local lsp = require("lsp-zero")

lsp.preset("recommended")

require('mason').setup({})
require('mason-lspconfig').setup({
	ensure_installed = {
		'eslint',
		'rust_analyzer',
	},
	handlers = {
		function(server_name)
			require('lspconfig')[server_name].setup({})
		end,
	},
})

local cmp = require('cmp')
local cmp_select = { behavior = cmp.SelectBehavior.Select }
cmp.setup({
    sources = {
        {name = 'nvim_lsp'},
        {name = 'cmp-buffer'},
        {name = 'cmp-path'},
        {name = 'copilot'},
    },
    mapping = cmp.mapping.preset.insert({
    	['<C-p>'] = cmp.mapping.select_prev_item(cmp_select),
	    ['<C-n>'] = cmp.mapping.select_next_item(cmp_select),
    	['<C-y>'] = cmp.mapping.confirm({select = true}),
    	['<C-Space>'] = cmp.mapping.complete(),
        ['<CR>'] = cmp.mapping.confirm({
            behavior = cmp.ConfirmBehavior.Replace,
            select = false,
        })
    })
})

lsp.set_preferences({
	sign_icons = {}
})

lsp.on_attach(function(client, bufnr)
	local opts = { buffer=bufnr, remap=false }

	vim.keymap.set("n", "gd", function() vim.lsp.buf.definition() end, opts)
	vim.keymap.set("n", "K", function() vim.lsp.buf.hover() end, opts)
	vim.keymap.set("n", "<leader>vws", function() vim.lsp.workspace_symbol() end, opts)
	vim.keymap.set("n", "<leader>vd", function() vim.diagnostic.open_float() end, opts)
	vim.keymap.set("n", "[d", function() vim.diagnostic.goto_next() end, opts)
	vim.keymap.set("n", "]d", function() vim.diagnostic.goto_prev() end, opts)
	vim.keymap.set("n", "<leader>vca", function() vim.lsp.buf.code_action() end, opts)
	vim.keymap.set("n", "<leader>vrr", function() vim.lsp.buf.references() end, opts)
	vim.keymap.set("n", "<leader>vrn", function() vim.lsp.buf.rename() end, opts)
	vim.keymap.set("i", "<C-n>", function() vim.lsp.buf.signature_help() end, opts)
end)

lsp.setup()

-- require("lspconfig").gopls.setup({
--    -- your gopls setup
-- })