export { execute } from "./execute.js";
export { testEnvironment } from "./test.js";
export { parseCodexJsonl, isCodexUnknownSessionError } from "./parse.js";
import type { AdapterSessionCodec } from "@paperclip/adapter-utils";

function readNonEmptyString(value: unknown): string | null {
  return typeof value === "string" && value.trim().length > 0 ? value.trim() : null;
}

export const sessionCodec: AdapterSessionCodec = {
  deserialize(raw: unknown) {
    if (typeof raw !== "object" || raw === null || Array.isArray(raw)) return null;
    const record = raw as Record<string, unknown>;
    const sessionId = readNonEmptyString(record.sessionId) ?? readNonEmptyString(record.session_id);
    if (!sessionId) return null;
    const cwd =
      readNonEmptyString(record.cwd) ??
      readNonEmptyString(record.workdir) ??
      readNonEmptyString(record.folder);
    return cwd ? { sessionId, cwd } : { sessionId };
  },
  serialize(params: Record<string, unknown> | null) {
    if (!params) return null;
    const sessionId = readNonEmptyString(params.sessionId) ?? readNonEmptyString(params.session_id);
    if (!sessionId) return null;
    const cwd =
      readNonEmptyString(params.cwd) ??
      readNonEmptyString(params.workdir) ??
      readNonEmptyString(params.folder);
    return cwd ? { sessionId, cwd } : { sessionId };
  },
  getDisplayId(params: Record<string, unknown> | null) {
    if (!params) return null;
    return readNonEmptyString(params.sessionId) ?? readNonEmptyString(params.session_id);
  },
};