--------------------------------------------------------------------------------
-- set up paths

local conky_dir = debug.getinfo(1).source:match("@?(.*/)")
local subdirs = {
   '?.lua',
   'drawing/?.lua',
   'schema/?.lua',
   'core/?.lua',
   'core/widget/?.lua',
   'core/widget/arc/?.lua',
   'core/widget/text/?.lua',
   'core/widget/timeseries/?.lua',
   'core/widget/rect/?.lua',
   'core/widget/line/?.lua',
   'lib/share/lua/5.4/?.lua',
   'lib/share/lua/5.4/?/init.lua',
}

for i = 1, #subdirs do
   subdirs[i] = conky_dir..subdirs[i]
end

package.path = table.concat(subdirs, ';')

package.cpath = conky_dir..'lib/lib/lua/5.4/?.so;'

--------------------------------------------------------------------------------
-- select global config to use (fallback to default if none found)

local yaml = require 'lyaml'
local i_o = require 'i_o'

local schema_path = conky_dir..'/config/schema.yml'
local validate_config

if i_o.exe_exists('yajsv') then
   validate_config = function(config_path)
      local cmd = string.format('yajsv -q -s %s %s', schema_path, config_path)
      return i_o.exit_code_cmd(cmd) == 0
   end
else
   validate_config = function(_)
      print('WARNING: could not validate config')
      return true
   end
end

local find_valid_config = function(paths)
   for i = 1, #paths do
      local path = paths[i]
      local r = i_o.read_file(path)
      if r ~= nil then
         if validate_config(path) then
            i_o.printf('INFO: Using config at %s', path)
            return path, yaml.load(r)
         else
            i_o.printf('WARNING: %s did not pass; trying next', path)
         end
      else
         i_o.printf('INFO: could not find %s; trying next', path)
      end
   end
   assert(false, 'ERROR: could not load valid config')
end

local get_config_dir = function()
   return (os.getenv("XDG_CONFIG_HOME") or os.getenv("HOME")..'/.config')..'/'
end

local try_config_paths = {
   get_config_dir()..'conky.ymll',
   conky_dir..'config/fallback.yml'
}

local config_path, config = find_valid_config(try_config_paths)

local bootstrap = config.bootstrap

local startup_hook = string.format(
   'start %f %s %s %s',
   bootstrap.update_interval,
   config_path,
   package.path,
   package.cpath
)

conky.config = {
	background = false,

	-- adjust cpu dial sensitivity (1-14)
	cpu_avg_samples = 4,
	net_avg_samples = 1,

	out_to_console = false,

	own_window = true,
	own_window_type = 'override',
	own_window_transparent = true,
	own_window_hints = 'undecorated,below,sticky,skip_taskbar,skip_pager',
    xinerama_head = 0,

	double_buffer = true,
	minimum_width = bootstrap.dimensions[1],
	minimum_height = bootstrap.dimensions[2],

	draw_shades = false,
	draw_outline = false,
	draw_borders = false,
	gap_x = 0,
	gap_y = 0,
	alignment = 'top_left',

	no_buffers = true,

	-- Lua Load
	lua_load = conky_dir..'main.lua',
	lua_draw_hook_post = 'main',
	lua_startup_hook = startup_hook
}

--control updates entirely in lua

conky.text = [[]]