From ae5ceb643f149987e460307db956ed47ead801b8 Mon Sep 17 00:00:00 2001
From: Filip Rojek <filip@filiprojek.cz>
Date: Thu, 4 Apr 2024 01:32:29 +0200
Subject: [PATCH] Added environment module

---
 package.json               |  1 +
 progress-blog.md           | 10 ++++++
 src/app.ts                 |  4 ++-
 src/modules/Environment.ts | 73 ++++++++++++++++++++++++++++++++++++++
 4 files changed, 87 insertions(+), 1 deletion(-)
 create mode 100644 src/modules/Environment.ts

diff --git a/package.json b/package.json
index d6b7233..b7fa714 100644
--- a/package.json
+++ b/package.json
@@ -27,6 +27,7 @@
 	"license": "MIT",
 	"dependencies": {
 		"colors": "1.4.0",
+		"dotenv": "^16.4.5",
 		"fs-extra": "^10.0.0",
 		"inquirer": "^8.1.2",
 		"pad": "^3.2.0"
diff --git a/progress-blog.md b/progress-blog.md
index c0fdc9b..f993785 100644
--- a/progress-blog.md
+++ b/progress-blog.md
@@ -37,3 +37,13 @@
 -   dropnul jsem support pro js
 
 -   version update: 3.0.5
+
+### 4-03-2024
+
+ - [ ] modules
+   - [ ] Log
+   - [ ] Auth
+   - [ ] Env
+   - [ ] Docs
+   - [ ] Databases
+- [ ] CLI
\ No newline at end of file
diff --git a/src/app.ts b/src/app.ts
index 01f27ad..1aa8ebe 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -5,4 +5,6 @@
 //app.use(morgan('dev'))
 
 import Log from "./modules/LogService"
-export { Log }
+import Env from "./modules/Environment"
+
+export { Log, Env }
diff --git a/src/modules/Environment.ts b/src/modules/Environment.ts
new file mode 100644
index 0000000..9dcccd3
--- /dev/null
+++ b/src/modules/Environment.ts
@@ -0,0 +1,73 @@
+import path from 'path'
+import fs from 'fs-extra'
+import Log from '../modules/LogService'
+import dotenv from 'dotenv'
+
+export default class Environment {
+	static get(env_path: string) {
+		console.log('ENV PATH:', env_path)
+
+		if(!fs.existsSync(env_path)) {
+			console.log('env_path = ', env_path)
+			Log.error(500, `.env file for ${process.env.NODE_ENV ? process.env.NODE_ENV : ''} environment does not exists`)
+			process.exit()
+		}
+
+		const norkcfg_path = path.join(path.dirname(env_path), '../norkconfig.json')
+		if(!fs.existsSync(norkcfg_path)) {
+			console.log('norkcfg_path = ', env_path)
+			Log.error(500, `norkcfg file does not exists`)
+			process.exit()
+		}
+
+		dotenv.config({ path: env_path })
+
+		const norkcfg = fs.readJSONSync(norkcfg_path)
+
+		if (norkcfg.database) {
+			if (norkcfg.database.db == 'postgresql') {
+				if (!process.env.DB_PORT) {
+					process.env.DB_PORT = '5432'
+				}
+
+				if (!process.env.DB_HOST) {
+					process.env.DB_HOST = '127.0.0.1'
+				}
+
+				if (!process.env.DB_USERNAME || !process.env.DB_PASSWORD || !process.env.DB_DATABASE) {
+					Log.error(500, 'missing DB parameters in .env file')
+					process.exit()
+				}
+			}
+		}
+
+		if (process.env.JWT_SECRET === undefined || process.env.JWT_SECRET == '') {
+			Log.error(500, 'JWT_SECRET is not set!')
+			process.exit()
+		}
+
+		return {
+			// General
+			APP_PORT: Number(process.env.APP_PORT),
+			APP_HOST: String(process.env.APP_HOST),
+			APP_HOSTNAME: process.env.APP_HOSTNAME !== undefined ? String(process.env.APP_HOSTNAME) : null,
+			CORS_WHITELIST: String(process.env.CORS_WHITELIST),
+			JWT_SECRET: String(process.env.JWT_SECRET),
+			// MongoDB
+			DB_URI: String(process.env.DB_URI),
+			// PostgreSQL
+			DB_PORT: Number(process.env.DB_PORT),
+			DB_HOST: String(process.env.DB_HOST),
+			DB_USERNAME: String(process.env.DB_USERNAME),
+			DB_PASSWORD: String(process.env.DB_PASSWORD),
+			DB_DATABASE: String(process.env.DB_DATABASE),
+			// Nork
+			NORK: norkcfg,
+			// SMTP
+			SMTP_HOST: String(process.env.SMTP_HOST),
+			SMTP_USER: String(process.env.SMTP_USER),
+			SMTP_PASS: String(process.env.SMTP_PASS),
+			SMTP_FROM: String(process.env.SMTP_FROM)
+		}
+	}
+}