local alpha = require("alpha")

local col = function(strlist, opts)
  -- strlist is a TABLE of TABLES, representing columns of text
  -- opts is a text display option

  -- column spacing
  local padding = 12
  -- fill lines up to the maximim length with 'fillchar'
  local fillchar = ' '
  -- columns padding char (for testing)
  local padchar = ' '

  -- define maximum string length in a table
  local maxlen = function(str)
    local max = 0
    for i in pairs(str) do
      if #str[i] > max then
        max = #str[i]
      end
    end
    return max
  end

  -- add as much right-padding to align the text block
  local pad = function(str, max)
    local strlist = {}
    for i in pairs(str) do
      if #str[i] < max then
        local newstr = str[i] .. string.rep(fillchar, max-#str[i])
        table.insert(strlist, newstr)
      else
        table.insert(strlist, str[i])
      end
    end
    return strlist
  end

  -- this is a table for text strings
  local values = {}
  -- process all the lines
  for i=1,maxlen(strlist) do
    local str = ''
    -- process all the columns but last, because we dont wand extra padding
    -- after last column
    for column=1,#strlist-1 do
      local maxstr = maxlen(strlist[column])
      local padded = pad(strlist[column], maxstr)
      if strlist[column][i] == nil then
        str = str .. string.rep(fillchar, maxstr) .. string.rep(padchar, padding)
      else
        str = str .. padded[i] .. string.rep(padchar, padding)
      end
    end

    -- lets process the last column, no extra padding
    do
      local maxstr = maxlen(strlist[#strlist])
      local padded = pad(strlist[#strlist], maxstr)
      if strlist[#strlist][i] == nil then
        str = str .. string.rep(fillchar, maxlen(strlist[#strlist]))
      else
        str = str .. padded[i]
      end
    end

    -- insert result into output table
    table.insert(values, { type = "text", val = str, opts = opts })
  end

  return values
end

local window_managment = {

  "ALT-ENT		new tab terminal",
  "ALT-NUM		move to tab n",
  "ALT-v   		horizontal split",
  "ALT-v   		vertical split",
}

local text_managment = {
  "CTRL-t		new file",
  "CTRL-w		:q",
  "CTRL-n		open file manager"
}


local applications = {
  "ALT+ESC          htop",
  "ALT+t            termusic",
  "ALT+r            ranger",
  "ALT+m            matrix",

}




local head = {
    type = "text",
    val = {
[[   .█▄╥                                   _▄K¥▄   ]],
[[    █  '▀▄_             ▄▄              ╓▄▀"   ▀▌ ]],
[[   █      "▀▄,          ▓ ▀▀▄         ▄▀-       █ ]],
[[  ▐▌         ▀▄▌▀▀▀▀'""▀▀█   ▀▄    _▄▀          ▓ ]],
[[  ▓            "▓╥            "▓_.▓▀            ╫ ]],
[[ )▌                             ▀█              ╫ ]],
[[ ▐∩                                             █ ]],
[[ ▐∩                                            ▐▌ ]],
[[ ▐µ                                            █▌ ]],
[[  ▓     ╨▓▓█▄▄╥_             ,▄▄█████▄        █   ]],
[[  ▐▄        `"▀▀██▄        ▐███▌╓_          .▓"   ]],
[[   "▓▄    _▄▄███▀'  ▄▄▄▄┐    "▀▀█████▄   .▄K▀▀▀▀█ ]],
[[▐▌▀▀▀▀ª   ▀▀'                      "▀▄,  _  _╥▄▀  ]],
[[ ▓▄   _╥µ __         ,▄▄    ]µ     ` ╫▌@╨   ▀▌    ]],
[[  "▀▄`  ▓K"     *▌▄▄▀"  "▀▀▓▀                ▀▄   ]],
[[   █.              ▐▌     j▌             _    █   ]],
[[  █      ,          ▀▄    ▐▌           ▄▓"▀▀▀▀"   ]],
[[ ▐█K▀▀"▀¥██▌▄▄_      ╨▓_ _█      ,▄▄K▀▀           ]],
[[          ▐▌  "▀W      "▀"      "█µ               ]],
[[           ▐█                     "▓_             ]],
[[         _▓▀                        ▀▄            ]],
[[        j█____ _                     ▀▄           ]],
[[           ''"▓"                      ▓⌐          ]],
[[              █                       ▐▌          ]],
[[              ▀                        ▀          ]],

},
opts = {
position = "center",
hl = "Type",
},
}

local foot = {
type = "text",
val = "footer",
opts = {
position = "center",
hl = "Number",
},
}

local block1 = {
type = "group",
val = col({window_managment, text_managment}, { position = "center", hl = {{ "Title", 0, 7 }, {"Comment", 7, 37}, {"Title", 37, 44}, {"Comment", 44, -1}}}),
opts = {
spacing = 0
},
}

local block2 = {
type = "group",
val = col({applications}, { position = "center", hl = {{"Comment", 7, -1}, { "Title", 0, 7 }} }),
opts = {
spacing = 0
},
}


local opts = {
layout = {
{ type = "padding", val = 2 },
head,
{ type = "padding", val = 2 },
block1,
{ type = "padding", val = 2 },
block2,
},
opts = {
noautocmd = true,
margin = 5,
},
}
alpha.setup(opts)