From 7fc167505290b76db1d81e27aeca89d64598d112 Mon Sep 17 00:00:00 2001
From: Bertrand Benjamin <benjamin.bertrand@opytex.org>
Date: Sun, 27 Jan 2019 07:18:50 +0100
Subject: [PATCH] Feat(home): over time tag spending comparison

---
 src/components/charjs_line.vue | 17 +++++++
 src/components/graph_time.vue  | 85 +++++++++++++++++++++++++++++++++
 src/libs/data_processing.js    | 44 ++++++++++++++++-
 src/store/modules/datas.js     | 41 ++++++++--------
 src/views/home.vue             | 87 ++++++++++++++++++----------------
 5 files changed, 213 insertions(+), 61 deletions(-)
 create mode 100644 src/components/charjs_line.vue
 create mode 100644 src/components/graph_time.vue

diff --git a/src/components/charjs_line.vue b/src/components/charjs_line.vue
new file mode 100644
index 0000000..0bf2a20
--- /dev/null
+++ b/src/components/charjs_line.vue
@@ -0,0 +1,17 @@
+<script>
+import { Line, mixins } from 'vue-chartjs'
+const { reactiveProp } = mixins
+
+export default {
+  name: 'chartline',
+  extends: Line,
+  mixins: [reactiveProp],
+  props: ['chartData', 'options'],
+  mounted () {
+    this.renderChart(this.chartData, this.options)
+  }
+}
+</script>
+
+<style scope>
+</style>
diff --git a/src/components/graph_time.vue b/src/components/graph_time.vue
new file mode 100644
index 0000000..0dd98cc
--- /dev/null
+++ b/src/components/graph_time.vue
@@ -0,0 +1,85 @@
+<template>
+  <div class="container">
+    <chartline :chart-data="datasets" :options="options" v-if="datasets[0] !== 0"></chartline>
+  </div>
+</template>
+
+<script>
+import moment from 'moment'
+import chartline from './charjs_line'
+import { mapGetters } from 'vuex'
+import { total, groupBy } from '../libs/data_processing'
+
+export default {
+  name: 'graphTime',
+  components: {
+    'chartline': chartline
+  },
+  data () {
+    return {
+      selected_tags: [
+        'virements',
+        'cash',
+        'autoroute',
+        'train',
+        'essence',
+        'courses',
+        'sans tags'
+      ],
+      options: {
+        responsive: true,
+        maintainAspectRatio: false,
+        legend: {
+          position: 'left'
+        }
+      }
+    }
+  },
+  computed: {
+    ...mapGetters('datas', {
+      'months': 'months',
+      'tag_filter_rows': 'tag_filter_rows'
+    }),
+    ...mapGetters('config', [
+      'tag'
+    ]),
+    datasets () {
+      var datas = []
+      this.selected_tags.forEach(t => {
+        var rows = []
+        if (t === 'sans tags') {
+          rows = this.tag_filter_rows([], true, false)
+          console.log(rows)
+        } else {
+          rows = this.tag_filter_rows([t], false, false)
+        }
+        var dateGrouped = groupBy(rows,
+          row => moment(row.Date).format('MMMM YYYY'),
+          total)
+        datas.push({
+          label: t,
+          borderColor: (this.tag(t) ? this.tag(t).color : '#A9A9A9'),
+          data: this.months.map(month => {
+            return (dateGrouped[month] ? dateGrouped[month] : 0)
+          }),
+          fill: false
+        })
+      })
+      return {
+        labels: this.months,
+        datasets: datas
+      }
+    }
+  },
+  methods: {
+  }
+}
+
+</script>
+
+<style scope>
+.container {
+  position: relative;
+  height: 420px;
+}
+</style>
diff --git a/src/libs/data_processing.js b/src/libs/data_processing.js
index cf66b11..ccb7e16 100644
--- a/src/libs/data_processing.js
+++ b/src/libs/data_processing.js
@@ -29,8 +29,48 @@ export function formatDate (row, field = 'Date') {
   row[field] = moment(row[field], 'DD/MM/YYYY', true)
 }
 
