local M = {}

function M.support_float()
    return vim.fn.exists('*nvim_open_win') == 1
end

function M.opened()
    return vim.fn.win_id2tabwin(M.__winid)[1] == vim.fn.tabpagenr()
end

function M.open_float(sl)
    if M.__bufnr == nil or vim.fn.bufexists(M.__bufnr) == 0 then
        M.__bufnr = vim.api.nvim_create_buf(false, true)
    end
    if M.__winid == nil or not M.opened() then
        M.__winid = vim.api.nvim_open_win(M.__bufnr, false, {
            relative = 'editor',
            width = vim.o.columns,
            height = 1,
            -- highlight = 'SpaceVim_statusline_a_bold',
            row = vim.o.lines - 2,
            col = 0
        })
    end
    vim.fn.setwinvar(M.__winid, '&winhighlight', 'Normal:SpaceVim_statusline_a_bold')
    vim.fn.setbufvar(M.__bufnr, '&relativenumber', 0)
    vim.fn.setbufvar(M.__bufnr, '&number', 0)
    vim.fn.setbufvar(M.__bufnr, '&bufhidden', 'wipe')
    vim.fn.setbufvar(M.__bufnr, '&cursorline', 0)
    vim.fn.setbufvar(M.__bufnr, '&modifiable', 1)
    vim.fn.setwinvar(vim.fn.win_id2win(M.__winid), '&cursorline', 0)
    vim.api.nvim_buf_set_virtual_text( M.__bufnr, -1, 0, sl, {})
    vim.fn.setbufvar(M.__bufnr, '&modifiable', 0)
    return M.__winid
end

function M.close_float()
    if M.__winid ~= nil then
        vim.api.nvim_win_close(M.__winid, true)
    end
end

return M