import type Database from "bun:sqlite";

import type { RuntimeMode } from "../../../shared/api";
import type { Logger } from "../../logger";

import { listConversations } from "../../db/conversations";
import { jsonResponse } from "../../helpers";
import { validateIdParam, validatePagination } from "../../middleware";

export function handleListConversations(req: Request, db: Database, mode: RuntimeMode, _logger: Logger): Response {
  const url = new URL(req.url);
  const projectId = url.pathname.split("/")[3];

  const validated = validateIdParam(projectId ?? "", mode);
  if (validated instanceof Response) return validated;

  const pageParam = url.searchParams.get("page");
  const pageSizeParam = url.searchParams.get("pageSize");

  const pagination = validatePagination(pageParam, pageSizeParam, mode);
  if (pagination instanceof Response) return pagination;

  const result = listConversations(db, validated.id, {
    page: pagination.page,
    pageSize: pagination.pageSize,
  });

  return jsonResponse(result, { mode });
}