-export function total (row, field = 'Montant') {
-  var sum = row.map(x => parseFloat(x[field]))
+export function total (rows, field = 'Montant') {
+  var sum = rows.map(x => parseFloat(x[field]))
     .reduce((sum, x) => sum + x, 0)
   return Math.round(sum)
 }
+
+export function tag_filter (rows, tags, invert=false) {
+  // filter rows by tags
+  // invert inverts the selection
+  return rows.filter(row => {
+    if (invert) {
+      return tags.some(t => {
+        return row.tags.map(t => t.name.toLowerCase())
+          .indexOf(t.toLowerCase()) < 0
+      })
+    } else {
+      return tags.every(t => {
+        return row.tags.map(t => t.name.toLowerCase())
+          .indexOf(t.toLowerCase()) > -1
+      })
+    }
+  })
+}
+
+function objectMap (object, mapFn) {
+  // map a function on object value
+  return Object.keys(object).reduce(function(result, key) {
+    result[key] = mapFn(object[key])
+    return result
+  }, {})
+}
+
+export function groupBy (rows, grouping, agg) {
+  // Group rows by field then apply agg
+  var groups = rows.reduce((stock, row) => {
+    var group = grouping(row)
+    if (stock[group]) {
+      stock[group].push(row)
+    } else {
+      stock[group] = [row]
+    }
+    return stock
+  }, {})
+  return objectMap(groups, group => agg(group))
+}
diff --git a/src/store/modules/datas.js b/src/store/modules/datas.js
index 3eb8250..de99c4c 100644
--- a/src/store/modules/datas.js
+++ b/src/store/modules/datas.js
@@ -3,7 +3,7 @@ import Vue from 'vue'
 import path from 'path'
 import Papa from 'papaparse'
 import moment from 'moment'
-import { appendTag, formatDate } from '../../libs/data_processing'
+import { appendTag, formatDate, tag_filter } from '../../libs/data_processing'
 
 export default {
   namespaced: true,
@@ -57,27 +57,25 @@ export default {
         return moment(x.Date).isSame(state.month, 'month')
       })
     },
-    tag_filter_rows: (state, getters) => (tags, invert) => {
-      // return rows filtered by date then by tags
-      if (tags) {
-        return getters.date_filter_rows.filter(row => {
-          if (invert) {
-            return tags.some(t => {
-              return row.tags.map(t => t.name.toLowerCase())
-                .indexOf(t.toLowerCase()) < 0
-            })
-          } else {
-            return tags.every(t => {
-              return row.tags.map(t => t.name.toLowerCase())
-                .indexOf(t.toLowerCase()) > -1
-            })
-          }
-        })
+    tag_filter_rows: (state, getters) => (tags, invert, dateFilter = true) => {
+      // return rows filtered by tags
+      // by default it filters rows by date
+      // to disable date filtering set date_filter to false
+      var rows
+      if (dateFilter) {
+        rows = getters.date_filter_rows
+      } else {
+        rows = getters.spending_rows
+      }
+      if (tags.length > 0) {
+        return tag_filter(rows, tags, invert)
       } else {
         if (invert) {
-          return []
+          return rows.filter(r => {
+            return r.tags.map(t => t.name.toLowerCase()).toString() === ["cb"].toString()
+          })
         } else {
-          return getters.date_filter_rows
+          return rows
         }
       }
     },
@@ -99,7 +97,12 @@ export default {
           })
         })
       }
+    },
+    months: (state, getters) => {
+      // Set of month
+      return [... new Set(getters.rows.map(x => moment(x.Date).format('MMMM YYYY')))]
     }
+
   },
   mutations: {
     CLEAR_DATA: (state) => {
diff --git a/src/views/home.vue b/src/views/home.vue
index ef5c80b..0015de0 100644
--- a/src/views/home.vue
+++ b/src/views/home.vue
@@ -2,50 +2,54 @@
   <div class="import">
     <h1>Analyse</h1>
     <div class="analysis" v-if="datas_present">
-      <b-container fluid>
-        <b-row class="date-selector">
-            <b-button @click="prev_month" variant="link">
-                <font-awesome-icon icon="angle-left" class="fa" />
-            </b-button>
-            <span class="text-muted btn" disabled="true">
-            {{ month.format('MMMM YYYY') }}
-            </span>
-            <b-button @click="next_month" variant="link">
-                <font-awesome-icon icon="angle-right" class="fa" />
-            </b-button>
-        </b-row>
-      </b-container>
+        <h2> Sur le temps </h2>
+        <graph-time></graph-time>
 
