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export default class FormService {
getPasswordFields(rootNode = document) {
let fields;
try {
if(!rootNode || rootNode.querySelectorAll) rootNode = document;
fields = rootNode.querySelectorAll('input[type="password"]');
} catch(e) {
console.error(e);
return [];
}
let excludes = ['fake', 'hidden'],
passwordFields = [];
loop: for(let field of fields) {
let pl = field.placeholder.toLowerCase(),
name = field.name.toLowerCase(),
id = field.id.toLowerCase();
for(let exclude of excludes) {
if(name.indexOf(exclude) !== -1 || id.indexOf(exclude) !== -1 || pl.indexOf(exclude) !== -1) continue loop;
}
passwordFields.push(field);
}
return passwordFields;
}
/**
*
* @param {Node} el
* @return {(HTMLFormElement|void)}
*/
getParentForm(el) {
while(el.parentNode) {
if(el.parentNode.nodeName.toLowerCase() === 'form') {
return el.parentNode;
}
el = el.parentNode;
}
}
/**
*
* @param form
* @return {Boolean}
*/
checkIfFormVisible(form) {
let style = window.getComputedStyle(form);
return style.display !== 'none' && style.visibility !== 'hidden' && style.opacity !== '0';
}
/**
*
* @return {[]}
*/
getLoginFields() {
let fieldPairs = [],
passwords = this.getPasswordFields(),
i = passwords.length;
while(i--) {
let current = passwords[i],
form = this.getParentForm(current);
if(form && this.checkIfFormVisible(form)) {
let fields = form.querySelectorAll('input, button'),
lastUserGuess = null,
pair = {form: form, pass: current};
for(let i = 0; i < fields.length; i++) {
let field = fields[i];
if(field === current && lastUserGuess !== null) {
pair.firstGuess = lastUserGuess;
}
if(!this.isQualifiedField(field)) continue;
lastUserGuess = null;
if(!pair.user && this.isUserNameField(field)) {
pair.user = field;
} else if(field.type === 'text') {
if((field.autofocus || field.required)) {
if(!pair.firstGuess) {
pair.firstGuess = field;
} else {
lastUserGuess = field;
if(!pair.secondGuess) pair.secondGuess = field;
}
} else {
if(!pair.secondGuess) pair.secondGuess = field;
lastUserGuess = field;
}
} else if(!pair.submit && this.isSubmitButton(field)) {
pair.submit = field;
} else if(!pair.tel && field.type === 'tel') {
pair.tel = field;
} else if(!pair.email && field.type === 'email') {
pair.email = field;
} else if(!pair.remember && this.isRememberField(field)) {
pair.remember = field;
}
}
if(!pair.user && pair.email) pair.user = pair.email;
if(!pair.user && pair.tel) pair.user = pair.tel;
if(!pair.user && pair.firstGuess) pair.user = pair.firstGuess;
if(!pair.user && pair.secondGuess) pair.user = pair.secondGuess;
if(!pair.submit) {
pair.submit = form.querySelector('button[type="submit"]');
}
if(!pair.submit && form.id) {
let submit = document.querySelector(`button[form="${form.id}"][type=submit], input[form="${form.id}"][type=submit]`);
if(submit) pair.submit = submit;
}
pair.secure = form.method !== 'get';
fieldPairs.push(pair);
} else {
fieldPairs.push({secure: false, pass: current});
}
}
return fieldPairs;
}
/**
*
* @param {HTMLInputElement} field
* @return {Boolean}
*/
isQualifiedField(field) {
return !field.readOnly && !field.disabled && ['text', 'email', 'tel', 'submit', 'button', 'checkbox'].indexOf(field.type) !== -1;
}
/**
*
* @param {HTMLInputElement} field
* @return {Boolean}
*/
isUserNameField(field) {
if(['checkbox', 'submit', 'button'].indexOf(field.type) !== -1) return false;
if(field.type === 'email') return true;
let includes = ['user', 'login', 'email'],
excludes = ['fake', 'hidden'],
pl = field.placeholder.toLowerCase(),
name = field.name.toLowerCase(),
id = field.id.toLowerCase();
for(let exclude of excludes) {
if(name.indexOf(exclude) !== -1 || id.indexOf(exclude) !== -1 || pl.indexOf(exclude) !== -1) return false;
}
for(let include of includes) {
if(name.indexOf(include) !== -1 || id.indexOf(include) !== -1 || pl.indexOf(include) !== -1) return true;
}
return false;
}
/**
* @param {HTMLInputElement} field
* @return {Boolean}
*/
isRememberField(field) {
if(field.type !== 'checkbox') return false;
let includes = ['remember', 'autologin', 'permanent'],
name = field.name.toLowerCase(),
id = field.id.toLowerCase();
for(let include of includes) {
if(name.indexOf(include) !== -1 || id.indexOf(include) !== -1) return true;
}
return false;
}
/**
* @param {HTMLInputElement} field
* @return {Boolean}
*/
isSubmitButton(field) {
if(field.type === 'submit') return true;
if(field.type !== 'button') return false;
let includes = ['submit', 'login'],
name = field.name.toLowerCase(),
id = field.id.toLowerCase();
for(let include of includes) {
if(name.indexOf(include) !== -1 || id.indexOf(include) !== -1) return true;
}
return false;
}
}
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