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+# Brooklyn-Based Board Gaming signup sheet
+
+This directory contains a small web application that acts as a signup
+sheet and attendee tracking system for [my local board gaming
+meetup](https://www.meetup.com/brooklyn-based-board-gaming/).
+
+## Development
+
+### Installing dependencies
+
+#### With Nix + Docker ("blessed way")
+
+Prerequisites:
+
+-   [Nix](https://nixos.org/)
+-   [lorri](https://github.com/nix-community/lorri)
+-   [Docker](https://www.docker.com/)
+
+From this directory in a full checkout of depot, run the following
+commands to install all development dependencies:
+
+``` shell-session
+$ pwd
+/path/to/depot/users/grfn/bbbg
+$ direnv allow
+$ lorri watch --once # Wait for a single nix shell build
+```
+
+Then, to run a docker container with the development database:
+
+``` shell-session
+$ pwd
+/path/to/depot/users/grfn/bbbg
+$ arion up -d
+```
+
+#### Choose-your-own-adventure
+
+Note that the **authoritative** source for dev dependencies is the `shell.nix`
+file in this directory - those may diverge from what's written here; if so
+follow those versions rather than these.
+
+-   Install the [clojure command-line
+    tools](https://clojure.org/guides/getting_started), with openjdk 11
+-   Install and run a postgresql 12 database, with:
+    -   A user with superuser priveleges, the username `bbbg` and the
+        password `password`
+    -   A database called `bbbg` owned by that user.
+-   Export the following environment variables in a context visible by
+    whatever method you use to run the application:
+    -   `PGHOST=localhost`
+    -   `PGUSER=bbbg`
+    -   `PGDATABASE=bbbg`
+    -   `PGPASSWORD=bbbg`
+
+### Running the application
+
+Before running the app, you'll need an oauth2 client-id and client secret for a
+Discord app. The application can either load those from a
+[pass](https://www.passwordstore.org/) password store, or read them from
+plaintext files in a directory. In either case, they should be accessible at the
+paths `bbbg/discord-client-id` and `bbbg/discord-client-secret` respectively.
+
+#### From the command line
+
+``` shell-session
+$ clj -A:dev
+Clojure 1.11.0-alpha3
+user=> (require 'bbbg.core)
+nil
+user=> ;; Optionally, if you're using a directory with plaintext files for the discord client ID and client secret:
+user=> (bbbg.util.dev-secrets/set-backend! [:dir "/path/to/that/directory"])
+user=> (bbbg.core/run-dev)
+##<SystemMap>
+user=> (bbbg.db/migrate! (:db bbbg.core/system))
+11:57:26.536 [main] INFO  migratus.core - Starting migrations {  }
+11:57:26.538 [main] INFO  com.zaxxer.hikari.HikariDataSource - HikariPool-1 - Starting... {  }
+11:57:26.883 [main] INFO  com.zaxxer.hikari.pool.HikariPool - HikariPool-1 - Added connection com.impossibl.postgres.jdbc.PGDirectConnection@3cae770e {  }
+11:57:26.884 [main] INFO  com.zaxxer.hikari.HikariDataSource - HikariPool-1 - Start completed. {  }
+11:57:26.923 [main] INFO  migratus.core - Ending migrations {  }
+nil
+```
+
+This will run a web server for the application listening at
+<http://localhost:8888>
+
+#### In Emacs, with [CIDER](https://docs.cider.mx/cider/index.html) + [direnv](https://github.com/wbolster/emacs-direnv)
+
+Open `//users/grfn/bbbg/src/bbbg/core.clj` in a buffer, then follow the
+instructions at the end of the file
+
+## Deployment
+
+### With nix+terraform
+
+Deployment configuration is located in the `tf.nix` file, which is
+currently tightly coupled to my own infrastructure and AWS account but
+could hypothetically be adjusted to be general-purpose.
+
+To deploy a new version of the application, after following "installing
+dependencies" above, run the following command in a context with ec2
+credentials available:
+
+``` shell-session
+$ terraform apply
+```
+
+The current deploy configuration includes:
+
+-   An ec2 instance running nixos, with a postgresql database and the
+    bbbg application running as a service, behind nginx with an
+    auto-renewing letsencrypt cert
+-   The DNS A record for `bbbg.gws.fyi` pointing at that ec2 instance,
+    in the cloudflare zone for `gws.fyi`
+
+### Otherwise
+
+¯\\\_(ツ)_/¯
+
+You'll need:
+
+-   An uberjar for bbbg; the canonical way of building that is `nix-build
+    /path/to/depot -A users.grfn.bbbg.server-jar` but I\'m not sure how that
+    works outside of nix
+-   A postgresql database
+-   Environment variables telling the app how to connect to that
+    database. See `config.systemd.services.bbbg-server.environment` in
+    `module.nix` for which env vars are currently being exported by the
+    NixOS module that runs the production version of the app