-      <b-card-group deck class="mb-3">
-        <box @click.native="set_tags_filter([])"></box>
-        <box @click.native="set_tags_filter(['cash'])" tagname="cash"></box>
-        <box @click.native="set_tags_filter(['cb'])" tagname="cb"></box>
-        <box @click.native="set_tags_filter(['virements'])" tagname="virements"></box>
-      </b-card-group>
+        <h2> Par mois</h2>
+        <b-container fluid>
+            <b-row class="date-selector">
+                <b-button @click="prev_month" variant="link">
+                    <font-awesome-icon icon="angle-left" class="fa" />
+                </b-button>
+                <span class="text-muted btn" disabled="true">
+                    {{ month.format('MMMM YYYY') }}
+                </span>
+                <b-button @click="next_month" variant="link">
+                    <font-awesome-icon icon="angle-right" class="fa" />
+                </b-button>
+            </b-row>
+        </b-container>
 
-      <tags-comparison></tags-comparison>
+        <b-card-group deck class="mb-3">
+            <box @click.native="set_tags_filter([])"></box>
+            <box @click.native="set_tags_filter(['cash'])" tagname="cash"></box>
+            <box @click.native="set_tags_filter(['cb'])" tagname="cb"></box>
+            <box @click.native="set_tags_filter(['virements'])" tagname="virements"></box>
+        </b-card-group>
 
-      <b-table striped hover :items="filtered_rows" :fields='fields'>
-        <template slot="tags" slot-scope="data">
-          <div v-for="tag in data.item.tags" :key="tag.name">
-            <div v-if="tag.name !== 'Tout'">
-              <font-awesome-icon :icon="tag.icon" class="fa"/>
-            </div>
-          </div>
-        </template>
-      </b-table>
+        <tags-comparison></tags-comparison>
+
+        <b-table striped hover :items="filtered_rows" :fields='fields'>
+            <template slot="tags" slot-scope="data">
+                <div v-for="tag in data.item.tags" :key="tag.name">
+                    <div v-if="tag.name !== 'Tout'">
+                        <font-awesome-icon :icon="tag.icon" class="fa"/>
+                    </div>
+                </div>
+            </template>
+        </b-table>
     </div>
     <div v-else>
-      <div class="nodata">
-        <h1>
-        <font-awesome-icon icon="dizzy" class="fa"/>
-          Pas de données
-          <font-awesome-icon icon="dizzy" class="fa"/>
-        </h1>
-        <p>
-          Penser à en importer!
-        </p>
-      </div>
+        <div class="nodata">
+            <h1>
+                <font-awesome-icon icon="dizzy" class="fa"/>
+                    Pas de données
+                    <font-awesome-icon icon="dizzy" class="fa"/>
+            </h1>
+            <p>
+                Penser à en importer!
+            </p>
+        </div>
     </div>
   </div>
 </template>
@@ -54,6 +58,7 @@
 import { mapGetters, mapActions } from 'vuex'
 import box from '../components/box'
 import tagsComparison from '../components/tags_comparison'
+import graphTime from '../components/graph_time'
 import moment from 'moment'
 
 moment.locale('fr')
@@ -62,7 +67,8 @@ export default {
   name: 'home',
   components: {
     box: box,
-    tagsComparison: tagsComparison
+    tagsComparison: tagsComparison,
+    graphTime: graphTime
   },
   data () {
     return {
@@ -98,6 +104,7 @@ export default {
       'tag_filter_rows': 'datas/tag_filter_rows',
       'datas_present': 'datas/present',
       'month': 'datas/month',
+      'months': 'datas/months',
       'tags': 'config/tags'
     }),
     filtered_rows () {