-- CMP
local has_words_before = function()
  local line, col = unpack(vim.api.nvim_win_get_cursor(0))
  return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match("%s") == nil
end

local luasnip = require("luasnip")
local cmp = require("cmp")
require("luasnip/loaders/from_vscode").lazy_load()
vim.o.completeopt = 'menuone,noselect'

cmp.setup {
    snippet = {
        expand = function(args)
            require('luasnip').lsp_expand(args.body)
        end,
    },
    mapping = {
        ['<CR>'] = cmp.mapping.confirm({ select = true }),
        ['<C-n>'] = cmp.mapping.select_next_item(),
        ['<C-p>'] = cmp.mapping.select_prev_item(),
        ['<C-f>'] = cmp.mapping.scroll_docs(4),
        ['<C-d>'] = cmp.mapping.scroll_docs(-4),
        ['<C-e>'] = cmp.mapping.close(),
        ["<Tab>"] = cmp.mapping(function(fallback)
            if cmp.visible() then
                cmp.select_next_item()
            elseif luasnip.expand_or_jumpable() then
                luasnip.expand_or_jump()
            elseif has_words_before() then
                cmp.complete()
            else
                fallback()
            end
        end, { "i", "s" }),

        ["<S-Tab>"] = cmp.mapping(function(fallback)
            if cmp.visible() then
                cmp.select_prev_item()
            elseif luasnip.jumpable(-1) then
                luasnip.jump(-1)
            else
                fallback()
            end
        end, { "i", "s" }),
    },
    sources = {
        { name = 'nvim_lsp' },
        { name = 'luasnip' },
    },
}
vim.cmd('autocmd FileType markdown lua require("cmp").setup.buffer { enabled = false }')

-- LSPCONFIG

local lsp_installer = require("nvim-lsp-installer")

-- Register a handler that will be called for each installed server when it's ready (i.e. when installation is finished
-- or if the server is already installed).
lsp_installer.on_server_ready(function(server)
    local opts = {}

    -- (optional) Customize the options passed to the server
    -- if server.name == "tsserver" then
    --     opts.root_dir = function() ... end
    -- end

    -- This setup() function will take the provided server configuration and decorate it with the necessary properties
    -- before passing it onwards to lspconfig.
    -- Refer to https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md
    server:setup(opts)
end)

-- Misc

require('nvim-autopairs').setup{}

require'lsp_signature'.setup {
    floating_window = false
}

require'nvim-treesitter.configs'.setup {
    highlight = {
        enable = true,
    },
}

require('kommentary.config').configure_language("default", {
    prefer_single_line_comments = true,
})

require("indent_blankline").setup {
    char = "¦",
    show_trailing_blankline_indent = false,
    buftype_exclude = {"startify", "help", "terminal"},
    filetype_exclude = {"startify", "help", "terminal"},
}