/
main.go
131 lines (110 loc) · 3.06 KB
/
main.go
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package main
import (
"encoding/json"
"github.com/gin-gonic/gin"
"godemo/controller"
"godemo/database"
"godemo/model"
"gopkg.in/bluesuncorp/validator.v5"
"io"
"net/http"
"os"
"unicode"
)
const defaultPort = "8080"
var (
msgInvalidJSON = "Invalid JSON format"
msgInvalidJSONType = func(e *json.UnmarshalTypeError) string {
return "Expected " + e.Value + " but given type is " + e.Type.String() + " in JSON"
}
msgValidationFailed = func(e *validator.FieldError) string {
switch e.Tag {
case "required":
return toSnakeCase(e.Field) + ": required"
case "max":
return toSnakeCase(e.Field) + ": too_long"
default:
return e.Error()
}
}
)
func main() {
migrate()
router := gin.Default()
router.Static("/css", "./assets/dist/css")
router.LoadHTMLGlob("templates/*")
router.GET("/ping", func(c *gin.Context) {
c.String(http.StatusOK, "pong")
})
router.GET("/", controller.Users.Top)
router.GET("/login", controller.Users.Login)
router.GET("/logout", controller.Users.Logout)
router.GET("/register", controller.Users.Register)
router.POST("/authenticate", controller.Users.Authenticate)
router.POST("/users/create", controller.Users.Create)
router.GET("/api/todos", apiHandle(), controller.Todos.List)
router.POST("/api/todos", apiHandle(), controller.Todos.Create)
http.ListenAndServe(":"+port(), router)
}
func apiHandle() gin.HandlerFunc {
return func(c *gin.Context) {
var user model.User
db := database.GetDB()
if err := db.Where("token = ?", c.Request.Header.Get("X-GODEMO-TOKEN")).Find(&user).Error; err != nil {
c.JSON(http.StatusBadRequest, gin.H{"errors": []string{"User not found"}})
c.Abort()
return
}
c.Set("user", user)
c.Next()
errs := make([]string, 0, len(c.Errors))
for _, e := range c.Errors {
// 1. エラーの種類で判定
switch e.Err {
case io.EOF:
errs = append(errs, msgInvalidJSON)
default:
// 2. エラーの型で判定
switch e.Err.(type) {
case *json.SyntaxError:
errs = append(errs, msgInvalidJSON)
case *json.UnmarshalTypeError:
errs = append(errs, msgInvalidJSONType(e.Err.(*json.UnmarshalTypeError)))
case *validator.StructErrors:
for _, fieldErr := range e.Err.(*validator.StructErrors).Flatten() {
errs = append(errs, msgValidationFailed(fieldErr))
}
default:
errs = append(errs, e.Error())
}
}
}
if len(c.Errors) > 0 {
c.JSON(-1, gin.H{"errors": errs}) // -1 == not override the current error code
}
}
}
// https://gist.github.com/elwinar/14e1e897fdbe4d3432e1
func toSnakeCase(in string) string {
runes := []rune(in)
length := len(runes)
var out []rune
for i := 0; i < length; i++ {
if i > 0 && unicode.IsUpper(runes[i]) && ((i+1 < length && unicode.IsLower(runes[i+1])) || unicode.IsLower(runes[i-1])) {
out = append(out, '_')
}
out = append(out, unicode.ToLower(runes[i]))
}
return string(out)
}
func port() string {
port := os.Getenv("PORT")
if len(port) == 0 {
port = defaultPort
}
return port
}
func migrate() {
db := database.GetDB()
db.AutoMigrate(&model.User{}, &model.Todo{})
}