--[[
                                                                                   
           GJ5GPP#           ####         ██████╗  █████╗ ██████╗  ██████╗██╗   ██╗ ██████╗██╗     ███████╗ 
           5:. !5          #^!??7B        ██╔══██╗██╔══██╗██╔══██╗██╔════╝╚██╗ ██╔╝██╔════╝██║     ██╔════╝ 
              !Y ###########7^            ██████╔╝███████║██████╔╝██║      ╚████╔╝ ██║     ██║     █████╗   
              G ~J?JJJJJJJJJJ^?           ██╔══██╗██╔══██║██╔══██╗██║       ╚██╔╝  ██║     ██║     ██╔══╝   
             #^!:#           G 5          ██████╔╝██║  ██║██║  ██║╚██████╗   ██║   ╚██████╗███████╗███████╗ 
    #G5JJ?JJ5:?@J:         #?7J.JJ?JJYPB  ╚═════╝ ╚═╝  ╚═╝╚═╝  ╚═╝ ╚═════╝   ╚═╝    ╚═════╝╚══════╝╚══════╝ 
  #?!JPBB##G.~77B!!      #J~!7??.B##BGY7!P                                                                  
 P:Y#      ^?  P:J:Y    5~J~J#  ?7      B~!     * simple statusbar for            * inspired by airline,    
B.G       ~7    #.Y.G G!?#~?     ~Y       ~7       when you'd rather                 but without the        
J:       7.YYY55G:!?.7!B #.B     #~B      P.       use something you                 arrow things and       
P.#      BBGGPPPY 7Y7P    :Y       #      7^       can fix yourself                  way simpler            
 ?^B           #~7        G:5            J:B                                                                
  P~7P##    #P?~5          B!!YB#    #BY~7#     * by alemidev <me@alemi.dev>      * drive less, bike more!  
    GJ?7???7?JG              BY?7???77?5#                                                                   
        ###                      ####                                                                       
                                                                                                            
]]--

--- global statusline object
local BARCYCLE = {
	mode_string = {
		['n' ] = 'NORMAL',
		['no'] = 'NORMAL op',
		['v' ] = 'VISUAL',
		['V' ] = 'V LINE',
		[''] = 'V BLOCK',
		['s' ] = 'SELECT',
		['S' ] = 'S LINE',
		[''] = 'S BLOCK',
		['i' ] = 'INSERT',
		['R' ] = 'REPLACE',
		['Rv'] = 'V REPLACE',
		['c' ] = 'CMD',
		['cv'] = 'VIM EX',
		['ce'] = 'EX',
		['r' ] = 'PROMPT',
		['rm'] = 'MORE',
		['r?'] = 'CONFIRM',
		['!' ] = 'SHELL',
		['t' ] = 'TERMINAL',
	},
	mode_highlight = {
		['n' ] = '%#NormalMode#',
		['no'] = '%#NormalMode#',
		['v' ] = '%#VisualMode#',
		['V' ] = '%#VisualMode#',
		[''] = '%#VisualMode#',
		['s' ] = '%#VisualMode#',
		['S' ] = '%#VisualMode#',
		[''] = '%#VisualMode#',
		['i' ] = '%#InsertMode#',
		['R' ] = '%#InsertMode#',
		['Rv'] = '%#InsertMode#',
		['c' ] = '%#SpecialMode#',
		['cv'] = '%#SpecialMode#',
		['ce'] = '%#SpecialMode#',
		['r' ] = '%#SpecialMode#',
		['rm'] = '%#SpecialMode#',
		['r?'] = '%#SpecialMode#',
		['!' ] = '%#SpecialMode#',
		['t' ] = '%#SpecialMode#'
	},
}

function BARCYCLE:linter()
	local n_warns = 0
	local warns = vim.diagnostic.get(0, { severity = vim.diagnostic.severity.WARN })
	if warns ~= nil then n_warns = #warns end

	local n_errors = 0
	local errors = vim.diagnostic.get(0, { severity = vim.diagnostic.severity.ERROR })
	if errors ~= nil then n_errors = #errors end

	if n_warns == 0 and n_errors == 0 then
		return 'OK'
	else
		return string.format("%dE %dW", n_errors, n_warns)
	end
end

function BARCYCLE:combo()
	if vim.g.combo ~= nil then
		return vim.g.combo
	end
	return ""
end

function BARCYCLE:git()
	if vim.fn['fugitive#Head']() ~= nil then
		return vim.fn['fugitive#Head']()
	else
		return ""
	end
end

function BARCYCLE:lsp()
	local clients = vim.lsp.buf_get_clients(0)
	if #clients > 0 then
		local client_names = {}
		for _, client in pairs(clients) do
			client_names[#client_names+1] = client.name
		end
		return "[" .. table.concat(client_names, ",") .. "]"
	else
		return ""
	end
end

function BARCYCLE:statusline()
	local mode = vim.fn.mode()
	local line = {
		self.mode_highlight[mode] .. " " .. self.mode_string[mode],
		"%#StatusLineBlock# %Y", -- type of file
		self:combo(),
		self:linter(),
		"%#StatusLine#",
		self:git(),
		"%r%h%w%m %<%F ", -- file flags (RO, HELP, PREVIEW, MODIFY), file path
		"%=", -- change alignment
		self:lsp(),
		"%{&fileencoding?&fileencoding:&encoding}",
		"%{&fileformat}",
		"%#StatusLineBlock# %3l:%-3c %3p%%", -- cursor coordinates: line (formatted), column (formatted), percentage (formatted)
		self.mode_highlight[mode] .. " %n " .. "%0*" -- buffer number
	}
	return table.concat(line, " ")
end

function BARCYCLE.display() return BARCYCLE:statusline() end

return BARCYCLE