-- Create a table of icons to display on the template test case page

require('strict')

local p = {}
local m_iconData = mw.loadData("Module:Icon/data")
local m_iconSandboxData = mw.loadData("Module:Icon/data/sandbox")

local function mergeTables(...)
	local ret = {}
	for _, t in ipairs{...} do
		for k, v in pairs(t) do
			ret[k] = v
		end
	end
	return ret
end

local function reconstituteAliases(iconDataCollection)
	local ret = {}
	for code, iconData in pairs(iconDataCollection) do
		local outputData = ret[iconData.canonicalCode] or {
			aliases = {},
			image = iconData.image,
			tooltip = iconData.tooltip,
			link = iconData.link,
		}
		if code ~= iconData.canonicalCode then
			table.insert(outputData.aliases, code)
		end
		ret[iconData.canonicalCode] = outputData
	end
	return ret
end

local function makeTableData(iconDataCollection)
	local ret = {}
	for code, iconData in pairs(reconstituteAliases(iconDataCollection)) do
		if code ~= '_DEFAULT' then
			table.insert(ret, {code = code, description = iconData.tooltip, aliases = iconData.aliases})
		end
	end
	table.sort(
		ret,
		function(t1, t2)
			return t1.code < t2.code
		end
	)
	for _, t in ipairs(ret) do
		table.sort(t.aliases)
	end
	return ret
end

function p.testcases(frame)
	local tableData = makeTableData(mergeTables(m_iconData, m_iconSandboxData))
	local ret = {
		'{| class="wikitable sortable"',
		'! Code',
		'! [[Template:Icon|Template]]',
		'! [[Template:Icon/sandbox|Sandbox]]',
		'! Description',
	}
	
	local function addRow(code, description)
		table.insert(ret, '|-')
		table.insert(ret, '| <code>' .. mw.text.nowiki('{{icon|' .. code .. '}}') .. '</code>')
		table.insert(ret, '| style="text-align: center" | ' .. frame:expandTemplate{title = 'icon', args = {code}})
		table.insert(ret, '| style="text-align: center" | ' .. frame:expandTemplate{title = 'icon/sandbox', args = {code}})
		table.insert(ret, '| ' .. description)
	end
	
	for _, rowData in ipairs(tableData) do
		addRow(rowData.code, rowData.description)
		for _, alias in ipairs(rowData.aliases) do
			addRow(alias, rowData.description)
		end
	end
	table.insert(ret, '|}')
	return table.concat(ret, '\n')
end

function p.main(frame)
	local tableData = makeTableData(m_iconData)
	local ret = {
		'{| class="wikitable sortable"',
		'! Icon',
		'! Description',
		'! Code',
		'! Aliases'
	}
	for _, rowData in ipairs(tableData) do
		table.insert(ret, '|-')
		table.insert(ret, '| style="text-align: center" | ' .. frame:expandTemplate{title = 'icon', args = {rowData.code}})
		table.insert(ret, '| ' .. rowData.description)
		table.insert(ret, '| <code>' .. mw.text.nowiki('{{icon|' .. rowData.code .. '}}') .. '</code>')
		local aliasText = {}
		for _, alias in ipairs(rowData.aliases) do
			table.insert(aliasText, '<code>' .. alias .. '</code>')
		end
		table.insert(ret, '| ' .. table.concat(aliasText, ', '))
	end
	table.insert(ret, '|}')
	return table.concat(ret, '\n')
end

return p