nixos/services/matrix.nix

{ pkgs, ... }: {
  imports = [ ./caddy.nix ];
  services.postgresql.enable = true;
  services.postgresql.initialScript = pkgs.writeText "synapse-init.sql" ''
    CREATE ROLE "matrix-synapse" WITH LOGIN PASSWORD 'synapse';
    CREATE DATABASE "matrix-synapse" WITH OWNER "matrix-synapse"
      TEMPLATE template0
      LC_COLLATE = "C"
      LC_CTYPE = "C";
  '';

  services = {
    matrix-synapse = {
      enable = true;
      settings.server_name = "xenia.me.uk";
      settings.listeners = [{
        bind_addresses = [ "127.0.0.1" ];
        port = 8008;
        type = "http";
        tls = false;
        x_forwarded = true;
        resources = [{
          names = [ "client" "federation" ];
          compress = true;
        }];
      }];
      extraConfigFiles = [ "/run/secrets/matrix-shared-secret" ];
    };
    caddy.virtualHosts."xenia.me.uk".extraConfig = ''
      header /.well-known/matrix/* Content-Type application/json
      header /.well-known/matrix/* Access-Control-Allow-Origin *
      respond /.well-known/matrix/server `{"m.server": "matrix.xenia.me.uk:443"}`
      respond /.well-known/matrix/client `{"m.homeserver":{"base_url":"https://matrix.xenia.me.uk"},"m.identity_server":{"base_url":"https://identity.xenia.me.uk"}}`
    '';
    caddy.virtualHosts."matrix.xenia.me.uk".extraConfig = ''
      reverse_proxy /_matrix/* localhost:8008
      reverse_proxy /_synapse/client/* localhost:8008
    '';
  };
}