SuddenImpactRecords/Api/Auth/Login.go

package Auth

import (
	"encoding/json"
	"log"
	"net/http"
	"time"

	"git.tovijaeschke.xyz/tovi/SuddenImpactRecords/Database"
	"git.tovijaeschke.xyz/tovi/SuddenImpactRecords/Models"
	"git.tovijaeschke.xyz/tovi/SuddenImpactRecords/Util"

	"github.com/gofrs/uuid"
)

type Credentials struct {
	Email    string `json:"email"`
	Password string `json:"password"`
}

func Login(w http.ResponseWriter, r *http.Request) {
	var (
		creds        Credentials
		userData     Models.User
		sessionToken uuid.UUID
		expiresAt    time.Time
		returnJson   []byte
		err          error
	)

	err = json.NewDecoder(r.Body).Decode(&creds)
	if err != nil {
		w.WriteHeader(http.StatusBadRequest)
		return
	}

	userData, err = Database.GetUserByEmail(creds.Email)
	if err != nil {
		w.WriteHeader(http.StatusUnauthorized)
		return
	}

	if !CheckPasswordHash(creds.Password, userData.Password) {
		w.WriteHeader(http.StatusUnauthorized)
		return
	}

	sessionToken, err = uuid.NewV4()
	if err != nil {
		w.WriteHeader(http.StatusInternalServerError)
		return
	}

	expiresAt = time.Now().Add(1 * time.Hour)

	Sessions[sessionToken.String()] = Session{
		UserID: userData.ID.String(),
		Email:  userData.Email,
		Expiry: expiresAt,
	}

	http.SetCookie(w, &http.Cookie{
		Name:    "session_token",
		Value:   sessionToken.String(),
		Expires: expiresAt,
	})

	userData.Password = ""

	returnJson, err = json.MarshalIndent(userData, "", "  ")
	if err != nil {
		log.Printf("An error occured: %s\n", err.Error())
		Util.JsonReturn(w, 500, "An error occured")
		return
	}

	w.WriteHeader(http.StatusOK)
	w.Write(returnJson)
}