require('my/plugins')

packer.use {
    'https://github.com/hrsh7th/nvim-cmp',
    requires = {
        {
            'https://github.com/hrsh7th/cmp-nvim-lsp',
            requires = 'https://github.com/neovim/nvim-lspconfig';
        },
        'https://github.com/hrsh7th/cmp-buffer',
        'https://github.com/hrsh7th/cmp-path',
        'https://github.com/hrsh7th/cmp-cmdline',
        {
            'https://github.com/saadparwaiz1/cmp_luasnip',
            requires = 'https://github.com/L3MON4D3/LuaSnip'
        },
    },
    config = function()
        local cmp = require'cmp'
        if not cmp then return end
        local luasnip = require('luasnip')
        if not luasnip then return end

        cmp.setup({
            snippet = {
                expand = function(args)
                    luasnip.lsp_expand(args.body)
                end,
            },
            window = {
                completion = cmp.config.window.bordered(),
                documentation = cmp.config.window.bordered(),
            },
            mapping = cmp.mapping.preset.insert({
                ['<S-PageUp>'] = cmp.mapping.scroll_docs(-4),
                ['<S-PageDown>'] = cmp.mapping.scroll_docs(4),
                ['<C-Space>'] = cmp.mapping.complete(),
                ['<C-e>'] = cmp.mapping.abort(),
                ['<End>'] = cmp.mapping.abort(),
                ['<CR>'] = cmp.mapping.confirm({ select = false }),
                ['<Tab>'] = cmp.mapping(function(fallback)
                    if cmp.visible() then
                        cmp.select_next_item()
                    elseif luasnip.expandable() then
                        luasnip.expand()
                    elseif luasnip.expand_or_jumpable() then
                        luasnip.expand_or_jump()
                    else
                        fallback()
                    end
                end),
                ['<S-Tab>'] = cmp.mapping(function(fallback)
                    if cmp.visible() then
                        cmp.select_prev_item()
                    elseif luasnip.jumpable(-1) then
                        luasnip.kump(-1)
                    else
                        fallback()
                    end
                end)
            }),
            sources = cmp.config.sources({
                { name = 'nvim_lsp' },
                { name = 'luasnip' },
            }, {
                { name = 'buffer' },
            })
        })

        -- Set configuration for specific filetype.
        cmp.setup.filetype('gitcommit', {
            sources = cmp.config.sources({
                { name = 'cmp_git' },
            }, {
                { name = 'buffer' },
            })
        })

        -- Use buffer source for `/` (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' }
            })
        })
    end
}