local cmd = vim.cmd  -- to execute Vim commands e.g. cmd('pwd')
local fn = vim.fn    -- to call Vim functions e.g. fn.bufnr()
local g = vim.g      -- a table to access global variables
local opt = vim.opt  -- to set options

local fn = vim.fn

-- Auto install packer.nvim if not exists
local fn = vim.fn
local install_path = fn.stdpath('data')..'/site/pack/packer/start/packer.nvim'
if fn.empty(fn.glob(install_path)) > 0 then
  fn.system({'git', 'clone', '--depth', '1', 'https://github.com/wbthomason/packer.nvim', install_path})
  vim.cmd 'packadd packer.nvim'
end
vim.cmd [[packadd packer.nvim]]
local utils = require('utils')
-- Install plugins
require('plugins')
require('keymappings')
-------------------- OPTIONS -------------------------------
cmd 'colorscheme gruvbox-material'            -- Put your favorite colorscheme here
cmd 'syntax enable'
cmd 'filetype plugin indent on'
cmd 'language en_US.utf-8'
utils.opt('o', 'hlsearch', true)
utils.opt('o', 'guifont', 'Hack NF:h9')
utils.opt('o', 'swapfile', false)
utils.opt('o', 'backup', false)
utils.opt('o', 'spelllang', 'en,de')
local indent = 2
utils.opt('b', 'expandtab', true)
utils.opt('b', 'shiftwidth', indent)
utils.opt('b', 'smartindent', true)
utils.opt('b', 'tabstop', indent)
utils.opt('o', 'hidden', true)
utils.opt('o', 'ignorecase', true)
utils.opt('o', 'scrolloff', 4 )
utils.opt('o', 'shiftround', true)
utils.opt('o', 'relativenumber', false)
utils.opt('o', 'smartcase', true)
utils.opt('o', 'splitbelow', true)
utils.opt('o', 'splitright', true)
utils.opt('o', 'wildmode', 'longest:full,full')
utils.opt('w', 'number', true)
utils.opt('o', 'clipboard', 'unnamed,unnamedplus')
utils.opt('o', 'mouse', 'a')
utils.opt('o', 'wrap', false)
utils.opt('o', 'termguicolors', true)
utils.opt('o', 'splitbelow', true)
utils.opt('o', 'splitright', true)
utils.opt('o', 'list', true)
utils.opt('o', 'updatetime', 300)
utils.opt('o', 'wrap', true)
utils.opt('o', 'showmatch', true)

-------------------- AUTOCOMMANDS --------------------------
require("autocommands")
-------------------- TREE-SITTER ---------------------------
require('nvim-treesitter.configs').setup({
  ensure_installed = 'maintained',
  highlight = {
    enable = true
  }
})

-------------------- TELESCOPE -----------------------------
require('my_telescope')
-------------------- LSP -----------------------------------
require('mylsp')

-------------------- GITSIGNS ------------------------------
require('gitsigns').setup()
-------------------- LIGHTBULB -----------------------------
require('nvim-lightbulb').update_lightbulb()
vim.cmd [[autocmd CursorHold,CursorHoldI * lua require'nvim-lightbulb'.update_lightbulb()]]
-------------------- CMP -----------------------------------
require('cmp_plug')
-------------------- NVIM-TREE -----------------------------
require('nvim-tree').setup({
  auto_close = true,
  update_cwd  = true,
  -- update_to_buf_dir   = {
  --   -- enable the feature
  --   enable = true,
  --   -- allow to open the tree if it was previously closed
  --   auto_open = false,
  -- },
   diagnostics = {
    enable = true,
    icons = {
      hint = "",
      info = "",
      warning = "",
      error = "",
    }
  },
})
utils.map('n', '<leader>tt', '<cmd>NvimTreeToggle<CR>')
g.nvim_tree_highlight_opened_files = 1
g.nvim_tree_respect_buf_cwd = 1
-------------------- COMMENTED -----------------------------
require('Comment').setup({
  toggler = {
    ---line-comment toggle
    line = '<leader>cc',
  },
  opleader = {
    ---line-comment opfunc mapping
    line = '<leader>c',
  },
})
-------------------- CMAKE ---------------------------------
require('telescope').load_extension('cmake')
local Path = require('plenary.path')
require('cmake').setup({
  parameters_file = 'neovim.json', -- JSON file to store information about selected target, run arguments and build type.
  build_dir = '{cwd}/build_nvim', -- Build directory. The expressions `{cwd}`, `{os}` and `{build_type}` will be expanded with the corresponding text values.
})
utils.map('n', '<F5>', ':CMake build<CR>:copen<CR>')

-- msbuild errorformat
opt.errorformat:append("\\ %#%f(%l\\\\\\,%c):\\ %m")
-- cl.exe errorformat
-- o.errorformat:append('\ %#%f(%l) : %#%t%[A-z]%# %m')

-------------------- NEOCLIP -------------------------------
require('neoclip').setup({
  default_register = '+',
})
require('telescope').load_extension('neoclip')
-------------------- LUALINE -------------------------------
require('lualine').setup {
  options = {theme = 'gruvbox'},
  sections = {lualine_c = {'getcwd', 'filename', 'nvim_treesitter#statusline'},
  }
}
-------------------- PROJECT -------------------------------
require("project_nvim").setup {
  silent_chdir = true,
}
require('telescope').load_extension('projects')
utils.map('n', '<space>p', '<cmd>Telescope projects<cr>')
-------------------- TS-RAINBOW ----------------------------
require'nvim-treesitter.configs'.setup {
  rainbow = {
    enable = true,
    extended_mode = true, -- Also highlight non-bracket delimiters like html tags, boolean or table: lang -> boolean
    max_file_lines = nil, -- Do not enable for files with more than n lines, int
    -- colors = {}, -- table of hex strings
    -- termcolors = {} -- table of colour name strings
  }
}
-------------------- LUASNIP -------------------------------
require("luasnip.loaders.from_vscode").load()
-------------------- AUTOPAIRS -----------------------------
require('nvim-autopairs').setup{}
require("nvim-autopairs.completion.cmp").setup({
  map_cr = true, --  map <CR> on insert mode
  map_complete = true, -- it will auto insert `(` (map_char) after select function or method item
  auto_select = true, -- automatically select the first item
  insert = false, -- use insert confirm behavior instead of replace
  map_char = { -- modifies the function or method delimiter by filetypes
    all = '(',
    tex = '{'
  }
})
-------------------- FZF NATIVE ----------------------------
require('telescope').load_extension('fzf')