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upload.js
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upload.js
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/* eslint-env node, es6 */
/* eslint-disable */
'use strict';
const isString = x => typeof x === 'string';
const isFunction = x => typeof x === 'function';
const isArray = x => Array.isArray(x);
const fs = require('fs');
const asyncForeach = (arr, fn) => {
const length = arr.length;
const generator = j => {
let promise;
if (j < length) {
promise = fn(arr[j], j, arr).then(() => generator(j + 1));
}
return promise;
};
return generator(0);
};
const asyncBatchForeach = (batchSize, arr, fn) => {
const length = arr.length;
const generator = (from, to) => {
let result;
if (from < length) {
const batch = arr.slice(from, to);
const promises = batch.map((el, i) => fn(el, from + i, arr));
const next = () => generator(to, to + batchSize);
result = Promise.all(promises).then(next);
}
return result;
};
return generator(0, batchSize);
};
const uploadFiles = params => {
const storage = require('./jsdoc/storage/cdn.storage');
const mimeType = {
css: 'text/css',
eot: 'application/vnd.ms-fontobject',
gif: 'image/gif',
html: 'text/html',
ico: 'image/x-icon',
jpeg: 'image/jpeg',
jpg: 'image/jpeg',
js: 'text/javascript',
json: 'application/json',
png: 'image/png',
svg: 'image/svg+xml',
ttf: 'application/font-sfnt',
woff: 'application/font-woff',
woff2: 'application/font-woff',
zip: 'application/zip'
};
const {
batchSize,
bucket,
callback,
onError = Promise.reject,
files,
s3Params = {}
} = params;
const errors = [];
let result;
if (isString(bucket) && isArray(files)) {
const cdn = storage.strategy.s3({
Bucket: bucket
});
const uploadFile = file => {
const { from, to } = file;
let filePromise;
if (isString(from) && isString(to)) {
// empty encoding -> read as binary buffer
let content;
try {
content = fs.readFileSync(from, '');
} catch (err) {
errors.push(err);
}
const fileType = from.split('.').pop();
const fileMime = mimeType[fileType];
if (content && content.length > 0) {
filePromise = storage.push(cdn, to, content, fileMime, s3Params)
.then(() => isFunction(callback) && callback(from, to))
.catch(err => {
const error = {
message: `S3: ${(err.pri && err.pri.message) || (err.internal && err.internal.message)}`,
from,
to
};
errors.push(error);
return onError(error);
});
} else {
const error = {
message: 'Path is not a file',
from,
to
};
errors.push(error);
filePromise = onError(error);
}
} else {
const error = {
message: 'Invalid file information!',
from,
to
};
errors.push(error);
filePromise = onError(error);
}
return filePromise;
};
result = asyncBatchForeach(batchSize, files, uploadFile).then(() => ({
errors
}));
} else {
result = Promise.reject(new Error());
}
return result;
};
module.exports = {
asyncForeach,
uploadFiles
};