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# -*- coding: utf-8 -*-
require "shellwords"
class SearchController < ApplicationController
def search
@show_search = true
# TODO: OR とか () とか対応したいよね
unless params[:query]
render_tweets(Tweet.where(:id => -1))
return
end
words = Shellwords.shellwords(params[:query])
dateformat = "(20[0-9]{2})([-_\/]?)([0-9]{2})\\2([0-9]{2})" # $1: year, $3: month, $4: day
result = words.inject(Tweet.order_by_id) do |tweets, word|
case word
when /^-?[a-z]+:.+$/
# 特殊
key, value = word.split(":", 2)
case key.downcase
when /^-?user$/
user = User.cached(value)
if key[0] == "-"
tweets.where("user_id != ?", user ? user.id : -1)
else
tweets.where(:user_id => user ? user.id : -1)
end
when /^-?fav/
search_unless_zero(tweets, "favorites_count", key[0], value)
when /^-?re?t/
search_unless_zero(tweets, "retweets_count", key[0], value)
when /^-?reactions?$/
search_unless_zero(tweets, "favorites_count + retweets_count", key[0], value)
when "order"
case value
when "old", /^asc/
tweets.order("id ASC")
when "reaction"
tweets.order_by_reactions
when /^fav/
tweets.order_by_favorites
when /^re?t/
tweets.order_by_retweets
else
tweets
end
when /^-?text$/
sourcetext = word.split(":", 2).last.gsub("%", "\\%").gsub("*", "%")
sourcetext = "%#{sourcetext}%".gsub(/%+/, "%")
op = key[0] == "-" ? " NOT LIKE " : " LIKE "
tweets.where("text #{op} ?", sourcetext)
when /^-?source$/
sourcetext = word.split(":", 2).last.gsub("%", "\\%").gsub("*", "%")
op = key[0] == "-" ? " NOT LIKE " : " LIKE "
tweets.where("source #{op} ? OR source #{op} ?", "<url:%:#{sourcetext.gsub(":", "%3A")}>", "<url:%:#{CGI.escape(sourcetext)}>")
else
# unknown command
tweets
end
when /^-?#{dateformat}\.\.#{dateformat}$/
since = Time.utc($1.to_i, $3.to_i, $4.to_i) - 9 * 60 * 60
to = Time.utc($5.to_i, $7.to_i, $8.to_i + 1) - 9 * 60 * 60
if word[0] == "-"
tweets.where("id < ? OR id >= ?", first_id_of_time(since), first_id_of_time(to))
else
tweets.where(:id => first_id_of_time(since)...first_id_of_time(to))
end
else
# TODO: ツイート検索
tweets
end
end
render_tweets(result)
end
private
def first_id_of_time(time)
p (time.to_i * 1000 - 1288834974657) << 22
end
def search_unless_zero(tweets, column, flag, value)
num = Integer(value) rescue 0
n = flag == "-"
unless num == 0
tweets.where("#{column}#{n ? "<" : ">="} ?", num)
else
tweets
end
end
end
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