1
restaurant-search/build/tripadvisor.go
2015-09-17 16:37:08 +09:00

81 lines
2.5 KiB
Go

/*
* Copyright (c) 2015 Alex Yatskov <alex@foosoft.net>
* Author: Alex Yatskov <alex@foosoft.net>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package main
import (
"errors"
"fmt"
"strconv"
"strings"
"github.com/PuerkitoBio/goquery"
)
type tripadvisor struct {
scrapeCtx
}
func (tripadvisor) index(doc *goquery.Document) (string, []string) {
var reviewUrls []string
doc.Find("a.property_title").Each(func(index int, sel *goquery.Selection) {
if href, ok := sel.Attr("href"); ok {
reviewUrls = append(reviewUrls, href)
}
})
var nextIndexUrl string
if href, ok := doc.Find("div.deckTools.btm a.nav.next.rndBtn.rndBtnGreen.taLnk").Attr("href"); ok {
nextIndexUrl = href
}
return nextIndexUrl, reviewUrls
}
func (tripadvisor) review(doc *goquery.Document) (name, address string, features map[string]feature, err error) {
name = strings.TrimSpace(doc.Find("h1#HEADING").Text())
address = strings.TrimSpace(doc.Find("address span.format_address").Text())
ratings := doc.Find("ul.barChart div.ratingRow img.sprite-rating_s_fill")
if ratings.Length() != 4 {
err = errors.New("missing rating data")
return
}
features = make(map[string]feature)
for index, category := range []string{"food", "service", "value", "atmosphere"} {
altText, _ := ratings.Eq(index).Attr("alt")
valueText := strings.Split(altText, " ")[0]
var value float64
if value, err = strconv.ParseFloat(valueText, 8); err != nil {
err = fmt.Errorf("invalid value for %s", category)
return
}
features[category] = feature{value/2.5 - 1.0, 1.0}
}
return
}