local lsp = require('lsp-zero')

lsp.preset('recommended')
lsp.configure('sumneko_lua', {
    settings = {
        Lua = {
            diagnostics = {
                globals = { 'vim' }
            }
        }
    }
})

lsp.on_attach = function (_, bufnr)
    local options = { buffer = bufnr, remap = false }
    vim.keymap.set ("n", "K", vim.lsp.buf.hover, options) -- buffer=0 -> only in current buffer
    vim.keymap.set ("n", "gd", vim.lsp.buf.definition, options) -- goto definition
    vim.keymap.set ("n", "gT", vim.lsp.buf.type_definition, options) -- goto typedefinition
    vim.keymap.set ("n", "gi", vim.lsp.buf.implementation, options) -- goto implementation
    vim.keymap.set ("n", "dj", vim.diagnostic.goto_next, options) -- goto dignostic next
    vim.keymap.set ("n", "dk", vim.diagnostic.goto_prev, options) -- goto diognostic prev
    vim.keymap.set ("n", "dl", "<cmd>Telescope diagnostic", options) -- goto list failure
    vim.keymap.set ("n", "<leader>r", vim.lsp.buf.rename, options)
end

local cmp = require('cmp')
local cmp_select = {behavior = cmp.SelectBehavior.Select}
local cmp_mappings = lsp.defaults.cmp_mappings({
    ['<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(),
})

lsp.setup_nvim_cmp({
    mapping = cmp_mappings,
})

cmp.setup({
    experimental = { ghost_text = true },
});

lsp.setup()

vim.diagnostic.config( { virtual_text = true } )