import type { PublisherLocalPlatformState, PublisherPluginPingResponse } from "@geo/shared-types";

import { getApiBaseURL, mediaApi } from "./api";
import {
  detectPublisherPlatforms,
  pingPublisherPlugin,
  registerPublisherInstallation,
} from "./publisher-plugin";

export interface PublisherRuntimeState {
  ping: PublisherPluginPingResponse;
  localPlatforms: PublisherLocalPlatformState[];
  pluginInstallationId: number | null;
}

function normalizePingResponse(ping: PublisherPluginPingResponse | null | undefined): PublisherPluginPingResponse {
  if (!ping || typeof ping.installed !== "boolean") {
    return {
      installed: false,
      capabilities: [],
    };
  }

  return {
    installed: ping.installed,
    version: ping.version,
    capabilities: Array.isArray(ping.capabilities) ? ping.capabilities : [],
    installation_key: ping.installation_key,
    plugin_installation_id: ping.plugin_installation_id ?? null,
  };
}

function detectBrowserName(): string {
  const ua = navigator.userAgent;
  if (/Edg\//.test(ua)) {
    return "Edge";
  }
  if (/Chrome\//.test(ua) && !/Edg\//.test(ua)) {
    return "Chrome";
  }
  if (/Firefox\//.test(ua)) {
    return "Firefox";
  }
  if (/Safari\//.test(ua) && !/Chrome\//.test(ua)) {
    return "Safari";
  }
  return navigator.platform || "Unknown";
}

export async function loadPublisherRuntimeState(): Promise<PublisherRuntimeState> {
  const ping = normalizePingResponse(await pingPublisherPlugin());
  if (!ping.installed || !ping.installation_key) {
    return {
      ping,
      localPlatforms: [],
      pluginInstallationId: null,
    };
  }

  const localPlatforms = await detectPublisherPlatforms();
  let pluginInstallationId = ping.plugin_installation_id ?? null;

  try {
    const registration = await mediaApi.registerPluginInstallation({
      installation_key: ping.installation_key,
      installation_name: "GEO Publisher",
      browser_name: detectBrowserName(),
      client_version: ping.version,
    });

    await registerPublisherInstallation({
      plugin_installation_id: registration.plugin_installation_id,
      installation_token: registration.installation_token,
      api_base_url: getApiBaseURL(),
    });

    pluginInstallationId = registration.plugin_installation_id;
  } catch (error) {
    console.error("publisher installation registration failed", error);
  }

  return {
    ping: {
      ...ping,
      plugin_installation_id: pluginInstallationId,
    },
    localPlatforms,
    pluginInstallationId,
  };
}