dotfiles/hm/vim.nix

{ pkgs, lib, config, ... }:
let
  vim-shot-f = pkgs.vimUtils.buildVimPlugin {
    pname = "vim-shot-f";
    version = "2016-02-05";
    src = pkgs.fetchFromGitHub {
      owner = "deris";
      repo = "vim-shot-f";
      rev = "eea71d2a1038aa87fe175de9150b39dc155e5e7f";
      sha256 = "iAPvIs/lhW+w5kFTZKaY97D/kfCGtqKrJVFvZ8cHu+c=";
    };
    meta.homepage = "https://github.com/deris/vim-shot-f";
  };
  quick-scope = pkgs.vimUtils.buildVimPlugin rec {
    pname = "quick-scope";
    version = "2.6.1";
    src = pkgs.fetchFromGitHub {
      owner = "unblevable";
      repo = "quick-scope";
      rev = "v${version}";
      sha256 = "TcA4jZIdnQd06V+JrXGiCMr0Yhm9gB6OMiTSdzMt/Qw=";
    };
    meta.homepage = "https://github.com/unblevable/quick-scope";
  };
in
{

  programs.nixvim = {
    enable = true;
    # Setting a custom base16 theme via nixvim is required so feline works, and
    # because stylix makes a config that otherwise only works with dark
    # polarity.
    colorschemes.base16.colorscheme = "solarized-${config.frogeye.polarity}";
    options = {
      # From https://www.hillelwayne.com/post/intermediate-vim/
      title = true;
      number = true;
      relativenumber = true;
      scrolloff = 10;
      lazyredraw = true; # Do not redraw screen in the middle of a macro. Makes them complete faster.
      cursorcolumn = true;

      ignorecase = true;
      smartcase = true;
      gdefault = true;

      tabstop = 4;
      shiftwidth = 4;
      expandtab = true;

      splitbelow = true;
      visualbell = true;

      updatetime = 250;
      undofile = true;

      # From http://stackoverflow.com/a/5004785/2766106
      list = true;
      listchars = "tab:╾╌,trail:·,extends:↦,precedes:↤,nbsp:_";
      showbreak = "↪";

      wildmode = "longest:full,full";
      wildmenu = true;
    };
    globals = {
      netrw_fastbrowse = 0; # Close the file explorer once you select a file
    };
    plugins = {
      # Catches attention when cursor changed position
      # TODO Unmapped, do I still want to use it?
      specs = {
        enable = true;
        min_jump = 5;
        fader = { builtin = "pulse_fader"; };
        resizer = { builtin = "shrink_resizer"; };
      };

      # Tabline
      barbar.enable = true;

      # Go to whatever
      telescope = {
        enable = true;
        keymaps = {
          gF = "find_files";
          gf = "git_files";
          gB = "buffers";
          gl = "current_buffer_fuzzy_find";
          gL = "live_grep";
          gT = "tags";
          gt = "treesitter";
          gm = "marks";
          gh = "oldfiles";
          gH = "command_history";
          gS = "search_history";
          gC = "commands";
          gr = "lsp_references";
          ge = "diagnostics";
          # ga = "lsp_code_actions";
          # gE = "lsp_workspace_diagnostics";
          # TODO Above makes nvim crash on startup, action is not provided
          gd = "lsp_definitions";
          gs = "lsp_document_symbols";
        };
        defaults = {
          vimgrep_arguments = [
            "${pkgs.ripgrep}/bin/rg"
            "--color=never"
            "--no-heading"
            "--with-filename"
            "--line-number"
            "--column"
            "--smart-case"
          ];
        };
        extensions.fzf-native = {
          enable = true;
          caseMode = "smart_case";
          fuzzy = true;
          overrideFileSorter = true;
          overrideGenericSorter = true;
        };
      };

