add backend supporting opengraph and comments

backend/main.go

@@ -0,0 +1,77 @@
+package main
+
+import (
+	"embed"
+	"git.sa.vin/any-remark/backend/datastore"
+	"git.sa.vin/any-remark/backend/server"
+	"github.com/gorilla/mux"
+	"github.com/payne8/go-libsql-dual-driver"
+	"github.com/rs/cors"
+	"log"
+	"net/http"
+	"os"
+)
+
+//go:embed migrations/*.sql
+var migrationFiles embed.FS
+
+func main() {
+	// create an http server for the following routes
+	// /api/v1/opengraph
+	// /x/:id -- short links
+	// /api/v1/shorten -- short link creation
+
+	logger := log.New(os.Stdout, "any-remark", log.LstdFlags)
+
+	primaryUrl := os.Getenv("LIBSQL_DATABASE_URL")
+	authToken := os.Getenv("LIBSQL_AUTH_TOKEN")
+
+	tdb, err := libsqldb.NewLibSqlDB(
+		primaryUrl,
+		libsqldb.WithMigrationFiles(migrationFiles),
+		libsqldb.WithAuthToken(authToken),
+		libsqldb.WithLocalDBName("local.db"), // will not be used for remote-only
+	)
+	if err != nil {
+		logger.Printf("failed to open db %s: %s", primaryUrl, err)
+		log.Fatalln(err)
+		return
+	}
+	err = tdb.Migrate()
+	if err != nil {
+		logger.Printf("failed to migrate db %s: %s", primaryUrl, err)
+		log.Fatalln(err)
+		return
+	}
+
+	mapper := datastore.NewMapper(tdb.DB)
+
+	s := server.NewServer(mapper)
+
+	r := mux.NewRouter()
+
+	// add allow cors middleware
+	//r.Use(server.CorsMiddleware)
+
+	r.HandleFunc("/api/v1/opengraph", s.OpenGraphHandler).Methods("GET")
+	r.HandleFunc("/api/v1/shorten", s.ShortenLinkHandler).Methods("POST")
+	r.HandleFunc("/api/v1/comments", s.ListComments).Methods("GET")
+	r.HandleFunc("/api/v1/comment", s.AddComment).Methods("POST")
+	r.HandleFunc("/x/{id}", s.ShortLinkHandler).Methods("GET")
+
+	c := cors.New(cors.Options{
+		AllowedOrigins:   []string{"http://localhost:5173"},
+		AllowCredentials: true,
+	})
+
+	handler := c.Handler(r)
+	//log.Fatal(http.ListenAndServe(":3000", handler)
+
+	http.Handle("/", handler)
+	err = http.ListenAndServe(":8080", nil)
+	if err != nil {
+		logger.Printf("server failed: %s", err)
+		log.Fatalln(err)
+		return
+	}
+}