init draft

.gitignore

@@ -0,0 +1,26 @@
+
+# Created by https://www.toptal.com/developers/gitignore/api/go
+# Edit at https://www.toptal.com/developers/gitignore?templates=go
+
+### Go ###
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+### Go Patch ###
+/vendor/
+/Godeps/
+
+# End of https://www.toptal.com/developers/gitignore/api/go

cmd/twitterview/main.go

@@ -0,0 +1,37 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"time"
+
+	"github.com/azimut/cli-view/internal/twitter"
+)
+
+type options struct {
+	userAgent string
+	timeout   time.Duration
+	width     int
+}
+
+var opt options
+
+func init() {
+	flag.StringVar(&opt.userAgent, "A", "CliView/0.1", "default User-Agent sent")
+	flag.DurationVar(&opt.timeout, "t", time.Second*5, "timeout in seconds")
+	flag.IntVar(&opt.width, "w", 0, "fixed with, defaults to console width")
+}
+
+func usage() {
+	fmt.Printf("Usage: %s [OPTIONS] URL ...\n", os.Args[0])
+	flag.PrintDefaults()
+}
+
+func main() {
+	flag.Parse()
+	flag.Usage = usage
+	t := twitter.Tweet{}
+	t.GetHeader("what is this")
+	println("HELP ME")
+}

go.mod

@@ -0,0 +1,3 @@
+module github.com/azimut/cli-view
+
+go 1.14

internal/fetch/fetch.go

@@ -0,0 +1,53 @@
+package fetch
+
+import (
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"time"
+)
+
+func makeRequest(url, ua string) (*http.Request, error) {
+	req, err := http.NewRequest(http.MethodGet, url, nil)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("User-Agent", ua)
+	return req, nil
+}
+
+func getResponse(req *http.Request, timeout time.Duration) (*http.Response, error) {
+	client := &http.Client{Timeout: timeout}
+	resp, err := client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	return resp, nil
+}
+
+func handleResponse(resp *http.Response) (string, error) {
+	if resp.StatusCode != http.StatusOK {
+		return "", fmt.Errorf("invalid http status code %d", resp.StatusCode)
+	}
+	if b, err := ioutil.ReadAll(resp.Body); err == nil {
+		return string(b), nil
+	}
+	return "", fmt.Errorf("no body read")
+}
+
+func Fetch(url, ua string, timeout time.Duration) (string, error) {
+	request, err := makeRequest(url, ua)
+	if err != nil {
+		return "", err
+	}
+	response, err := getResponse(request, timeout)
+	if err != nil {
+		return "", err
+	}
+	body, err := handleResponse(response)
+	if err != nil {
+		return "", err
+	}
+	return body, nil
+}

internal/twitter/tweet.go

@@ -0,0 +1,8 @@
+package twitter
+
+type Tweet struct {
+}
+
+func (t Tweet) GetHeader(url string) {
+	println(url)
+}

internal/twitter/type.go

@@ -0,0 +1,15 @@
+package twitter
+
+type Embedded struct {
+	Url          string
+	AuthorName   string `json:"author_name"`
+	AuthorUrl    string `json:"author_url"`
+	Html         string
+	width        int
+	height       int
+	kind         string `json:"type"`
+	cacheAge     int    `json:cache_age`
+	providerName string `json:provider_name`
+	providerUrl  string `json:provider_url`
+	version      float32
+}