export const isJsons = ((array) => Array.isArray(array) && array.every(
 row => (typeof row === 'object' && !(row instanceof Array))
));

export const isArrays = ((array) => Array.isArray(array) && array.every(
 row => Array.isArray(row)
));

export const jsonsHeaders = ((array) => Array.from(
 array.map(json => Object.keys(json))
 .reduce((a, b) => new Set([...a, ...b]), [])
));

export const jsons2arrays = (jsons, headers) => {
  headers = headers || jsonsHeaders(jsons);
  const data = jsons.map((object) => headers.map((header) => (header in object) ? object[header] : ''));
  return [headers, ...data];
};

export const joiner = ((data,separator = ',') =>
 data.map((row, index) => row.map((element) => "\"" + element + "\"").join(separator)).join(`\n`)
);

export const arrays2csv = ((data, headers, separator) =>
 joiner(headers ? [headers, ...data] : data, separator)
);

export const jsons2csv = ((data, headers, separator) =>
 joiner(jsons2arrays(data, headers), separator)
);

export const string2csv = ((data, headers, separator) =>
  (headers) ? `${headers.join(separator)}\n${data}`: data
)

export const toCSV = (data, headers, separator) => {
 if (isJsons(data)) return jsons2csv(data, headers, separator);
 if (isArrays(data)) return arrays2csv(data, headers, separator);
 if (typeof data ==='string') return string2csv(data, headers, separator);
 throw new TypeError(`Data should be a "String", "Array of arrays" OR "Array of objects" `);
};

export const buildURI = ((data, headers, separator) => encodeURI(
  `data:text/csv;charset=utf-8,${toCSV(data, headers, separator)}`
 )
);