From 849d31bc8e58122c9ddb43e9e6a98a3229188601 Mon Sep 17 00:00:00 2001
From: Jan <jan.weber@avatic.de>
Date: Tue, 9 Sep 2025 21:52:39 +0200
Subject: [PATCH] FRONTEND: Add stacked bar chart integration with error bars
 using Chart.js in `ReportChart`; include Chart.js dependency and enhance
 `ReportRoute` with updated icons

---
 src/frontend/package-lock.json                |  19 ++
 src/frontend/package.json                     |   1 +
 .../src/components/UI/ReportChart.vue         | 217 +++++++++++++++++-
 .../src/components/UI/ReportRoute.vue         |  14 +-
 4 files changed, 240 insertions(+), 11 deletions(-)

diff --git a/src/frontend/package-lock.json b/src/frontend/package-lock.json
index 15f194e..47f33bf 100644
--- a/src/frontend/package-lock.json
+++ b/src/frontend/package-lock.json
@@ -10,6 +10,7 @@
       "dependencies": {
         "@phosphor-icons/vue": "^2.2.1",
         "@vueuse/core": "^13.6.0",
+        "chart.js": "^4.5.0",
         "loglevel": "^1.9.2",
         "pinia": "^3.0.3",
         "vue": "^3.5.18",
@@ -973,6 +974,12 @@
         "@jridgewell/sourcemap-codec": "^1.4.14"
       }
     },
+    "node_modules/@kurkle/color": {
+      "version": "0.3.4",
+      "resolved": "https://registry.npmjs.org/@kurkle/color/-/color-0.3.4.tgz",
+      "integrity": "sha512-M5UknZPHRu3DEDWoipU6sE8PdkZ6Z/S+v4dD+Ke8IaNlpdSQah50lz1KtcFBa2vsdOnwbbnxJwVM4wty6udA5w==",
+      "license": "MIT"
+    },
     "node_modules/@phosphor-icons/vue": {
       "version": "2.2.1",
       "resolved": "https://registry.npmjs.org/@phosphor-icons/vue/-/vue-2.2.1.tgz",
@@ -1719,6 +1726,18 @@
       ],
       "license": "CC-BY-4.0"
     },
+    "node_modules/chart.js": {
+      "version": "4.5.0",
+      "resolved": "https://registry.npmjs.org/chart.js/-/chart.js-4.5.0.tgz",
+      "integrity": "sha512-aYeC/jDgSEx8SHWZvANYMioYMZ2KX02W6f6uVfyteuCGcadDLcYVHdfdygsTQkQ4TKn5lghoojAsPj5pu0SnvQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@kurkle/color": "^0.3.0"
+      },
+      "engines": {
+        "pnpm": ">=8"
+      }
+    },
     "node_modules/convert-source-map": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/convert-source-map/-/convert-source-map-2.0.0.tgz",
diff --git a/src/frontend/package.json b/src/frontend/package.json
index 88df4dd..b63c4c4 100644
--- a/src/frontend/package.json
+++ b/src/frontend/package.json
@@ -14,6 +14,7 @@
   "dependencies": {
     "@phosphor-icons/vue": "^2.2.1",
     "@vueuse/core": "^13.6.0",
+    "chart.js": "^4.5.0",
     "loglevel": "^1.9.2",
     "pinia": "^3.0.3",
     "vue": "^3.5.18",
diff --git a/src/frontend/src/components/UI/ReportChart.vue b/src/frontend/src/components/UI/ReportChart.vue
index a6c8902..2a93ad2 100644
--- a/src/frontend/src/components/UI/ReportChart.vue
+++ b/src/frontend/src/components/UI/ReportChart.vue
@@ -1,15 +1,216 @@
-<script lang="ts">
-import {defineComponent} from 'vue'
+<template>
+  <div class="chart-container">
+    <canvas ref="stackedBarChart"></canvas>
+  </div>
+</template>
 
