From 163f732ac7487ac6fc1faf2d113449c50d040dcd Mon Sep 17 00:00:00 2001
From: "Jyotirmoy Bandyopadhyaya [Bravo68]" <jbandyopadhayaya@gmail.com>
Date: Wed, 3 May 2023 18:21:18 +0530
Subject: [PATCH] added ip info support to api

---
 .eslintrc                                     |  3 +-
 .gitignore                                    |  4 +-
 packages/api/bin/fetch-mmdb.sh                | 15 ++++++++
 packages/api/controllers/ipinfo.controller.ts | 37 +++++++++++++++++++
 packages/api/helpers/mmdb_client.ts           |  6 +++
 packages/api/index.ts                         |  1 +
 packages/api/package.json                     |  2 +
 packages/api/routes/api/ip.routes.ts          | 10 +++++
 packages/api/services/ipinfo.service.ts       |  8 ++++
 9 files changed, 83 insertions(+), 3 deletions(-)
 create mode 100755 packages/api/bin/fetch-mmdb.sh
 create mode 100644 packages/api/controllers/ipinfo.controller.ts
 create mode 100644 packages/api/helpers/mmdb_client.ts
 create mode 100644 packages/api/routes/api/ip.routes.ts
 create mode 100644 packages/api/services/ipinfo.service.ts

diff --git a/.eslintrc b/.eslintrc
index c34a858..bbed8d8 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -7,8 +7,7 @@
 	"plugins": ["@typescript-eslint"],
 	"extends": [
 		"eslint:recommended",
-		"plugin:@typescript-eslint/recommended",
-		"prettier"
+		"plugin:@typescript-eslint/recommended"
 	],
 	"rules": {
 		"@typescript-eslint/no-unused-vars": "warn",
diff --git a/.gitignore b/.gitignore
index e3f65bd..fdadfec 100644
--- a/.gitignore
+++ b/.gitignore
@@ -134,4 +134,6 @@ dist
 **/jwtRS256.key.pub
 
 **/yarn.lock
-.husky
\ No newline at end of file
+.husky
+
+**/GeoLite2-City*
\ No newline at end of file
diff --git a/packages/api/bin/fetch-mmdb.sh b/packages/api/bin/fetch-mmdb.sh
new file mode 100755
index 0000000..1561d8d
--- /dev/null
+++ b/packages/api/bin/fetch-mmdb.sh
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+# API_KEY="PIiA7448yJCk23aO"
+# URL="https://download.maxmind.com/app/geoip_download?edition_id=GeoLite2-City&license_key=$API_KEY&suffix=tar.gz"
+URL="https://download.db-ip.com/free/dbip-city-lite-2023-05.mmdb.gz"
+wget -O "GeoLite2-City.gz" "$URL"
+
+# unzip gz file
+gzip -d GeoLite2-City.gz
+
+
+mv GeoLite2-City "GeoLite2-City.mmdb"
+
+rm -rf GeoLite2-City.gz
+echo "Done!!"
\ No newline at end of file
diff --git a/packages/api/controllers/ipinfo.controller.ts b/packages/api/controllers/ipinfo.controller.ts
new file mode 100644
index 0000000..56cae27
--- /dev/null
+++ b/packages/api/controllers/ipinfo.controller.ts
@@ -0,0 +1,37 @@
+import IPInfo from '../services/ipinfo.service'
+import { Request, Response, NextFunction } from 'express'
+
+const { getIPInfo } = new IPInfo()
+
+export default class IPInfoController {
+    public async fetchCurrentIPInfo(
+        req: Request,
+        res: Response,
+        next: NextFunction
+    ): Promise<any> {
+        try {
+            const ip =
+                req.headers['x-forwarded-for'] ||
+                req.socket.remoteAddress ||
+                req.ip
+            const data = await getIPInfo(ip as string)
+            res.status(200).json(data)
+        } catch (error: any) {
+            next(error)
+        }
+    }
+
+    public async fetchIPInfo(
+        req: Request,
+        res: Response,
+        next: NextFunction
+    ): Promise<any> {
+        try {
+            const { ip } = req.params
+            const data = await getIPInfo(ip)
+            res.status(200).json(data)
+        } catch (error: any) {
+            next(error)
+        }
+    }
+}
diff --git a/packages/api/helpers/mmdb_client.ts b/packages/api/helpers/mmdb_client.ts
new file mode 100644
index 0000000..ad205ce
--- /dev/null
+++ b/packages/api/helpers/mmdb_client.ts
@@ -0,0 +1,6 @@
+import fs from 'fs'
+import mmdb, { CityResponse } from 'mmdb-lib'
+
+const db = fs.readFileSync('GeoLite2-City.mmdb')
+
+export default new mmdb.Reader<CityResponse>(db)
diff --git a/packages/api/index.ts b/packages/api/index.ts
index c88b393..14eb085 100644
--- a/packages/api/index.ts
+++ b/packages/api/index.ts
@@ -29,6 +29,7 @@ app.use(morgan('dev'))
 app.use(express.json())
 app.use(express.urlencoded({ extended: true, limit: '50mb' }))
 app.set('view engine', 'ejs')
+app.set('trust proxy', true)
 
 console.log('☄ ', 'Base Route', '/')
 
diff --git a/packages/api/package.json b/packages/api/package.json
index 39c3afe..34bd5aa 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -22,6 +22,7 @@
         "graphql-request": "^5.0.0",
         "helmet": "^6.0.1",
         "joi": "^17.7.0",
+        "mmdb-lib": "^2.0.2",
         "morgan": "^1.10.0",
         "multer": "^1.4.5-lts.1",
         "multer-s3": "^3.0.1",
@@ -48,6 +49,7 @@
         "@swc/wasm": "^1.3.23",
         "@types/cors": "^2.8.13",
         "@types/morgan": "^1.9.3",
+        "@typescript-eslint/eslint-plugin": "^5.59.2",
         "concurrently": "^7.6.0",
         "cross-env": "^7.0.3",
         "graphqurl": "^1.0.1",
diff --git a/packages/api/routes/api/ip.routes.ts b/packages/api/routes/api/ip.routes.ts
new file mode 100644
index 0000000..96024d0
--- /dev/null
+++ b/packages/api/routes/api/ip.routes.ts
@@ -0,0 +1,10 @@
+import { Router } from 'express'
+import IPController from '../../controllers/ipinfo.controller'
+
+const router = Router()
+const ipController = new IPController()
+
+router.get('/current', ipController.fetchCurrentIPInfo)
+router.get('/:ip', ipController.fetchIPInfo)
+
+export default router
diff --git a/packages/api/services/ipinfo.service.ts b/packages/api/services/ipinfo.service.ts
new file mode 100644
index 0000000..5bec6f6
--- /dev/null
+++ b/packages/api/services/ipinfo.service.ts
@@ -0,0 +1,8 @@
+import mmdb_client from '../helpers/mmdb_client'
+
+export default class IPInfo {
+    public getIPInfo = async (ip: string) => {
+        const data = await mmdb_client.get(ip)
+        return data
+    }
+}