nixos/home/common/core/nixvim.nix

{ inputs, pkgs, ... }: {
  imports = [
    inputs.nixvim.homeManagerModules.nixvim
  ];

  programs.nixvim = {
    enable = true;
    enableMan = true; # install man pages for nixvim options

    clipboard.register = "unnamedplus"; # use system clipboard instead of internal registers

    colorschemes.kanagawa = {
      enable = true;
      settings = {
        commentStyle = {
          italic = true;
        };
        dimInactive = true;
        terminalColors = true;
        theme = "wave";
        transparent = false;
        undercurl = true;
      };
    };

    opts = {
      #
      # ========= General Appearance =========
      #
      background = "";
      number = true; # show line numbers
      relativenumber = true; # show relative linenumbers
      laststatus = 0; # Display status line always
      history = 1000; # Store lots of :cmdline history
      showcmd = true; # Show incomplete cmds down the bottom
      showmode = true; # Show current mode down the bottom
      autoread = true; # Reload files changed outside vim
      lazyredraw = true; # Redraw only when needed
      showmatch = true; # highlight matching braces
      ruler = true; # show current line and column
      visualbell = true; # No sounds

      listchars = "trail:·"; # Display tabs and trailing spaces visually

      # ========= Font =========
      guifont = "NotoSansMono:h9"; # fontname:fontsize

      # ========= Cursor =========
      guicursor = "n-v-c-sm:block,i-ci-ve:ver25,r-cr-o:hor20,n-v-i:blinkon0";

      # ========= Redirect Temp Files =========
      # backup
      backupdir = "$HOME/.local/state/vim/backup//,/tmp//,.";
      writebackup = false;
      # swap
      directory = "$HOME/.local/vim/swap//,/tmp//,.";

      # ================ Indentation ======================
      autoindent = true;
      cindent = true; # automatically indent braces
      smartindent = true;
      smarttab = true;
      shiftwidth = 2;
      softtabstop = 4;
      tabstop = 2;
      expandtab = true;

      # ================ Folds ============================
      foldmethod = "indent"; # fold based on indent
      foldnestmax = 3; # deepest fold is 3 levels
      foldenable = false; # don't fold by default

      # ================ Completion =======================
      wildmode = "list:longest";
      wildmenu = true; # enable ctrl-n and ctrl-p to scroll thru matches

      # stuff to ignore when tab completing
      wildignore = "*.o,*.obj,*~,vim/backups,sass-cache,DS_Store,vendor/rails/**,vendor/cache/**,*.gem,log/**,tmp/**,*.png,*.jpg,*.gif";

      # ================ Scrolling ========================
      scrolloff = 4; # Start scrolling when we're 4 lines away from margins
      sidescrolloff = 15;
      sidescroll = 1;

      # ================ Searching ========================
      incsearch = true;
      hlsearch = true;
      ignorecase = true;
      smartcase = true;

      # ================ Movement ========================
      backspace = "indent,eol,start"; # allow backspace in insert mode
    };

    #
    # ========= UI Plugins =========
    #

    plugins.nvim-colorizer = {
      enable = true;
      fileTypes = [ "*" ];
    };

    plugins.lualine = {
      enable = true;
      theme = "auto";
      componentSeparators = {
        left = "";
        right = "";
      };
      sectionSeparators = {
        left = "";
        right = "";
      };
      sections = {
        lualine_a = [ "mode" ];
        lualine_b = [ "branch" "diff" "diagnostics" ];
        lualine_c = [ "filename" ];
        lualine_x = [ "encoding" "fileformat" "filetype" ];
        lualine_y = [ "progress" ];
        lualine_z = [ "locations" ];
      };
    };

    #
    # ========= File Search =========
    #
    plugins.telescope = {
      # https://github.com/nvim-telescope/telescope.nvim
      enable = true;
      extensions.fzy-native.enable = true;
    };

    # ========= File Nav ===========
    #
    plugins.harpoon = {
      enable = true;
      keymaps = {
        toggleQuickMenu = "<leader>b";
      };
    };

    plugins.nvim-tree = {
      enable = true;
      view.width = {
        min = 30;
        max = -1;
        padding = 1;
      };
      disableNetrw = true;
      filters.dotfiles = true;

    };

    #
    # ========== Dev Tools =========
    #
    plugins.surround.enable = true; # vim-surround

    plugins.gitsigns = {
      enable = true;
      settings.signs.add = {
        hl = "GitSignsAdd";
        text = " ▎";
        numhl = "GitSignsAddNr";
        linehl = "GitSignsAddLn";
      };
      settings.signs.change = {
        hl = "GitSignsChange";
        text = " ▎";
        numhl = "GitSignsChangeNr";
        linehl = "GitSignsChangeLn";
      };
      settings.signs.delete = {
        hl = "GitSignsDelete";
        text = " ●";
        numhl = "GitSignsDeleteNr";
        linehl = "GitSignsDeleteLn";
      };
      settings.signs.topdelete = {
        hl = "GitSignsDelete";
        text = " ●";
        numhl = "GitSignsDeleteNr";
        linehl = "GitSignsDeleteLn";
      };
      settings.signs.changedelete = {
        hl = "GitSignsChange";
        text = " ▎";
        numhl = "GitSignsChangeNr";
        linehl = "GitSignsChangeLn";
      };
    };

