import fetch from "node-fetch";

// simply to allow for gql tag syntax highlighting
export function gql(strings: TemplateStringsArray) {
  return strings.join("");
}

export class Sonar {
  url: string;
  token: string;

  constructor(url: string, token: string) {
    this.url = url;
    this.token = token;
  }

  async request(query: string, variables: any = {}) {
    const resp = await fetch(this.url, {
      method: "POST",
      body: JSON.stringify({ query, variables }),
      headers: {
        "Content-Type": "application/json",
        Authorization: "Bearer " + this.token,
      },
    });
    if (!resp.ok) {
      throw new Error(
        `${resp.status} ${resp.statusText} ${JSON.stringify(await resp.json())}`
      );
    }
    const { data, errors } = await resp.json();
    if (errors) {
      throw new Error(errors[0].message);
    }
    return data;
  }

  async handlePagination(
    query: string,
    key: string,
    callback: (entities: any) => void | Promise<void>
  ) {
    let page = 1;
    let morePages = false;

    do {
      const response = await this.request(query, { page });
      const { entities, page_info } = response[key];
      morePages = page_info.total_pages > page;

      await callback(entities);

      page++;
    } while (morePages);
  }
}