vim.pack.add({
    'https://github.com/hrsh7th/nvim-cmp',
    'https://github.com/hrsh7th/cmp-nvim-lsp',
    'https://github.com/hrsh7th/cmp-buffer',
    'https://github.com/hrsh7th/cmp-path',
    'https://github.com/hrsh7th/cmp-cmdline',
    'https://github.com/hrsh7th/cmp-nvim-lua',
})

local cmp = require('cmp')

cmp.setup {
    completion = {
        completeopt = 'menu,menuone,noinsert',
    },
    experimental = {
        ghost_text = true,
    },
    mapping = {
        ['<C-n>'] = cmp.mapping.select_next_item(),
        ['<C-p>'] = cmp.mapping.select_prev_item(),
        ['<C-j>'] = cmp.mapping.scroll_docs(-4),
        ['<C-k>'] = cmp.mapping.scroll_docs(4),
        ['<C-space>'] = cmp.mapping.complete(),
        ['<C-y>'] = cmp.mapping.confirm({
            behavior = cmp.ConfirmBehavior.Insert,
            select = true,
        }),
    },
    formatting = {
        format = function(entry, vim_item)
            vim_item.menu = ({
                buffer = '[Buf]',
                luasnip = '[Snips]',
                nvim_lsp = '[LSP]',
                nvim_lua = '[Lua]',
            })[entry.source.name]
            return vim_item
        end,
        field = { 'abbr', 'kind', 'menu' }
    },
    sources = cmp.config.sources({
        { name = 'nvim_lsp' },
        { name = 'luasnip' },
        { name = 'path' },
        { name = 'render-markdown' },
    }, {
        { name = 'buffer' },
    })
}

cmp.setup.cmdline(':', {
    mapping = cmp.mapping.preset.cmdline(),
    sources = cmp.config.sources({
        { name = 'path' },
    }, {
        { name = 'cmdline' },
    })
})

cmp.setup.cmdline({ '/', '?' }, {
    mapping = cmp.mapping.preset.cmdline(),
    sources = {
        { name = 'buffer' }
    }
})