dotfiles/nvim/lua/statuscolumn.lua

local statuscolumn = {}

statuscolumn.setHL = function ()
    local colors = {
        '#888cd8',
        '#8081cd',
        '#7877c2',
        '#706cb7',
        '#6862ad',
        '#6057a2',
        '#584d97',
        '#50438d',
        '#493a82',
        '#413078',
    }
    for i, color in ipairs(colors) do
        vim.api.nvim_set_hl(0, 'Gradient_' .. i, { fg = color })
    end
end

statuscolumn.border = function()
    -- if vim.v.relnum < 9 then
    --     return '%#Gradient_' .. (vim.v.relnum + 1) .. '#│'
    -- else
    --     return '%#Gradient_10#│'
    -- end
    return '│'
end

statuscolumn.folds = function()
    local foldlevel = vim.fn.foldlevel(vim.v.lnum)
    local foldlevel_before = vim.fn.foldlevel((vim.v.lnum - 1) >= 1 and vim.v.lnum - 1 or 1)
    local foldlevel_after = vim.fn.foldlevel((vim.v.lnum + 1) <= vim.fn.line('$') and (vim.v.lnum + 1) or vim.fn.line('$'))

    local foldclosed = vim.fn.foldclosed(vim.v.lnum)

    if foldlevel == 0 then
        return ' '
    end

    if foldclosed ~= -1 and foldclosed == vim.v.lnum then
        return '▶'
    end

    if foldlevel > foldlevel_before then
        return '▽'
    end

    if foldlevel > foldlevel_after then
        return '╰'
    end

    return '╎'
end

statuscolumn.numbers = function()
    return string.format('%-3s %2s ', vim.v.lnum, vim.v.relnum)
end

statuscolumn.statusColumn = function()
    local column_text = ''

    statuscolumn.setHL()

    column_text = table.concat({
        '%s',
        statuscolumn.numbers(),
        statuscolumn.border(),
        -- statuscolumn.folds(), ' ',
    })

    return column_text
end

return statuscolumn