-- Common code between [[Module:hi-headword]] and [[Module:pa-headword]].

local export = {}
local m_links = require("Module:links")

export.pos_functions = {}

local rfind = mw.ustring.find
local rmatch = mw.ustring.match
local rsplit = mw.text.split

local function glossary_link(anchor, text)
	text = text or anchor
	return "[[Appendix:術語表#" .. anchor .. "|" .. text .. "]]"
end

local function process_genders(data, genders)
	for _, g in ipairs(genders) do
		if g == "m" or g == "f" or g == "m-p" or g == "f-p" or g == "mf" or g == "mf-p" or g == "mfbysense" or g == "mfbysense-p" or g == "?" then
			table.insert(data.genders, g)
		else
			error("Invalid gender: " .. (g or "(nil)"))
		end
	end
end

export.pos_functions.adjectives = {
	params = {
		["comparative"] = {},
		["superlative"] = {},
		[1] = {alias_of = "comparative"},
		[2] = {alias_of = "superlative"},
		["f"] = {list = true},
		["m"] = {list = true},
		["ind"] = {type = "boolean"},
	},
	func = function(args, data)
		if args["ind"] then
			table.insert(data.inflections, {label = glossary_link("無屈折")})
			table.insert(data.categories, data.langname .. "無屈折形容詞")
		end
		if args["comparative"] then
			table.insert(data.inflections, {label = "比較級", args["comparative"]})
		end
		if args["superlative"] then
			table.insert(data.inflections, {label = "最高級", args["superlative"]})
		end
		if #args["m"] > 0 then
			args["m"].label = "陽性"
			table.insert(data.inflections, args["m"])
		end
		if #args["f"] > 0 then
			args["f"].label = "陰性"
			table.insert(data.inflections, args["f"])
		end
	end,
}

export.pos_functions.ordinals = {
	params = {
		["f"] = {list = true},
		["m"] = {list = true},
		["ind"] = {type = "boolean"},
	},
	func = function(args, data)
		data.pos_category = "形容詞"
		table.insert(data.categories, data.langname .. "數詞")
		if args["ind"] then
			table.insert(data.inflections, {label = glossary_link("無屈折")})
			table.insert(data.categories, data.langname .. "無屈折數詞")
		end
		if #args["m"] > 0 then
			args["m"].label = "陽性"
			table.insert(data.inflections, args["m"])
		end
		if #args["f"] > 0 then
			args["f"].label = "陰性"
			table.insert(data.inflections, args["f"])
		end
	end,
}

export.pos_functions.cardinals = {
	params = {
		["g"] = {list = true},
		["sym"] = {list = true},
	},
	func = function(args, data)
		data.pos_category = "數詞"
		process_genders(data, args["g"])
		if #args["sym"] > 0 then
			args["sym"].label = "原生文字符號"
			table.insert(data.inflections, args["sym"])
		end
	end,
}

local function nouns(plpos)
	return {
		params = {
			["g"] = {list = true, default = "?"},
			["pl"] = {list = true},
			["f"] = {list = true},
			["m"] = {list = true},
			["ind"] = {type = "boolean"},
		},
		func = function(args, data)
			process_genders(data, args["g"])
			if args["ind"] then
				if #args["pl"] > 0 then	
					error("不能同時指定 ind= 和 pl=")
				end
				table.insert(data.inflections, {label = glossary_link("無屈折")})
				table.insert(data.categories, data.langname .. "無屈折" .. plpos)
			elseif #args["pl"] > 0 then
				args["pl"].label = "複數"
				table.insert(data.inflections, args["pl"])
			end
			if #args["m"] > 0 then
				args["m"].label = "陽性"
				table.insert(data.inflections, args["m"])
			end
			if #args["f"] > 0 then
				args["f"].label = "陰性"
				table.insert(data.inflections, args["f"])
			end
			if #args["m"] > 0 or #args["f"] > 0 then
				table.insert(data.categories, data.langname .. " " .. plpos .. " with other-gender equivalents")
			end
		end,
	}
end

export.pos_functions["名詞"] = nouns("名詞")
export.pos_functions["專有名詞"] = nouns("專有名詞")

export.pos_functions.pronouns = {
	params = {
		["g"] = {list = true},
	},
	func = function(args, data)
		process_genders(data, args["g"])
	end,
}

export.pos_functions.verbs = {
	params = {
		[1] = {},
		["g"] = {list = true},
	},
	func = function(args, data)
		data.genders = args["g"]

		if args[1] then
			local label, cat
			if args[1] == "t" then
				label = "及物"
				table.insert(data.categories, data.langname .. "及物動詞")
			elseif args[1] == "i" then
				label = "不及物"
				table.insert(data.categories, data.langname .. "不及物動詞")
			elseif args[1] == "d" then
				label = "雙及物"
				table.insert(data.categories, data.langname .. "雙及物動詞")
			elseif args[1] == "it" or args[1] == "ti" then
				label = "可及物可不及物"
				table.insert(data.categories, data.langname .. "及物動詞")
				table.insert(data.categories, data.langname .. "不及物動詞")
			else
				error("Unrecognized param 1=" .. args[1] .. ": Should be 'i' = intransitive, 't' = transitive, or 'it'/'ti' = ambitransitive")
			end
			table.insert(data.inflections, {label = glossary_link(label)})
		end

		local head = data.heads[1]
		if head:find(" ") then
			local base_verb = m_links.remove_links(head):gsub("^.* ", "")
			table.insert(data.categories, "以" .. base_verb .. "構成的"..data.langname .. "複合動詞")
		end
	end,
}

local function pos_with_gender()
	return {
		params = {
			["g"] = {list = true},
		},
		func = function(args, data)
			data.genders = args["g"]
		end,
	}
end

export.pos_functions["數詞"] = pos_with_gender()
export.pos_functions["後綴"] = pos_with_gender()
export.pos_functions["形容詞變格形"] = pos_with_gender()
export.pos_functions["名詞變格形"] = pos_with_gender()
export.pos_functions["代詞變格形"] = pos_with_gender()
export.pos_functions["限定詞變格形"] = pos_with_gender()
export.pos_functions["動詞變位形式"] = pos_with_gender()
export.pos_functions["後置詞變格形"] = pos_with_gender()
export.pos_functions["代詞"] = export.pos_functions["pronouns"]
export.pos_functions["形容詞"] = export.pos_functions["adjectives"]
export.pos_functions["動詞"] = export.pos_functions["verbs"]
export.pos_functions["序數詞"] = export.pos_functions["ordinal"]
export.pos_functions["基數詞"] = export.pos_functions["cardinal"]

return export