// retoor <retoor@molodetz.nl>
export class Http {
  static termsGate = null;

  static suspend() {
    return new Promise(() => {});
  }

  static async getJson(url) {
    const response = await fetch(url, { headers: { Accept: "application/json" }, credentials: "same-origin" });
    if (!response.ok) {
      throw new Error(`${response.status} ${response.statusText}`);
    }
    return response.json();
  }

  static async #post(url, body, headers) {
    const response = await fetch(url, {
      method: "POST",
      body,
      credentials: "same-origin",
      headers: { Accept: "application/json", ...headers },
    });
    if (response.status === 403 && Http.termsGate) {
      const handled = await Http.termsGate.intercept(response.clone());
      if (handled) {
        return Http.#post(url, body, headers);
      }
    }
    if (response.redirected && response.url.includes("/auth/login")) {
      window.location.href = response.url;
      return Http.suspend();
    }
    return response;
  }

  static async send(url, data = {}) {
    const response = await Http.#post(url, JSON.stringify(data), { "Content-Type": "application/json" });
    const payload = await response.json().catch(() => ({}));
    if (!response.ok || payload.ok === false) {
      const message = payload.error?.message || (payload.messages || []).join(", ") || response.statusText;
      throw new Error(message);
    }
    return payload;
  }

  static async sendForm(url, form) {
    const body = new URLSearchParams(new FormData(form));
    const response = await Http.#post(url, body, { "Content-Type": "application/x-www-form-urlencoded" });
    if (!response.ok) {
      const payload = await response.json().catch(() => ({}));
      throw new Error(`${response.status} ${payload.error?.message || (payload.messages || []).join(", ") || ""}`.trim());
    }
    return response.json().catch(() => ({ ok: true }));
  }

  static postJson(url, data) {
    return Http.send(url, data);
  }

  static postForm(url, form) {
    return Http.sendForm(url, form);
  }

  static async sendDelete(url) {
    const response = await fetch(url, { method: "DELETE", credentials: "same-origin", headers: { Accept: "application/json" } });
    if (!response.ok) {
      throw new Error(`${response.status}`);
    }
    return response.json().catch(() => ({ ok: true }));
  }
}