Rename -since to -days and add -token-file flag

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>

README.md

@@ -39,7 +39,7 @@ sudo mv $HOME/.arkade/bin/actions-usage /usr/local/bin/
 ## Output
 
 ```bash
-actions-usage --org openfaas --token $(cat ~/pat.txt) --days 28
+actions-usage --org openfaas --token-file ~/pat.txt --days 28
 
 Usage report generated by self-actuated/actions-usage.
 
@@ -59,7 +59,7 @@ Total usage: 8h24m21s (504 mins)
 As a user:
 
 ```bash
-actions-usage --user alexellis --token $(cat ~/pat.txt)
+actions-usage --user alexellis --token-file ~/pat.txt
 ```
 
 ## Development
@@ -70,7 +70,7 @@ All changes must be proposed with an Issue prior to working on them or sending a
 git clone https://github.com/actuated/actions-usage
 cd actions-usage
 
-go run . --org actuated-samples --token $(cat ~/pat.txt)
+go run . --org actuated-samples --token-file ~/pat.txt
 ```
 
 ## Author

main.go

@@ -19,19 +19,29 @@ import (
 func main() {
 
 	var (
-		orgName, userName, token string
-		since                    int
-		punchCard                bool
+		orgName, userName, token, tokenFile string
+		days                                int
+		punchCard                           bool
 	)
 
 	flag.StringVar(&orgName, "org", "", "Organization name")
 	flag.StringVar(&userName, "user", "", "User name")
 	flag.StringVar(&token, "token", "", "GitHub token")
+	flag.StringVar(&tokenFile, "token-file", "", "Path to the file containing the GitHub token")
+
 	flag.BoolVar(&punchCard, "punch-card", false, "Show punch card with breakdown of builds per day")
-	flag.IntVar(&since, "since", 30, "Since when to fetch the data (in days)")
+	flag.IntVar(&days, "days", 30, "How many days of data to query from the GitHub API")
 
 	flag.Parse()
 
+	if len(tokenFile) > 0 {
+		tokenBytes, err := os.ReadFile(tokenFile)
+		if err != nil {
+			log.Fatal(err)
+		}
+		token = strings.TrimSpace(string(tokenBytes))
+	}
+
 	auth := oauth2.NewClient(context.Background(), oauth2.StaticTokenSource(
 		&oauth2.Token{AccessToken: token},
 	))
@@ -44,7 +54,7 @@ func main() {
 	}
 
 	client := github.NewClient(auth)
-	created := time.Now().AddDate(0, 0, -since)
+	created := time.Now().AddDate(0, 0, -days)
 	format := "2006-01-02"
 	createdQuery := ">=" + created.Format(format)
 
@@ -77,7 +87,7 @@ func main() {
 		"skipped":   0,
 	}
 
-	fmt.Printf("Fetching last %d days of data (created>=%s)\n", since, created.Format("2006-01-02"))
+	fmt.Printf("Fetching last %d days of data (created>=%s)\n", days, created.Format("2006-01-02"))
 
 	var repos, allRepos []*github.Repository
 	var res *github.Response
@@ -243,8 +253,8 @@ func main() {
 		entity = userName
 	}
 
-	days := []string{"Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"}
-	fmt.Printf("\nGenerated by: https://github.com/self-actuated/actions-usage\nReport for %s - last: %d days.\n\n", entity, since)
+	daysOfWEek := []string{"Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"}
+	fmt.Printf("\nGenerated by: https://github.com/self-actuated/actions-usage\nReport for %s - last: %d days.\n\n", entity, days)
 	fmt.Printf("Total repos: %d\n", len(allRepos))
 	fmt.Printf("Total private repos: %d\n", totalPrivate)
 	fmt.Printf("Total public repos: %d\n", totalPublic)
@@ -271,7 +281,7 @@ func main() {
 		if punchCard {
 			w := tabwriter.NewWriter(os.Stdout, 15, 4, 1, ' ', tabwriter.TabIndent)
 			fmt.Fprintln(w, "Day\tBuilds")
-			for _, day := range days {
+			for _, day := range daysOfWEek {
 				fmt.Fprintf(w, "%s\t%d\n", day, buildsPerDay[day])
 			}
 			fmt.Fprintf(w, "%s\t%d\n", "Total", totalJobs)