golang-fave/engine/actions/action_signin.go

package actions

import (
	"database/sql"
	_ "github.com/go-sql-driver/mysql"
)

func (this *Action) Action_signin() {
	if dbe := this.use_database(); dbe != nil {
		this.msg_error(dbe.Error())
		return
	} else {
		defer this.db.Close()
	}

	pf_email := this.wrapper.R.FormValue("email")
	pf_password := this.wrapper.R.FormValue("password")

	if pf_email == "" {
		this.msg_error(`Please specify user email`)
		return
	}

	if !this.is_valid_email(pf_email) {
		this.msg_error(`Please specify correct user email`)
		return
	}

	if pf_password == "" {
		this.msg_error(`Please specify user password`)
		return
	}

	if this.wrapper.Session.GetIntDef("UserId", 0) > 0 {
		this.msg_error(`You already logined`)
		return
	}

	var user_id int
	err := this.db.QueryRow(
		"SELECT `id` FROM `users` WHERE `email` = ? and `password` = MD5(?) LIMIT 1;",
		pf_email, pf_password).Scan(&user_id)

	if err != nil && err != sql.ErrNoRows {
		this.msg_error(err.Error())
		return
	}

	if err == sql.ErrNoRows {
		this.msg_error(`Incorrect email or password`)
		return
	}

	// Save to current session
	this.wrapper.Session.SetInt("UserId", user_id)

	// Reload current page
	this.write(`window.location.reload(false);`)
}