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path: root/.config/nvim/lua/custom/config/cmp.lua
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-- Load cmp_opts
for _, ft_path in ipairs(vim.api.nvim_get_runtime_file('lua/custom/snippets/*.lua', true)) do
    loadfile(ft_path)()
end

local luasnip = require('luasnip')
local lspkind = require('lspkind')
local cmp = require('cmp')

-- Enable paretheses for function completions
cmp.event:on('confirm_done', require('nvim-autopairs.completion.cmp').on_confirm_done())

-- Helper functions
local function snippet_jump(jump_amount)
    return cmp.mapping(function(fallback)
        if luasnip.locally_jumpable(jump_amount) then
            luasnip.jump(jump_amount)
        else
            fallback()
        end
    end, { 'i', 's' })
end

local function is_enabled()
    local context = require('cmp.config.context')

    local is_in_comment = context.in_treesitter_capture('comment') or context.in_syntax_group('Comment')
    if is_in_comment then
        return false
    end

    return true
end

cmp.setup({
    enabled = is_enabled,
    completion = { completeopt = 'menu,menuone,noinsert' },
    sources = cmp.config.sources({
        { name = 'nvim_lsp' }, -- for lsp
        { name = 'luasnip' }, -- for snippets
        { name = 'lazydev', group_index = 0 }, -- for lazydev.nvim
        { name = 'path' }, -- for filesystem
    }, {}),
    snippet = {
        expand = function(args)
            luasnip.lsp_expand(args.body)
        end,
    },
    window = {
        documentation = cmp.config.window.bordered(),
        completion = {
            border = 'rounded',
            winhighlight = 'Normal:Pmenu,FloatBorder:Pmenu,Search:None',
            col_offset = -3,
            side_padding = 0,
        },
    },
    sorting = {
        comparators = {
            cmp.config.compare.offset,
            cmp.config.compare.exact,
            cmp.config.compare.recently_used,
            require('clangd_extensions.cmp_scores'),
            cmp.config.compare.kind,
            cmp.config.compare.sort_text,
            cmp.config.compare.length,
            cmp.config.compare.order,
        },
    },
    mapping = cmp.mapping.preset.insert({
        ['<Tab>'] = snippet_jump(1),
        ['<S-Tab>'] = snippet_jump(-1),
        ['<C-Space>'] = cmp.mapping.complete(), -- invoke completion
        ['<CR>'] = cmp.mapping.confirm({ select = true, behavior = cmp.ConfirmBehavior.Insert }),
        ['<C-u>'] = cmp.mapping.scroll_docs(-4),
        ['<C-d>'] = cmp.mapping.scroll_docs(4),
        ['<C-m>'] = cmp.mapping.abort(),
        ['<C-n>'] = cmp.mapping.select_next_item({ behavior = cmp.SelectBehavior.Select }),
        ['<C-p>'] = cmp.mapping.select_prev_item({ behavior = cmp.SelectBehavior.Select }),
    }),
    ---@diagnostic disable-next-line: missing-fields
    formatting = {
        fields = { 'kind', 'abbr', 'menu' },
        format = function(entry, vim_item)
            local kind = lspkind.cmp_format({ mode = 'symbol_text', maxwidth = 50 })(entry, vim_item)
            local strings = vim.split(kind.kind, '%s', { trimempty = true })
            kind.kind = ' ' .. (strings[1] or '') .. ' ' -- left (icon)
            kind.menu = '    ' .. (strings[2] or '') .. '' -- right (text)
            return kind
        end,
    },
})

