{
  pkgs,
  lib,
  config,
  inputs,
  ...
}:

{
  imports = [ ./nix/kafka.nix ];

  # https://devenv.sh/packages/
  packages = [
    pkgs.git
    pkgs.jetbrains.idea-community-bin
    pkgs.yaml-language-server
  ];

  languages.java.enable = true;
  languages.java.maven.enable = true;
  languages.nix.enable = true;

  scripts =
    let
      datasource = "-Dspring.datasource.url=jdbc:postgresql://${config.services.postgres.listen_addresses}:5432";
      startFlexinale = name: db: ''
        java ${datasource}/${db} -jar flex-training-flexinale/flexinale-${name}/target/flexinale-${name}-2024.3.0-spring-boot-fat-jar.jar
      '';
    in
    {
      "monolith-run".exec = startFlexinale "monolith" "monolith";
      "modulith-1-run".exec = startFlexinale "modulith-1-onion" "modulith-1";
      "modulith-2-run".exec = startFlexinale "modulith-2-components" "modulith-2";
      "monolith-init".exec = ''
        cd ${config.env.DEVENV_ROOT}/flex-training-flexinale
        mvn test -Dtest=testdata.TestDataLoader -pl flexinale-monolith -am
      '';
      "modulith-1-init".exec = ''
        cd ${config.env.DEVENV_ROOT}/flex-training-flexinale
        mvn test -Dtest=testdata.TestDataLoader -pl flexinale-modulith-1-onion -am
      '';
      "modulith-2-init".exec = ''
        cd ${config.env.DEVENV_ROOT}/flex-training-flexinale
        mvn test -Dtest=testdata.AllTestDataLoader -pl flexinale-modulith-2-components -am
      '';
      "distributed-init".exec = ''
        cd ${config.env.DEVENV_ROOT}/flex-training-flexinale
        mvn test -Dtest=testdata.AllTestDataLoader -pl flexinale-distributed -am
        mvn test -Dtest=testdata.FKKsVTestDataLoader -pl flexinale-distributed -am
      '';
      "distributed-portal".exec = ''
        java ${datasource}/distributed-besucherportal \
           -Dbootstrap.servers=localhost:9092 \
           -Dspring.kafka.consumer.bootstrap-servers=localhost:9092 \
           -Dspring.kafka.producer.bootstrap-servers=localhost:9092 \
           -jar flex-training-flexinale/flexinale-distributed/flexinale-distributed-besucherportal/target/flexinale-distributed-besucherportal-2024.3.0-spring-boot-fat-jar.jar
      '';
      "distributed-backoffice".exec = ''
        java ${datasource}/distributed-backoffice \
           -Dbootstrap.servers=localhost:9092 \
           -Dspring.kafka.consumer.bootstrap-servers=localhost:9092 \
           -Dspring.kafka.producer.bootstrap-servers=localhost:9092 \
           -jar flex-training-flexinale/flexinale-distributed/flexinale-distributed-backoffice/target/flexinale-distributed-backoffice-2024.3.0-spring-boot-fat-jar.jar
      '';
      "distributed-ticketing".exec = ''
        java ${datasource}/distributed-ticketing \
           -Dbootstrap.servers=localhost:9092 \
           -Dspring.kafka.consumer.bootstrap-servers=localhost:9092 \
           -Dspring.kafka.producer.bootstrap-servers=localhost:9092 \
           -jar flex-training-flexinale/flexinale-distributed/flexinale-distributed-ticketing/target/flexinale-distributed-ticketing-2024.3.0-spring-boot-fat-jar.jar
      '';
    };

  services.kafka = {
    enable = true;
    clusterId = "foobar";
    settings = {
      "broker.id" = 1;
      "node.id" = 1;
      "offsets.topic.replication.factor" = 1;
      "transaction.state.log.replication.factor" = 1;
      "transaction.state.log.min.isr" = 1;
      "process.roles" = [
        "broker"
        "controller"
      ];
      "listeners" = [
        "PLAINTEXT://:9092"
        "FLEXINALE://:29092"
        "CONTROLLER://:9093"
      ];
      "listener.security.protocol.map" = [
        "PLAINTEXT:PLAINTEXT"
        "FLEXINALE:PLAINTEXT"
        "CONTROLLER:PLAINTEXT"
      ];
      "controller.quorum.voters" = [
        "1@localhost:9093"
      ];
      "controller.listener.names" = [ "CONTROLLER" ];
    };
  };

  services.postgres = {
    enable = true;
    listen_addresses = "127.0.0.1";
    initialScript =
      let
        createDB = n: ''
          CREATE DATABASE "${n}";
          GRANT ALL PRIVILEGES ON DATABASE "${n}" TO "flexinale";
        '';
      in
      ''
        CREATE USER flexinale WITH SUPERUSER PASSWORD 'flexinale';
      ''
      + (lib.strings.concatMapStringsSep "\n" createDB [
        "monolith"
        "modulith-1"
        "modulith-2"
        "distributed-backoffice"
        "distributed-besucherportal"
        "distributed-ticketing"
        "distributed-test"
      ]);
  };

  # https://devenv.sh/processes/
  processes.distributed-portal.exec = config.scripts.distributed-portal.exec;
  processes.distributed-backoffice.exec = config.scripts.distributed-backoffice.exec;
  processes.distributed-ticketing.exec = config.scripts.distributed-ticketing.exec;

  # https://devenv.sh/tests/
  enterTest = ''
    echo "Running tests"
    git --version | grep --color=auto "${pkgs.git.version}"
  '';

  # https://devenv.sh/pre-commit-hooks/
  pre-commit.hooks.shellcheck.enable = true;

  # See full reference at https://devenv.sh/reference/options/
}