✨ Adding files load utility.

Adding helpers to implement file load automatically.

Author: marcelohmdias

package.json

@@ -42,7 +42,8 @@
     "fastify-plugin": "^1.6.0",
     "pino": "^5.15.0",
     "pino-pretty": "^3.5.0",
-    "ramda": "^0.26.1"
+    "ramda": "^0.26.1",
+    "readdir-enhanced": "^5.1.1"
   },
   "devDependencies": {
     "@babel/cli": "^7.7.7",

src/helpers/loadFiles.ts

@@ -0,0 +1,43 @@
+import { readFile } from 'fs'
+import { IResolvers } from 'graphql-tools'
+import { join } from 'path'
+import { compose, curry, mergeDeepRight } from 'ramda'
+import readdir from 'readdir-enhanced'
+
+const deep = true
+
+const makePath = curry((path: string, file: string): string => join(path, file))
+
+const readFiles = (path: string, filter: string): Promise<Array<string>> => readdir(path, { deep, filter })
+
+const loadContent = (path: string): Promise<string> => {
+  return new Promise((resolve, reject) => {
+    readFile(path, 'utf8', (err, data) => {
+      if (err) return reject(err)
+      resolve(data)
+    })
+  })
+}
+
+const readContentFiles = async (path: string, files: Array<string>): Promise<string[]> => {
+  return Promise.all(files.map(compose(loadContent, makePath(path))))
+}
+
+const requireFiles = async (path: string, files: Array<string>): Promise<IResolvers> => {
+  return files.map(makePath(path)).reduce((prev, curr) => {
+    /* eslint @typescript-eslint/no-var-requires: "Off" */
+    const cxt = require(`${curr}`)
+    return mergeDeepRight(prev, cxt)
+  }, {})
+}
+
+export const loadSchemas = async (path: string, filter: string): Promise<string> => {
+  const files = await readFiles(path, filter)
+  const list = await readContentFiles(path, files)
+  return list.join('\n')
+}
+
+export const loadContext = async (dir: string, filter: string): Promise<IResolvers> => {
+  const files = await readFiles(dir, filter)
+  return requireFiles(dir, files)
+}