package api

import (
	"log"

	lishwist "lishwist/core"
	"lishwist/http/templates"
)

type LoginProps struct {
	GeneralError           string `json:",omitempty"`
	SuccessfulRegistration bool   `json:",omitempty"`
	Username               templates.InputProps
	Password               templates.InputProps
}

func NewLoginProps(username, password string) *LoginProps {
	return &LoginProps{
		Username: templates.InputProps{
			Name:     "username",
			Required: true,
			Value:    username,
		},
		Password: templates.InputProps{
			Name:     "password",
			Type:     "password",
			Required: true,
			Value:    password,
		},
	}
}

func (p *LoginProps) Validate() (valid bool) {
	valid = true

	if !p.Username.Validate() {
		valid = false
	}

	if !p.Password.Validate() {
		valid = false
	}

	return
}

func Login(username, password string) *LoginProps {
	props := NewLoginProps(username, password)

	valid := props.Validate()
	props.Password.Value = ""
	if !valid {
		log.Printf("Invalid props: %#v\n", props)
		return props
	}

	_, err := lishwist.Login(props.Username.Value, props.Password.Value)
	if err == nil {
		return nil
	}

	switch err.(type) {
	case lishwist.ErrorInvalidCredentials:
		log.Printf("Invalid credentials: %w\n", err)
		props.GeneralError = "Username or password invalid"
		return props
	default:
		log.Printf("Login error: %w\n", err)
		props.GeneralError = "Something went wrong."
		return props
	}
}