se agregaron las funciones del CRUD

.gitignore

@@ -0,0 +1,2 @@
+*.mod
+*.sum

main.go

@@ -0,0 +1,81 @@
+package main
+
+import (
+	"database/sql"
+	"log"
+
+	"github.com/gofiber/fiber/v2"
+	"github.com/gofiber/fiber/v2/middleware/logger"
+	_ "github.com/mattn/go-sqlite3"
+)
+
+type Note struct{
+	ID int 'json:"id"'
+	Title string 'json:"title"'
+	Message string 'json:"message"'
+}
+
+func main(){
+	app:=fiber.New()
+	app.Use(logger.New())
+
+	db, err := sql.Open("sqlite3", "./notes.db")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer db.Close()
+
+	app.Get("/notes", func(c *fiber.Ctx) error{
+		rows, err := db.Query("SELECT id, title, message FROM notes")
+		if err != nil{
+			return c.Status(500).JSON(fiber.Map{"error": err.Error()})
+		}
+		defer rows.Close()
+
+		var notes []Note
+		for rows.Next() {
+			var note Note
+			if err := rows.Scan(&note.ID, &note.Title, &note.Message); err != nil{
+				return c.Status(500).JSON(fiber.Map("error": err.Error()))
+			}
+			notes = append(notes, note)
+		}
+		return c.JSON(notes)
+	})
+
+	app.Post("/notes", func(c *fiber.Ctx) error {
+		var newNote Note
+		if err := c.BodyParser(&newNote); err != nil {
+			return c.Status(400).JSON(fiber.Map{"error": err.Error()})
+		}
+		_, err := db.Exec("INSERT INTO  notes (title, message) VALUES (?, ?)", newNote,Title, newNote.Message)
+		if err != nil {
+			return c.Status(500).JSON(fiber.Map{"error": err.Error()})
+		}
+		return c.Status(201).SendString("nota creada exitosamente") 
+	})
+
+	app.Put("/notes/:id" func(c *fiber.Ctx) error{
+		id := c.Params("id")
+		var updateNote Note
+		if err := c.BodyParser(&updateNote); err != nil {
+			return c.Status(400).JSON(fiber.Map{"error": err.Error()})
+		}
+		_, err := db.Exec("UPDATE notes SET title = ?, message = ? WERE id = ?", updateNote.Title, updateNote.Message, id)
+		if err != nil {
+			return c.Status(500).JSON(fiber.Map{"error": err.Error()})
+		}
+		return c.SendString("Nota actualizada con exito") 
+	})
+
+	app.Delete("/notes/:id" func(c *fiber.Ctx) error{
+		id := c.Params("id")
+		_,err := db.Exec("DELETE FROM notes WHERE id = ?", id)
+		if err != nil{
+			return c.Status(500).JSON(fiber.Map["error": err.Error()])
+		}
+		return c.SendString("Nota borrada con exito")
+	})
+
+	log.Fatal(app.Listen(":8080"))
+}