local Luan = require "luan:Luan.luan"
local error = Luan.error
local Io = require "luan:Io.luan"
local uri = Io.uri or error()
local Table = require "luan:Table.luan"
local concat = Table.concat or error()
local Lucene = require "luan:lucene/Lucene.luan"
local Shared = require "site:/lib/Shared.luan"
local to_list = Shared.to_list or error()


local function supplementer(doc)
	local t = {}
	t[#t+1] = doc.user_name
	if doc.category ~= nil then
		t[#t+1] = concat(to_list(doc.category)," ")
	end
	t[#t+1] = doc.description
	return {
		free = concat(t," ")
	}
end

local dir = uri("site:/lucene")

local options = {
	supplementer = supplementer
	default_type = Lucene.type.english
	default_fields = {"free"}
}

local Db = Lucene.index(dir,options)

Db.indexed_fields.free = Lucene.type.english
Db.indexed_fields.user_id = Lucene.type.string
Db.indexed_fields.user_name = Lucene.type.english
Db.indexed_fields.category = Lucene.type.english
Db.indexed_fields.description = Lucene.type.english

return Db