local augroup = vim.api.nvim_create_augroup
local gib_group = augroup('Gib', {})
local autocmd = vim.api.nvim_create_autocmd
local createcmd = vim.api.nvim_create_user_command
local yank_group = augroup('HighlightYank', {})

function R(name)
    require("plenary.reload").reload_module(name)
end

autocmd('TextYankPost', {
    group = yank_group,
    pattern = '*',
    callback = function()
        vim.highlight.on_yank({
            higroup = 'IncSearch',
            timeout = 40,
        })
    end,
})

autocmd({"BufWritePre"}, {
    group = gib_group,
    pattern = "*",
    command = [[%s/\s\+$//e]],
})

autocmd({'BufWritePost'}, {
  pattern = 'init.lua',
  command = 'source <afile>',
})

autocmd('LspAttach', {
    group = gib_group,
    callback = function(e)
        local opts = { buffer = e.buf }
        vim.keymap.set('n', '<leader>kf', vim.lsp.buf.format)
        vim.keymap.set("n", "gd", function() vim.lsp.buf.definition() end, opts)
        vim.keymap.set("n", "<leader>kw", function() vim.lsp.buf.workspace_symbol() end, opts)
        vim.keymap.set("n", "<leader>kd", function() vim.diagnostic.open_float() end, opts)
        vim.keymap.set("n", "<leader>vca", function() vim.lsp.buf.code_action() end, opts)
        vim.keymap.set("n", "<leader>re", function() vim.lsp.buf.references() end, opts)
        vim.keymap.set("n", "<leader>rn", function() vim.lsp.buf.rename() end, opts)
        vim.keymap.set("i", "<C-h>", function() vim.lsp.buf.signature_help() end, opts)
    end
})

createcmd("Format", function(args)
  local range
  if args.count ~= -1 then
    local start_line = vim.fn.line("'<")
    local end_line = vim.fn.line("'>")
   range = { start = { start_line, 0 }, ["end"] = { end_line, 0 } }
  end
  require("conform").format({
    async = true,
    lsp_fallback = true, -- if no external formatter, use LSP
    range = range,
  })
end, { range = true, desc = "Format current buffer or range" })
vim.keymap.set({ "n", "v" }, "<leader>fk", ":Format<CR>", { silent = true, desc = "Format" })