if (vim.g.enablecompletion == 1) then
    local snippy = require("snippy")
    local cmp = require"cmp"

    local has_words_before = function()
        unpack = unpack or table.unpack
        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

    cmp.setup({
        snippet = {
            expand = function(args)
                require "snippy".expand_snippet(args.body)
            end
        },
        window = {
            completion = cmp.config.window.bordered(),
            documentation = cmp.config.window.bordered(),
        },
        mapping = cmp.mapping.preset.insert({
            ["<Tab>"] = cmp.mapping(function(fallback)
                if cmp.visible() then
                    cmp.select_next_item()
                elseif snippy.can_expand_or_advance() then
                    snippy.expand_or_advance()
                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 snippy.can_jump(-1) then
                    snippy.previous()
                else
                    fallback()
                end
            end, { "i", "s" }),

            ["<Leader>"] = cmp.mapping.abort(),
            ["<CR>"] = cmp.mapping.confirm({ select = true }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
        }),
        sources = cmp.config.sources({
            { name = "buffer" },
            { name = "treesitter" },
            { name = "omni" },
            { name = "tags", option = { current_buffer_only = true } },
            { name = "snippy" },
        })
    })
end