From 9e9bcdde4fa427f5afe8fd6709c1828592ea9579 Mon Sep 17 00:00:00 2001
From: Hayden <64056131+hay-kot@users.noreply.github.com>
Date: Mon, 5 Dec 2022 12:38:08 -0900
Subject: [PATCH] wip: charts.js experimental work

---
 frontend/components/Chart/Donut.vue | 94 ++++++++++++++++++++++++++++
 frontend/components/Chart/Line.vue  | 96 +++++++++++++++++++++++++++++
 frontend/composables/use-css-var.ts | 38 ++++++++++++
 frontend/package.json               |  4 +-
 frontend/pages/home.vue             | 77 ++++++++++++++++++++++-
 5 files changed, 307 insertions(+), 2 deletions(-)
 create mode 100644 frontend/components/Chart/Donut.vue
 create mode 100644 frontend/components/Chart/Line.vue
 create mode 100644 frontend/composables/use-css-var.ts

diff --git a/frontend/components/Chart/Donut.vue b/frontend/components/Chart/Donut.vue
new file mode 100644
index 0000000..97d4113
--- /dev/null
+++ b/frontend/components/Chart/Donut.vue
@@ -0,0 +1,94 @@
+<template>
+  <DoughnutChart
+    :chart-options="chartOptions"
+    :chart-data="chartData"
+    :chart-id="chartId"
+    :dataset-id-key="datasetIdKey"
+    :css-classes="cssClasses"
+    :styles="styles"
+    :width="width"
+    :height="height"
+  />
+</template>
+
+<script lang="ts">
+  import { Doughnut as DoughnutChart } from "vue-chartjs";
+  import { Chart as ChartJS, Title, Tooltip, Legend, CategoryScale, LinearScale, ArcElement } from "chart.js";
+  import { TChartData } from "vue-chartjs/dist/types";
+
+  ChartJS.register(Title, Tooltip, Legend, CategoryScale, LinearScale, ArcElement);
+
+  export default defineComponent({
+    name: "BarChart",
+    components: {
+      DoughnutChart,
+    },
+    props: {
+      chartId: {
+        type: String,
+        default: "bar-chart",
+      },
+      datasetIdKey: {
+        type: String,
+        default: "label",
+      },
+      width: {
+        type: Number,
+        default: 400,
+      },
+      height: {
+        type: Number,
+        default: 400,
+      },
+      cssClasses: {
+        default: "",
+        type: String,
+      },
+      styles: {
+        type: Object,
+        default: () => {
+          return {};
+        },
+      },
+      chartData: {
+        type: Object as () => TChartData<"doughnut", number[], unknown>,
+        default: () => {
+          return {
+            labels: ["Red", "Blue", "Yellow"],
+            datasets: [
+              {
+                label: "My First Dataset",
+                data: [300, 50, 100],
+                backgroundColor: ["rgb(255, 99, 132)", "rgb(54, 162, 235)", "rgb(255, 205, 86)"],
+                hoverOffset: 4,
+              },
+            ],
+          };
+        },
+      },
+    },
+    data() {
+      return {
+        chartOptions: {
+          responsive: false,
+          // Legend on the left
+          plugins: {
+            legend: {
+              position: "bottom",
+            },
+            // Display percentage
+            // tooltip: {
+            //   callbacks: {
+            //     label: context => {
+            //       const label = context.dataset?.label || "";
+            //       const value = context.parsed.y;
+            //       return `${label}: ${value}%`;
+            //     },
+            //   },
+            // },
+          },
+        },
+      };
+    },
+  });
+</script>
diff --git a/frontend/components/Chart/Line.vue b/frontend/components/Chart/Line.vue
new file mode 100644
index 0000000..014f20c
--- /dev/null
+++ b/frontend/components/Chart/Line.vue
@@ -0,0 +1,96 @@
+<template>
+  <LineChart
+    :chart-options="chartOptions"
+    :chart-data="chartData"
+    :chart-id="chartId"
+    :dataset-id-key="datasetIdKey"
+    :css-classes="cssClasses"
+    :styles="styles"
+    :width="width"
+    :height="height"
+  />
+</template>
+
+<script lang="ts">
+  import { Line as LineChart } from "vue-chartjs";
+  import {
+    Chart as ChartJS,
+    PointElement,
+    Title,
+    Tooltip,
+    Legend,
+    CategoryScale,
+    LinearScale,
+    LineElement,
+  } from "chart.js";
+  import { TChartData } from "vue-chartjs/dist/types";
+
+  ChartJS.register(Title, Tooltip, Legend, CategoryScale, LinearScale, PointElement, LineElement);
+
+  export default defineComponent({
+    name: "BarChart",
+    components: {
+      LineChart,
+    },
+    props: {
+      chartId: {
+        type: String,
+        default: "bar-chart",
+      },
+      datasetIdKey: {
+        type: String,
+        default: "label",
+      },
+      width: {
+        type: Number,
+        default: 400,
+      },
+      height: {
+        type: Number,
+        default: 400,
+      },
+      cssClasses: {
+        default: "",
+        type: String,
+      },
+      styles: {
+        type: Object,
+        default: () => {
+          return {};
+        },
+      },
+      chartData: {
+        type: Object as () => TChartData<"line", number[], unknown>,
+        default: () => {
+          return {
+            labels: ["January", "February", "March"],
+            datasets: [{ data: [40, 20, 12] }],
+          };
+        },
+      },
+    },
+    data() {
+      return {
+        chartOptions: {
+          responsive: true,
+          scales: {
+            x: {
+              display: false,
+            },
+            y: {
+              display: true,
+            },
+          },
+          elements: {
+            line: {
+              borderWidth: 5,
+            },
+            point: {
+              radius: 4,
+            },
+          },
+        },
+      };
+    },
+  });
+</script>
diff --git a/frontend/composables/use-css-var.ts b/frontend/composables/use-css-var.ts
new file mode 100644
index 0000000..c92e1e9
--- /dev/null
+++ b/frontend/composables/use-css-var.ts
@@ -0,0 +1,38 @@
+import { ComputedRef } from "vue";
+
+type ColorType = "hsla";
+
+export type VarOptions = {
+  type: ColorType;
+  transparency?: number;
+  apply?: (value: string) => string;
+};
+
+export function useCssVar(name: string, options?: VarOptions): ComputedRef<string> {
+  if (!options) {
+    options = {
+      type: "hsla",
+      transparency: 1,
+      apply: null,
+    };
+  }
+
+  switch (options.type) {
+    case "hsla": {
+      return computed(() => {
+        if (!document) {
+          return "";
+        }
+
+        let val = getComputedStyle(document.documentElement).getPropertyValue(name);
+        val = val.trim().split(" ").join(", ");
+
+        if (options.transparency) {
+          val += `, ${options.transparency}`;
+        }
+
+        return `hsla(${val})`;
+      });
+    }
+  }
+}
diff --git a/frontend/package.json b/frontend/package.json
index 973e383..93ca2a2 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -36,12 +36,14 @@
     "@tailwindcss/typography": "^0.5.4",
     "@vueuse/nuxt": "^9.1.1",
     "autoprefixer": "^10.4.8",
+    "chart.js": "^4.0.1",
     "daisyui": "^2.24.0",
     "dompurify": "^2.4.1",
     "markdown-it": "^13.0.1",
     "pinia": "^2.0.21",
     "postcss": "^8.4.16",
     "tailwindcss": "^3.1.8",
-    "vue": "^3.2.38"
+    "vue": "^3.2.38",
+    "vue-chartjs": "^4.1.2"
   }
 }
\ No newline at end of file
diff --git a/frontend/pages/home.vue b/frontend/pages/home.vue
index e8a52e7..ea93771 100644
--- a/frontend/pages/home.vue
+++ b/frontend/pages/home.vue
@@ -6,7 +6,6 @@
   definePageMeta({
     middleware: ["auth"],
   });
-
   useHead({
     title: "Homebox | Home",
   });
@@ -87,6 +86,63 @@
 