-- -- Customization for Pmenu
-- vim.api.nvim_set_hl(0, 'PmenuSel', { bg = '#282C34', fg = 'NONE' })
-- vim.api.nvim_set_hl(0, 'Pmenu', { fg = '#C5CDD9', bg = '#22252A' })
--
vim.api.nvim_set_hl(0, 'CmpItemAbbrDeprecated', { fg = '#ff8294', bg = 'NONE', strikethrough = true })
-- vim.api.nvim_set_hl(0, 'CmpItemAbbrMatch', { fg = '#82AAFF', bg = 'NONE', bold = true })
-- vim.api.nvim_set_hl(0, 'CmpItemAbbrMatchFuzzy', { fg = '#82AAFF', bg = 'NONE', bold = true })
-- vim.api.nvim_set_hl(0, 'CmpItemMenu', { fg = '#C792EA', bg = 'NONE', italic = true })
--
-- vim.api.nvim_set_hl(0, 'CmpItemKindField', { fg = '#EED8DA', bg = '#B5585F' })
-- vim.api.nvim_set_hl(0, 'CmpItemKindProperty', { fg = '#EED8DA', bg = '#B5585F' })
-- vim.api.nvim_set_hl(0, 'CmpItemKindEvent', { fg = '#EED8DA', bg = '#B5585F' })
--
-- vim.api.nvim_set_hl(0, 'CmpItemKindText', { fg = '#C3E88D', bg = '#9FBD73' })
-- vim.api.nvim_set_hl(0, 'CmpItemKindEnum', { fg = '#C3E88D', bg = '#9FBD73' })
-- vim.api.nvim_set_hl(0, 'CmpItemKindKeyword', { fg = '#C3E88D', bg = '#9FBD73' })
--
-- vim.api.nvim_set_hl(0, 'CmpItemKindConstant', { fg = '#FFE082', bg = '#D4BB6C' })
-- vim.api.nvim_set_hl(0, 'CmpItemKindConstructor', { fg = '#FFE082', bg = '#D4BB6C' })
-- vim.api.nvim_set_hl(0, 'CmpItemKindReference', { fg = '#FFE082', bg = '#D4BB6C' })
--
-- vim.api.nvim_set_hl(0, 'CmpItemKindFunction', { fg = '#EADFF0', bg = '#A377BF' })
-- vim.api.nvim_set_hl(0, 'CmpItemKindStruct', { fg = '#EADFF0', bg = '#A377BF' })
-- vim.api.nvim_set_hl(0, 'CmpItemKindClass', { fg = '#EADFF0', bg = '#A377BF' })
-- vim.api.nvim_set_hl(0, 'CmpItemKindModule', { fg = '#EADFF0', bg = '#A377BF' })
-- vim.api.nvim_set_hl(0, 'CmpItemKindOperator', { fg = '#EADFF0', bg = '#A377BF' })
--
-- vim.api.nvim_set_hl(0, 'CmpItemKindVariable', { fg = '#C5CDD9', bg = '#7E8294' })
-- vim.api.nvim_set_hl(0, 'CmpItemKindFile', { fg = '#C5CDD9', bg = '#7E8294' })
--
-- vim.api.nvim_set_hl(0, 'CmpItemKindUnit', { fg = '#F5EBD9', bg = '#D4A959' })
-- vim.api.nvim_set_hl(0, 'CmpItemKindSnippet', { fg = '#F5EBD9', bg = '#D4A959' })
-- vim.api.nvim_set_hl(0, 'CmpItemKindFolder', { fg = '#F5EBD9', bg = '#D4A959' })
--
-- vim.api.nvim_set_hl(0, 'CmpItemKindMethod', { fg = '#DDE5F5', bg = '#6C8ED4' })
-- vim.api.nvim_set_hl(0, 'CmpItemKindValue', { fg = '#DDE5F5', bg = '#6C8ED4' })
-- vim.api.nvim_set_hl(0, 'CmpItemKindEnumMember', { fg = '#DDE5F5', bg = '#6C8ED4' })
--
-- vim.api.nvim_set_hl(0, 'CmpItemKindInterface', { fg = '#D8EEEB', bg = '#58B5A8' })
-- vim.api.nvim_set_hl(0, 'CmpItemKindColor', { fg = '#D8EEEB', bg = '#58B5A8' })
-- vim.api.nvim_set_hl(0, 'CmpItemKindTypeParameter', { fg = '#D8EEEB', bg = '#58B5A8' })