Module:Mapframe

--Parameter for cleaned-up parent.args (whitespace trimmed, blanks removed)
local Args = {}

local defaults = {}

function setCleanArgs(argsTable)
	local cleanArgs = {}
	for key, val in pairs(argsTable) do
		if type(val) == 'string' then
			val = val:match('^%s*(.-)%s*$')
			if val ~= '' then
				cleanArgs[key] = val
			end
		else
			cleanArgs[key] = val
		end
	end
	return cleanArgs
end

function makeContent(args)
	if args.raw then
		return args.raw
	end

	local content = {};
	local contentIndex = '';
	while Args['type'..contentIndex] do
		local contentArgs = {}
		contentArgs['type'] = Args['type'..contentIndex]
		--todo: Add other relevant args

		content[contentIndex or 1] = makeContentJson(contentArgs)

		if contentIndex == '' then
			contentIndex = 1
		else
			contentIndex = contentIndex + 1
		end
	end
	
	--Single item, no array needed
	if #content==1 then
		return content[1]
	end

	--Multiple items get placed in an array
	local contentArray = '[\n' .. table.concat( content, ',\n') .. '\n]'
	return contentArray
end

function makeContentJson(contentArgs)
	local data = {}
	if contentArgs.type == 'point' then
		data.type = "Feature"
	else
		data.type = "ExternalData"
	end

	--todo: fill out rest of data

	return mw.text.jsonEncode(data)
end

function makeTagAttribs(args, isTitle)
	local attribs = {}
	if args.zoom then
		attribs.zoom = args.zoom
	end
	-- todo: all the others

	return attribs
end

function makeTitleOutput(args, tagContent)
 	local titleTag = mw.text.tag('maplink', makeTagAttribs(args, true), tagContent)
	local spanAttribs = {
		style = "font-size: small;",
		id = "coordinates"
	}
	return mw.text.tag('span', spanAttribs, titleTag)
end

function makeInlineOutput(args, tagContent)
	local tagName = 'maplink'
	if args.frame then
		tagName = 'mapframe'
	end

	return mw.text.tag(tagName, makeTagAttribs(args), tagContent)
end

local p = {}

function p.main(frame)
	local parent = frame.getParent(frame)
	Args = setCleanArgs(parent.args)
 
	local tagContent = makeContent(Args)

	local display = mw.text.split(Args.display, '%s*,%s*')
	local displayInTitle = display[1] == 'title' or display[2] == 'title'
	local displayInline = display[1] == 'inline' or display[2] == 'inline'

	if displayInTitle and displayInline then
		return makeTitleOutput(args, tagContent) .. makeInlineOutput(args, tagContent)
	elseif displayInTitle then
		return makeTitleOutput(args, tagContent)
	elseif displayInline then
		return makeInlineOutput(args, tagContent)
	else
		error( 'Invalid display parameter')
	end

end

return p