     eventBus.emit(EventTypes.ClearStores);
   }
+
+  const { data: timeseries } = useAsyncData(async () => {
+    const { data } = await api.stats.totalPriceOverTime();
+    return data;
+  });
+
+  const primary = useCssVar("--p");
+  const secondary = useCssVar("--s");
+  const accent = useCssVar("--a");
+  const neutral = useCssVar("--n");
+  const base = useCssVar("--b");
+
+  const chartData = computed(() => {
+    let start = timeseries.value?.valueAtStart;
+
+    return {
+      labels: timeseries?.value.entries.map(t => new Date(t.date).toDateString()) || [],
+      datasets: [
+        {
+          label: "Purchase Price",
+          data:
+            timeseries.value?.entries.map(t => {
+              start += t.value;
+              return start;
+            }) || [],
+          backgroundColor: primary.value,
+          borderColor: primary.value,
+        },
+      ],
+    };
+  });
+
+  const { data: donutSeries } = useAsyncData(async () => {
+    const { data } = await api.stats.locations();
+    return data;
+  });
+
+  const donutData = computed(() => {
+    return {
+      labels: donutSeries.value?.map(l => l.name) || [],
+      datasets: [
+        {
+          label: "Value",
+          data: donutSeries.value?.map(l => l.total) || [],
+          backgroundColor: [primary.value, secondary.value, neutral.value],
+          borderColor: [primary.value, secondary.value, neutral.value],
+          hoverOffset: 4,
+        },
+      ],
+    };
+  });
+
+  const refDonutEl = ref<HTMLDivElement>(null);
+
+  const donutElWidth = computed(() => {
+    return refDonutEl.value?.clientWidth || 0;
+  });
 </script>
 
 <template>
@@ -148,6 +204,25 @@
         </BaseCard>
       </section>
 
+      <section v-if="timeseries" class="grid grid-cols-6 gap-6">
+        <BaseCard class="col-span-4">
+          <template #title>Total Asset Value {{ fmtCurrency(timeseries.valueAtEnd) }}</template>
+          <div class="p-6 pt-0">
+            <ClientOnly>
+              <ChartLine chart-id="asd" :height="200" :chart-data="chartData" />
+            </ClientOnly>
+          </div>
+        </BaseCard>
+        <BaseCard class="col-span-2">
+          <template #title> Asset By Location {{ fmtCurrency(timeseries.valueAtEnd) }}</template>
+          <div ref="refDonutEl" class="grid place-content-center h-full">
+            <ClientOnly>
+              <ChartDonut chart-id="donut" :width="donutElWidth - 50" :height="300" :chart-data="donutData" />
+            </ClientOnly>
+          </div>
+        </BaseCard>
+      </section>
+
       <section>
         <BaseSectionHeader class="mb-5"> Storage Locations </BaseSectionHeader>
         <div class="grid grid-cols-1 sm:grid-cols-2 card md:grid-cols-3 gap-4">