      # Surrounding pairs
      surround.enable = true; # Change surrounding pairs (e.g. brackets, quotes)

      # Language Server
      lsp = {
        enable = true;
        keymaps = {
          silent = true;
          diagnostic = {
            "<Space>e" = "open_float";
            "[e" = "goto_prev";
            "]e" = "goto_next";
          };
          lspBuf = {
            "gD" = "declaration";
            "K" = "hover";
            "gi" = "implementation";
            "<C-S-k>" = "signature_help";
            "<space>wa" = "add_workspace_folder";
            "<space>wr" = "remove_workspace_folder";
            # "<space>wl" = "list_workspace_folder";
            # TODO Full thing was function() print(vim.inspect(vim.lsp.buf.list_workspace_folder())) end but not sure I'm ever really using this
            # Also makes nvim crash like this, so uncommented
            "<space>D" = "type_definition";
            "<space>rn" = "rename";
            "<space>f" = "format";
            # TODO Full thing was function() vim.lsp.buf.format { async = true } end, so async while this isn't
            # Maybe replace this with lsp-format?
          };
        };
        servers = {
          ansiblels.enable = config.frogeye.dev.ansible; # Ansible
          bashls.enable = true; # Bash
          jsonls.enable = true; # JSON
          lua-ls.enable = true; # Lua (for Neovim debugging)
          perlpls.enable = config.frogeye.dev.perl; # Perl
          pylsp = {
            # Python
            enable = config.frogeye.dev.python;
            settings.plugins = {
              black.enabled = true;
              flake8 = {
                enabled = true;
                maxLineLength = 88; # Compatibility with Black
              };
              isort.enabled = true;
              mccabe.enabled = true;
              pycodestyle = {
                enabled = true;
                maxLineLength = 88; # Compatibility with Black
              };
              pyflakes.enabled = true;
              pylint.enabled = true;
              pylsp_mypy = {
                enabled = true;
                overrides = [
                  "--cache-dir=${config.xdg.cacheHome}/mypy"
                  "--ignore-missing-imports"
                  "--disallow-untyped-defs"
                  "--disallow-untyped-calls"
                  "--disallow-incomplete-defs"
                  "--disallow-untyped-decorators"
                  true
                ];
              };
              # TODO Could add some, could also remove some
            };
          };
          phpactor.enable = config.frogeye.dev.php; # PHP
          rnix-lsp.enable = true; # Nix
          # TODO Something for SQL. sqls is deprecated, sqlls is not in Nixpkgs. Probably needs a DB connection configured anyways?
          yamlls.enable = true; # YAML
          # TODO Check out none-ls
        };
        onAttach = ''
          vim.api.nvim_buf_set_option(bufnr, 'omnifunc', 'v:lua.vim.lsp.omnifunc')
        ''; # Seems needed for auto-completion with nvim-compe
      };
      nvim-lightbulb = {
        # Shows a lightbulb whenever a codeAction is available under the cursor
        enable = true;
        autocmd.enabled = true;
      };
      lspkind.enable = true; # Add icons to LSP completions

      # Treesitter
      treesitter = {
        # Allows for better syntax highlighting
        enable = true;
        incrementalSelection = {
          enable = true;
        };
        # indent = true; # Not very working last time I tried apparently
      };
      # TODO Investigate https://github.com/nvim-treesitter/nvim-treesitter-textobjects
      indent-blankline.enable = true; # TODO integrate with rainbow-delimiters and use more of the options

      undotree.enable = true; # Navigate edition history

      # Git
      fugitive.enable = true; # Git basics
      gitsigns.enable = true; # Show changed lines in the gutter

      # Language-specific
      # dap.enable = true; # Debug Adapter Protocol client # 23.11
      nvim-colorizer.enable = true; # Display colors of color-codes
    };
    extraPlugins = with pkgs.vimPlugins; [
      nvim-scrollview # Scroll bar

      # Status line
      feline-nvim # Customizable status line.
      # TODO Abandonned. Maybe use lualine?

      # Search/replace
      vim-abolish # Regex for words, with case in mind
      vim-easy-align # Aligning lines around a certain character

      # Surrounding pairs
      targets-vim # Better interaction with surrounding pairs

      # f/F mode
      vim-shot-f # Highlight relevant characters for f/F/t/T modes
      quick-scope # Highlight relevant characters for f/F modes one per word but always

      # Registers
      registers-nvim # Show register content when pressing "
      # TODO Doesn't work. Didn't work on Arch either

      # Tags
      vim-gutentags # Generate tags
      symbols-outline-nvim # Show a symbol panel on the right
      # TODO Fails on startup. Same on Arch. Config issue?

      # Language server
      lsp_signature-nvim # Show argument definition when typing a function

      # Treesitter
      nvim-ts-rainbow # Randomly color parenthesis pairs
      # TODO Replace with plugins.rainbow-delimiters

      # Snippets
      vim-vsnip
      vim-vsnip-integ
      friendly-snippets

      # Auto-completion
      nvim-compe
      # TODO Archived. Maybe use nvim-cmp and plugins instead?

      # Git
      fugitive-gitlab-vim # Open files in GitLab
      # TODO Connect it!

      # Language-specific
      tcomment_vim # Language-aware (un)commenting
    ] ++ lib.optionals config.frogeye.extra [
      vim-LanguageTool # Check grammar for human languages
    ] ++ lib.optionals config.programs.pandoc.enable [
      vim-pandoc # Pandoc-specific stuff because there's no LSP for it
      vim-pandoc-syntax
    ] ++ lib.optionals config.frogeye.dev.c [
      nvim-dap # Debug Adapter Protocol client
    ] ++ lib.optionals config.frogeye.dev.ansible [
      ansible-vim # TODO Doesn't have snippets
    ];
    extraConfigLua = lib.strings.concatMapStringsSep "\n" (f: builtins.readFile f) [
      ./vim/feline.lua
      ./vim/symbols-outline-nvim.lua
      ./vim/lsp_signature-nvim.lua
      ./vim/nvim-ts-rainbow.lua
      ./vim/nvim-compe.lua
    ];
    extraConfigVim = ''
      " GENERAL

      " Avoid showing message extra message when using completion
      set shortmess+=c

      command Reload source $MYVIMRC

      " PLUGINS

      " vim-gutentags
      let g:gutentags_cache_dir = expand('~/.cache/nvim/tags')

