From 1464c78f7f4db3b182a5f6dca28570abf94c5e8b Mon Sep 17 00:00:00 2001
From: Gustaf Rydholm <gustaf.rydholm@gmail.com>
Date: Mon, 10 Jan 2022 21:59:33 +0100
Subject: Add cmp config

---
 lua/plugins/configs/cmp.lua | 128 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 128 insertions(+)
 create mode 100644 lua/plugins/configs/cmp.lua

diff --git a/lua/plugins/configs/cmp.lua b/lua/plugins/configs/cmp.lua
new file mode 100644
index 0000000..0082203
--- /dev/null
+++ b/lua/plugins/configs/cmp.lua
@@ -0,0 +1,128 @@
+-- Configuration for completion plugin.
+
+local cmp_status_ok, cmp = pcall(require, "cmp")
+if not cmp_status_ok then
+	return
+end
+
+local snip_status_ok, luasnip = pcall(require, "luasnip")
+if not snip_status_ok then
+	return
+end
+
+require("luasnip/loaders/from_vscode").lazy_load()
+
+local check_backspace = function()
+	local col = vim.fn.col(".") - 1
+	return col == 0 or vim.fn.getline("."):sub(col, col):match("%s")
+end
+
+local kind_icons = {
+	Text = "",
+	Method = "m",
+	Function = "",
+	Constructor = "",
+	Field = "",
+	Variable = "",
+	Class = "",
+	Interface = "",
+	Module = "",
+	Property = "",
+	Unit = "",
+	Value = "",
+	Enum = "",
+	Keyword = "",
+	Snippet = "",
+	Color = "",
+	File = "",
+	Reference = "",
+	Folder = "",
+	EnumMember = "",
+	Constant = "",
+	Struct = "",
+	Event = "",
+	Operator = "",
+	TypeParameter = "",
+}
+
+cmp.setup({
+	snippet = {
+		expand = function(args)
+			luasnip.lsp_expand(args.body) -- For `luasnip` users.
+		end,
+	},
+	mapping = {
+		["<C-k>"] = cmp.mapping.select_prev_item(),
+		["<C-j>"] = cmp.mapping.select_next_item(),
+		["<C-b>"] = cmp.mapping(cmp.mapping.scroll_docs(-1), { "i", "c" }),
+		["<C-f>"] = cmp.mapping(cmp.mapping.scroll_docs(1), { "i", "c" }),
+		["<C-Space>"] = cmp.mapping(cmp.mapping.complete(), { "i", "c" }),
+		["<C-y>"] = cmp.config.disable, -- Specify `cmp.config.disable` if you want to remove the default `<C-y>` mapping.
+		["<C-e>"] = cmp.mapping({
+			i = cmp.mapping.abort(),
+			c = cmp.mapping.close(),
+		}),
+		-- Accept currently selected item. If none selected, `select` first item.
+		-- Set `select` to `false` to only confirm explicitly selected items.
+		["<CR>"] = cmp.mapping.confirm({ select = true }),
+		["<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()
+			elseif check_backspace() then
+				fallback()
+			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",
+		}),
+	},
+	formatting = {
+		fields = { "kind", "abbr", "menu" },
+		format = function(entry, vim_item)
+			-- Kind icons
+			vim_item.kind = string.format("%s", kind_icons[vim_item.kind])
+			-- vim_item.kind = string.format('%s %s', kind_icons[vim_item.kind], vim_item.kind) -- This concatonates the icons with the name of the item kind
+			vim_item.menu = ({
+				luasnip = "[Snippet]",
+				buffer = "[Buffer]",
+				path = "[Path]",
+			})[entry.source.name]
+			return vim_item
+		end,
+	},
+	-- TODO: check out more sources
+	sources = {
+		{ name = "luasnip" },
+		{ name = "buffer" },
+		{ name = "path" },
+	},
+	confirm_opts = {
+		behavior = cmp.ConfirmBehavior.Replace,
+		select = false,
+	},
+	documentation = {
+		border = { "╭", "─", "╮", "│", "╯", "─", "╰", "│" },
+	},
+	experimental = {
+		ghost_text = false,
+		native_menu = false,
+	},
+})
-- 
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