وحدة:On This Day

--[[ ====================== حدث في مثل هذه اليوم================
هذه الوحدة تجلب الأحداث من الصفحات الهجرية والميلادية
]]
local p = {} --p stands for package
local hc = require "Module:Hijri/core"
local hijri = require "Module:Hijri"
local text =mw.text
local string = mw.ustring
local sandbox = ""
local maxlength = 1100
--[[========= USEFULL Functions ==========]]

function esc_pattern(str)
	return string.gsub(str, "%p", "%%%1")
end

function events_compare_level_year(a,b)
	if a.level < b.level then
		return true
	elseif a.level == b.level then
		if a.jd < b.jd then
			return true
		end
	end
	return false
end

function events_compare_jd(a,b)
	if a.jd < b.jd then
		return true
	end
	return false
end


function get_events(events_array,event_text,isHijri,month,day)
	local events = events_array or {}
	local ei
	local gpic = string.match(s,"%[%[ملف:[^%]]*%]%]")
	if gpic then
		s= string.gsub(s, esc_pattern(gpic) .. "[\n]*","")
	end
	local s=text.split(s, "<!%-%-[%s]*الأحداث[%s]*%-%->")
	local p= string.find(s[2],"<noinc",1,true)
	if p then
		s[2] = text.trim(string.sub(s[2], 1,p-1))
	end
	p=string.find(s[2],"*",1,true)
	local e=text.split(string.sub(s[2], p+1), "\n* ",true)
	for i=1,#e do
		local es,inty,jd={}
		local stry=string.match(e[i], "%[%[[0-9 هـ]+%]%]") or string.match(e[i], "%[%[[0-9 هـ]+|")
		if stry then
			stry = string.sub(stry,3,-3)
			stry=string.gsub(string.gsub(stry, "ه",""), "_","")
			inty = tonumber(stry)
		else
			mw.log(e[i-1])
			error("Can't Find Year in event " .. i)
		end

		if isHijri	then
			jd = hc.hijri2jd(inty,month,day)
		else
			jd = hc.gregorian2jd(inty,month,day)
		end
		if string.find(e[i], "**",1,true) then
			local e_splits=text.split(e[i],"\n**",true)
			for ii=2,#e_splits do
				es[ii-1] = e_splits[1] .. e_splits[ii]
			end
		else
			es[1] = e[i]
		end
		
		for ii=1,#es do
			ei=#events+1
			events[ei]={str = es[ii]}
			local strl=string.match(es[ii],"<!%-%-[%s]*م[1-3][%s]*%-%->")
			
			if strl then
				p =string.find(strl,"م") + 1
				events[ei].level=tonumber(string.sub(strl, p,p))
			else
				events[ei].level = 2
			end
			
			events[ei].year = inty
			events[ei].jd = jd
			events[ei].hijri = isHijri
			if string.find(es[ii], "{{ط|(في الصورة)}}",1,true) then
				events[ei].pic = gpic
			end
			
		end
		
	end
	return events,s[1]
end	


function p.onthisday(frame)
	local d 
	if frame.args[3] then
		d = hc.Date('gregorian',tonumber(frame.args[1]),tonumber(frame.args[2]),tonumber(frame.args[3]))
	elseif frame.args[2] then
		d = hc.Date('gregorian',os.date("*t").year,tonumber(frame.args[1]),tonumber(frame.args[2]))
	else
		d = hc.Date('gregorian')
	end
	
	local strtoday = {}
	strtoday['g']	= d.day .. ' ' .. hijri.julian_month_name(d.month)
	local tret,bret,ret = {},{},""
	local events = {}
	local tg = mw.title.new("أرابيكا:في هذا اليوم/" ..  strtoday['g'] .. sandbox)
	if not tg.exists and #sandbox>0 then
		tg = mw.title.new("أرابيكا:في هذا اليوم/" ..  strtoday['g'])
	end		
	d:set_type('hijri')
	strtoday['h'] = d.day .. " " .. hijri.hijri_month_name(d.month)
	local th = mw.title.new("أرابيكا:في هذا اليوم/" ..  strtoday['h'] .. sandbox)
	if not th.exists and #sandbox>0 then
		th = mw.title.new("أرابيكا:في هذا اليوم/" ..  strtoday['h'])
	end		
	local s_events={}
	
	if tg.exists then
		s = string.gsub(tg:getContent(),"{{أرابيكا:في هذا اليوم/مناسبة هجرية|" .. strtoday['g'] .. "}}","")
		if not th.exists then
			-- early exit no hijri page
			return frame:preprocess(s)
		end
		events,tret['g'] = get_events(events,s,false,d.month,d.day)
	end

	if th.exists then
		s = th:getContent()
		events,tret['h'] = get_events(events,s,true,d.month,d.day)
	end
	
	--order 
	table.sort(events,events_compare_level_year)
	local current_length = 0
	for i=1,#events do
		--ret = ret .. "*" ..  events[i].str .. "-" .. events[i].level .. "-" .. (events[i].year or 'No year').. (events[i].hijri and 'Hijri' or 'Not Hijri') .. "\n" .. (events[i].pic or '')
		if string.len(events[i].str) <= (maxlength-current_length) then
			--s_events[#s_events+1]=events[i].str .. (string.sub(events[i].str,-1)~="\n" and "\n" or "")
			s_events[#s_events+1] = events[i]
			current_length = current_length + string.len(events[i].str)
		elseif current_length>=maxlength then
			break
		end
	end
	
	table.sort(s_events,events_compare_jd)
	local n
	local pics={h='',g=''}
	bret['h'], bret['g'] = '', ''
	for i=1,#s_events do
		n = s_events[i].hijri and 'h' or 'g'
		bret[n] = bret[n] .. "*" .. s_events[i].str .. (string.sub(s_events[i].str,-1)~="\n" and "\n" or "")
		if s_events[i].pic then
			pics[n] = pics[n] .. s_events[i].pic .. "\n"
		end
	end
	ret = tret['h'] .. pics['h'] .. pics['g'] .. bret['h'] .. tret['g'] .. bret['g']

	return frame:preprocess(ret)
end

return p
وحدة:On This Day

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