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use plotly.js
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Gwenhael Le Moine
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public/ploty.html
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194
public/ploty.html
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<html>
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<head>
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<meta charset="UTF-8">
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<!-- Plotly.js -->
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<script src="https://cdn.plot.ly/plotly-latest.min.js"></script>
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<script>
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const API = {
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fetch: async ( endpoint, params = {} ) => {
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let url = new URL( endpoint, `${location.protocol}//${location.host}` );
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url.search = new URLSearchParams( params );
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const response = await fetch( url );
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return await response.json();
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},
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balance: ( period, categories, depth ) => API.fetch( "/api/ledger/balance", { period: period, categories: categories, depth: depth } ),
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register: ( period, categories ) => API.fetch( "/api/ledger/register", { period: period, categories: categories } ),
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graph_values: ( period, categories, granularity ) => API.fetch( "/api/ledger/graph_values", { period: period, categories: categories, granularity: granularity } ),
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accounts: () => API.fetch( "/api/ledger/accounts" )
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}
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const Utils = {
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text_to_color: text => {
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let hash = 0
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for (let i = 0; i < text.length; i++)
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hash = (((hash << 5) - hash) + text.charCodeAt(i)) | 0;
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hash = Math.abs( hash );
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let shash = hash.toString(16).substr(0, 6).padEnd( 6, '0' );
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return `#${shash}`;
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},
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readable_date: date => {
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const months = { 0: 'Janvier', 1: 'Février', 2: 'Mars', 3: 'Avril', 4: 'Mai', 5: 'Juin', 6: 'Juillet', 7: 'Août', 8: 'Septembre', 9: 'Octobre', 10: 'Novembre', 11: 'Décembre' };
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return `${months[ date.getMonth() ]} ${date.getFullYear()}`;
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}
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};
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const UI = {
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/* https://medium.com/@heyoka/scratch-made-svg-donut-pie-charts-in-html5-2c587e935d72 */
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donut: ( element, dataset ) => {
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const thickness = 9;
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let filed_percent = 0;
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const data_to_donut_segment = ( data ) => {
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if ( data.amount > 0 ) {
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const stroke_dashoffset = ( percent ) => {
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let offset = 100 - filed_percent;
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return offset > 100 ? offset - 100 : offset;
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};
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const donut_segment = `<circle class="donut-segment ${data.account.split(':').join(' ')}" cx="21" cy="21" r="15.91549430918954" fill="transparent" stroke="${data.color}" stroke-width="${thickness}" stroke-dasharray="${data.percent} ${100 - data.percent}" stroke-dashoffset="${stroke_dashoffset( data.percent )}"><title>${data.tooltip}</title></circle>`;
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filed_percent += data.percent;
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return donut_segment;
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} else {
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return '';
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}
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};
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element.innerHTML = `<svg width="100%" height="100%" viewBox="0 0 42 42" class="donut">
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<circle class="donut-hole" cx="21" cy="21" r="15.91549430918954" fill="#fff"></circle>
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<circle class="donut-ring" cx="21" cy="21" r="15.91549430918954" fill="transparent" stroke="#d2d3d4" stroke-width="${thickness}"></circle>
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${dataset.map( line => data_to_donut_segment( line ) ).join("")}
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</svg>`;
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}
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};
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let selected_accounts = [];
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let current_period;
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const Controls = {
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main_graph: {
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init: () => Controls.main_graph.set( selected_accounts ),
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set: async accounts => {
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console.log(accounts)
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/* 1. get graph_values for accounts */
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let values = await API.graph_values( "", accounts.join(" "), "monthly" );
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/* 2. forEach account build a {
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x: ["2020-01", "2020-02", "2020-03", "2020-04"],
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y: [1, 4, 9, 16],
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name: 'Account1',
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type: 'bar'
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} */
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let graph_accounts = Object.keys(values).map( act => {
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return {
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name: act,
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type: "bar",
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x: values[ act ].map( reg => reg.date),
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y: values[ act ].map( reg => reg.amount)
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};
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});
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var layout = {
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xaxis: {title: 'Dates'},
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yaxis: {title: 'Amount'},
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barmode: 'relative',
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title: 'Relative Barmode'
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};
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Plotly.newPlot('mainGraph', graph_accounts, layout);
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}
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},
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period: {
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init: () => Controls.period.set( new Date() ),
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set: period => {
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current_period = period;
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document.querySelector( "#period #display" ).innerHTML = Utils.readable_date( current_period );
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monthly( current_period, selected_accounts );
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},
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get: () => current_period,
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prev: () => {
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current_period.setMonth( current_period.getMonth() - 1 );
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Controls.period.set( current_period );
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},
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next: () => {
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current_period.setMonth( current_period.getMonth() + 1 );
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Controls.period.set( current_period );
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},
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},
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accounts: {
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init: async () => {
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let account_to_option = ( account, selected ) => `<option value="${account.join(':')}" ${selected ? "selected" : ""}>${account.join(':')}</option>`;
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let accounts = await API.accounts();
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let select = document.querySelector("select#accounts");
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select.innerHTML = '';
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for ( let i = 1 ; i < accounts.reduce( (memo, a) => a.length > memo ? a.length : memo, 0 ) ; i++ ) {
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select.innerHTML += `<optgroup label="Depth: ${i}">${accounts.filter( a => a.length == i ).map( account => account_to_option( account, i == 1 )).join('')}</optgroup>`;
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}
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let ui_accounts = document.getElementById("accounts")
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ui_accounts.addEventListener( 'change',
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event => Controls.accounts.onchange( event.target ) );
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Controls.accounts.onchange( ui_accounts );
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},
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onchange: element => {
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selected_accounts = Array.from( element.options ).filter( o => o.selected ).map( o => o.value );
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Controls.main_graph.set( selected_accounts );
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monthly( current_period, selected_accounts );
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}
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}
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};
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const monthly = async ( period, categories ) => {
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let balance = await API.balance( period.toISOString().split("T")[0].slice( 0, -3 ), categories.join(" "), 999 )
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const total = balance.reduce( (memo, line) => memo + line.amount, 0 );
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UI.donut( document.querySelector( `#month #donut` ),
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balance.sort( (a, b) => b.amount - a.amount )
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.map( line => {
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line.color = Utils.text_to_color( line.account );
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line.percent = ( line.amount / total ) * 100;
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line.tooltip = `${line.account} : ${line.amount} €`;
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return line;
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} ) );
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};
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</script>
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</head>
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<body>
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<div id="controls">
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<div id="period">
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<button onclick="Controls.period.prev()">-</button>
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<button onclick="Controls.period.next()">+</button>
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<h3 id="display"></h3>
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</div>
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</div>
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<select id="accounts" name="accounts" multiple size="20"></select>
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<div id="mainGraph"></div>
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<div id="month">
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<div id="donut" style="height: 256; width: 256;"></div>
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</div>
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<script>
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(async () => {
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await Controls.accounts.init();
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Controls.main_graph.init();
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Controls.period.init();
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})();
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</script>
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</body>
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</html>
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