Towards #1797
Hosts an online repository of scenarios, against which solutions may be submitted. This is the foundational layer that may support more structured "tournaments", scenario ranking, or other social activity.
# Demo
## Live server
http://swarmgame.net/list-games.html
One can use the [`submit.sh`](https://github.com/swarm-game/swarm/pull/1798/files#diff-450877e3442a0ec1c5cbe964808a263d67f1e680d3aa3c3bf9ae6f51eca682fb) script and see valid uploads reflected live on the website.
## Local testing
### Automated tests
These are database-agnostic.
scripts/run-tests.sh swarm:test:tournament-host
### Manual tests
These test database interactions. It requires first setting up a local Postgres server.
1. Start `tournament/scripts/demo/server-native.sh` in one console
2. Run `tournament/scripts/demo/client/test-cases/local/good-submit.sh` in another
# Features
* Upload and validates scenarios
* Download scenarios with solution redacted
* Submit, validate, execute, and score solutions
# Key components
* Servant server
* Hosted on AWS in a Docker container
* Stores to a Postgres database in Amazon RDS
* Shares some code with the integration tests for evaluating scenarios and solutions
The production database uses IAM to manage logins. The web app uses the AWS API to fetch a "token" which can be used to log in instead of a password. This avoids having to store a password on the server.
# TODO
- [ ] User authentication (GitHub OpenID?)
Towards #1494.
Replaced/restricted uses of `Prelude.tail` and `Prelude.!!`. Quarantined `undefined`.
Introduced a new function `listEnumsNonempty` that is guaranteed safe.
Towards #1494
* Totally eliminates partial `head`
* introduces an hlint rule to ban unsafe use of `head`
* restricts use of the partial `fromList` from `NonEmpty`
