local opt = vim.opt
local g = vim.g

vim.cmd [[
  colorscheme onehalflight

  if has("autocmd")
    au BufReadPost * if line("'\"") > 1 && line("'\"") <= line("$") | exe "normal! g'\"" | endif
  endif

  autocmd Filetype json
    \ let g:indentLine_setConceal = 0 |
    \ let g:vim_json_syntax_conceal = 0
]]

g.mapleader = ' '
g.indentLine_char = '⎸'
g.indentLine_color_gui = '#c7c7c7'

opt.undofile = true
opt.undodir = "/home/sijmen/.cache/nvim/undo"
opt.backupdir = "/home/sijmen/.cache/nvim/backup"

opt.shada = "!,'100,<50,s10,h"

opt.smartindent = true
opt.autoindent = true
opt.tabstop = 2
opt.shiftwidth = 2
opt.expandtab = true

opt.mouse = "a"

opt.termguicolors = true
opt.cursorline = true
opt.relativenumber = true

opt.viminfo = ""
opt.viminfofile = "NONE"

opt.smartcase = true
opt.ttimeoutlen = 5
opt.compatible = false
opt.autoread = true
opt.incsearch = true
opt.hidden = true
opt.shortmess = "atI"


require("nvim-tree").setup()

require("nvim-treesitter.configs").setup {
  auto_install = true,
  highlight = {
    enable = true,
  },
}


local opts = { noremap=true, silent=true }
vim.keymap.set('n', '<space>e', vim.diagnostic.open_float, opts)
vim.keymap.set('n', '[d', vim.diagnostic.goto_prev, opts)
vim.keymap.set('n', ']d', vim.diagnostic.goto_next, opts)
vim.keymap.set('n', '<space>q', vim.diagnostic.setloclist, opts)

local on_attach = function(client, bufnr)
  vim.api.nvim_buf_set_option(bufnr, 'omnifunc', 'v:lua.vim.lsp.omnifunc')

  local bufopts = { noremap=true, silent=true, buffer=bufnr }
  vim.keymap.set('n', 'gD', vim.lsp.buf.declaration, bufopts)
  vim.keymap.set('n', 'gd', vim.lsp.buf.definition, bufopts)
  vim.keymap.set('n', 'K', vim.lsp.buf.hover, bufopts)
  vim.keymap.set('n', 'gi', vim.lsp.buf.implementation, bufopts)
  vim.keymap.set('n', '<C-k>', vim.lsp.buf.signature_help, bufopts)
  vim.keymap.set('n', '<space>wa', vim.lsp.buf.add_workspace_folder, bufopts)
  vim.keymap.set('n', '<space>wr', vim.lsp.buf.remove_workspace_folder, bufopts)

  vim.keymap.set('n', '<space>wl', function()
    print(vim.inspect(vim.lsp.buf.list_workspace_folders()))
  end, bufopts)

  vim.keymap.set('n', '<space>D', vim.lsp.buf.type_definition, bufopts)
  vim.keymap.set('n', '<space>rn', vim.lsp.buf.rename, bufopts)
  vim.keymap.set('n', '<space>ca', vim.lsp.buf.code_action, bufopts)
  vim.keymap.set('n', 'gr', vim.lsp.buf.references, bufopts)
  vim.keymap.set('n', '<space>f', vim.lsp.buf.formatting, bufopts)
end

local lspconfig = require("lspconfig")
lspconfig.rnix.setup { on_attach = on_attach }
lspconfig.pyright.setup { on_attach = on_attach }
lspconfig.rust_analyzer.setup { on_attach = on_attach }

vim.api.nvim_set_keymap("n", "<C-b>", ":NvimTreeToggle<CR>", { noremap = true, silent = true })