159 lines
2.7 KiB
Go
159 lines
2.7 KiB
Go
package main
|
|
|
|
import (
|
|
"html/template"
|
|
"io"
|
|
"strconv"
|
|
"time"
|
|
|
|
"github.com/labstack/echo/v4"
|
|
"github.com/labstack/echo/v4/middleware"
|
|
)
|
|
|
|
type Templates struct {
|
|
templates *template.Template
|
|
}
|
|
|
|
func (t *Templates) Render(w io.Writer, name string, data interface{}, c echo.Context) error {
|
|
return t.templates.ExecuteTemplate(w, name, data)
|
|
}
|
|
|
|
func newTemplate() *Templates {
|
|
return &Templates{
|
|
templates: template.Must(template.ParseGlob("views/*.html")),
|
|
}
|
|
}
|
|
|
|
var id = 0
|
|
|
|
type Contact struct {
|
|
Name string
|
|
Email string
|
|
Id int
|
|
}
|
|
|
|
func newContact(name, email string) Contact {
|
|
id++
|
|
return Contact{
|
|
Name: name,
|
|
Email: email,
|
|
Id: id,
|
|
}
|
|
}
|
|
|
|
type Contacts = []Contact
|
|
|
|
type Data struct {
|
|
Contacts Contacts
|
|
}
|
|
|
|
func (d *Data) indexOf(id int) int {
|
|
for i, contact := range d.Contacts {
|
|
if contact.Id == id {
|
|
return i
|
|
}
|
|
}
|
|
return -1
|
|
}
|
|
|
|
func (d *Data) hasEmail(email string) bool {
|
|
for _, contact := range d.Contacts {
|
|
if contact.Email == email {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
func newData() Data {
|
|
return Data{
|
|
Contacts: []Contact{
|
|
newContact("John Smith", "johndoe@me.com"),
|
|
newContact("Jane Doe", "janedoe@me.com"),
|
|
},
|
|
}
|
|
}
|
|
|
|
type FormData struct {
|
|
Values map[string]string
|
|
Errors map[string]string
|
|
}
|
|
|
|
func newFormData() FormData {
|
|
return FormData{
|
|
Values: make(map[string]string),
|
|
Errors: make(map[string]string),
|
|
}
|
|
}
|
|
|
|
type Page struct {
|
|
Data Data
|
|
Form FormData
|
|
}
|
|
|
|
func newPage() Page {
|
|
return Page{
|
|
Data: newData(),
|
|
Form: newFormData(),
|
|
}
|
|
}
|
|
|
|
func main() {
|
|
|
|
e := echo.New()
|
|
e.Use(middleware.Logger())
|
|
|
|
page := newPage()
|
|
e.Renderer = newTemplate()
|
|
|
|
e.Static("/css", "css")
|
|
e.Static("/images", "images")
|
|
|
|
e.GET("/", func(c echo.Context) error {
|
|
return c.Render(200, "index", page)
|
|
})
|
|
|
|
e.POST("/contacts", func(c echo.Context) error {
|
|
name := c.FormValue("name")
|
|
email := c.FormValue("email")
|
|
|
|
if page.Data.hasEmail(email) {
|
|
formData := newFormData()
|
|
formData.Values["name"] = name
|
|
formData.Values["email"] = email
|
|
formData.Errors["email"] = "Email already exists"
|
|
|
|
return c.Render(422, "form", formData)
|
|
}
|
|
|
|
contact := newContact(name, email)
|
|
page.Data.Contacts = append(page.Data.Contacts, contact)
|
|
|
|
c.Render(200, "form", newFormData())
|
|
return c.Render(200, "oob-contact", contact)
|
|
})
|
|
|
|
e.DELETE("/contacts/:id", func(c echo.Context) error {
|
|
|
|
// TODO: remove this to make server faster LOL
|
|
time.Sleep(1 * time.Second)
|
|
|
|
idStr := c.Param("id")
|
|
id, err := strconv.Atoi(idStr)
|
|
if err != nil {
|
|
return c.String(400, "Invalid ID")
|
|
}
|
|
|
|
i := page.Data.indexOf(id)
|
|
if i == -1 {
|
|
return c.String(404, "Contact not found")
|
|
}
|
|
|
|
page.Data.Contacts = append(page.Data.Contacts[:i], page.Data.Contacts[i+1:]...)
|
|
return c.NoContent(200)
|
|
|
|
})
|
|
|
|
e.Logger.Fatal(e.Start(":1337"))
|
|
}
|