Add scraping implementation (#4)

Issue: #2

Makefile

@@ -33,4 +33,4 @@ install: dep-ensure
 	@CGO_ENABLED=0 GOOS=linux GOARCH=amd64 $(GOCMD) build -a -installsuffix cgo -ldflags="-w -s" -o ./bin/$(PROJECT) ./src/$(PROJECT)
 
 run:
-	@GOPATH=$(GOPATH) $(GOCMD) run $(PROJECT_PATH)/main.go
+	@GOPATH=$(GOPATH) $(GOCMD) run $(PROJECT_PATH)/main.go $(WORD)

src/sinonimos/main.go

@@ -2,8 +2,13 @@ package main
 
 import (
 	"fmt"
+	"net/http"
 	"os"
 
+	"github.com/yhat/scrape"
+	"golang.org/x/net/html"
+	"golang.org/x/text/encoding/charmap"
+
 	cli "github.com/jawher/mow.cli"
 )
 
@@ -13,12 +18,49 @@ func main() {
 	app.Spec = "PALAVRA"
 
 	var (
-		word = app.StringsArg("PALAVRA", nil, "Palavra para encontrar sinônimos")
+		word = app.StringArg("PALAVRA", "", "Palavra para encontrar sinônimos")
 	)
 
 	app.Action = func() {
-		fmt.Printf("Buscando sinônimos para %s\n", *word)
+		fmt.Printf("Buscando sinônimos para \"%s\":\n", *word)
+		err := find(*word)
+		if err != nil {
+			fmt.Printf("... falhou (%s)\n", err.Error())
+		}
 	}
 
 	app.Run(os.Args)
 }
+
+func find(word string) error {
+	resp, err := http.Get(fmt.Sprintf("https://www.sinonimos.com.br/%s/", word))
+	if err != nil {
+		return err
+	}
+
+	body := charmap.ISO8859_1.NewDecoder().Reader(resp.Body)
+	root, err := html.Parse(body)
+	if err != nil {
+		return err
+	}
+
+	meaningSections := scrape.FindAll(root, scrape.ByClass("s-wrapper"))
+	for _, meaningSection := range meaningSections {
+		if meaning, ok := scrape.Find(meaningSection, scrape.ByClass("sentido")); ok {
+			fmt.Printf("\n> %s\n", scrape.Text(meaning))
+
+			synonyms := scrape.FindAll(meaningSection, scrape.ByClass("sinonimo"))
+			fmt.Print("  ")
+			for i, synonym := range synonyms {
+				fmt.Printf("%s", scrape.Text(synonym))
+				if i == (len(synonyms) - 1) {
+					fmt.Print("\n")
+				} else {
+					fmt.Print(", ")
+				}
+			}
+		}
+	}
+
+	return nil
+}