Editing Module:Location Table

require('strict')
local persistant = require('Module:Break Isolation').get_module_store('Module:Location Table')
local parse = require('Module:Param Parse')
local edit = 'Unknown <span class="small plainlinks">' .. require('Module:Edit button')() .. '</span>'

persistant.counter = persistant.counter or 0

local p = {}

function p.head(frame)
	assert(not persistant.in_table, 'Second Template:LocTableHead (Missing Template:LocTableBottom?)')
	local args = frame:getParent().args

	persistant.in_table = true
	persistant.json = {}
	persistant.version = args.version
	persistant.location_object = mw.title.getCurrentTitle().fullText
	if args.version then
		persistant.location_object = persistant.location_object .. '#' .. args.version
	end
end

function p.line(frame)
	assert(persistant.in_table, 'Template:LocLine when not in a location table (Missing Template:LocTableHead?)')
	local args = frame:getParent().args

	local loc = args.loc
	local qty = args.quantity
	qty = tonumber(qty or '')
	persistant.json[loc] = qty or -1
	local loc_link = ('[[%s]]'):format(loc)
	local episode = mw.smw.ask{loc_link, '?Episode#=', 'mainlabel=-'}
	episode = episode and episode[1][1]

	persistant.counter = persistant.counter + 1
	local id = 'LOC_' .. persistant.counter

	mw.smw.subobject({
		['Location object'] = persistant.location_object,
		['Located in'] = loc,
		['Location quantity'] = qty or 'Unknown'
	}, id)

	return mw.html.create('tr')
		:attr{ id = id }
		:tag('td'):wikitext(loc_link):done()
		:tag('td'):wikitext(parse.episode_func(episode)):done()
		:tag('td'):wikitext(qty or edit):done()
	:done()
end

function p.bottom(frame)
	local args = frame:getParent().args
	assert(args.version == persistant.version, 'Template:LocTableBottom needs to be transcluded with the same |version= as the corresponding Template:LocTableHead')
	assert(persistant.in_table, 'Template:LocTableBottom when not in a location table (Missing Template:LocTableHead?)')

	if persistant.version then
		mw.smw.subobject({ ['Location JSON'] = mw.text.jsonEncode(persistant.json) }, persistant.version)
	else
		mw.smw.set{ ['Location JSON'] = mw.text.jsonEncode(persistant.json) }
	end

	persistant.in_table = nil
	persistant.json = nil
	persistant.version = nil
	persistant.location_object = nil
end

return p