Yii2: Customize login failure message with exact reason

I want to customize login failure message in Yii2. Right now, when I type wrong username or wrong password it will show same message for both.

Now i have one column in user table i.e. is_verified if user email is verified then I set value of this field to 1 else 0

If user register and doesn't verify his email the the value of is_verified=0

Now if user want to login then it showing that Incorrect username or password.

But i want to tell user that his email is not verified.

In LoginForm.php a function validatePassword will through this error

public function validatePassword($attribute, $params) {
        if (!$this->hasErrors()) {
            $user = $this->getUser();
            if (!$user || !$user->validatePassword($this->password)) {
                $this->addError($attribute, 'Incorrect username or password.');
            }
        }
    }

Please help in this or give any idea how can i override default login function

I am using yii2-basic-app

One more thing $user = $this->getUser(); this will return only those user whose status=10 by default i set user status=0 until he is not verify his email

what is want to do:

    if(username not exist in db){
        echo "username not found in db";
    }elseif(password not valid){
        echo "password not valid";
    }elseif(is_verified=0){
        echo "email not verified";
    }elseif(status = 0){
        echo "account is deactive";
    }

code from app\models\User.php

/**
     * @inheritdoc
     */
    public static function findIdentity($id) {
        return static::findOne(['id' => $id, 'status' => self::STATUS_ACTIVE]);
    }

    /**
     * @inheritdoc
     */
    public static function findIdentityByAccessToken($token, $type = null) {
        throw new NotSupportedException('"findIdentityByAccessToken" is not implemented.');
    }

    /**
     * Finds user by username
     *
     * @param string $username
     * @return static|null
     */
    public static function findByUsername($username) {
        return static::findOne(['email' => $username, 'status' => self::STATUS_ACTIVE]);
    }

    /**
     * Finds user by password reset token
     *
     * @param string $token password reset token
     * @return static|null
     */
    public static function findByPasswordResetToken($token) {
        if (!static::isPasswordResetTokenValid($token)) {
            return null;
        }

        return static::findOne([
            'password_reset_token' => $token,
            'status' => self::STATUS_ACTIVE,
        ]);
    }

    /**
     * Finds out if password reset token is valid
     *
     * @param string $token password reset token
     * @return boolean
     */
    public static function isPasswordResetTokenValid($token) {
        if (empty($token)) {
            return false;
        }
        $expire = Yii::$app->params['user.passwordResetTokenExpire'];
        $parts = explode('_', $token);
        $timestamp = (int) end($parts);
        return $timestamp + $expire >= time();
    }

    /**
     * @inheritdoc
     */
    public function getId() {
        return $this->getPrimaryKey();
    }

    /**
     * @inheritdoc
     */
    public function getAuthKey() {
        return $this->auth_key;
    }

    /**
     * @inheritdoc
     */
    public function validateAuthKey($authKey) {
        return $this->getAuthKey() === $authKey;
    }

    /**
     * Validates password
     *
     * @param string $password password to validate
     * @return boolean if password provided is valid for current user
     */
    public function validatePassword($password) {
        return Yii::$app->security->validatePassword($password, $this->password_hash);
    }

    /**
     * Generates password hash from password and sets it to the model
     *
     * @param string $password
     */
    public function setPassword($password) {
        $this->password_hash = Yii::$app->security->generatePasswordHash($password);
    }

    /**
     * Generates "remember me" authentication key
     */
    public function generateAuthKey() {
        $this->auth_key = Yii::$app->security->generateRandomString();
    }

    /**
     * Generates new password reset token
     */
    public function generatePasswordResetToken() {
        $this->password_reset_token = Yii::$app->security->generateRandomString() . '_' . time();
    }

    /**
     * Removes password reset token
     */
    public function removePasswordResetToken() {
        $this->password_reset_token = null;
    }

Code from app\models\LoginForm.php

/**
     * Validates the password.
     * This method serves as the inline validation for password.
     *
     * @param string $attribute the attribute currently being validated
     * @param array $params the additional name-value pairs given in the rule
     */
    public function validatePassword($attribute, $params) {
        if (!$this->hasErrors()) {
            $user = $this->getUser();
            if (!$user || !$user->validatePassword($this->password)) {
                $this->addError($attribute, 'Incorrect username or password.');
            }
        }
    }

    /**
     * Logs in a user using the provided username and password.
     *
     * @return boolean whether the user is logged in successfully
     */
    public function login() {
        if ($this->validate()) {
            return Yii::$app->user->login($this->getUser(), $this->rememberMe ? 3600 * 24 * 30 : 0);
        } else {
            return false;
        }
    }

    /**
     * Finds user by [[username]]
     *
     * @return User|null
     */
    public function getUser() {
        if ($this->_user === false) {
            $this->_user = User::findByusername($this->username);
        }

        return $this->_user;
    }

Thank You.

I have found the solution and now its working as I expected. All Credit goes to @scaisEdge. I get idea from his suggestions. Now i am posting actual code that works:

public function validatePassword($attribute, $params) {

    if (!$this->hasErrors()) {
        $user = $this->getUser();
        if (!$user) {
            $this->addError("username", 'Invalid username.');
            return;
        }
        if (!$user->validatePassword($this->password)) {
            $this->addError($attribute, 'Incorrect password.');
            return;
        }
        if (User::find()->where(['email' => $this->username])->andwhere(['verified' => 0])->one()) {

            $this->addError("username", 'email not varified ');
            return;
        }
        if (User::find()->where(['username' => $this->username])->andwhere(['status' => 0])->one()) {

            $this->addError($attribute, 'account is not active');
            return;
        }
    }
}

Thank You for all who answer and being kind to find out some time for me.

I posted this answer so someone else can get help from this.