      " nvim-compe
      " Copy-pasted because I couldn't be bothered
      set completeopt=menuone,noselect

      inoremap <silent><expr> <C-Space> compe#complete()
      inoremap <silent><expr> <CR>      compe#confirm('<CR>')
      inoremap <silent><expr> <C-e>     compe#close('<C-e>')
      inoremap <silent><expr> <C-f>     compe#scroll({ 'delta': +4 })
      inoremap <silent><expr> <C-d>     compe#scroll({ 'delta': -4 })

    '' + lib.optionalString config.frogeye.extra ''
      " languagetool
      let g:languagetool_cmd = "${pkgs.languagetool}/bin/languagetool-commandline"
      " TODO Doesn't work

    '' + lib.optionalString config.programs.pandoc.enable ''
      " vim-pandox
      let g:pandoc#modules#disabled = ["folding"]
      let g:pandoc#spell#enabled = 0
      let g:pandoc#syntax#conceal#use = 0

    '';
    autoCmd = [
      # Turn off relativenumber only for insert mode
      { event = "InsertEnter"; pattern = "*"; command = "set norelativenumber"; }
      { event = "InsertLeave"; pattern = "*"; command = "set relativenumber"; }

      # Additional extensions
      { event = "BufRead"; pattern = "*.jinja"; command = "set filetype=jinja2"; } # TODO Probably GH-specific?
      { event = "BufNewFile"; pattern = "*.jinja"; command = "set filetype=jinja2"; }

      # vim-easy-align: Align Markdown tables
      { event = "FileType"; pattern = "markdown"; command = "vmap <Bar> :EasyAlign*<Bar><Enter>"; }
    ];

    userCommands = {
      # Reload = { command = "source $MYVIRMC"; };
      # TODO Is not working, options is set to nil even though it shouldn't
    };

    keymaps = [
      # GENERAL

      # Allow saving of files as sudo when I forgot to start vim using sudo.
      # From https://stackoverflow.com/a/7078429
      { mode = "c"; key = "w!!"; action = "w !sudo tee > /dev/null %"; }

      { mode = "i"; key = "jk"; action = "<Esc>"; }
      { mode = "v"; key = "<Enter>"; action = "<Esc>"; }
      { key = "<Enter>"; action = "o<Esc>"; }

      # { key = "<C-H>"; action = ":bp<CR>"; }
      # { key = "<C-L>"; action = ":bn<CR>"; }
      { key = "<C-K>"; action = "kkkkkkkkkkkkkkkkkkkkk"; }
      { key = "<C-J>"; action = "jjjjjjjjjjjjjjjjjjjjj"; }

      # \s to replace globally the word under the cursor
      { key = "<Leader>s"; action = ":%s/\\<<C-r><C-w>\\>/"; }

      # PLUGINS

      # barbar
      { key = "<C-H>"; action = "<Cmd>BufferPrevious<CR>"; options = { silent = true; }; }
      { key = "<C-L>"; action = "<Cmd>BufferNext<CR>"; options = { silent = true; }; }
      # TODO https://www.reddit.com/r/neovim/comments/mbj8m5/how_to_setup_ctrlshiftkey_mappings_in_neovim_and/
      { key = "<Space><C-H>"; action = "<Cmd>BufferMovePrevious<CR>"; options = { silent = true; }; }
      { key = "<Space><C-L>"; action = "<Cmd>BufferMoveNext<CR>"; options = { silent = true; }; }
      # TODO gotos don't work
      { key = "<C-1>"; action = "<Cmd>BufferGoto 1<CR>"; options = { silent = true; }; }
      { key = "<C-2>"; action = "<Cmd>BufferGoto 2<CR>"; options = { silent = true; }; }
      { key = "<C-3>"; action = "<Cmd>BufferGoto 3<CR>"; options = { silent = true; }; }
      { key = "<C-4>"; action = "<Cmd>BufferGoto 4<CR>"; options = { silent = true; }; }
      { key = "<C-5>"; action = "<Cmd>BufferGoto 5<CR>"; options = { silent = true; }; }
      { key = "<C-6>"; action = "<Cmd>BufferGoto 6<CR>"; options = { silent = true; }; }
      { key = "<C-7>"; action = "<Cmd>BufferGoto 7<CR>"; options = { silent = true; }; }
      { key = "<C-8>"; action = "<Cmd>BufferGoto 8<CR>"; options = { silent = true; }; }
      { key = "<C-9>"; action = "<Cmd>BufferGoto 9<CR>"; options = { silent = true; }; }
      { key = "<C-0>"; action = "<Cmd>BufferLast<CR>"; options = { silent = true; }; }
      { key = "gb"; action = "<Cmd>BufferPick<CR>"; options = { silent = true; }; }
      # TODO Other useful options?

      # symbols-outline-nvim
      { key = "<Space>s"; action = "<Cmd>SymbolsOutline<CR>"; options = { silent = true; }; }

      # undotree
      { key = "<Space>u"; action = "<Cmd>UndotreeToggle<CR>"; options = { silent = true; }; }

    ];
  };
}