@use "sass:meta";
@use "sass:string";

$_kendo-svg-escaped-characters: (
    ("%", "%25"),
    ("<", "%3c"),
    (">", "%3e"),
    ("#", "%23"),
    ("(", "%28"),
    (")", "%29")
) !default;

$_kendo-escape-class-name: (
    ".": "\\.",
    "/": "\\/"
);

/// Returns the first index of `$substring` in `$string`, or `null` if `$string` doesn’t contain `$substring`.
/// @param {String} $string - The string to process.
/// @param {String} $substring - The substring to look for.
/// @return {Number} - The first index of `$substring` in `$string`, or `null` if `$string` doesn’t contain `$substring`.
///
/// @example scss - Usage
///   @debug k-string-index( "foo bar", "bar" ); // => 5
@function k-string-index( $string, $substring ) {
    @return string.index( $string, $substring );
}

/// Returns a copy of `$string` with `$insert` inserted at `$index`.
/// @param {String} $string - The string to process.
/// @param {String} $insert - The string to insert.
/// @param {Number} $index - The index at which to insert `$insert`.
/// @return {String} - The resulting string.
///
/// @example scss - Usage
///   @debug k-string-insert( "foo bar", "baz", 5 ); // => "foo baz bar"
@function k-string-insert( $string, $insert, $index ) {
    @return string.insert( $string, $insert, $index );
}

/// Returns the length of `$string`.
/// @param {String} $string - The string to process.
/// @return {Number} - The length of `$string`.
///
/// @example scss - Usage
///   @debug k-string-length( "foo bar" ); // => 7
@function k-string-length( $string ) {
    @return string.length( $string );
}

/// Returns a copy of `$string` with quotes added.
/// @param {String} $string - The string to process.
/// @return {String} - The resulting string.
///
/// @example scss - Usage
///   @debug k-string-quote( "foo bar" ); // => "foo bar"
@function k-string-quote( $string ) {
    @return string.quote( $string );
}

/// Returns a copy of `$string` with all occurrences of `$search`
/// replaced by `$replace`.
/// @param {String} $string - The string to process.
/// @param {String} $search - The substring to look for.
/// @param {String} $replace - The replacement string.
/// @return {String} - The resulting string.
///
/// @link https://www.sassmeister.com/gist/1b4f2da5527830088e4d
///
/// @example scss - Usage
///   @debug k-string-replace( "foo bar", "bar", "baz" ); // => "foo baz"
@function k-string-replace( $string, $search, $replace: "" ) {
    @if meta.type-of( $string ) == number {
        $string: $string + "";
    }

    $index: k-string-index( $string, $search );

    @if $index {
        @return k-string-slice( $string, 1, $index - 1 ) + $replace + k-string-replace( k-string-slice( $string, $index + k-string-length( $search ) ), $search, $replace );
    }

    @return $string;
}

/// Returns a substring of `$string` starting at `$start-at` and ending at `$end-at`.
/// @param {String} $string - The string to process.
/// @param {Number} $start-at - The index at which to start the substring.
/// @param {Number} $end-at - The index at which to end the substring.
/// @return {String} - The resulting string.
///
/// @example scss - Usage
///   @debug k-string-slice( "foo bar", 5 ); // => "bar"
@function k-string-slice( $string, $start-at, $end-at: -1 ) {
    @return string.slice( $string, $start-at, $end-at );
}

/// Returns a copy of `$string` with all uppercase letters converted to lowercase.
/// @param {String} $string - The string to process.
/// @return {String} - The resulting string.
///
/// @example scss - Usage
///   @debug k-string-to-lower-case( "FOO BAR" ); // => "foo bar"
@function k-string-to-lower-case( $string ) {
    @return string.to-lower-case( $string );
}

/// Returns a copy of `$string` with all lowercase letters converted to uppercase.
/// @param {String} $string - The string to process.
/// @return {String} - The resulting string.
///
/// @example scss - Usage
///   @debug k-string-to-upper-case( "foo bar" ); // => "FOO BAR"
@function k-string-to-upper-case( $string ) {
    @return string.to-upper-case( $string );
}

/// Returns a unique identifier.
/// @return {String} - The unique identifier.
///
/// @example scss - Usage
///   @debug k-string-unique-id(); // => UNIQUE_ID
@function k-string-unique-id() {
    @return string.unique-id();
}

/// Returns a copy of `$string` with quotes removed.
/// @param {String} $string - The string to process.
/// @return {String} - The resulting string.
///
/// @example scss - Usage
///   @debug k-string-unquote( "foo bar" ); // => foo bar
@function k-string-unquote( $string ) {
    @return string.unquote( $string );
}


// See https://www.sassmeister.com/gist/1b4f2da5527830088e4d
@function str-replace($string, $search, $replace: "") {
    $index: k-string-index($string, $search);

    @if $index {
        @return k-string-slice($string, 1, $index - 1) + $replace + str-replace(k-string-slice($string, $index + k-string-length($search)), $search, $replace);
    }

    @return $string;
}

// See https://codepen.io/kevinweber/pen/dXWoRw
@function k-escape-svg($string) {
    @if k-string-index($string, "data:image/svg+xml") {
        @each $char, $encoded in $_kendo-svg-escaped-characters {
            // Do not escape the url brackets
            @if k-string-index($string, "url(") == 1 {
                $string: url("#{k-string-replace(k-string-slice($string, 6, -3), $char, $encoded)}");
            } @else {
                $string: k-string-replace($string, $char, $encoded);
            }
        }
    }

    @return $string;
}

/// Escapes special characters in a class name
/// @param {String} $text - The string to escape
/// @return {String} - The escaped string
@function k-escape-class-name( $text ) {
    $_text: $text;

    @each $char, $rep in $_kendo-escape-class-name {
        $_text: k-string-replace( $_text, k-string-unquote( $char ), k-string-unquote( $rep ) );
    }

    @return $_text;
}