = {
-    plugins: {
-      title: {
-        display: true,
-        text: 'Account Balances',
-      },
-    },
-    scales: {
-      x: {
-        type: 'time',
-        time: {
-          unit: 'day',
-        },
-      },
-    },
+  accounts.value = await api.getAccounts()
+  balanceTimeSeriesData.value = await analyticsApi.getBalanceTimeSeries()
+  if (accounts.value.length > 0) {
+    currency.value = accounts.value[0].currency
   }
 })
 </script>
 <template>
-  <HomeModule
-    title="Analytics"
-    style="min-width: 500px"
-  >
-    <Line
-      v-if="chartData && chartOptions"
-      :data="chartData"
-      :options="chartOptions"
-    />
+  <HomeModule title="Analytics">
+    <BalanceTimeSeriesChart v-if="currency && balanceTimeSeriesData" title="Account Balances" :currency="currency"
+      :time-frame="timeFrame" :data="accountBalancesData" />
+
+    <FormGroup>
+      <FormControl label="Currency">
+        <select v-model="currency" :disabled="availableCurrencies.length < 2">
+          <option v-for="currency in availableCurrencies" :key="currency.code" :value="currency">
+            {{ currency.code }}
+          </option>
+        </select>
+      </FormControl>
+      <FormControl label="Time Frame">
+        <select v-model="timeFrame">
+          <option :value="{}" selected>All Time</option>
+          <option :value="{ start: sub(new Date(), { days: 30 }) }">Last 30 days</option>
+          <option :value="{ start: startOfMonth(new Date()) }">This Month</option>
+          <option :value="{ start: startOfYear(new Date()) }">Year to Date</option>
+        </select>
+      </FormControl>
+    </FormGroup>
   </HomeModule>
 </template>
diff --git a/web-app/src/pages/home/analytics/BalanceTimeSeriesChart.vue b/web-app/src/pages/home/analytics/BalanceTimeSeriesChart.vue
new file mode 100644
index 0000000..795dea4
--- /dev/null
+++ b/web-app/src/pages/home/analytics/BalanceTimeSeriesChart.vue
@@ -0,0 +1,95 @@
+<script setup lang="ts">
+import { CategoryScale, Chart, type ChartData, type ChartDataset, type ChartOptions, Filler, Legend, LinearScale, LineElement, PointElement, TimeScale, Title, Tooltip } from 'chart.js';
+import { computed, onMounted, ref } from 'vue';
+import type { BalanceTimeSeries, TimeFrame } from './util';
+import { integerMoneyToFloat, type Currency } from '@/api/data';
+import { getTime } from 'date-fns';
+import { Line } from 'vue-chartjs';
+
+const props = defineProps<{
+  title: string,
+  timeFrame: TimeFrame,
+  currency: Currency,
+  data: BalanceTimeSeries[]
+}>()
+
+const chartData = computed(() => buildChartData())
+const chartOptions = ref<ChartOptions<'line'> | undefined>()
+
+Chart.register(
+  Title,
+  Tooltip,
+  Legend,
+  LineElement,
+  CategoryScale,
+  LinearScale,
+  PointElement,
+  TimeScale,
+  Filler
+)
+
+const COLORS = [
+  [255, 69, 69],
+  [255, 160, 69],
+  [255, 223, 69],
+  [118, 255, 69],
+  [69, 255, 188],
+  [69, 237, 255],
+  [69, 125, 255],
+  [139, 69, 255],
+  [251, 69, 255],
+  [255, 69, 167],
+]
+
+onMounted(() => {
+  chartOptions.value = {
+    plugins: {
+      title: {
+        display: true,
+        text: props.title
+      }
+    },
+    scales: {
+      x: {
+        type: 'time',
+        time: {
+          unit: 'day'
+        }
+      }
+    }
+  }
+})
+
+function buildChartData(): ChartData<'line'> {
+  const datasets: ChartDataset<'line'>[] = []
+  let colorIdx = 0
+
+  for (const series of props.data) {
+    const color = COLORS[colorIdx++]
+    if (colorIdx >= COLORS.length) colorIdx = 0
+
+    const points = series.snapshots.map((p) => {
+      return {
+        x: getTime(p.timestamp),
+        y: integerMoneyToFloat(p.balance, props.currency)
+      }
+    })
+    datasets.push({
+      label: series.label,
+      data: points,
+      cubicInterpolationMode: 'monotone',
+      borderColor: `rgb(${color[0]}, ${color[1]}, ${color[2]})`,
+      backgroundColor: `rgba(${color[0]}, ${color[1]}, ${color[2]}, 0.25)`,
+      pointRadius: 0,
+      borderWidth: 2,
+      pointHoverRadius: 5,
+      pointHitRadius: 5,
+    })
+  }
+
+  return { datasets: datasets }
+}
+</script>
+<template>
+  <Line v-if="chartData && chartOptions" :data="chartData" :options="chartOptions" />
+</template>
diff --git a/web-app/src/pages/home/analytics/util.ts b/web-app/src/pages/home/analytics/util.ts
new file mode 100644
index 0000000..4a45112
--- /dev/null
+++ b/web-app/src/pages/home/analytics/util.ts
@@ -0,0 +1,11 @@
+import type { BalanceSnapshot } from '@/api/analytics'
+
+export interface TimeFrame {
+  start?: Date
+  end?: Date
+}
+
+export interface BalanceTimeSeries {
+  label: string
+  snapshots: BalanceSnapshot[]
+}