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import { type Dict, isObject, walkObject } from "../utils"
import type { SystemContext } from "./types"
export function createSerializeFn(
options: Pick<SystemContext, "conditions" | "isValidProperty">,
) {
const { conditions, isValidProperty } = options
return function serialize(styles: Dict) {
return walkObject(styles, (value) => value, {
getKey: (prop, value) => {
if (!isObject(value)) return prop
if (!conditions.has(prop) && !isValidProperty(prop)) {
return parseSelectors(prop)
.map((s) => "&" + s)
.join(", ")
}
return prop
},
})
}
}
function parseSelectors(selector: string): string[] {
const result = [] as string[]
let parenCount = 0
let currentSelector = ""
let inEscape = false
for (let i = 0; i < selector.length; i++) {
const char = selector[i]
if (char === "\\" && !inEscape) {
inEscape = true
currentSelector += char
continue
}
if (inEscape) {
inEscape = false
currentSelector += char
continue
}
if (char === "(") {
parenCount++
} else if (char === ")") {
parenCount--
}
if (char === "," && parenCount === 0) {
result.push(currentSelector.trim())
currentSelector = ""
} else {
currentSelector += char
}
}
if (currentSelector) {
result.push(currentSelector.trim())
}
return result
}
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