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path: root/.config/nvim/lua/plugins/cmp.lua
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return {
    {
        "hrsh7th/nvim-cmp",
        event = "InsertEnter",
        dependencies = {
            "hrsh7th/cmp-nvim-lsp",
            "hrsh7th/cmp-nvim-lua",
            "hrsh7th/cmp-buffer",
            "hrsh7th/cmp-path",
            "hrsh7th/cmp-omni",
            "L3MON4D3/LuaSnip",
            "saadparwaiz1/cmp_luasnip",
            "rafamadriz/friendly-snippets",
        },
        config = function()
            local cmp = require("cmp")
            local luasnip = require("luasnip")

            require("luasnip/loaders/from_vscode").lazy_load()

            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 = "",
            }

            ---@diagnostic disable-next-line: missing-fields
            cmp.setup({
                enabled = function()
                    -- disable autocompletion in prompt
                    local buftype = vim.api.nvim_buf_get_option(0, "buftype")
                    if buftype == "prompt" then return false end

                    local context = require 'cmp.config.context'
                    -- disable autocompletion in comments
                    return not context.in_treesitter_capture("comment") and not context.in_syntax_group("Comment")
                end,
                ---@diagnostic disable-next-line: missing-fields
                completion = {
                    completeopt = "menu,menuone,noselect",
                },
                window = {
                    documentation = cmp.config.window.bordered(),
                    completion = cmp.config.window.bordered(),
                },
                snippet = {
                    expand = function(args)
                        luasnip.lsp_expand(args.body)
                    end,
                },
                mapping = cmp.mapping.preset.insert({
                    ["<C-f>"] = cmp.mapping.scroll_docs(-4),
                    ["<C-d>"] = cmp.mapping.scroll_docs(4),
                    ["<C-k>"] = cmp.mapping.select_prev_item(),
                    ["<C-j>"] = cmp.mapping.select_next_item(),
                    ["<CR>"] = cmp.mapping.confirm({
                        behavior = cmp.ConfirmBehavior.Replace,
                        select = false,
                    }),
                    ["<Tab>"] = cmp.mapping(function(fallback)
                        if cmp.visible() then
                            cmp.select_next_item()
                        elseif luasnip.expand_or_jumpable() then
                            luasnip.expand_or_jump()
                        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" }),
                }),
                ---@diagnostic disable-next-line: missing-fields
                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.menu = ({
                            nvim_lsp = "[lsp]",
                            luasnip = "[snippet]",
                            buffer = "[buffer]",
                            path = "[path]",
                        })[entry.source.name]
                        return vim_item
                    end,
                },
                sources = {
                    { name = "nvim_lsp" },
                    { name = "luasnip" },
                    { name = "buffer" },
                    { name = "path" },
                },
            })

            -- insert `(` after select function or method item
            local cmp_autopairs = require('nvim-autopairs.completion.cmp')
            cmp.event:on(
                'confirm_done',
                cmp_autopairs.on_confirm_done()
            )

            ---@diagnostic disable-next-line: missing-fields
            cmp.setup.filetype('gitcommit', {
                sources = cmp.config.sources({
                    { name = 'git' },
                }, {
                    { name = 'buffer' },
                })
            })

            -- use buffer source for `/` .
            ---@diagnostic disable-next-line: missing-fields
            cmp.setup.cmdline('/', {
                mapping = cmp.mapping.preset.cmdline(),
                sources = {
                    { name = 'buffer' }
                }
            })

            -- use cmdline & path source for ':' .
            ---@diagnostic disable-next-line: missing-fields
            cmp.setup.cmdline(':', {
                mapping = cmp.mapping.preset.cmdline(),
                sources = cmp.config.sources({
                    { name = 'path' }
                }, {
                    { name = 'cmdline' }
                })
            })

            -- use omnifunc in vimwiki to complete paths and tags
            ---@diagnostic disable-next-line: missing-fields
            cmp.setup.filetype('vimwiki', {
                sources = cmp.config.sources({
                    { name = 'omni' },
                    option = {
                        disable_omnifuncs = {},
                    },
                })
            })
        end,
    },
}