-- {{ ansible_managed }}

-- set the colorscheme whenever the background setting changes
vim.api.nvim_create_autocmd({'OptionSet'}, {
    pattern = {'background'},
    callback = function()
        if vim.o.background == 'dark' then
            vim.cmd('colorscheme xcodedark')
        else
            vim.cmd('colorscheme catppuccin-latte')
        end

        -- force a full redraw:
        vim.cmd('mode')
    end
})

{% if ansible_facts['os_family'] == 'Archlinux' %}
--[[
Use `busctl --user tree` to show a tree of available services.
Use the `Introspect` option to inspect available options:

dbus-send \
--session \
--print-reply ]
--reply-timeout=2000 \
--type=method_call \
--dest=org.freedesktop.portal.Desktop \
/org/freedesktop/portal/desktop \
org.freedesktop.DBus.Introspectable.Introspect

--]]
local oneshot = {
  'dbus-send',
  '--session',
  '--print-reply',
  '--reply-timeout=2000',
  '--type=method_call',
  '--dest=org.freedesktop.portal.Desktop',
  '/org/freedesktop/portal/desktop',
  'org.freedesktop.portal.Settings.ReadOne',
  'string:org.freedesktop.appearance',
  'string:color-scheme'
}

local set_background = vim.schedule_wrap(
  function(object)
    local default_background = 'light'

    if object.code ~= 0 then
      print(string.format('An error occured: \n %s', object.stderr))
      vim.api.nvim_command(string.format('set background=%s', default_background))
    end

    local colorscheme_output = tonumber(string.match(object.stdout, 'uint32 (%d)'))

    if colorscheme_output == 1 then
      vim.api.nvim_command('set background=dark')
    elseif colorscheme_output == 2 then
      vim.api.nvim_command('set background=light')
    end
  end
)

vim.schedule(
  function() vim.system(oneshot, { text = true }, set_background) end
)

-- Note that the last argument is a match rule,
-- see https://dbus.freedesktop.org/doc/dbus-specification.html#message-bus-routing-match-rules.
local monitor_command = {
  'dbus-monitor',
  '--session',
  'path=/org/freedesktop/portal/desktop,' ..
  'interface=org.freedesktop.portal.Settings,' ..
  'member=SettingChanged,' ..
  'arg0=org.freedesktop.appearance,'..
  'arg1=color-scheme'
}

local detect_scheme_change = function(channel_id, data, name)
  local line = table.concat(data)
  local match_output = tonumber(string.match(line, "uint32 (%d)"))

  if match_output == 1 then
    vim.api.nvim_command('set background=dark')
  elseif match_output == 2 then
    vim.api.nvim_command('set background=light')
  end
end

vim.fn.jobstart(monitor_command, { on_stdout = detect_scheme_change } )
{% endif %}