-export default defineComponent({
-  name: "ReportChart"
-})
+<script>
+
+import {
+  Chart as ChartJS,
+  CategoryScale,
+  LinearScale,
+  BarElement,
+  BarController,
+  ScatterController,
+  Title,
+  Tooltip,
+  Legend,
+  PointElement
+} from 'chart.js';
+
+// Register the required components
+ChartJS.register(
+    CategoryScale,
+    LinearScale,
+    BarElement,
+    BarController,
+    ScatterController,
+    Title,
+    Tooltip,
+    Legend,
+    PointElement
+);
+
+export default {
+  name: "ReportChart",
+  computed: {
+
+  },
+  data() {
+    return {
+      data: {
+        labels: ['Sample A'],
+        datasets: [
+          {
+            label: 'MEK A',
+            data: [35],
+            backgroundColor: '#6B869C', // Blue-gray like in your image
+            borderColor: '#6B869C',
+            borderWidth: 1,
+            stack: 'stack1'
+          },
+          {
+            label: 'Logistics costs',
+            data: [15],
+            backgroundColor: '#5AF0B4', // Mint green like in your image
+            borderColor: '#5AF0B4',
+            borderWidth: 1,
+            stack: 'stack1'
+          },
+          {
+            label: 'Error Bars',
+
+            // data: [50, 65, 58, 75], // Total height (used for error bar positioning)
+            type: 'scatter',
+            backgroundColor: 'transparent',
+            borderColor: 'transparent',
+            pointRadius: 0,
+            showLine: false,
+            stack: 'errorBars',
+            errorBars: {
+              plus: [5], // Upper error
+              minus: [4]  // Lower error
+            }
+          }
+        ]
+      }
+
+    }
+  },
+  mounted() {
+    const ctx = this.$refs.stackedBarChart.getContext('2d');
+
+    // Sample data
+    const data = this.data;
+
+    const config = {
+      type: 'bar',
+      data: data,
+      options: {
+        responsive: true,
+        maintainAspectRatio: false,
+        scales: {
+          x: {
+            stacked: true,
+            grid: {
+              display: false
+            },
+            ticks: {
+              display: false //this will remove only the label
+            },
+            border: {
+              display: false
+            }
+          },
+          y: {
+            stacked: true, // Don't stack for error bars
+            beginAtZero: true,
+            max: 90,
+            grid: {
+              color: '#E3EDFF'
+            },
+            ticks: {
+              display: false //this will remove only the label
+            },
+            border: {
+              display: false
+            }
+          },
+
+        },
+        plugins: {
+          legend: {
+            display: false,
+            labels: {
+              filter: function (item, chart) {
+                // Hide the error bars dataset from legend
+                return item.text !== 'Error Bars';
+              }
+            }
+          },
+          tooltip: {
+            filter: function (tooltipItem) {
+              // Don't show tooltip for error bars dataset
+              return tooltipItem.datasetIndex !== 2;
+            }
+          }
+        },
+        animation: {
+          onComplete: function () {
+            // Draw error bars after animation completes
+            drawErrorBars(this);
+          }
+        }
+      },
+      plugins: [{
+        afterDraw: function (chart) {
+          drawErrorBars(chart);
+        }
+      }]
+    };
+
+    function drawErrorBars(chart) {
+      const ctx = chart.ctx;
+      const meta = chart.getDatasetMeta(0); // Get metadata for first dataset
+      const errorData = chart.data.datasets[2].errorBars;
+
+      if (!errorData) return;
+
+      ctx.strokeStyle = '#002F54';
+      ctx.lineWidth = 1;
+
+      meta.data.forEach((bar, index) => {
+        const x = bar.x;
+
+        // Calculate the top of the stacked bar (this is the center point for error bars)
+        const topValue = chart.data.datasets[0].data[index] + chart.data.datasets[1].data[index];
+        const yCenterPixel = chart.scales.y.getPixelForValue(topValue);
+
+        // Error bar measurements
+        const errorUp = errorData.plus[index];
+        const errorDown = errorData.minus[index];
+
+        // Convert error values to pixel distances
+        const errorUpPixels = chart.scales.y.getPixelForValue(topValue) - chart.scales.y.getPixelForValue(topValue + errorUp);
+        const errorDownPixels = chart.scales.y.getPixelForValue(topValue - errorDown) - chart.scales.y.getPixelForValue(topValue);
+
+        const yErrorTop = yCenterPixel - errorUpPixels;
+        const yErrorBottom = yCenterPixel + errorDownPixels;
+
+        // Draw vertical line
+        ctx.beginPath();
+        ctx.moveTo(x, yErrorTop);
+        ctx.lineTo(x, yErrorBottom);
+        ctx.stroke();
+
+        // Draw top cap
+        ctx.beginPath();
+        ctx.moveTo(x - 8, yErrorTop);
+        ctx.lineTo(x + 8, yErrorTop);
+        ctx.stroke();
+
+        // Draw bottom cap
+        ctx.beginPath();
+        ctx.moveTo(x - 8, yErrorBottom);
+        ctx.lineTo(x + 8, yErrorBottom);
+        ctx.stroke();
+      });
+    }
+
+    // Create the chart
+    const stackedBarChart = new ChartJS(ctx, config);
+  }
+}
 </script>
 
-<template>
-
-</template>
 
 <style scoped>
 
+
+.chart-container {
+  position: relative;
+  height: 300px;
+}
+
 </style>
\ No newline at end of file
diff --git a/src/frontend/src/components/UI/ReportRoute.vue b/src/frontend/src/components/UI/ReportRoute.vue
index 3e0403a..be14ef1 100644
--- a/src/frontend/src/components/UI/ReportRoute.vue
+++ b/src/frontend/src/components/UI/ReportRoute.vue
@@ -16,7 +16,7 @@
                       v-if="section.transport_type === 'ROAD' || section.transport_type === 'POST_RUN'"></ph-truck>
 
             <div>
-              {{ section.from_node.external_mapping_id ?? section.from_node.name }} >
+              {{ section.from_node.external_mapping_id ?? section.from_node.name }} <PhArrowRight  :size="12" weight="bold" />
               {{ section.to_node.external_mapping_id ?? section.to_node.name }}
             </div>
           </div>
@@ -40,11 +40,19 @@
 </template>
 
 <script>
-import {PhBoat, PhTrain, PhTruck, PhTruckTrailer} from "@phosphor-icons/vue";
+import {
+  PhArrowRight,
+  PhBoat,
+  PhCaretDoubleRight,
+  PhCaretRight,
+  PhTrain,
+  PhTruck,
+  PhTruckTrailer
+} from "@phosphor-icons/vue";
 
 export default {
   name: 'ReportRoute',
-  components: {PhTruck, PhTruckTrailer, PhTrain, PhBoat},
+  components: {PhArrowRight, PhCaretDoubleRight, PhCaretRight, PhTruck, PhTruckTrailer, PhTrain, PhBoat},
   props: {
     sections: {
       type: Array,