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

{
  #################################################
  # Packages
  #################################################
  home.packages = with pkgs; [
    zathura
    ripgrep
    fd
    lazygit
  ];

  #################################################
  # Neovim
  #################################################
  programs.neovim = {
    enable = true;
    defaultEditor = true;
    viAlias = true;
    vimAlias = true;

    #################################################
    # Plugins
    #################################################
    plugins = with pkgs.vimPlugins; [

      # UI / Theme
      catppuccin-nvim
      nvim-web-devicons
      which-key-nvim

      # Syntax (IDE-style highlighting)
      (nvim-treesitter.withPlugins (p: [
        p.lua
        p.nix
        p.rust
        p.python
        p.bash
        p.latex
        p.c
      ]))

      # File Navigation
      telescope-nvim
      plenary-nvim
      nvim-tree-lua

      # Terminal / Git
      toggleterm-nvim

      # Writing / LaTeX
      vimtex
      orgmode

      # Start screen
      {
        plugin = vim-startify;
        config = "let g:startify_change_to_vcs_root = 0";
      }
    ];

    #################################################
    # Lua Configuration
    #################################################
    extraLuaConfig = ''
      -------------------------------------------------
      -- LEADER
      -------------------------------------------------
      vim.g.mapleader = " "

      -------------------------------------------------
      -- BASIC OPTIONS
      -------------------------------------------------
      vim.opt.number = true
      vim.opt.relativenumber = true
      vim.opt.clipboard = "unnamedplus"
      vim.opt.showtabline = 2

      vim.o.timeout = true
      vim.o.timeoutlen = 300

      -------------------------------------------------
      -- THEME
      -------------------------------------------------
      require("catppuccin").setup({
        flavour = "mocha",
        transparent_background = false,
      })
      vim.cmd.colorscheme("catppuccin")

      -------------------------------------------------
      -- TREESITTER (IDE-style syntax highlighting)
      -------------------------------------------------
      require("nvim-treesitter.configs").setup({
        highlight = {
          enable = true,
          additional_vim_regex_highlighting = false,
        },
        indent = { enable = true },
        incremental_selection = {
          enable = true,
          keymaps = {
            init_selection = "<C-space>",
            node_incremental = "<C-space>",
            node_decremental = "<bs>",
          },
        },
      })

      -------------------------------------------------
      -- TELESCOPE
      -------------------------------------------------
      local builtin = require("telescope.builtin")

      require("telescope").setup({
        defaults = {
          layout_strategy = "horizontal",
          layout_config = { prompt_position = "top" },
          sorting_strategy = "ascending",
        },
      })

      vim.keymap.set("n", "<leader><leader>", builtin.find_files)
      vim.keymap.set("n", "<leader>ff", builtin.find_files)
      vim.keymap.set("n", "<leader>fg", builtin.live_grep)
      vim.keymap.set("n", "<leader>fb", builtin.buffers)
      vim.keymap.set("n", "<leader>fh", builtin.help_tags)

      -------------------------------------------------
      -- WHICH-KEY
      -------------------------------------------------
      require("which-key").setup({})

      -------------------------------------------------
      -- TABS
      -------------------------------------------------
      vim.keymap.set("n", "gt", "<cmd>tabnew<CR>")
      vim.keymap.set("n", "gc", "<cmd>tabclose<CR>")
      vim.keymap.set("n", "gn", "<cmd>tabnext<CR>")
      vim.keymap.set("n", "gp", "<cmd>tabprevious<CR>")
      vim.keymap.set("n", "g0", "<cmd>tabfirst<CR>")
      vim.keymap.set("n", "g$", "<cmd>tablast<CR>")

      -------------------------------------------------
      -- NVIM-TREE
      -------------------------------------------------
      require("nvim-tree").setup({
        view = { width = 30, side = "left" },

        renderer = { group_empty = true },

        filters = {
          dotfiles = false,
          git_ignored = true,
        },

        git = {
          enable = true,
          ignore = true,
        },

        on_attach = function(bufnr)
          local api = require("nvim-tree.api")

          local function opts(desc)
            return {
              desc = "nvim-tree: " .. desc,
              buffer = bufnr,
              noremap = true,
              silent = true,
              nowait = true,
            }
          end

          api.config.mappings.default_on_attach(bufnr)

          -- open file in new tab
          vim.keymap.set("n", "t", function()
            local node = api.tree.get_node_under_cursor()
            if node and node.type == "file" then
              vim.cmd("tabnew " .. node.absolute_path)
            end
          end, opts("Open in new tab"))
        end,
      })

      vim.keymap.set("n", "<leader>e", "<cmd>NvimTreeToggle<CR>")

      -------------------------------------------------
      -- TOGGLETERM + LAZYGIT
      -------------------------------------------------
      require("toggleterm").setup({
        direction = "float",
        float_opts = { border = "rounded" },
      })

      local Terminal = require("toggleterm.terminal").Terminal

      local lazygit = Terminal:new({
        cmd = "lazygit",
        hidden = true,
        direction = "float",
        float_opts = { border = "rounded" },
      })

      vim.keymap.set("n", "<leader>gg", function()
        lazygit:toggle()
      end)

      -------------------------------------------------
      -- ORGMODE
      -------------------------------------------------
      require("orgmode").setup({
        org_agenda_files = { "~/Documents/2. Writing/0. SOČ/org/*.org" },
        org_default_notes_file = "~/Documents/2. Writing/0. SOČ/org/index.org",
      })

      -------------------------------------------------
      -- VIMTEX
      -------------------------------------------------
      vim.g.vimtex_view_method = "zathura"
      vim.g.vimtex_compiler_latexmk = {
        executable = "latexmk",
        options = {
          "-pdf",
          "-interaction=nonstopmode",
          "-synctex=1",
          "-file-line-error",
        },
      }
      vim.g.vimtex_syntax_enabled = 0

      vim.api.nvim_create_autocmd("FileType", {
        pattern = "tex",
        callback = function()
          vim.opt_local.wrap = true
          vim.opt_local.linebreak = true
          vim.opt_local.breakindent = true
          vim.opt_local.textwidth = 0
        end,
      })
    '';
  };
}