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path: root/modules/nixos/plausible.nix
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{
  config,
  inputs,
  lib,
  ...
}:
with lib;
let
  cfg = config.nixfiles.modules.plausible;
in
{
  options.nixfiles.modules.plausible = {
    enable = mkEnableOption "Plausible Analytics";

    port = mkOption {
      description = "Port.";
      type = with types; port;
      default = 8000;
    };

    domain = mkOption {
      description = "Domain name sans protocol scheme.";
      type = with types; nullOr str;
      default = "plausible.${config.networking.domain}";
    };
  };

  config =
    let
      db = "plausible";
    in
    mkIf cfg.enable {
      _module.args.libPlausible = {
        htmlPlausibleScript =
          {
            domain ? "$host",
            src ? "https://${cfg.domain}/js/script.js",
          }:
          ''<script defer data-domain="${domain}" src="${src}"></script>'';
      };

      secrets = {
        plausible-key.file = "${inputs.self}/secrets/plausible-key";
        plausible-admin-password.file = "${inputs.self}/secrets/plausible-admin-password";
        plausible-smtp-password.file = "${inputs.self}/secrets/smtp-password";
      };

      nixfiles.modules = {
        nginx = {
          enable = true;
          upstreams.plausible.servers."127.0.0.1:${toString cfg.port}" = { };
          virtualHosts.${cfg.domain}.locations."/" = {
            proxyPass = "http://plausible";
            proxyWebsockets = true;
          };
        };
        postgresql = {
          enable = true;
          extraPostStart = [
            ''
              $PSQL "${db}" -tAc 'GRANT ALL ON SCHEMA "public" TO "${db}"'
              $PSQL "${db}" -tAc 'CREATE EXTENSION IF NOT EXISTS citext'
            ''
          ];
        };
        clickhouse.enable = true;
      };

      services.postgresql = {
        ensureDatabases = [ db ];
        ensureUsers = [
          {
            name = db;
            ensureDBOwnership = true;
          }
        ];
      };

      services.plausible = {
        enable = true;

        adminUser = {
          name = "admin";
          email = "admin@${my.domain.shire}";
          passwordFile = config.secrets.plausible-admin-password.path;
          activate = false;
        };

        mail = {
          email = "admin+plausible@${my.domain.shire}";
          smtp = {
            hostAddr = my.domain.shire;
            hostPort = 465;
            enableSSL = true;
            user = "azahi@${my.domain.shire}";
            passwordFile = config.secrets.plausible-smtp-password.path;
          };
        };

        database = {
          clickhouse = {
            setup = false;
            url = "http://127.0.0.1:8123/default";
          };

          postgres = {
            setup = true;
            dbname = db;
          };
        };

        server = {
          baseUrl = "https://${cfg.domain}";
          disableRegistration = true;
          listenAddress = "127.0.0.1";
          inherit (cfg) port;
          secretKeybaseFile = config.secrets.plausible-key.path;
        };
      };

      systemd.services.plausible = rec {
        after = [
          "postgresql.service"
          "clickhouse.service"
        ];
        requires = after;
      };
    };
}

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