import { ClientApi } from '../client/api';
import { getClientConfig } from '../config/client';
import {
  FETCH_COMMIT_URL,
  FETCH_TAG_URL,
  ModelProvider,
  StoreKey,
} from '../constant';
import ChatGptIcon from '../icons/chatgpt.png';
import Locale from '../locales';
import { clientUpdate } from '../utils';
import { createPersistStore } from '../utils/store';

const ONE_MINUTE = 60 * 1000;
const isApp = !!getClientConfig()?.isApp;

function formatVersionDate(t: string) {
  const d = new Date(+t);
  const year = d.getUTCFullYear();
  const month = d.getUTCMonth() + 1;
  const day = d.getUTCDate();

  return [
    year.toString(),
    month.toString().padStart(2, '0'),
    day.toString().padStart(2, '0'),
  ].join('');
}

type VersionType = 'date' | 'tag';

async function getVersion(type: VersionType) {
  if (type === 'date') {
    const data = (await (await fetch(FETCH_COMMIT_URL)).json()) as {
      commit: {
        author: { name: string; date: string };
      };
      sha: string;
    }[];
    const remoteCommitTime = data[0].commit.author.date;
    const remoteId = new Date(remoteCommitTime).getTime().toString();
    return remoteId;
  } else if (type === 'tag') {
    const data = (await (await fetch(FETCH_TAG_URL)).json()) as {
      commit: { sha: string; url: string };
      name: string;
    }[];
    return data.at(0)?.name;
  }
}

export const useUpdateStore = createPersistStore(
  {
    versionType: 'tag' as VersionType,
    lastUpdate: 0,
    version: 'unknown',
    remoteVersion: '',
    used: 0,
    subscription: 0,

    lastUpdateUsage: 0,
  },
  (set, get) => ({
    formatVersion(version: string) {
      if (get().versionType === 'date') {
        version = formatVersionDate(version);
      }
      return version;
    },

    async getLatestVersion(force = false) {
      const versionType = get().versionType;
      const version
        = versionType === 'date'
          ? getClientConfig()?.commitDate
          : getClientConfig()?.version;

      set(() => ({ version }));

      const shouldCheck = Date.now() - get().lastUpdate > 2 * 60 * ONE_MINUTE;
      if (!force && !shouldCheck)
      { return; }

      set(() => ({
        lastUpdate: Date.now(),
      }));

      try {
        const remoteId = await getVersion(versionType);
        set(() => ({
          remoteVersion: remoteId,
        }));
        if (window.__TAURI__?.notification && isApp) {
          // Check if notification permission is granted
          await window.__TAURI__?.notification
            .isPermissionGranted()
            .then((granted: any) => {
              if (!granted) {

              } else {
                // Request permission to show notifications
                window.__TAURI__?.notification
                  .requestPermission()
                  .then((permission: any) => {
                    if (permission === 'granted') {
                      if (version === remoteId) {
                        // Show a notification using Tauri
                        window.__TAURI__?.notification.sendNotification({
                          title: 'NextChat',
                          body: `${Locale.Settings.Update.IsLatest}`,
                          icon: `${ChatGptIcon.src}`,
                          sound: 'Default',
                        });
                      } else {
                        const updateMessage
                          = Locale.Settings.Update.FoundUpdate(`${remoteId}`);
                        // Show a notification for the new version using Tauri
                        window.__TAURI__?.notification.sendNotification({
                          title: 'NextChat',
                          body: updateMessage,
                          icon: `${ChatGptIcon.src}`,
                          sound: 'Default',
                        });
                        clientUpdate();
                      }
                    }
                  });
              }
            });
        }
        console.log('[Got Upstream] ', remoteId);
      } catch (error) {
        console.error('[Fetch Upstream Commit Id]', error);
      }
    },

    async updateUsage(force = false) {
      // only support openai for now
      const overOneMinute = Date.now() - get().lastUpdateUsage >= ONE_MINUTE;
      if (!overOneMinute && !force)
      { return; }

      set(() => ({
        lastUpdateUsage: Date.now(),
      }));

      try {
        const api = new ClientApi(ModelProvider.GPT);
        const usage = await api.llm.usage();

        if (usage) {
          set(() => ({
            used: usage.used,
            subscription: usage.total,
          }));
        }
      } catch (e) {
        console.error((e as Error).message);
      }
    },
  }),
  {
    name: StoreKey.Update,
    version: 1,
  },
);