validate github client input

go.mod

@@ -3,6 +3,7 @@ module github.com/theleeeo/docs-server
 go 1.21.3
 
 require (
+	github.com/fatih/color v1.16.0
 	github.com/gofiber/fiber/v2 v2.52.0
 	github.com/gofiber/template/html/v2 v2.1.0
 	github.com/google/go-github/v58 v58.0.0

go.sum

@@ -2,6 +2,8 @@ github.com/andybalholm/brotli v1.0.5 h1:8uQZIdzKmjc/iuPu7O2ioW48L81FgatrcpfFmiq/
 github.com/andybalholm/brotli v1.0.5/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/fatih/color v1.16.0 h1:zmkK9Ngbjj+K0yRhTVONQh1p/HknKYSlNT+vZCzyokM=
+github.com/fatih/color v1.16.0/go.mod h1:fL2Sau1YI5c0pdGEVCbKQbLXB6edEj1ZgiY4NijnWvE=
 github.com/gofiber/fiber/v2 v2.52.0 h1:S+qXi7y+/Pgvqq4DrSmREGiFwtB7Bu6+QFLuIHYw/UE=
 github.com/gofiber/fiber/v2 v2.52.0/go.mod h1:KEOE+cXMhXG0zHc9d8+E38hoX+ZN7bhOtgeF2oT6jrQ=
 github.com/gofiber/template v1.8.2 h1:PIv9s/7Uq6m+Fm2MDNd20pAFFKt5wWs7ZBd8iV9pWwk=

main.go

@@ -9,6 +9,7 @@ import (
 	"syscall"
 	"time"
 
+	"github.com/fatih/color"
 	"github.com/gofiber/fiber/v2"
 	"github.com/theleeeo/docs-server/app"
 	"github.com/theleeeo/docs-server/provider"
@@ -35,24 +36,31 @@ func main() {
 
 	cfg, err := loadConfig()
 	if err != nil {
-		panic(err)
+		color.Red("failed to load config: %s", err)
+		return
 	}
 
-	ghClient := provider.NewGithub(cfg.Provider.Github.Owner, cfg.Provider.Github.Repo, cfg.Provider.Github.Token)
+	ghClient, err := provider.NewGithub(cfg.Provider.Github.Owner, cfg.Provider.Github.Repo, cfg.Provider.Github.Token)
+	if err != nil {
+		color.Red("failed to create github provider: %s", err)
+		return
+	}
 
 	serverConfig := &server.Config{
 		PathPrefix: cfg.Server.PathPrefix,
 		FileSuffix: cfg.Server.FileSuffix,
 	}
 	interval, err := parseInterval(cfg.Server.PollInterval)
 	if err != nil {
-		panic(err)
+		color.Red("failed to parse poll interval: %s", err)
+		return
 	}
 	serverConfig.PollInterval = interval
 
 	s, err := server.New(serverConfig, ghClient)
 	if err != nil {
-		panic(err)
+		color.Red("failed to create server: %s", err)
+		return
 	}
 
 	app := app.New(&app.Config{

provider/github.go

@@ -2,6 +2,7 @@ package provider
 
 import (
 	"context"
+	"fmt"
 	"strings"
 
 	"github.com/google/go-github/v58/github"
@@ -14,18 +15,26 @@ type githubProvider struct {
 	client *github.Client
 }
 
-func NewGithub(owner, repo, token string) *githubProvider {
+func NewGithub(owner, repo, token string) (*githubProvider, error) {
 	cl := github.NewClient(nil)
 	if token != "" {
 		cl = cl.WithAuthToken(token)
 	}
 
+	if owner == "" {
+		return nil, fmt.Errorf("owner cannot be empty")
+	}
+
+	if repo == "" {
+		return nil, fmt.Errorf("repo cannot be empty")
+	}
+
 	return &githubProvider{
 		owner:  owner,
 		repo:   repo,
 		token:  token,
 		client: cl,
-	}
+	}, nil
 }
 
 // Get the names of all tags in the repository