nvf/modules/plugins/languages/dockerfile.nix

{
  config,
  pkgs,
  lib,
  ...
}: let
  inherit (builtins) attrNames;
  inherit (lib.meta) getExe;
  inherit (lib.options) mkEnableOption mkOption;
  inherit (lib.modules) mkIf mkMerge;
  inherit (lib.types) enum package;
  inherit (lib.nvim.types) mkGrammarOption diagnostics singleOrListOf;
  inherit (lib.nvim.attrsets) mapListToAttrs;

  cfg = config.vim.languages.dockerfile;

  defaultServers = ["docker-language-server"];
  servers = {
    docker-language-server = {
      cmd = [(getExe pkgs.docker-language-server) "start" "--stdio"];
      filetypes = ["dockerfile" "yaml.docker-compose"];
      root_markers = [
        "Dockerfile"
        "docker-compose.yaml"
        "docker-compose.yml"
        "compose.yaml"
        "compose.yml"
        "docker-bake.json"
        "docker-bake.hcl"
      ];
    };
  };

  defaultFormat = "dockerfmt";
  formats = {
    dockerfmt = {
      package = pkgs.dockerfmt;
    };
  };

  defaultDiagnosticsProvider = ["hadolint"];
  diagnosticsProviders = {
    hadolint = {
      config.cmd = getExe (pkgs.writeShellApplication {
        name = "hadolint";
        runtimeInputs = [pkgs.hadolint];
        text = "hadolint -";
      });
    };
  };
in {
  options.vim.languages.dockerfile = {
    enable = mkEnableOption "Dockerfile language support";
    treesitter = {
      enable = mkEnableOption "Dockerfile treesitter support";
      package = mkGrammarOption pkgs "dockerfile";
    };

    lsp = {
      enable = mkEnableOption "Dockerfile LSP support" // {default = config.vim.lsp.enable;};
      servers = mkOption {
        type = singleOrListOf (enum (attrNames servers));
        default = defaultServers;
        description = "Dockerfile LSP server to use";
      };
    };

    format = {
      enable = mkEnableOption "Dockerfile formatting" // {default = config.vim.languages.enableFormat;};

      type = mkOption {
        type = enum (attrNames formats);
        default = defaultFormat;
        description = "Dockerfile formatter to use";
      };

      package = mkOption {
        type = package;
        default = formats.${cfg.format.type}.package;
        description = "Dockerfile formatter package";
      };
    };

    extraDiagnostics = {
      enable = mkEnableOption "extra Dockerfile diagnostics" // {default = config.vim.languages.enableExtraDiagnostics;};

      types = diagnostics {
        langDesc = "Dockerfile";
        inherit diagnosticsProviders;
        inherit defaultDiagnosticsProvider;
      };
    };
  };

  config = mkMerge [
    (mkIf cfg.treesitter.enable {
      vim.treesitter = {
        enable = true;
        grammars = [cfg.treesitter.package];
      };
    })

    (mkIf cfg.lsp.enable {
      vim.lsp.servers =
        mapListToAttrs (n: {
          name = n;
          value = servers.${n};
        })
        cfg.lsp.servers;
    })

    (mkIf (cfg.format.enable) {
      vim.formatter.conform-nvim = {
        enable = true;
        setupOpts.formatters_by_ft.dockerfile = [cfg.format.type];
        setupOpts.formatters.${cfg.format.type} = {
          command = getExe cfg.format.package;
        };
      };
    })

    (mkIf cfg.extraDiagnostics.enable {
      vim.diagnostics.nvim-lint = {
        enable = true;
        linters_by_ft.dockerfile = cfg.extraDiagnostics.types;
        linters = mkMerge (map (name: {
          ${name} = diagnosticsProviders.${name}.config;
        })
        cfg.extraDiagnostics.types);
      };
    })
  ];
}