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

with lib;

let
  typewritten-theme = pkgs.fetchFromGitHub {
    owner = "reobin";
    repo = "typewritten";
    rev = "0eebac711e98ee759942ed82f8c20e92912e2cc7";
    sha256 = "0ncc1zjimapw9p64lnk91828ik4y5gxcn0awjcw0l8fzv6vi0ax5";
  };

  git-plan = pkgs.rustPlatform.buildRustPackage rec {
    name = "git-plan";
    version = "1";
    src = pkgs.fetchFromGitLab {
      owner = "haaksmash";
      repo = "git-plan";
      rev = "518dcf15f3a46605f18569dd69b3b63d763e9439";
      sha256 = "06gh3v35bdr0qsp459183br4hpmwm36d2r9fjyx9j5jfpzggqg51";
    };

    cargoSha256 = "1aqjgfpqsasy9qvw08ill7ig6k9n9rdkwxlg1z5g61z7cmi1p3i4";
    buildInputs = [ pkgs.pkg-config pkgs.openssl ] ++ (if pkgs.stdenv.isDarwin then [ pkgs.libiconv pkgs.darwin.apple_sdk.frameworks.Security ] else []);
  };
in {
  home.packages = with pkgs; [
    direnv
    git-plan
    htop
    jq
    keybase
    lastpass-cli
    nox
    tree
    ranger
    ripgrep
    zsh-autosuggestions
    zsh-history-substring-search
    zsh-syntax-highlighting
  ];

  programs.direnv = {
    enable = true;
    stdlib = ''
      layout_postgres() {
        export PGDATA="$(direnv_layout_dir)/tmp/pgdata"
        export PGHOST="$PGDATA"
        if [[ ! -d "$PGDATA" ]]; then
          initdb --locale=$LANG
          cat <<EOF >>"$PGDATA/postgresql.conf"
      listen_addresses = 'localhost'
      unix_socket_directories = '$PGHOST'
      EOF
          echo "CREATE DATABASE $USER;" | postgres --single -E postgres
        fi
      }

      layout_go() {
        export GOPATH="$(direnv_layout_dir)/tmp/golibs"
        if [[ ! -d "$GOPATH" ]]; then
          mkdir -p $GOPATH
        fi

        export PATH="$GOPATH/bin:$PATH"
      }
    '';
  };

  programs.git = {
    enable = true;
    userName = "Haak Saxberg";
    userEmail = "haak.erling@gmail.com";
    ignores = [
      ".idea/"
      ".direnv/"
      ".git-plans/"
      ".envrc"
      ".tools-info"
      "*~"
      "*.swp"
    ];
  };

  programs.zsh = {
    enable = true;
    enableCompletion = true;
    defaultKeymap = "viins";

    initExtra = mkForce (''
      export LOCALE_ARCHIVE="/usr/lib/locale/locale-archive"
      export NIX_PATH=$HOME/.nix-defexpr/channels:$NIX_PATH
      export EDITOR=vim

      source $HOME/.nix-profile/etc/profile.d/nix.sh
      source $HOME/.nix-profile/share/fzf/key-bindings.zsh
      source $HOME/.nix-profile/share/fzf/completion.zsh
      source $HOME/.nix-profile/share/zsh-autosuggestions/zsh-autosuggestions.zsh
      source $HOME/.nix-profile/share/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh
      source $HOME/.config/zsh/local.zsh

      bindkey '^[[A' history-substring-search-up
      bindkey '^[[B' history-substring-search-down
      bindkey -M viins 'jj' vi-cmd-mode

      # utility for storing functions under a new name
      save_function() {
        local ORIG_FUNC=$(declare -f $1)
        local NEWNAME_FUNC="$2''${ORIG_FUNC#$1}"
        eval "$NEWNAME_FUNC"
      }

      # Override an oh-my-zsh/lib/git.sh function so that old repositories
      # don't slow the shell down
      save_function git_prompt_status old_git_prompt_status
      function git_prompt_status() {
        if [[ "$(command git config --get oh-my-zsh.hide-status 2>/dev/null)" != "1" ]]; then
          old_git_prompt_status
        fi
      }

      eval "$(direnv hook zsh)"
    '');

    oh-my-zsh = {
      enable = true;
      theme = "typewritten";
      custom = "$HOME/.oh-my-zsh/custom";
      plugins = [
        "vi-mode"
        "git"
        "z"
        "tmuxinator"
      ];
    };
  };

  programs.neovim = {
    enable = true;
    vimAlias = true;
    withPython = true;
    plugins = with pkgs.vimPlugins; [
      vim-polyglot
      vim-sensible
      vim-startify
      alchemist-vim
      vimtex
      vim-airline
      rainbow
      vim-signify
      vim-indent-guides
      vim-surround
      fugitive
      easymotion
      tagbar
      vinegar
      undotree
      vim-test
      ale
      fzf-vim
      fzfWrapper
      LanguageClient-neovim
      deoplete-nvim
      papercolor-theme
    ];

    extraConfig = ''
      filetype plugin indent on

      " ALE
      let g:ale_fix_on_save = 1
      let g:ale_fixers = {
        \ 'elm': ['elm-format', 'format'],
        \ 'javascript': ['prettier'],
        \ 'javascript.jsx': ['prettier'],
        \ 'javascriptreact': ['prettier'],
        \ 'typescriptreact': ['prettier'],
        \}

