✨ Add header options to CLI

Author: fabsrc

README.md

@@ -28,9 +28,13 @@ $ graphql-schema-diff --help
     --ignore-breaking-changes  Do not exit with error on breaking changes
     --create-html-output  Creates an HTML file containing the diff
     --html-output-directory  Directory where the HTML file should be stored (Default: './schemaDiff')
+    --header, -H  Header to send to all remote schema sources
+    --left-schema-header  Header to send to left remote schema source
+    --right-schema-header Header to send to right remote schema source
 
   Examples
     $ graphql-schema-diff https://example.com/graphql schema.graphql
+    $ graphql-schema-diff https://example.com/graphql schema.graphql -H 'Authorization: Bearer 123'
 
 ```
 

src/cli.ts

@@ -3,7 +3,7 @@
 import meow from 'meow';
 import chalk from 'chalk';
 import { createHtmlOutput } from './html';
-import { getDiff } from '.';
+import { getDiff, Headers } from './diff';
 
 const cli = meow(
   `
@@ -15,9 +15,13 @@ const cli = meow(
     --ignore-breaking-changes  Do not exit with error on breaking changes
     --create-html-output  Creates an HTML file containing the diff
     --html-output-directory  Directory where the HTML file should be stored (Default: './schemaDiff')
+    --header, -H  Header to send to all remote schema sources
+    --left-schema-header  Header to send to left remote schema source
+    --right-schema-header Header to send to right remote schema source
 
   Examples
     $ graphql-schema-diff https://example.com/graphql schema.graphql
+    $ graphql-schema-diff https://example.com/graphql schema.graphql -H 'Authorization: Bearer 123'
 `,
   {
     flags: {
@@ -33,18 +37,63 @@ const cli = meow(
       'html-output-directory': {
         type: 'string',
         default: 'schemaDiff'
+      },
+      header: {
+        type: 'string',
+        alias: 'H'
+      },
+      'left-schema-header': {
+        type: 'string'
+      },
+      'right-schema-header': {
+        type: 'string'
       }
     }
   }
 );
 
-const [leftSchemaLocation, rightSchemaLocation] = cli.input;
+function parseHeaders(headerInput?: string | string[]): Headers | undefined {
+  let headers: string[][];
+  const parseHeader = (header: string): string[] =>
+    header.split(':').map((val: string) => val.trim());
+
+  if (!headerInput) return;
+
+  if (Array.isArray(headerInput)) {
+    headers = headerInput.map(parseHeader);
+  } else {
+    headers = [parseHeader(headerInput)];
+  }
+
+  return headers
+    .filter(([key]) => key != null && key !== '')
+    .reduce((result, [key, value]) => ({ ...result, [key && key]: value }), {});
+}
+
+const [leftSchemaLocation, rightSchemaLocation]: string[] = cli.input;
+const {
+  header,
+  leftSchemaHeader,
+  rightSchemaHeader
+}: {
+  header?: string | string[];
+  leftSchemaHeader?: string | string[];
+  rightSchemaHeader?: string | string[];
+} = cli.flags;
 
 if (!leftSchemaLocation || !rightSchemaLocation) {
   throw new Error('Schema locations missing!');
 }
 
-getDiff(leftSchemaLocation, rightSchemaLocation)
+getDiff(leftSchemaLocation, rightSchemaLocation, {
+  headers: parseHeaders(header),
+  leftSchema: {
+    headers: parseHeaders(leftSchemaHeader)
+  },
+  rightSchema: {
+    headers: parseHeaders(rightSchemaHeader)
+  }
+})
   .then(async result => {
     if (result === undefined) {
       console.log(chalk.green('✔ No changes'));

src/diff.ts

@@ -16,7 +16,7 @@ import fetch from 'node-fetch';
 import disparity from 'disparity';
 import { fileLoader, mergeTypes } from 'merge-graphql-schemas';
 
-interface Headers {
+export interface Headers {
   [key: string]: string;
 }
 
@@ -111,7 +111,10 @@ export async function getDiff(
     throw new Error('Schemas not defined');
   }
 
-  const [leftSchemaSDL, rightSchemaSDL] = [printSchema(leftSchema), printSchema(rightSchema)];
+  const [leftSchemaSDL, rightSchemaSDL] = [
+    printSchema(leftSchema),
+    printSchema(rightSchema)
+  ];
 
   if (leftSchemaSDL === rightSchemaSDL) {
     return;