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//! # Validating.
//!
//! Trait:
//! `Validation` - Validating Model fields for save and update.
//! Methods:
//! `check_minlength` - Validation of `minlength`.
//! `check_maxlength` - Validation of `maxlength`.
//! `accumula_err` - Accumulation of errors.
//! `regex_validation` - Validation in regular expression (email, password, etc...).
//! `check_unique` - Validation of `unique`.
//!
//! Trait:
//! `AdditionalValidation` - Methods for additional validation.
//! Methods:
//! `add_validation` - To create a custom validation.
//!
use crate::{
forms::Widget,
store::{REGEX_IS_COLOR_CODE, REGEX_IS_DATE, REGEX_IS_DATETIME, REGEX_IS_PASSWORD},
};
/// Validating Model fields for save and update.
// *************************************************************************************************
pub trait ValidationModel {
/// Validation of `minlength`.
// ---------------------------------------------------------------------------------------------
fn check_minlength(minlength: usize, value: &str) -> Result<(), Box<dyn std::error::Error>> {
if minlength > 0 && value.encode_utf16().count() < minlength {
Err(format!("Exceeds limit, minlength={}.", minlength))?
}
Ok(())
}
/// Validation of `maxlength`.
// ---------------------------------------------------------------------------------------------
fn check_maxlength(maxlength: usize, value: &str) -> Result<(), Box<dyn std::error::Error>> {
if maxlength > 0 && value.encode_utf16().count() > maxlength {
Err(format!("Exceeds limit, maxlength={}.", maxlength))?
}
Ok(())
}
/// Accumulation of errors.
// ---------------------------------------------------------------------------------------------
fn accumula_err(widget: &Widget, err: &String) -> Result<String, Box<dyn std::error::Error>> {
let mut tmp = widget.error.clone();
tmp = if !tmp.is_empty() {
format!("{}<br>", tmp)
} else {
String::new()
};
Ok(format!("{}{}", tmp, err))
}
/// Validation in regular expression (email, password, etc...).
// ---------------------------------------------------------------------------------------------
fn regex_validation(field_type: &str, value: &str) -> Result<(), Box<dyn std::error::Error>> {
match field_type {
"inputEmail" => {
if !validator::validate_email(value) {
Err("Invalid email address.")?
}
}
"inputColor" => {
if !REGEX_IS_COLOR_CODE.is_match(value) {
Err("Invalid Color code.")?
}
}
"inputUrl" => {
if !validator::validate_url(value) {
Err("Invalid Url.")?
}
}
"inputIP" => {
if !validator::validate_ip(value) {
Err("Invalid IP address.")?
}
}
"inputIPv4" => {
if !validator::validate_ip_v4(value) {
Err("Invalid IPv4 address.")?
}
}
"inputIPv6" => {
if !validator::validate_ip_v6(value) {
Err("Invalid IPv6 address.")?
}
}
"inputPassword" => {
if !REGEX_IS_PASSWORD.is_match(value) {
Err("Size 8-256 chars ; Allowed chars: a-z A-Z 0-9 @ # $ % ^ & + = * ! ~ ) (")?
}
}
"inputDate" => {
if !REGEX_IS_DATE.is_match(value) {
Err("Incorrect date format.<br>\
Example: 1970-02-28")?
}
}
"inputDateTime" => {
if !REGEX_IS_DATETIME.is_match(value) {
Err("Incorrect date and time format.<br>\
Example: 1970-02-28T00:00")?
}
}
_ => return Ok(()),
}
Ok(())
}
/// Validation of `unique`.
// ---------------------------------------------------------------------------------------------
fn check_unique(
hash: &str,
field_name: &str,
bson_field_value: &mongodb::bson::Bson,
coll: &mongodb::sync::Collection,
) -> Result<(), Box<dyn std::error::Error>> {
let object_id = mongodb::bson::oid::ObjectId::with_string(hash);
let mut filter = mongodb::bson::doc! { field_name: bson_field_value };
if let Ok(id) = object_id {
// If the document is will updated.
filter = mongodb::bson::doc! {
"$and": [
{ "_id": { "$ne": id } },
filter
]
};
}
let count: i64 = coll.count_documents(filter, None)?;
if count > 0 {
Err("Is not unique.")?
}
Ok(())
}
}
/// Methods for additional validation.
/// Hint: For custom use, add the Model/Form attribute `is_use_add_valid = true`.
/// Hint (for models): Remember to use for validate of ignored fields.
// *************************************************************************************************
///
/// # Example:
///
/// ```
/// impl AdditionalValidation for UserProfile {
/// fn add_validation<'a>(
/// &self,
/// ) -> Result<std::collections::HashMap<&'a str, &'a str>, Box<dyn std::error::Error>> {
/// // Hint: error_map.insert("field_name", "Error message.")
/// let mut error_map: std::collections::HashMap<&'a str, &'a str> =
/// std::collections::HashMap::new();
///
/// // Get clean data
/// let hash = self.hash.clone().unwrap_or_default();
/// let password = self.password.clone().unwrap_or_default();
/// let confirm_password = self.confirm_password.clone().unwrap_or_default();
/// let username = self.username.clone().unwrap_or_default();
///
/// // Fields validation
/// if hash.is_empty() && password != confirm_password {
/// error_map.insert("confirm_password", "Password confirmation does not match.");
/// }
/// if !RegexBuilder::new(r"^[a-z\d_@+.]+$")
/// .case_insensitive(true)
/// .build()
/// .unwrap()
/// .is_match(username.as_str())
/// {
/// error_map.insert(
/// "username",
/// "Invalid characters present.<br>\
/// Valid characters: a-z A-Z 0-9 _ @ + .",
/// );
/// }
///
/// Ok(error_map)
/// }
/// }
/// ```
///
pub trait AdditionalValidation {
// Default implementation as a stub.
fn add_validation<'a>(
&self,
) -> Result<std::collections::HashMap<&'a str, &'a str>, Box<dyn std::error::Error>> {
// error_map.insert("field_name", "Error message.")
let error_map: std::collections::HashMap<&'a str, &'a str> =
std::collections::HashMap::new();
Ok(error_map)
}
}