"use strict";

const lunr = require('lunr')

class Search {
  constructor() {
    this.index = lunr(function() {
      this.field('name'        , { boost: 10 })
      this.field('description' , { boost:  4 })
      this.field('author'      , { boost:  6 })
      this.field('readme')
    })
  }

  query(q) {
	  return q === '*'
      ? this.storage.config.localList.get().map( function( pkg ) {
        return { ref: pkg, score: 1 };
      }) : this.index.search(q);
  }

  add(pkg) {
    this.index.add({
      id:           pkg.name,
      name:         pkg.name,
      description:  pkg.description,
      author:       pkg._npmUser ? pkg._npmUser.name : '???',
    })
  }

  add(pkg) {
    this.index.add({
      id:           pkg.name,
      name:         pkg.name,
      description:  pkg.description,
      author:       pkg._npmUser ? pkg._npmUser.name : '???',
    })
  }

  remove(name) {
    this.index.remove({ id: name })
  }

  reindex() {
    var self = this
    this.storage.get_local(function(err, packages) {
      if (err) throw err // that function shouldn't produce any
      var i = packages.length
      while (i--) {
        self.add(packages[i])
      }
    })
  }

  configureStorage(storage) {
    this.storage = storage
    this.reindex()
  }
}

module.exports = new Search();