Refactor CI/CD analytics page to GraphQL

What does this MR do?

This refactors the Analytics -> CI/CD page to use GraphQL instead of sending the data via DOM attributes, per our OKR of reducing the LCP (Largest Content Paint) across GitLab. All of the changes are set behind the :graphql_pipeline_analytics feature flag

#285147 (closed)

Rollout issue for this feature change is in:

#290153 (closed)

You can try this feature change locally by accessing the rails console and issuing the following command

Feature.enable(:graphql_pipeline_analytics)

Screenshots (strongly suggested)

No visual changes, only some of the frontend logic as to how some data is requested has been changed, plus the necessary backend to make the changes possible

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• [-] Separation of EE specific content

app/assets/javascripts/projects/pipelines/charts/components/app_graphql.vue

+<script>
+import dateFormat from 'dateformat';
+import { GlColumnChart } from '@gitlab/ui/dist/charts';
+import { __, sprintf } from '~/locale';
+import { getDateInPast } from '~/lib/utils/datetime_utility';
+import getPipelineCountByStatus from '../graphql/queries/get_pipeline_count_by_status.query.graphql';
+import getProjectPipelineStatistics from '../graphql/queries/get_project_pipeline_statistics.query.graphql';
+import StatisticsList from './statistics_list.vue';
+import PipelinesAreaChart from './pipelines_area_chart.vue';
+import {
+  CHART_CONTAINER_HEIGHT,
+  INNER_CHART_HEIGHT,
+  X_AXIS_LABEL_ROTATION,
+  X_AXIS_TITLE_OFFSET,
+  CHART_DATE_FORMAT,
+  ONE_WEEK_AGO_DAYS,
+  ONE_MONTH_AGO_DAYS,
+} from '../constants';
+
+export default {
+  components: {
+    GlColumnChart,
+    StatisticsList,
+    PipelinesAreaChart,
+  },
+  inject: {
+    projectPath: {
+      type: String,
+      default: '',
+    },
+  },
+  data() {
+    return {
+      counts: {},
+      analytics: {},
+    };
+  },
+  apollo: {
+    counts: {
+      query: getPipelineCountByStatus,
+      variables() {
+        return {
+          projectPath: this.projectPath,
+        };
+      },
+      update(res) {
+        return res.project;
+      },
+    },
+    analytics: {
+      query: getProjectPipelineStatistics,
+      variables() {
+        return {
+          projectPath: this.projectPath,
+        };
+      },
+      update(res) {
+        return res.project.pipelineAnalytics;
+      },
+    },
+  },
+  computed: {
+    successRatio() {
+      const { successfulPipelines, failedPipelines } = this.counts;
+      const ratio = (successfulPipelines / (successfulPipelines + failedPipelines)) * 100;
+
+      return failedPipelines === 0 ? 100 : ratio;
+    },
+    formattedCounts() {
+      const {
+        totalPipelines,
+        successfulPipelines,
+        failedPipelines,
+        totalPipelineDuration,
+      } = this.counts;
+
+      return {
+        total: totalPipelines?.count || 0,
+        success: successfulPipelines?.count || 0,
+        failed: failedPipelines?.count || 0,
+        successRatio: this.successRatio,
+        totalDuration: totalPipelineDuration || 0,
+      };
+    },
+    areaCharts() {
+      const { lastWeek, lastMonth, lastYear } = this.$options.chartTitles;
+
+      return [
+        this.buildAreaChartData(lastWeek, this.lastWeekChartData),
+        this.buildAreaChartData(lastMonth, this.lastMonthChartData),
+        this.buildAreaChartData(lastYear, this.lastYearChartData),
+      ];
+    },
+    lastWeekChartData() {
+      return {
+        labels: this.analytics.weekPipelinesLabels,
+        totals: this.analytics.weekPipelinesTotal,
+        success: this.analytics.weekSuccessfulPipelines,
+      };
+    },
+    lastMonthChartData() {
+      return {
+        labels: this.analytics.monthPipelinesLabels,
+        totals: this.analytics.monthPipelinesTotal,
+        success: this.analytics.monthSuccessfulPipelines,
+      };
+    },
+    lastYearChartData() {
+      return {
+        labels: this.analytics.yearPipelinesLabels,
+        totals: this.analytics.yearPipelinesTotal,
+        success: this.analytics.yearSuccessfulPipelines,
+      };
+    },
+    timesChartTransformedData() {
+      return [
+        {
+          name: 'full',
+          data: this.mergeLabelsAndValues(
+            this.analytics.pipelineTimesLabels,
+            this.analytics.pipelineTimesValues,
+          ),
+        },
+      ];
+    },
+  },
+  methods: {
+    mergeLabelsAndValues(labels, values) {
+      return labels.map((label, index) => [label, values[index]]);
+    },
+    buildAreaChartData(title, data) {
+      const { labels, totals, success } = data;
+
+      return {
+        title,
+        data: [
+          {
+            name: 'all',
+            data: this.mergeLabelsAndValues(labels, totals),
+          },
+          {
+            name: 'success',
+            data: this.mergeLabelsAndValues(labels, success),
+          },
+        ],
+      };
+    },
+  },
+  chartContainerHeight: CHART_CONTAINER_HEIGHT,
+  timesChartOptions: {
+    height: INNER_CHART_HEIGHT,
+    xAxis: {
+      axisLabel: {
+        rotate: X_AXIS_LABEL_ROTATION,
+      },
+      nameGap: X_AXIS_TITLE_OFFSET,
+    },
+  },
+  get chartTitles() {
+    const today = dateFormat(new Date(), CHART_DATE_FORMAT);
+    const pastDate = timeScale =>
+      dateFormat(getDateInPast(new Date(), timeScale), CHART_DATE_FORMAT);
+    return {
+      lastWeek: sprintf(__('Pipelines for last week (%{oneWeekAgo} - %{today})'), {
+        oneWeekAgo: pastDate(ONE_WEEK_AGO_DAYS),
+        today,
+      }),
+      lastMonth: sprintf(__('Pipelines for last month (%{oneMonthAgo} - %{today})'), {
+        oneMonthAgo: pastDate(ONE_MONTH_AGO_DAYS),
+        today,
+      }),
+      lastYear: __('Pipelines for last year'),
+    };
+  },
+};
+</script>
+<template>
+  <div>
+    <div class="mb-3">
+      <h3>{{ s__('PipelineCharts|CI / CD Analytics') }}</h3>
+    </div>
+    <h4 class="my-4">{{ s__('PipelineCharts|Overall statistics') }}</h4>
+    <div class="row">
+      <div class="col-md-6">
+        <statistics-list :counts="formattedCounts" />
+      </div>
+      <div class="col-md-6">
+        <strong>
+          {{ __('Duration for the last 30 commits') }}
+        </strong>
+        <gl-column-chart
+          :height="$options.chartContainerHeight"
+          :option="$options.timesChartOptions"
+          :bars="timesChartTransformedData"
+          :y-axis-title="__('Minutes')"
+          :x-axis-title="__('Commit')"
+          x-axis-type="category"
+        />
+      </div>
+    </div>
+    <hr />
+    <h4 class="my-4">{{ __('Pipelines charts') }}</h4>
+    <pipelines-area-chart
+      v-for="(chart, index) in areaCharts"
+      :key="index"
+      :chart-data="chart.data"
+    >
+      {{ chart.title }}
+    </pipelines-area-chart>
+  </div>
+</template>