dev/vim/config/nvim/lua/plugins/neo-tree.lua

return {
  "nvim-neo-tree/neo-tree.nvim",
  branch = "main", -- HACK: force neo-tree to checkout `main` for initial v3 migration since default branch has changed
  dependencies = { "MunifTanjim/nui.nvim" },
  cmd = "Neotree",
  init = function() vim.g.neo_tree_remove_legacy_commands = true end,
  opts = function()
    local utils = require "astronvim.utils"
    local get_icon = utils.get_icon
    return {
      auto_clean_after_session_restore = true,
      close_if_last_window = true,
      sources = { "filesystem", "buffers", "git_status" },
      source_selector = {
        winbar = true,
        content_layout = "center",
        sources = {
          { source = "filesystem", display_name = get_icon("FolderClosed", 1, true) .. "File" },
          { source = "buffers", display_name = get_icon("DefaultFile", 1, true) .. "Bufs" },
          { source = "git_status", display_name = get_icon("Git", 1, true) .. "Git" },
          { source = "diagnostics", display_name = get_icon("Diagnostic", 1, true) .. "Diagnostic" },
        },
      },
      default_component_configs = {
        indent = { padding = 0 },
        icon = {
          folder_closed = get_icon "FolderClosed",
          folder_open = get_icon "FolderOpen",
          folder_empty = get_icon "FolderEmpty",
          folder_empty_open = get_icon "FolderEmpty",
          default = get_icon "DefaultFile",
        },
        modified = { symbol = get_icon "FileModified" },
        git_status = {
          symbols = {
            added = get_icon "GitAdd",
            deleted = get_icon "GitDelete",
            modified = get_icon "GitChange",
            renamed = get_icon "GitRenamed",
            untracked = get_icon "GitUntracked",
            ignored = get_icon "GitIgnored",
            unstaged = get_icon "GitUnstaged",
            staged = get_icon "GitStaged",
            conflict = get_icon "GitConflict",
          },
        },
      },
      commands = {
        system_open = function(state)
          -- TODO: just use vim.ui.open when dropping support for Neovim <0.10
          (vim.ui.open or require("astronvim.utils").system_open)(state.tree:get_node():get_id())
        end,
        parent_or_close = function(state)
          local node = state.tree:get_node()
          if (node.type == "directory" or node:has_children()) and node:is_expanded() then
            state.commands.toggle_node(state)
          else
            require("neo-tree.ui.renderer").focus_node(state, node:get_parent_id())
          end
        end,
        child_or_open = function(state)
          local node = state.tree:get_node()
          if node.type == "directory" or node:has_children() then
            if not node:is_expanded() then -- if unexpanded, expand
              state.commands.toggle_node(state)
            else -- if expanded and has children, seleect the next child
              require("neo-tree.ui.renderer").focus_node(state, node:get_child_ids()[1])
            end
          else -- if not a directory just open it
            state.commands.open(state)
          end
        end,
        copy_selector = function(state)
          local node = state.tree:get_node()
          local filepath = node:get_id()
          local filename = node.name
          local modify = vim.fn.fnamemodify

          local results = {
            e = { val = modify(filename, ":e"), msg = "Extension only" },
            f = { val = filename, msg = "Filename" },
            F = { val = modify(filename, ":r"), msg = "Filename w/o extension" },
            h = { val = modify(filepath, ":~"), msg = "Path relative to Home" },
            p = { val = modify(filepath, ":."), msg = "Path relative to CWD" },
            P = { val = filepath, msg = "Absolute path" },
          }

          local messages = {
            { "\nChoose to copy to clipboard:\n", "Normal" },
          }
          for i, result in pairs(results) do
            if result.val and result.val ~= "" then
              vim.list_extend(messages, {
                { ("%s."):format(i), "Identifier" },
                { (" %s: "):format(result.msg) },
                { result.val, "String" },
                { "\n" },
              })
            end
          end
          vim.api.nvim_echo(messages, false, {})
          local result = results[vim.fn.getcharstr()]
          if result and result.val and result.val ~= "" then
            utils.notify(("Copied: `%s`"):format(result.val))
            vim.fn.setreg("+", result.val)
          end
        end,
        find_in_dir = function(state)
          local node = state.tree:get_node()
          local path = node:get_id()
          require("telescope.builtin").find_files {
            cwd = node.type == "directory" and path or vim.fn.fnamemodify(path, ":h"),
          }
        end,
      },
      window = {
        width = 30,
        mappings = {
          ["<space>"] = false, -- disable space until we figure out which-key disabling
          ["[b"] = "prev_source",
          ["]b"] = "next_source",
          F = utils.is_available "telescope.nvim" and "find_in_dir" or nil,
          O = "system_open",
          Y = "copy_selector",
          h = "parent_or_close",
          l = "child_or_open",
          o = "open",
        },
      },
      filesystem = {
        follow_current_file = { enabled = true },
        hijack_netrw_behavior = "open_current",
        use_libuv_file_watcher = true,
      },
      event_handlers = {
        {
          event = "neo_tree_buffer_enter",
          handler = function(_) vim.opt_local.signcolumn = "auto" end,
        },
      },
    }
  end,
}