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import type { SerializedHTMLElement } from "../../scrape/types";
import { MarkdownElementType, type MarkdownElement } from "../types";
// --- Markdown Elements ---
/** Converts markdown element to a string with formatting */
export function stringifyMarkdownElement(elem: MarkdownElement): string {
const content = elem.content.trim();
if (elem.type === MarkdownElementType.Header) return `${"#".repeat(elem.level)} ${content}\n\n`;
if (elem.type === MarkdownElementType.BlockQuote) {
return `${"> ".repeat(elem.depth)}${content}\n\n`;
}
if (elem.type === MarkdownElementType.CodeBlock) return `\`\`\`\n${content}\n\`\`\`\n\n`;
if (elem.type === MarkdownElementType.UnorderedListItem) return `- ${content}\n`;
if (elem.type === MarkdownElementType.OrderedListItem) {
const siblings = elem.parent?.children ?? [elem];
const currentIndex = siblings.indexOf(elem);
const lastAdjacentIndex = siblings
.slice(currentIndex + 1)
.findLastIndex((child) => child.type === MarkdownElementType.OrderedListItem);
const order = currentIndex - lastAdjacentIndex + 1;
return `${order}. ${content}\n`;
}
return `${content}\n\n`;
}
/** Converts a tree of markdown elements to a string with formatting */
export function stringifyMarkdownElementTree(elem: MarkdownElement): string {
const stringified = stringifyMarkdownElement(elem);
if (!("children" in elem)) return stringified;
return stringified + elem.children.map(stringifyMarkdownElementTree).join("");
}
// ----- HTML Elements -----
/** Ignores all non-inline tag types and grabs their text. Converts inline tags to markdown */
export function stringifyHTMLElements(elems: (SerializedHTMLElement | string)[]): string {
return elems.map(stringifyHTMLElement).join("").trim();
}
/** Ignores all non-inline tag types and grabs their text. Converts inline tags to markdown */
export function stringifyHTMLElement(elem: SerializedHTMLElement | string): string {
if (typeof elem === "string") return elem;
if (elem.tagName === "br") return "\n";
const content = elem.content.map(stringifyHTMLElement).join("");
if (content.length === 0) return content;
if (elem.tagName === "strong" || elem.tagName === "b") return `**${content}**`;
if (elem.tagName === "em" || elem.tagName === "i") return `*${content}*`;
if (elem.tagName === "s" || elem.tagName === "strike") return `~~${content}~~`;
if (elem.tagName === "code" || elem.tagName === "var" || elem.tagName === "tt") {
return `\`${content}\``;
}
if (elem.tagName === "sup") return `<sup>${content}</sup>`;
if (elem.tagName === "sub") return `<sub>${content}</sub>`;
if (elem.tagName === "a" && content.trim().length > 0) {
const href = elem.attributes.href;
if (!href) return elem.content.map(stringifyHTMLElement).join("");
return `[${elem.content.map(stringifyHTMLElement).join("")}](${href})`;
}
return elem.content.map(stringifyHTMLElement).join("");
}
/** Grabs all text content directly, ignoring HTML tags */
export function stringifyHTMLElementsUnformatted(
elems: (SerializedHTMLElement | string)[]
): string {
return elems.map(stringifyHTMLElementUnformatted).join("");
}
/** Grabs all text content directly, ignoring HTML tags */
function stringifyHTMLElementUnformatted(elem: SerializedHTMLElement | string): string {
if (typeof elem === "string") return elem;
return elem.content.map(stringifyHTMLElementUnformatted).join("");
}
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