-- theming
-- Default options
vim.opt.termguicolors = true
vim.cmd.colorscheme 'melange'

--https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md

local lsconfig = require("lspconfig")
-- Nix language server support
lsconfig.nil_ls.setup{}

-- This needs a path to the omnisharp dll provided
lsconfig.omnisharp.setup {}

-- Java language server support
lsconfig.java_language_server.setup{}

-- Typescript language server support
lsconfig.tsserver.setup{}

-- Rust language server support
lsconfig.rust_analyzer.setup{}

-- lsp configuration
vim.api.nvim_create_autocmd('LspAttach', {
  callback = function(args)
  	local opts = { buffer = args.buf }
    vim.keymap.set("n", '<C-Space>', function()
		vim.notify("triggering hover")
		vim.lsp.buf.hover()
	end, opts)
    vim.keymap.set({"n", "v"}, "<Leader>a", vim.lsp.buf.code_action, opts)
    vim.keymap.set("n", "gr", vim.lsp.buf.references, opts)
    vim.keymap.set("n", "gd", vim.lsp.buf.definition, opts)
    vim.keymap.set("n", "<Leader>f", vim.lsp.buf.format, opts)
    -- We use F2 to rename things
    vim.keymap.set("n", "<F2>", vim.lsp.buf.rename, opts)
    --vim.keymap.set("n", "", vim.lsp.buf.implementation, { buffer = args.buf })
  end,
})


-- LSP Diagnostics Options Setup 
local sign = function(opts)
  vim.fn.sign_define(opts.name, {
    texthl = opts.name,
    text = opts.text,
    numhl = ''
  })
end

sign({name = 'DiagnosticSignError', text = '🔥'})
sign({name = 'DiagnosticSignWarn', text = '⚠️'})
sign({name = 'DiagnosticSignHint', text = '➡️'})
sign({name = 'DiagnosticSignInfo', text = '🗒️'})

vim.diagnostic.config({
    virtual_text = false,
    signs = true,
    update_in_insert = true,
    underline = true,
    severity_sort = false,
    float = {
        border = 'rounded',
        source = 'always',
        header = '',
        prefix = '',
    },
})

vim.cmd([[
set signcolumn=yes
autocmd CursorHold * lua vim.diagnostic.open_float(nil, { focusable = false })
]])

vim.cmd([[
let g:coq_settings = { 'auto_start': 'shut-up', 'display.icons.mode': "none" }
]])

require("coq")
--Set completeopt to have a better completion experience
-- :help completeopt
-- menuone: popup even when there's only one match
-- noinsert: Do not insert text until a selection is made
-- noselect: Do not select, force to select one from the menu
-- shortness: avoid showing extra messages when using completion
-- updatetime: set updatetime for CursorHold
vim.opt.completeopt = {'menuone', 'noselect', 'noinsert'}
vim.opt.shortmess = vim.opt.shortmess + { c = true}
vim.api.nvim_set_option('updatetime', 300) 

-- Fixed column for diagnostics to appear
-- Show autodiagnostic popup on cursor hover_range
-- Goto previous / next diagnostic warning / error 
-- Show inlay_hints more frequently 
vim.cmd([[
set signcolumn=yes
autocmd CursorHold * lua vim.diagnostic.open_float(nil, { focusable = false })
]])

-- Treesitter Plugin Setup 
require('nvim-treesitter.configs').setup {
  highlight = {
    enable = true,
    additional_vim_regex_highlighting=false,
  },
  ident = { enable = true }, 
  rainbow = {
    enable = true,
    extended_mode = true,
    max_file_lines = nil,
  }
}

vim.g.loaded_netrw = 1
vim.g.loaded_netrwPlugin = 1

-- set termguicolors to enable highlight groups
vim.opt.termguicolors = true

-- Ensure nvim-web-deicons is loaded
require'nvim-web-devicons'.setup{}

-- setup nvim-tree
require("nvim-tree").setup{}
--({
--  sort_by = "case_sensitive",
--  view = {
--    width = 30,
--  },
--  renderer = {
--    group_empty = true,
--  },
--  filters = {
--    dotfiles = false,
--  },
--})

vim.keymap.set("n", "<C-p>", function()
    require("nvim-tree.api").tree.toggle()
end)

vim.keymap.set("i", "<C-j>", function()
    print("Handling C-J")
    vim.notify("Handling C-J")
end)

--require("nvim-tree.api").tree.toggle()