      " Easymotion
      map / <Plug>(easymotion-sn)
      omap / <Plug>(easymotion-tn)
      map n <Plug>(easymotion-next)
      map N <Plug>(easymotion-prev)
      let g:EasyMotion_landing_highlight = 0

      " Rainbow parentheses
      let g:rainbow_conf = {
      \ 'guifgs': ['RoyalBlue3', 'SeaGreen3', 'DarkOrchid3', 'firebrick3', 'RoyalBlue3', 'SeaGreen3', 'DarkOrchid3', 'firebrick3', 'RoyalBlue3', 'DarkOrchid3', 'firebrick3', 'RoyalBlue3', 'SeaGreen3', 'DarkOrchid3', 'firebrick3'],
      \ 'ctermfgs': ['red', 'brown', 'blue', 'gray', 'green', 'magenta', 'cyan', 'darkred', 'brown', 'darkblue', 'gray', 'darkgreen', 'darkmagenta', 'darkcyan', 'red'],
      \ 'parentheses': ['start=/(/ end=/)/ fold', 'start=/\[/ end=/\]/ fold', 'start=/{/ end=/}/ fold']
      \}
      let g:rainbow_active = 1

      " Vim-Test
      nmap <silent> <leader>t :TestNearest<CR>
      nmap <silent> <leader>T :TestFile<CR>
      nmap <silent> <leader>a :TestSuite<CR>
      nmap <silent> <leader>l :TestLast<CR>
      nmap <silent> <leader>g :TestVisit<CR>
      let test#strategy = "neovim"

      " Deoplete
      let g:deoplete#enable_at_startup = 1

      " LanguageClient-neovim
      let g:LanguageClient_serverCommands = {
        \ 'elm': ['elm-language-server', '--stdio'],
        \ 'javascript': ['flow', 'lsp'],
        \ 'javascript.jsx': ['flow', 'lsp'],
        \ 'javascriptreact': ['flow', 'lsp'],
        \ }

      let g:LanguageClient_rootMarkers = {
        \ 'elm': ['elm.json'],
        \ 'typescriptreact': ['tsconfig.json'],
        \ }

      let g:LanguageClient_loggingFile =  expand('~/.local/share/nvim/LanguageClient.log')

      nnoremap <leader>t :call LanguageClient_textDocument_hover()<CR>
      nnoremap <leader>y :call LanguageClient_textDocument_definition()<CR>

      " Indent guides
      let g:indent_guides_enable_on_vim_startup = 1
      let g:indent_guides_start_level = 2

      " let netrw look like NERDTree
      let g:netrw_liststyle = 3
      let mapleader=","
      set nobackup
      set noswapfile
      set pastetoggle=<F2>
      set nowrap

      set background=dark
      colorscheme PaperColor

      set nocompatible
      set number relativenumber
      set numberwidth=1
      set cursorline
      set cursorcolumn
      set ruler
      set list
      set listchars=tab:>-,trail:-,extends:>,precedes:<,nbsp:+,eol:$
      set matchpairs+=<:>
      set ts=2
      set shiftwidth=2
      set expandtab

      " Open new split panes to right and bottom, which feels more natural
      set splitbelow
      set splitright

      """ Searching and Patterns
      set ignorecase
      set smartcase
      set smarttab
      set hlsearch
      " Add the g flag to search/replace by default
      set gdefault

      "recalculate the trailing whitespace warning when idle, and after saving
      autocmd cursorhold,bufwritepost * unlet! b:statusline_trailing_space_warning

      " strip trailing whitespace
      autocmd BufWritePre * :%s/\s\+$//e

      """ Handy remaps
      noremap ; :
      inoremap jj <Esc>
      map <silent> <leader>V :source ~/.config/nvim/init.vim<CR>:filetype detect<CR>:exe ":echo 'vimrc reloaded'"<CR>
      map \q :q<CR>
      map \w :w<CR>
      noremap Q <nop>

      """ Esperanto digraphs (for use with ctrl-k)
      :digraph Cx 264
      :digraph cx 265
      :digraph Gx 284
      :digraph gx 285
      :digraph Hx 292
      :digraph hx 293
      :digraph Jx 308
      :digraph jx 309
      :digraph Sx 348
      :digraph sx 349
      :digraph Ux 364
      :digraph ux 365

      """ Terminal mode remaps
      tnoremap <Esc> <C-\><C-n>
      nnoremap <leader>o :below 10sp term://$SHELL<cr>i

      " Quicker window movement
      nnoremap <C-j> <C-w>j
      nnoremap <C-k> <C-w>k
      nnoremap <C-h> <C-w>h
      nnoremap <C-l> <C-w>l

      " Don’t reset cursor to start of line when moving around.
      set nostartofline
      " minimal number of lines to keep above/below cursorline
      set scrolloff=10

      " Local overrides?
      if filereadable($HOME . "/.vimrc.local")
        source ~/.vimrc.local
      endif
    '';
  };

  programs.tmux = {
    enable = true;
    tmuxinator = {
      enable = true;
    };
    secureSocket = false;
  };

  programs.fzf = {
    enable = true;
    enableZshIntegration = true;
    defaultCommand = "rg --no-ignore --follow --files --hidden --smart-case --glob \\\"!.git/*\\\"";
  };

  # Let Home Manager install and manage itself.
  programs.home-manager.enable = true;

  home.file.".tmux.conf" = {
    source = ./tmux/tmux.conf;
  };

  home.file.".oh-my-zsh/custom/themes" = {
    source = typewritten-theme;
  };
}