(function () {
  const apiBaseUrlStorageKey = "tarot-time-api-base-url";
  const apiKeyStorageKey = "tarot-time-api-key";
  const defaultApiBaseUrl = "";

  function normalizeBaseUrl(value) {
    return String(value || "")
      .trim()
      .replace(/\/+$/, "");
  }

  function normalizeApiKey(value) {
    return String(value || "").trim();
  }

  function normalizeConnectionSettings(settings) {
    return {
      apiBaseUrl: normalizeBaseUrl(settings?.apiBaseUrl),
      apiKey: normalizeApiKey(settings?.apiKey)
    };
  }

  function persistConnectionSettings(settings) {
    let didPersist = true;

    try {
      const params = new URLSearchParams(window.location.search || "");
      const queryValue = String(params.get("apiBaseUrl") || "").trim();
      const queryApiKey = String(params.get("apiKey") || params.get("api_key") || "").trim();

      if (queryValue) {
        window.localStorage.setItem(apiBaseUrlStorageKey, normalizeBaseUrl(queryValue));
      }

      if (queryApiKey) {
        window.localStorage.setItem(apiKeyStorageKey, normalizeApiKey(queryApiKey));
      }

      if (settings.apiBaseUrl) {
        window.localStorage.setItem(apiBaseUrlStorageKey, settings.apiBaseUrl);
      } else {
        window.localStorage.removeItem(apiBaseUrlStorageKey);
      }

      if (settings.apiKey) {
        window.localStorage.setItem(apiKeyStorageKey, settings.apiKey);
      } else {
        window.localStorage.removeItem(apiKeyStorageKey);
      }
    } catch (_error) {
      didPersist = false;
    }

    return didPersist;
  }

  function readConfiguredConnectionSettings() {
    try {
      const params = new URLSearchParams(window.location.search || "");
      const queryValue = String(params.get("apiBaseUrl") || "").trim();
      const queryApiKey = String(params.get("apiKey") || params.get("api_key") || "").trim();

      if (queryValue) {
        window.localStorage.setItem(apiBaseUrlStorageKey, normalizeBaseUrl(queryValue));
      }

      if (queryApiKey) {
        window.localStorage.setItem(apiKeyStorageKey, normalizeApiKey(queryApiKey));
      }

      const storedBaseUrl = String(window.localStorage.getItem(apiBaseUrlStorageKey) || "").trim();
      const storedApiKey = String(window.localStorage.getItem(apiKeyStorageKey) || "").trim();
      return normalizeConnectionSettings({
        apiBaseUrl: storedBaseUrl,
        apiKey: storedApiKey
      });
    } catch (_error) {
      return normalizeConnectionSettings({
        apiBaseUrl: "",
        apiKey: ""
      });
    }
  }

  const initialConnectionSettings = readConfiguredConnectionSettings();

  window.TarotAppConfig = {
    ...(window.TarotAppConfig || {}),
    apiBaseUrl: initialConnectionSettings.apiBaseUrl,
    apiKey: initialConnectionSettings.apiKey,
    getApiBaseUrl() {
      return normalizeBaseUrl(this.apiBaseUrl);
    },
    getApiKey() {
      return normalizeApiKey(this.apiKey);
    },
    isConnectionConfigured() {
      return Boolean(this.getApiBaseUrl());
    },
    getConnectionSettings() {
      return {
        apiBaseUrl: this.getApiBaseUrl(),
        apiKey: this.getApiKey()
      };
    },
    updateConnectionSettings(nextSettings = {}) {
      const previous = this.getConnectionSettings();
      const current = normalizeConnectionSettings({
        ...previous,
        ...nextSettings
      });
      const didPersist = persistConnectionSettings(current);

      this.apiBaseUrl = current.apiBaseUrl;
      this.apiKey = current.apiKey;

      if (previous.apiBaseUrl !== current.apiBaseUrl || previous.apiKey !== current.apiKey) {
        document.dispatchEvent(new CustomEvent("connection:updated", {
          detail: {
            previous,
            current: { ...current }
          }
        }));
      }

      return {
        ...current,
        didPersist
      };
    }
  };
})();