'use strict';
const RENDERERS = {
abstract: () => {
console.log('Not implemented');
},
console: (data) => {
console.table(data);
},
web: (data) => {
const keys = Object.keys(data[0]);
const line = (row) =>
'
' + keys.map((key) => `| ${row[key]} | `).join('') + '
';
const output = [
'',
keys.map((key) => `| ${key} | `).join(''),
'
',
data.map(line).join(''),
'
',
];
console.log(output.join(''));
},
markdown: (data) => {
const keys = Object.keys(data[0]);
const line = (row) =>
'|' + keys.map((key) => `${row[key]}`).join('|') + '|\n';
const output = [
'|',
keys.map((key) => `${key}`).join('|'),
'|\n',
'|',
keys.map(() => '---').join('|'),
'|\n',
data.map(line).join(''),
];
console.log(output.join(''));
},
};
const context = (rendererName) => {
const renderer = RENDERERS[rendererName] || RENDERERS.abstract;
return (data) => renderer(data);
};
// Usage
const png = context('png');
const con = context('console');
const web = context('web');
const mkd = context('markdown');
const persons = [
{ name: 'Marcus Aurelius', city: 'Rome', born: 121 },
{ name: 'Victor Glushkov', city: 'Rostov on Don', born: 1923 },
{ name: 'Ibn Arabi', city: 'Murcia', born: 1165 },
{ name: 'Mao Zedong', city: 'Shaoshan', born: 1893 },
{ name: 'Rene Descartes', city: 'La Haye en Touraine', born: 1596 },
];
console.group('Unknown Strategy:');
png(persons);
console.groupEnd();
console.group('\nConsoleRenderer:');
con(persons);
console.groupEnd();
console.group('\nWebRenderer:');
web(persons);
console.groupEnd();
console.group('\nMarkdownRenderer:');
mkd(persons);
console.groupEnd();