"use strict";
Object.defineProperty(exports, "__esModule", {
    value: true
});
function _export(target, all) {
    for(var name in all)Object.defineProperty(target, name, {
        enumerable: true,
        get: all[name]
    });
}
_export(exports, {
    normalize: ()=>normalize,
    url: ()=>url,
    number: ()=>number,
    percentage: ()=>percentage,
    length: ()=>length,
    lineWidth: ()=>lineWidth,
    shadow: ()=>shadow,
    color: ()=>color,
    image: ()=>image,
    gradient: ()=>gradient,
    position: ()=>position,
    familyName: ()=>familyName,
    genericName: ()=>genericName,
    absoluteSize: ()=>absoluteSize,
    relativeSize: ()=>relativeSize
});
const _color = require("./color");
const _parseBoxShadowValue = require("./parseBoxShadowValue");
const _splitAtTopLevelOnly = require("./splitAtTopLevelOnly");
let cssFunctions = [
    "min",
    "max",
    "clamp",
    "calc"
];
// Ref: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Types
function isCSSFunction(value) {
    return cssFunctions.some((fn)=>new RegExp(`^${fn}\\(.*\\)`).test(value));
}
function normalize(value, isRoot = true) {
    // Keep raw strings if it starts with `url(`
    if (value.includes("url(")) {
        return value.split(/(url\(.*?\))/g).filter(Boolean).map((part)=>{
            if (/^url\(.*?\)$/.test(part)) {
                return part;
            }
            return normalize(part, false);
        }).join("");
    }
    // Convert `_` to ` `, except for escaped underscores `\_`
    value = value.replace(/([^\\])_+/g, (fullMatch, characterBefore)=>characterBefore + " ".repeat(fullMatch.length - 1)).replace(/^_/g, " ").replace(/\\_/g, "_");
    // Remove leftover whitespace
    if (isRoot) {
        value = value.trim();
    }
    // Add spaces around operators inside math functions like calc() that do not follow an operator
    // or '('.
    value = value.replace(/(calc|min|max|clamp)\(.+\)/g, (match)=>{
        return match.replace(/(-?\d*\.?\d(?!\b-.+[,)](?![^+\-/*])\D)(?:%|[a-z]+)?|\))([+\-/*])/g, "$1 $2 ");
    });
    return value;
}
function url(value) {
    return value.startsWith("url(");
}
function number(value) {
    return !isNaN(Number(value)) || isCSSFunction(value);
}
function percentage(value) {
    return value.endsWith("%") && number(value.slice(0, -1)) || isCSSFunction(value);
}
let lengthUnits = [
    "cm",
    "mm",
    "Q",
    "in",
    "pc",
    "pt",
    "px",
    "em",
    "ex",
    "ch",
    "rem",
    "lh",
    "vw",
    "vh",
    "vmin",
    "vmax"
];
let lengthUnitsPattern = `(?:${lengthUnits.join("|")})`;
function length(value) {
    return value === "0" || new RegExp(`^[+-]?[0-9]*\.?[0-9]+(?:[eE][+-]?[0-9]+)?${lengthUnitsPattern}$`).test(value) || isCSSFunction(value);
}
let lineWidths = new Set([
    "thin",
    "medium",
    "thick"
]);
function lineWidth(value) {
    return lineWidths.has(value);
}
function shadow(value) {
    let parsedShadows = (0, _parseBoxShadowValue.parseBoxShadowValue)(normalize(value));
    for (let parsedShadow of parsedShadows){
        if (!parsedShadow.valid) {
            return false;
        }
    }
    return true;
}
function color(value) {
    let colors = 0;
    let result = (0, _splitAtTopLevelOnly.splitAtTopLevelOnly)(value, "_").every((part)=>{
        part = normalize(part);
        if (part.startsWith("var(")) return true;
        if ((0, _color.parseColor)(part, {
            loose: true
        }) !== null) return colors++, true;
        return false;
    });
    if (!result) return false;
    return colors > 0;
}
function image(value) {
    let images = 0;
    let result = (0, _splitAtTopLevelOnly.splitAtTopLevelOnly)(value, ",").every((part)=>{
        part = normalize(part);
        if (part.startsWith("var(")) return true;
        if (url(part) || gradient(part) || [
            "element(",
            "image(",
            "cross-fade(",
            "image-set("
        ].some((fn)=>part.startsWith(fn))) {
            images++;
            return true;
        }
        return false;
    });
    if (!result) return false;
    return images > 0;
}
let gradientTypes = new Set([
    "linear-gradient",
    "radial-gradient",
    "repeating-linear-gradient",
    "repeating-radial-gradient",
    "conic-gradient"
]);
function gradient(value) {
    value = normalize(value);
    for (let type of gradientTypes){
        if (value.startsWith(`${type}(`)) {
            return true;
        }
    }
    return false;
}
let validPositions = new Set([
    "center",
    "top",
    "right",
    "bottom",
    "left"
]);
function position(value) {
    let positions = 0;
    let result = (0, _splitAtTopLevelOnly.splitAtTopLevelOnly)(value, "_").every((part)=>{
        part = normalize(part);
        if (part.startsWith("var(")) return true;
        if (validPositions.has(part) || length(part) || percentage(part)) {
            positions++;
            return true;
        }
        return false;
    });
    if (!result) return false;
    return positions > 0;
}
function familyName(value) {
    let fonts = 0;
    let result = (0, _splitAtTopLevelOnly.splitAtTopLevelOnly)(value, ",").every((part)=>{
        part = normalize(part);
        if (part.startsWith("var(")) return true;
        // If it contains spaces, then it should be quoted
        if (part.includes(" ")) {
            if (!/(['"])([^"']+)\1/g.test(part)) {
                return false;
            }
        }
        // If it starts with a number, it's invalid
        if (/^\d/g.test(part)) {
            return false;
        }
        fonts++;
        return true;
    });
    if (!result) return false;
    return fonts > 0;
}
let genericNames = new Set([
    "serif",
    "sans-serif",
    "monospace",
    "cursive",
    "fantasy",
    "system-ui",
    "ui-serif",
    "ui-sans-serif",
    "ui-monospace",
    "ui-rounded",
    "math",
    "emoji",
    "fangsong"
]);
function genericName(value) {
    return genericNames.has(value);
}
let absoluteSizes = new Set([
    "xx-small",
    "x-small",
    "small",
    "medium",
    "large",
    "x-large",
    "x-large",
    "xxx-large"
]);
function absoluteSize(value) {
    return absoluteSizes.has(value);
}
let relativeSizes = new Set([
    "larger",
    "smaller"
]);
function relativeSize(value) {
    return relativeSizes.has(value);
}
