import { BOLD_MAP, ITALIC_MAP, BOLD_ITALIC_MAP, UNICODE_TO_ASCII_MAP, UNICODE_TO_STYLE } from "./unicode-maps";

export type FormatStyle = "bold" | "italic" | "bold-italic";

const STYLE_MAPS: Record<FormatStyle, Record<string, string>> = {
    "bold": BOLD_MAP,
    "italic": ITALIC_MAP,
    "bold-italic": BOLD_ITALIC_MAP,
};

export function transformText(text: string, style: FormatStyle): string {
    const map = STYLE_MAPS[style];
    return [...text].map(ch => map[ch] ?? ch).join("");
}

export function cleanText(text: string): string {
    return text.split("\n").map(line => {
        if (line.startsWith("— ")) line = line.slice(2);
        else if (line.startsWith("→ ")) line = line.slice(2);

        line = line.replace(/^\(\d+\) /, "").replace(/^\d+\/ /, "");

        const output: string[] = [];
        let currentStyle: string | null = null;
        let buf: string[] = [];

        const flush = () => {
            if (buf.length === 0) return;
            const s = buf.join("");
            if (currentStyle === "bold") output.push(`**${s}**`);
            else if (currentStyle === "italic") output.push(`_${s}_`);
            else if (currentStyle === "bold-italic") output.push(`**_${s}_**`);
            else output.push(s);
            buf = [];
        };

        for (const ch of line) {
            const style = UNICODE_TO_STYLE.get(ch) ?? null;
            const ascii = UNICODE_TO_ASCII_MAP.get(ch) ?? ch;
            if (style !== currentStyle) { flush(); currentStyle = style; }
            buf.push(ascii);
        }
        flush();
        return output.join("");
    }).join("\n");
}

export function bulletToEmdash(text: string): string {
    return text.split("\n").map(line =>
        line.startsWith("* ") ? "— " + line.slice(2) : "— " + line
    ).join("\n");
}

export function bulletToArrow(text: string): string {
    return text.split("\n").map(line =>
        line.startsWith("* ") ? "→ " + line.slice(2) : "→ " + line
    ).join("\n");
}

export function numberedListSlash(text: string): string {
    let n = 0;
    return text.split("\n").map(line => {
        n++;
        const content = line.startsWith("* ") ? line.slice(2) : line;
        return `${n}/ ${content}`;
    }).join("\n");
}

export function numberedListParens(text: string): string {
    let n = 0;
    return text.split("\n").map(line => {
        n++;
        const content = line.startsWith("* ") ? line.slice(2) : line;
        return `(${n}) ${content}`;
    }).join("\n");
}

export { markdownToLinkedIn } from "./linkedin";