Add docs for using SSO (local development)

Author: thenav56

README.md

@@ -289,3 +289,7 @@ To update GO countries and districts Mapbox tilesets, run the management command
 
 ## Import GEC codes
 To import GEC codes along with country ids, run `python manage.py import-gec-code appeal_ingest_match.csv`. The CSV should have the columns `'GST_code', 'GST_name', 'GO ID', 'ISO'`
+
+## SSO setup
+
+For more info checkout [GO-SSO](./docs/go-sso.md)

docs/go-sso.md

@@ -0,0 +1,63 @@
+# Local development
+> [!NOTE]
+> Using https://github.com/IFRCGo/sdt-api/ as OIDC application
+
+## GO-API: Django config
+> [!IMPORTANT]
+> `192.168.88.88` is used for local development only
+>
+> Make sure to replace `192.168.88.88` with your device IP within your local network
+>
+> This is to make sure your local browser and application (running inside docker) requiring SSO can communitate with go-api using same IP
+
+Update .env with
+```
+DJANGO_ADDITIONAL_ALLOWED_HOSTS=192.168.88.88
+
+OIDC_ENABLE=true
+OIDC_RSA_PRIVATE_KEY_BASE64_ENCODED=YOUR-ENCODED-VALUE
+OIDC_RSA_PUBLIC_KEY_BASE64_ENCODED=YOUR-ENCODED-VALUE
+```
+> [!TIP]
+> Generate OIDC RSA keys with 4096 bits using [RSA-KEY-PAIR-GENERATOR](https://it-tools.tech/rsa-key-pair-generator)
+>
+> Then, encode the keys using [BASE64-STRING-CONVERTER](https://it-tools.tech/base64-string-converter)
+
+> [!IMPORTANT]
+> Make sure to run `docker compose up -d serve` to update the container with newly added environment variables
+>
+> Make sure to run `docker compose run --rm migrate` to run any pending SSO database migrations
+
+## GO-API: Add new local SSO app
+Add new "application" from the Django Admin Panel - http://192.168.88.88:8000/en/admin/oauth2_provider/application/
+
+Use the following parameters to create application for SDT:
+
+|Config|Value|
+|--|--|
+|Redirect uris | http://localhost:8080/accounts/oidc/ifrcgo/login/callback/ |
+|Client type | Public |
+|Authorization grant type | Authorization code |
+|Hash client secret | true |
+|Name | SDT Local |
+|Algorithm | RSA with SHA-2 256 |
+
+> [!NOTE]
+> We are assuming the application is running locally at port 8080
+
+> [!WARNING]
+> Copy the **"Client secret:"** before saving the form as it will be hashed after save.
+>
+> We will also need the client id on the next step.
+
+## SDT: Django config
+
+Add/update the following variables in the `.env` file:
+```bash
+# OIDC config
+OIDC_ADMIN_PANEL_ENABLED=true  # Disable this if you can't access admin panel
+OIDC_IFRCGO_ENABLED=true
+OIDC_IFRCGO_OIDC_ENDPOINT=http://192.168.88.88:8000/o
+OIDC_IFRCGO_CLIENT_ID=CLIENT-ID-FROM-GO-API
+OIDC_IFRCGO_CLIENT_SECRET=CLIENT-SECRET-FROM-GO-API
+```