#!/usr/bin/env ruby

$LOAD_PATH.unshift File.expand_path(File.dirname(__FILE__) + '/../lib')
begin
  require 'redis'
rescue LoadError
  require 'rubygems'
  require 'redis'
end
require 'soulmate'
require 'optparse'

parser = OptionParser.new do |opts|
  opts.banner = "Usage: soulmate [options] COMMAND"

  opts.separator ""
  opts.separator "Options:"

  opts.on("-r", "--redis [HOST:PORT]", "Redis connection string") do |host|
    Soulmate.redis = host
  end

  opts.on("-s", "--stop-words [FILE]", "Path to file containing a list of stop words") do |fn|
    File.open(fn) do |file|
      Soulmate.stop_words = file.readlines.map{ |l| l.strip }
    end
  end

  opts.on("-h", "--help", "Show this message") do
    puts opts
    exit
  end

  opts.separator ""
  opts.separator "Commands:"
  opts.separator "  load   TYPE        Replaces collection specified by TYPE with items read from stdin in the JSON lines format."
  opts.separator "  add    TYPE        Adds items to collection specified by TYPE read from stdin in the JSON lines format."
  opts.separator "  remove TYPE        Removes items from collection specified by TYPE read from stdin in the JSON lines format. Items only require an 'id', all other fields are ignored."
  opts.separator "  query  TYPE QUERY  Queries for items from collection specified by TYPE."
end

def load(type)
  puts "Loading items of type #{type}..."
  items = $stdin.read.split("\n").map { |l| MultiJson.decode(l) }
  loaded = Soulmate::Loader.new(type).load(items)
  puts "Loaded a total of #{loaded.size} items"
end

def add(type)
  puts "Adding items of type #{type}..."
  loader = Soulmate::Loader.new(type)
  items = $stdin.read.split("\n").map { |l| MultiJson.decode(l) }
  items.each do |item|
    loader.add(item)
  end
  puts "Loaded a total of #{items.size} items"
end

def remove(type)
  puts "Removing items of type #{type}..."
  loader = Soulmate::Loader.new(type)
  items = $stdin.read.split("\n").map { |l| MultiJson.decode(l) }
  items.each do |item|
    loader.remove(item)
  end
  puts "Removed a total of #{items.size} items"
end

def query(type, query)
  puts "> Querying '#{type}' for '#{query}'"
  matcher = Soulmate::Matcher.new(type)
  results = matcher.matches_for_term(query, :limit => 0)
  results.each do |item|
    puts MultiJson.encode(item)
  end
  puts "> Found #{results.size} matches"
end

parser.parse!

case ARGV[0]
when 'load'
  load ARGV[1]
when 'add'
  add ARGV[1]
when 'remove'
  remove ARGV[1]
when 'query'
  query ARGV[1], ARGV[2]
else
  puts parser.help
end