    # Load Plugins that aren't provided as modules by nixvim
    extraPlugins = builtins.attrValues {
      inherit (pkgs.vimPlugins)
        ale
        vim-numbertoggle# Use relative number on focused buffer only
        vimade# Dim unfocused buffers
        vimwiki# Vim Wiki
        YouCompleteMe# Code completion engine
        vim-dadbod
        vim-dadbod-ui

        # Keep vim-devicons as last entry
        vim-devicons;
    };

    # ========= Mapleader =========
    globals.mapleader = ";";

    #
    # ========= Key binds =========
    #
    keymaps = [
      # Switching windows
      {
        mode = [ "n" ];
        action = "<C-W>h";
        key = "<S-h>";
        options = {
          silent = true;
        };
      }
      {
        mode = [ "n" ];
        action = "<C-W>j";
        key = "<S-j>";
        options = {
          silent = true;
        };
      }
      {
        mode = [ "n" ];
        action = "<C-W>k";
        key = "<S-k>";
        options = {
          silent = true;
        };
      }
      {
        mode = [ "n" ];
        action = "<C-W>l";
        key = "<S-l>";
        options = {
          silent = true;
        };
      }
      # Toggle nvim-tree
      {
        mode = [ "n" ];
        action = "<cmd>NvimTreeFindFileToggle<CR>";
        key = "tt";
        options = {
          silent = true;
        };
      }
      {
        # clear search highlighting
        mode = [ "n" ];
        key = "<space><space>";
        action = "<cmd>nohlsearch<CR>";
        options = { noremap = true; };
      }

      # ========== Telescope Plugin =========
      {
        # find files
        mode = [ "n" ];
        key = "<Leader>ff";
        action = "<cmd>Telescope find_files<CR>";
        options = { noremap = true; };
      }
      {
        # live grep
        mode = [ "n" ];
        key = "<Leader>fg";
        action = "<cmd>Telescope live_grep<CR>";
        options = { noremap = true; };
      }
      {
        # buffers
        mode = [ "n" ];
        key = "<Leader>fb";
        action = "<cmd>Telescope buffers<CR>";
        options = { noremap = true; };
      }
      {
        # help tags
        mode = [ "n" ];
        key = "<Leader>fh";
        action = "<cmd>Telescope help_tags<CR>";
        options = { noremap = true; };
      }

    ];
    extraConfigVim = ''
      " ================ Persistent Undo ==================
      " Keep undo history across sessions, by storing in file.
      " Only works all the time.
      if has('persistent_undo')
          silent !mkdir ~/.vim/backups > /dev/null 2>&1
          set undodir=~/.vim/backups
          set undofile
      endif

      " ================ Vim Wiki config =================
      " See :h vimwiki_list for info on registering wiki paths
      let wiki_0 = {}
      let wiki_0.path = '~/dotfiles.wiki/'
      let wiki_0.index = 'home'
      let wiki_0.syntax = 'markdown'
      let wiki_0.ext = '.md'

      " fill spaces in page names with _ in pathing
      let wiki_0.links_space_char = '_'

      " ================ Ale ========================
      " linter and fixer packages have to be installed via AUR or pamac
      let g:ale_linters = {
                  \ 'c': ['clang-tidy'],
                  \ 'python': ['flake8'],
                  \ 'vim': ['vint'],
                  \ 'markdown': ['markdownlint'],
      \ }

      let g:ale_fixers = {
            \ 'c': ['clang-format'],
            \ 'javascript': ['prettier', 'eslint'],
            \ 'json': ['fixjson', 'prettier'],
            \ 'python': ['black', 'isort'],
            \ }

      " Set global fixers for all file types except Markdown
      " Why? because double spaces at the end of a line in markdown indicate a
      " linebreak without creating a new paragraph
      function! SetGlobalFixers()
        let g:ale_fixers['*'] = ['trim_whitespace', 'remove_trailing_lines']
      endfunction

      augroup GlobalFixers
        autocmd!
        autocmd VimEnter * call SetGlobalFixers()
      augroup END

      " Set buffer-local fixers for Markdown files
      augroup MarkdownFixers
        autocmd!
        autocmd FileType markdown let b:ale_fixers = ['prettier']
      augroup END

      let g:ale_fix_on_save = 1
    '';

  };
}