Modul:dng-pron

local export = {}
local find = mw.ustring.find
local gsub = mw.ustring.gsub
local match = mw.ustring.match
local gmatch = mw.ustring.gmatch
local gsplit = mw.text.gsplit
local lower = mw.ustring.lower
local upper = mw.ustring.upper

local initialConv = {
	 = "p",  = "t",  = "k",
	 = "pʰ",  = "tʰ",  = "kʰ",
	 = "t͡s",  = "ʈ͡ʂ", 
	 = "t͡sʰ",  = "ʈ͡ʂʰ", 
	 = "m",  = "n",  = "ŋ",
	 = "f",  = "s",  = "ʂ",  = "ɕ",  = "x",
	 = "v",  = "l",  = "ʐ",  = "",  = "l",
	 = "",
}

local finalConv = {
	 = "z̩",  = "ɛɻ",

	 = "a",  = "ɔ",  = "ə",
	 = "ɛ",  = "ei",  = "ou",
	 = "æ̃",  = "əŋ",  = "ɑŋ",  = "uŋ",

	 = "i",  = "ia",  = "iə",
	 = "iɔː",  = "iou",
	 = "iæ̃",  = "iŋ",  = "iɑŋ",

	 = "u",  = "ua",  = "uɛ",  = "uə",
	 = "uɛi",  = "uei",
	 = "uæ̃",  = "uɑŋ",

	 = "y",  = "yə",
	 = "yæ̃",  = "yŋ",
}

local toneConv = {
	 = "²⁴",  = "⁵¹",  = "⁴⁴",  = "⁰",
}

local function fix(initial, final)

	return initial, final
end

local function warn(initial, final, tone)	
	if not initialConv then
		error("Invalid initial: " .. initial)
	end

	if not finalConv then
		error("Invalid final: " .. final)
	end

	if tone == "4" then
		error("Tone 4 currently not supported")
	end
end

function export.convert(text, scheme)
	if type(text) == "table" then
		text, scheme = text.args, text.args
	end

	local result = {}
	for word in gsplit(text, '/') do
		local converted = {}

		local extra2 = match(word, '^*')
		for syllable in gmatch(word, '+*') do
			local initial, final, erhua, tone, extra = match(syllable, '^(?)(+)(р?)()(*)$')
			local caps = false
			initial = initial or ''
			
			if find(initial .. final, '') then
				caps = true
				initial, final = lower(initial), lower(final)
			end

			warn(initial, final, tone)

			initial, final = fix(initial, final)

			if final == 'э' and erhua == 'р' then
				final, erhua = 'эр', ''
			end

			if scheme == 'IPA' then
				initial = initialConv
				final = finalConv
				tone = toneConv
--[[
				if erhua == 'r' then
					if find(final, '^y') then -- 撮口呼
						final = 'yɚ'
					elseif find(final, '^i') then -- 齊齒呼
						final = 'iɚ'
					elseif find(final, '^u') then -- 合口呼
						final = 'uɚ'
					elseif (final == 'o' or final == 'oŋ') and find(initial, '^') then
						final = 'ɚ'
					elseif final == 'o' or final == 'oŋ' then
						final = 'uɚ'
					else -- 開口呼
						final = 'ɚ'
					end
				end
--]]
				syllable = initial .. final .. tone
				syllable = gsub(syllable, 'ʈ͡ʂ(ʰ?)', 't͡ɕ%1')
				syllable = gsub(syllable, 'ʂ(ʰ?)', 'ɕ%1')
				syllable = gsub(syllable, '(ʂʰ?)z̩', '%1ʐ̩')
				syllable = gsub(syllable, 'ʐz̩', 'ʐ̩')

				table.insert(converted, syllable)
			else
				error('Convert to what representation?')
			end
		end

		if scheme == 'IPA' then
			local text = '/' .. table.concat(converted, ' ') .. '/'
			table.insert(result, text)
		end
	end

	if scheme == 'IPA' then
		return table.concat(result, ', ')
	end
end

function export.process(text)
	local readings = {}
	for reading in gsplit(text, '/') do
		local tones = {}
		for tone in gmatch(reading, '%d+') do
			tone = gsub(tone, "()", { = "I",  = "II",  = "III"})
			table.insert(tones, tone)
		end
		local cyr = gsub(reading, '%d', '')
		local lat = require('Module:dng-translit').tr(cyr, nil, 'Cyrl')
		table.insert(readings, string.format("] (%s, %s)", cyr, cyr, lat, table.concat(tones, '-')))
	end
	
	return table.concat(readings, ' / ')
end

return export