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path: root/lua/config_cmp.lua
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vim.opt.completeopt = "menu,menuone,noselect"
local constants = require("constants")

-- Setup lspconfig.
require'lspconfig'.clangd.setup{}
require'lspconfig'.pylsp.setup{}

local cmp = require'cmp'

local kind_icons = {
  Text = "",
  Method = "",
  Function = "󰊕",
  Constructor = "",
  Field = "",
  Variable = "󰫧",
  Class = "",
  Interface = "",
  Module = "",
  Property = "",
  Unit = "",
  Value = "",
  Enum = "",
  Keyword = "",
  Snippet = "",
  Color = "",
  File = "",
  Reference = "",
  Folder = "",
  EnumMember = "",
  Constant = "",
  Struct = "",
  Event = "",
  Operator = "",
  TypeParameter = "",
}

-- The key mapping for the cmd.
local cmd_mapping = {
	['<Tab>'] = {
		c = function()
			if cmp.visible() then
				cmp.select_next_item()
			else
				feedkeys.call(keymap.t('<C-z>'), 'n')
			end
		end
	},

	['<S-Tab>'] = {
		c = function()
			if cmp.visible() then
				cmp.select_prev_item()
			else
				feedkeys.call(keymap.t('<C-z>'), 'n')
			end
		end
	},

	[constants.next_key] = {
		c = function(fallback)
			if cmp.visible() then
				cmp.select_next_item()
			else
				fallback()
			end
		end
	},

	[constants.previous_key] = {
		c = function(fallback)
			if cmp.visible() then
			  cmp.select_prev_item()
			else
			  fallback()
			end
		end
	},

	[constants.close_key] = {
		c = cmp.mapping.close(),
	}
}

-- Setup time!!!!
cmp.setup({
  snippet = {
    -- REQUIRED - you must specify a snippet engine
    expand = function(args)
      require('luasnip').lsp_expand(args.body) -- For `luasnip` usersc;
    end,
  },
  window = {
    completion = cmp.config.window.bordered(),
    documentation = cmp.config.window.bordered(),
  },
  mapping = {
	[constants.next_key] = cmp.mapping.select_next_item(),
    [constants.previous_key] = cmp.mapping.select_prev_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.
    [constants.close_key] = 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 },
  },
  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 = ({
        nvim_lsp = "[LSP]",
        luasnip = "[Snippet]",
        buffer = "[Buffer]",
        path = "[Path]",
		nvim_lua = "[nvim_lua]",
      })[entry.source.name]
      return vim_item
    end,
  },
  sources = {
    { name = 'nvim_lsp' },
	{ name = 'nvim_lua' },
    { name = 'luasnip' }, -- For luasnip users.
	{ name = 'path' },
	{ 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 `/` (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline('/', {
  mapping = cmd_mapping,
  sources = {
    { name = 'buffer' }
  }
})

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

-- Setup lspconfig.
local capabilities = require('cmp_nvim_lsp').default_capabilities(vim.lsp.protocol.make_client_capabilities())
local lspconfig = require('lspconfig')

-- Attaching navic.
local navic = require("nvim-navic")

local on_attach = function(client, bufnr)
    if client.server_capabilities.documentSymbolProvider then
		navic.attach(client, bufnr)
    end
end

-- C++/C.
lspconfig['clangd'].setup {
	capabilities = capabilities,
	on_attach = on_attach
}

-- Python
lspconfig['pylsp'].setup {
	capabilities = capabilities,
	on_attach = on_attach
}