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//! Search/sanitize helpers. AQL string functions live in `builtins/string.rs`.
use once_cell::sync::Lazy;
use regex::Regex;
use serde_json::Value;
use crate::error::{DbError, DbResult};
static HTML_TAG_REGEX: Lazy<Regex> = Lazy::new(|| Regex::new(r"<[^>]*>").unwrap());
static EMAIL_RE: Lazy<Regex> =
Lazy::new(|| Regex::new(r"^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$").unwrap());
static URL_RE: Lazy<Regex> = Lazy::new(|| Regex::new(r"^https?://[^\s/$.?#].[^\s]*$").unwrap());
static UUID_RE: Lazy<Regex> = Lazy::new(|| {
Regex::new(r"^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$")
.unwrap()
});
pub fn evaluate(name: &str, args: &[Value]) -> DbResult<Option<Value>> {
match name {
"HIGHLIGHT" => highlight(args),
"SLUGIFY" => {
if args.len() != 1 {
return Err(DbError::ExecutionError(
"SLUGIFY requires exactly 1 argument".to_string(),
));
}
match &args[0] {
Value::String(s) => Ok(Some(Value::String(slug::slugify(s)))),
Value::Null => Ok(Some(Value::Null)),
_ => Err(DbError::ExecutionError(
"SLUGIFY requires a string argument".to_string(),
)),
}
}
"SANITIZE" => sanitize(args),
"IS_EMAIL" => Ok(Some(Value::Bool(
args.first()
.and_then(Value::as_str)
.is_some_and(|s| EMAIL_RE.is_match(s)),
))),
"IS_URL" => Ok(Some(Value::Bool(
args.first()
.and_then(Value::as_str)
.is_some_and(|s| URL_RE.is_match(s)),
))),
"IS_UUID" => Ok(Some(Value::Bool(
args.first()
.and_then(Value::as_str)
.is_some_and(|s| UUID_RE.is_match(s)),
))),
"IS_BLANK" => Ok(Some(Value::Bool(match args.first() {
Some(Value::String(s)) => s.trim().is_empty(),
Some(Value::Null) | None => true,
_ => false,
}))),
_ => Ok(None),
}
}
fn highlight(args: &[Value]) -> DbResult<Option<Value>> {
if let Some(Value::String(text)) = args.first() {
let terms_arg = args.get(1);
let mut terms: Vec<String> = Vec::new();
match terms_arg {
Some(Value::String(s)) => terms.push(s.clone()),
Some(Value::Array(arr)) => {
for v in arr {
if let Value::String(s) = v {
terms.push(s.clone());
}
}
}
_ => {}
}
if terms.is_empty() {
return Ok(Some(Value::String(text.clone())));
}
terms.sort_by_key(|b| std::cmp::Reverse(b.len()));
let mut result = String::new();
let mut i = 0;
let text_chars: Vec<char> = text.chars().collect();
let terms_chars: Vec<Vec<char>> = terms
.iter()
.map(|t| t.to_lowercase().chars().collect())
.collect();
while i < text_chars.len() {
let mut matched = false;
for term_chars in &terms_chars {
if i + term_chars.len() <= text_chars.len() {
let slice = &text_chars[i..i + term_chars.len()];
if slice.iter().zip(term_chars.iter()).all(|(c1, c2)| {
c1.to_lowercase().next() == Some(*c2)
|| c1.to_lowercase().collect::<String>() == c2.to_string()
}) {
result.push_str("<b>");
for k in 0..term_chars.len() {
result.push(text_chars[i + k]);
}
result.push_str("</b>");
i += term_chars.len();
matched = true;
break;
}
}
}
if !matched {
result.push(text_chars[i]);
i += 1;
}
}
Ok(Some(Value::String(result)))
} else {
Ok(Some(Value::Null))
}
}
fn sanitize(args: &[Value]) -> DbResult<Option<Value>> {
if args.is_empty() || args.len() > 2 {
return Err(DbError::ExecutionError(
"SANITIZE requires 1 or 2 arguments (text, options?)".to_string(),
));
}
match &args[0] {
Value::String(s) => {
let mut result = s.clone();
let options: Vec<String> = if args.len() == 2 {
match &args[1] {
Value::String(opt) => vec![opt.to_lowercase()],
Value::Array(arr) => arr
.iter()
.filter_map(|v| v.as_str().map(|s| s.to_lowercase()))
.collect(),
_ => vec!["trim".to_string()],
}
} else {
vec!["trim".to_string()]
};
for opt in &options {
match opt.as_str() {
"trim" => result = result.trim().to_string(),
"lowercase" | "lower" => result = result.to_lowercase(),
"uppercase" | "upper" => result = result.to_uppercase(),
"alphanumeric" | "alnum" => {
result = result
.chars()
.filter(|c| c.is_alphanumeric() || c.is_whitespace())
.collect();
}
"alpha" => {
result = result
.chars()
.filter(|c| c.is_alphabetic() || c.is_whitespace())
.collect();
}
"numeric" | "digits" => {
result = result
.chars()
.filter(|c| c.is_numeric() || *c == '.' || *c == '-')
.collect();
}
"email" => {
result = result.trim().to_lowercase();
result = result
.chars()
.filter(|c| {
c.is_alphanumeric()
|| *c == '@'
|| *c == '.'
|| *c == '_'
|| *c == '-'
|| *c == '+'
})
.collect();
}
"url" => {
result = result.trim().to_string();
result = result
.chars()
.filter(|c| {
c.is_alphanumeric()
|| matches!(
*c,
'-' | '_'
| '.'
| '~'
| ':'
| '/'
| '?'
| '#'
| '['
| ']'
| '@'
| '!'
| '$'
| '&'
| '\''
| '('
| ')'
| '*'
| '+'
| ','
| ';'
| '='
| '%'
)
})
.collect();
}
"html" => {
result = result
.replace('&', "&")
.replace('<', "<")
.replace('>', ">")
.replace('"', """)
.replace('\'', "'");
}
"strip_html" => {
result = HTML_TAG_REGEX.replace_all(&result, "").to_string();
}
"normalize_whitespace" | "normalize" => {
let parts: Vec<&str> = result.split_whitespace().collect();
result = parts.join(" ");
}
_ => {}
}
}
Ok(Some(Value::String(result)))
}
Value::Null => Ok(Some(Value::Null)),
_ => Err(DbError::ExecutionError(
"SANITIZE requires a string argument".to_string(),
)),
}
}