~romuloalves/get-instagram-data: Initial commit

7 files changed, 406 insertions(+), 0 deletions(-)

A .gitignore
A .npmignore
A package-lock.json
A package.json
A src/index.ts
A tsconfig.json
A tslint.json

A  => .gitignore +2 -0

@@ 1,2 @@
+node_modules
+/lib

A  => .npmignore +3 -0

@@ 1,3 @@
+src
+tsconfig.json
+tslint.json<
\ No newline at end of file

A  => package-lock.json +317 -0

@@ 1,317 @@
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+}

A  => package.json +20 -0

@@ 1,20 @@
+{
+  "name": "@romuloalves/get-instagram-data",
+  "version": "0.0.1",
+  "description": "Gets the mainpage data from an Instagram user's feed",
+  "main": "lib/index.js",
+  "scripts": {
+    "build": "tsc",
+    "lint": "tslint -p tsconfig.json"
+  },
+  "files": [
+    "lib/**/*"
+  ],
+  "author": "romuloalves",
+  "license": "MIT",
+  "devDependencies": {
+    "@types/node": "^12.7.1",
+    "tslint": "^5.18.0",
+    "typescript": "^3.5.3"
+  }
+}

A  => src/index.ts +50 -0

@@ 1,50 @@
+import { get } from "https";
+
+type promiseFn = (param: any) => void;
+
+// Constains the string to find the Instagram data variable
+const startDataString = "window._sharedData = ";
+
+// Builds the url to request the user data
+const getInstagramUrl = (id: string) => `https://www.instagram.com/${id}/`;
+
+/**
+ * @function getJsonData
+ * @description Returns the data from the Instragram"s HTML
+ * @param  {String} html HTML from Instagram
+ * @return {Object} JSON data from the page
+ */
+function getJsonData(html: string) {
+  const startIndex = html.indexOf(startDataString) + startDataString.length;
+  const endIndex = html.indexOf(";</script>", startIndex);
+  const substring = html.substring(startIndex, endIndex);
+  const data = JSON.parse(substring);
+
+  return data;
+}
+/**
+ * @function getInstagramData
+ * @description Gets the mainpage data from an Instagram user"s feed
+ * @param  {String} user User nickname to take its data
+ * @return {Promise<Object>} Promise that resolves with all the user"s data from Instagram page
+ */
+export default function getInstagramData(user: string): Promise<object> {
+  return new Promise<object>((resolve: promiseFn, reject: promiseFn) => {
+    // Gets the url of the feed
+    const userUrl = getInstagramUrl(user);
+    let html = "";
+
+    // Executes the request
+    get(userUrl, (res) => {
+      // Takes all the chunks
+      res.on("data", (chunk) => {
+        html += chunk;
+      });
+
+      // Resolves with the builded JSON
+      res.on("end", () => {
+        return resolve(getJsonData(html));
+      });
+    }).on("error", (err) => reject(err));
+  });
+}

A  => tsconfig.json +11 -0

@@ 1,11 @@
+{
+  "compilerOptions": {
+    "target": "es5",
+    "module": "commonjs",
+    "declaration": true,
+    "outDir": "./lib",
+    "strict": true
+  },
+  "include": ["src"],
+  "exclude": ["node_modules"]
+}<
\ No newline at end of file

A  => tslint.json +3 -0

@@ 1,3 @@
+{
+  "extends": ["tslint:recommended"]
+}<
\ No newline at end of file