-- Setup nvim-cmp
local cmp = require("cmp")

cmp.setup({
    snippet = {
        -- REQUIRED - you must specify a snippet engine
        expand = function(args)
            require('luasnip').lsp_expand(args.body)
        end,
        vim.lsp.buf.format,
    },
    window = {

        -- completion = cmp.config.window.bordered(),
        -- documentation = cmp.config.window.bordered(),
    },
    mapping = cmp.mapping.preset.insert({
        ["<C-b>"] = cmp.mapping.scroll_docs(-4),
        ["<C-f>"] = cmp.mapping.scroll_docs(4),

        ["<C-Space>"] = cmp.mapping.complete(),
        ["<C-e>"] = cmp.mapping.abort(),
        ["<CR>"] = cmp.mapping.confirm({ select = true }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
        ["<Tab>"] = cmp.mapping(function(fallback)
            if cmp.visible() then
                cmp.select_next_item()
            else
                fallback()
            end
        end),
        ["<S-Tab>"] = cmp.mapping(function(fallback)
            if cmp.visible() then
                cmp.select_prev_item()
            else
                fallback()
            end
        end),
    }),
    sources = cmp.config.sources({
        { name = "nvim_lsp" },
        { name = "luasnip" },
        { name = "treesitter" },
    }, {
        { name = "buffer" },
    }),
})

-- Set configuration for specific filetype.
cmp.setup.filetype("gitcommit", {
    sources = cmp.config.sources({
        { name = "cmp_git" }, -- You can specify the `cmp_git` source if you were installed it.
    }, {
        { name = "buffer" },
    }),
})

-- Use buffer source for `/` and `?` (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline({ "/", "?" }, {
    mapping = cmp.mapping.preset.cmdline(),
    sources = {
        { name = "buffer" },
    },
})

-- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline(":", {
    mapping = cmp.mapping.preset.cmdline(),
    sources = cmp.config.sources({
        { name = "path" },
    }, {
        { name = "cmdline" },
    }, {
        { name = "stylua" },
    }),
})