Updated README.md

Author: lgc-4

README.md

@@ -1,2 +1,81 @@
-# one.com-ddns-python-script
-A (relatively) simple python script to update one.com type A DNS records
+# one.com DDNS Script
+
+The name is pretty self explanatory. It's a Python script for updating type A DNS records at one.com.
+
+## Required Packages
+- `requests`
+- `json`
+- `os`
+- `sys`
+
+## Usage
+At the very top of the Script there are some customization options and variables for your one.com control panel login credentials.
+
+### Login Credentials
+These are the credentials you use to log into your control panel.
+```python
+# YOUR ONE.COM LOGIN
+USERNAME="email.address@example.com"
+PASSWORD="Your Beautiful Password"
+```
+
+### Domain
+Since you can have multiple domains on one account you need to specify which domain's DNS records you want to edit.
+```python
+# YOUR DOMAIN ( NOT www.example.com, only example.com )"
+DOMAIN="example.com"
+```
+
+### Subdomains
+Next up is a list with all the subdomains you want to point at your chosen IP address.
+```python
+# LIST OF SUBDOMAINS YOU WANT POINTING TO YOUR IP
+SUBDOMAINS = ["myddns"]
+```
+To have the domain itself point to your chosen IP address, instead of a subdomain, insert an empty string into the array.
+```python
+SUBDOMAINS = ["myddns",""]
+# myddns.example.com AND example.com will point to the chosen IP address
+```
+
+Note that the script is not capable of creating new DNS records.
+
+It can only edit existing ones.
+
+### IP Address
+The `IP` option allows you to specify the IP Address you want your DNS records pointing to.
+
+You can
+- directly specify an IP Address in the script (`'127.0.0.1'`, `'1.1.1.1'`, ...)
+- have the script automatically detect your public IP Address through [ipify](ipify.org) (`'AUTO'`)
+- define an IP Address using command-line arguments (`'ARG'`, execute like `python3 one_com_ddns.py 127.0.0.1`)
+```python
+IP='127.0.0.1'
+IP='AUTO'
+IP='ARG'
+```
+
+### IP Change Detection
+The `CHECK_IP_CHANGE` option allows you to abort the script, if your IP Address hasn't changed since it was last executed.
+
+In order to detect an IP Address change, your last IP Address has to be saved in a file, specified in `LAST_IP_FILE`. If your given/detected IP Address differs from the one in the file, the script will continue
+```python
+# CHECK IF IP ADDRESS HAS CHANGED SINCE LAST SCRIPT EXECUTION?
+CHECK_IP_CHANGE = True
+# True = only continue when IP has changed
+# False = always continue
+
+# PATH WHERE THE LAST IP SHOULD BE SAVED INBETWEEN SCRIPT EXECUTIONS
+# not needed CHECK_IP_CHANGE is false
+LAST_IP_FILE = "lastip.txt"
+```
+
+## Contributing
+Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
+
+Any feature requests are welcome as well.
+
+## Need Help?
+Don't hesitate to contact me:
+- [me@lugico.de](mailto:me@lugico.de)
+- Discord: Lugico#4952