# Use `gimp-with-plugins` package for GIMP with all plug-ins.
# If you just want a subset of plug-ins, you can specify them explicitly:
# `gimp-with-plugins.override { plugins = with gimpPlugins; [ gap ]; }`.

{ config, lib, pkgs }:

let
  inherit (pkgs) stdenv fetchurl pkg-config intltool glib fetchFromGitHub;
in

lib.makeScope pkgs.newScope (self:

let
  # Use GIMP from the scope.
  inherit (self) gimp;

  pluginDerivation = attrs: let
    name = attrs.name or "${attrs.pname}-${attrs.version}";
  in stdenv.mkDerivation ({
    prePhases = "extraLib";
    extraLib = ''
      installScripts(){
        mkdir -p $out/${gimp.targetScriptDir}/${name};
        for p in "$@"; do cp "$p" -r $out/${gimp.targetScriptDir}/${name}; done
      }
      installPlugin() {
        # The base name of the first argument is the plug-in name and the main executable.
        # GIMP only allows a single plug-in per directory:
        # https://gitlab.gnome.org/GNOME/gimp/-/commit/efae55a73e98389e38fa0e59ebebcda0abe3ee96
        pluginDir=$out/${gimp.targetPluginDir}/$(basename "$1")
        install -Dt "$pluginDir" "$@"
      }
    '';

    # Override installation paths.
    PKG_CONFIG_GIMP_2_0_GIMPLIBDIR = "${placeholder "out"}/${gimp.targetLibDir}";
    PKG_CONFIG_GIMP_2_0_GIMPDATADIR = "${placeholder "out"}/${gimp.targetDataDir}";
  }
  // attrs
  // {
      name = "${gimp.name}-plugin-${name}";
      buildInputs = [
        gimp
        gimp.gtk
        glib
      ] ++ (attrs.buildInputs or []);

      nativeBuildInputs = [
        pkg-config
        intltool
      ] ++ (attrs.nativeBuildInputs or []);
    }
  );

  scriptDerivation = {src, ...}@attrs : pluginDerivation ({
    phases = [ "extraLib" "installPhase" ];
    installPhase = "installScripts ${src}";
  } // attrs);
in
{
  # Allow overriding GIMP package in the scope.
  inherit (pkgs) gimp;

  gap = pluginDerivation {
    /* menu:
       Video
    */
    name = "gap-2.6.0";
    src = fetchurl {
      url = "https://ftp.gimp.org/pub/gimp/plug-ins/v2.6/gap/gimp-gap-2.6.0.tar.bz2";
      sha256 = "1jic7ixcmsn4kx2cn32nc5087rk6g8xsrz022xy11yfmgvhzb0ql";
    };
    NIX_LDFLAGS = "-lm";
    hardeningDisable = [ "format" ];
    meta = with lib; {
      description = "The GIMP Animation Package";
      homepage = "https://www.gimp.org";
      # The main code is given in GPLv3, but it has ffmpeg in it, and I think ffmpeg license
      # falls inside "free".
      license = with licenses; [ gpl3 free ];
    };
  };

  farbfeld = pluginDerivation rec {
    pname = "farbfeld";
    version = "unstable-2019-08-12";

    src = fetchFromGitHub {
      owner = "ids1024";
      repo = "gimp-farbfeld";
      rev = "5feacebf61448bd3c550dda03cd08130fddc5af4";
      sha256 = "1vmw7k773vrndmfffj0m503digdjmkpcqy2r3p3i5x0qw9vkkkc6";
    };

    installPhase = ''
      installPlugin farbfeld
    '';

    meta = {
      description = "Gimp plug-in for the farbfeld image format";
      homepage = "https://github.com/ids1024/gimp-farbfeld";
      license = lib.licenses.mit;
      maintainers = with lib.maintainers; [ sikmir ];
    };
  };

  fourier = pluginDerivation rec {
    /* menu:
       Filters/Generic/FFT Forward
       Filters/Generic/FFT Inverse
    */
    pname = "fourier";
    version = "0.4.3";

    src = fetchurl {
      url = "https://www.lprp.fr/files/old-web/soft/gimp/${pname}-${version}.tar.gz";
      sha256 = "0mf7f8vaqs2madx832x3kcxw3hv3w3wampvzvaps1mkf2kvrjbsn";
    };

    buildInputs = with pkgs; [ fftw ];

    postPatch = ''
      # The tarball contains a prebuilt binary.
      make clean
    '';

    installPhase = ''
      runHook preInstall

      installPlugin fourier

      runHook postInstall
    '';

