i suck at golang

all.go

package main

// localhost:8080/create?first=myfirstname

import (
	"net/http"
	"fmt"
	)

// ----person----

type person struct {
	id uint64
	first string
	last string
}

// ----controller----

type controller struct {
	mapper mapper
}

func NewController(mapper mapper) controller {
	var controller controller
	controller.mapper = mapper
	return controller
}

func (c controller) create (w http.ResponseWriter, r *http.Request) {
	r.ParseForm()
	var person person
	person.first = fmt.Sprintf("%s", r.Form["first"])
	c.mapper.create(person)
}

func (c controller) read (w http.ResponseWriter, r *http.Request) {
}

func (c controller) update (w http.ResponseWriter, r *http.Request) {
	r.ParseForm()
	var person person
	c.mapper.update(person)
}

func (c controller) delete (w http.ResponseWriter, r *http.Request) {
}

func (c controller) list (w http.ResponseWriter, r *http.Request) {
}

// -----main-----

func main() {

	mapper := NewMapper("asdf")
	controller := NewController(mapper)

	// routing
	http.HandleFunc("/create", func(w http.ResponseWriter, r *http.Request) {
		controller.create(w,r)
	})
	http.HandleFunc("/read", func(w http.ResponseWriter, r *http.Request) {
		controller.read(w,r)
	})
	http.HandleFunc("/update", func(w http.ResponseWriter, r *http.Request) {
		controller.update(w,r)
	})
	http.HandleFunc("/delete", func(w http.ResponseWriter, r *http.Request) {
		controller.delete(w,r)
	})
	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		controller.list(w,r)
	})

	if err := http.ListenAndServe(":8080", nil); err != nil {
		panic(err)
	}
}

// ----mapper----


type mapper struct {
}

func NewMapper(dsn string) mapper {
	var mapper mapper
	return mapper
}

func (m mapper) create(person person) {
	fmt.Println("create")
	fmt.Printf("%+v\n", person)
}

func (m mapper) read(id uint64) {
	fmt.Println("read")
}

func (m mapper) update(person person) {
	fmt.Printf("%+v\n", person)
	fmt.Println("update")
}

func (m mapper) delete(id uint64) {
	fmt.Println("delete")
}

func (m mapper) list() {
	fmt.Println("list")
}