import fs from "fs";
import { resolve } from "./path.js";

export type ChangeVersion = {
    version: string;
    title: string;
    body: Array<string>;
};

export function getChanges(): Array<ChangeVersion> {
    const changes: Array<ChangeVersion> = [
        { title: "", version: "null", body: [ ] }
    ];

    const content = fs.readFileSync(resolve("CHANGELOG.md")).toString();
    for (const line of content.split("\n")) {
        let match = line.match(/^ethers\/v(\S+)\s/);
        if (match) {
            changes.push({ version: match[1], title: line.trim(), body: [ ] });
        } else {
            const l = line.trim();
            if (l && !l.match(/^-+$/)) {
                changes[changes.length - 1].body.push(l);
            }
        }
    }

    changes.shift();

    return changes;
}