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crawler.go
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crawler.go
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package main
import (
"context"
"fmt"
"log"
"os"
"strings"
"time"
"github.com/gocolly/colly"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
)
var counter int = 0
var ingred map[string]string
type Recipe struct {
Instructions string
Ingredients []string //[]map[string]string
Name string
Stats []string
}
func main() {
//Mongo
client, err := mongo.NewClient(options.Client().ApplyURI("mongodb+srv://user1:betThisaintthepasswordyougithubbot@cluster0.xojje.gcp.mongodb.net/recipesDB?retryWrites=true&w=majority"))
if err != nil {
log.Fatal(err)
}
ctx, _ := context.WithTimeout(context.Background(), 3600*time.Second)
err = client.Connect(ctx)
if err != nil {
log.Fatal(err)
}
col := client.Database("recipesDB").Collection("recipes")
defer client.Disconnect(ctx)
//Colly collectors
c := colly.NewCollector(
// Visit only domains: hackerspaces.org, wiki.hackerspaces.org
colly.AllowedDomains("recepti.gotvach.bg"),
colly.CacheDir("./gotvach_cache"),
)
statsCollector := c.Clone()
recipeCollector := c.Clone()
//recipes := make([]Recipe, 0)
//global scraper
c.OnHTML("a[href]", func(e *colly.HTMLElement) {
if e.Attr("class") == "title" {
link := e.Attr("href")
recipeCollector.Visit(link)
log.Println("Searching", link)
}
if e.Attr("class") == "prev" {
e.Request.Visit(e.Attr("href"))
}
})
//Print Visiting on Request
c.OnRequest(func(r *colly.Request) {
log.Println("Visiting ", r.URL.String())
})
var stats []string
recipeCollector.OnHTML("div[id = wrap]", func(e *colly.HTMLElement) {
fmt.Printf("Recipe found ")
var ingredients []string
var instructions []string
title := e.ChildText("div[id = content] > div[id=recEntity] > .combocolumn > h1")
if title == "" {
title = "No title Found"
log.Println("No title found")
}
recipe := Recipe{
Name: title,
}
e.ForEach("section.products > ul > li", func(_ int, el *colly.HTMLElement) {
ingredients = append(ingredients, el.Text)
//ingredient := string([]rune(el.Text)[0,strings.Index(el.Text," -"))
//ingred[ingredient]
})
recipe.Ingredients = ingredients
e.ForEach("div.text", func(_ int, el *colly.HTMLElement) {
instructions = append(instructions, el.ChildText("p.desc"))
})
recipe.Instructions = strings.Join(instructions, " ")
statsCollector.Visit(fmt.Sprintf("%s?=1", e.Request.URL.String()))
recipe.Stats = stats
stats = nil
_, insertErr := col.InsertOne(ctx, recipe)
if insertErr != nil {
fmt.Println("InsertOne ERROR:", insertErr)
os.Exit(1) // safely exit script on error
}
})
statsCollector.OnHTML("div[id = wrap]", func(e *colly.HTMLElement) {
e.ForEach("div[id = content] > div[id = recEntity] > .combocolumn > .stickbox > .maincolumn > div[id=recContent] > .stats > .bottom > ul > li", func(_ int, el *colly.HTMLElement) {
stats = append(stats, el.Text)
})
})
c.Visit("https://recepti.gotvach.bg/2000")
}