    meta = with lib; {
      description = "GIMP plug-in to do the fourier transform";
      homepage = "https://people.via.ecp.fr/~remi/soft/gimp/gimp_plugin_en.php3#fourier";
      license = with licenses; [ gpl3Plus ];
    };
  };

  resynthesizer = pluginDerivation rec {
    /* menu:
      Edit/Fill with pattern seamless...
      Filters/Enhance/Heal selection...
      Filters/Enhance/Heal transparency...
      Filters/Enhance/Sharpen by synthesis...
      Filters/Enhance/Uncrop...
      Filters/Map/Style...
      Filters/Render/Texture...
    */
    pname = "resynthesizer";
    version = "2.0.3";
    buildInputs = with pkgs; [ fftw ];
    nativeBuildInputs = with pkgs; [ autoreconfHook ];
    makeFlags = [ "GIMP_LIBDIR=${placeholder "out"}/${gimp.targetLibDir}" ];
    src = fetchFromGitHub {
      owner = "bootchk";
      repo = "resynthesizer";
      rev = "v${version}";
      sha256 = "1jwc8bhhm21xhrgw56nzbma6fwg59gc8anlmyns7jdiw83y0zx3j";
    };
  };

  texturize = pluginDerivation {
    name = "texturize-2.2.2017-07-28";
    src = fetchFromGitHub {
      owner = "lmanul";
      repo = "gimp-texturize";
      rev = "de4367f71e40fe6d82387eaee68611a80a87e0e1";
      sha256 = "1zzvbczly7k456c0y6s92a1i8ph4ywmbvdl8i4rcc29l4qd2z8fw";
    };
    installPhase = "installPlugin src/texturize";
    meta.broken = true; # https://github.com/lmanul/gimp-texturize/issues/1
  };

  waveletSharpen = pluginDerivation {
    /* menu:
      Filters/Enhance/Wavelet sharpen
    */
    name = "wavelet-sharpen-0.1.2";
    NIX_LDFLAGS = "-lm";
    src = fetchurl {
      url = "https://github.com/pixlsus/registry.gimp.org_static/raw/master/registry.gimp.org/files/wavelet-sharpen-0.1.2.tar.gz";
      sha256 = "0vql1k67i21g5ivaa1jh56rg427m0icrkpryrhg75nscpirfxxqw";
    };
    installPhase = "installPlugin src/wavelet-sharpen"; # TODO translations are not copied .. How to do this on nix?
  };

  lqrPlugin = pluginDerivation rec {
    /* menu:
       Layer/Liquid Rescale
    */
    pname = "lqr-plugin";
    version = "0.7.2";
    buildInputs = with pkgs; [ liblqr1 ];
    src = fetchFromGitHub {
      owner = "carlobaldassi";
      repo = "gimp-lqr-plugin";
      rev = "v${version}";
      sha256 = "81ajdZ2zQi/THxnBlSeT36tVTEzrS1YqLGpHMhFTKAo=";
    };
  };

  gmic = pkgs.gmic-qt.override {
    variant = "gimp";
  };

  gimplensfun = pluginDerivation rec {
    version = "unstable-2018-10-21";
    name = "gimplensfun-${version}";

    src = fetchFromGitHub {
      owner = "seebk";
      repo = "GIMP-Lensfun";
      rev = "1c5a5c1534b5faf098b7441f8840d22835592f17";
      sha256 = "1jj3n7spkjc63aipwdqsvq9gi07w13bb1v8iqzvxwzld2kxa3c8w";
    };

    buildInputs = with pkgs; [ lensfun gexiv2 ];

    installPhase = "
      installPlugin gimp-lensfun
    ";

    meta = {
      description = "GIMP plugin to correct lens distortion using the lensfun library and database";

      homepage = "http://lensfun.sebastiankraft.net/";

      license = lib.licenses.gpl3Plus;
      maintainers = [ ];
      platforms = lib.platforms.gnu ++ lib.platforms.linux;
    };
  };

  /* =============== simple script files ==================== */

  # also have a look at enblend-enfuse in all-packages.nix
  exposureBlend = scriptDerivation {
    name = "exposure-blend";
    src = fetchurl {
      url = "http://tir.astro.utoledo.edu/jdsmith/code/eb/exposure-blend.scm";
      sha256 = "1b6c9wzpklqras4wwsyw3y3jp6fjmhnnskqiwm5sabs8djknfxla";
    };
    meta.broken = true;
  };

  lightning = scriptDerivation {
    name = "Lightning";
    src = fetchurl {
      url = "https://github.com/pixlsus/registry.gimp.org_static/raw/master/registry.gimp.org/files/Lightning.scm";
      sha256 = "c14a8f4f709695ede3f77348728a25b3f3ded420da60f3f8de3944b7eae98a49";
    };
  };
})