import create, { State } from 'zustand'
import produce from 'immer'
import { Market } from '@project-serum/serum'
import {
  IDS,
  MerpsClient as MangoClient,
  MerpsGroup as MangoGroup,
  MerpsAccount as MarginAccount,
} from '@blockworks-foundation/mango-client'
// import { SRM_DECIMALS } from '@project-serum/serum/lib/token-instructions'
import { AccountInfo, Connection, PublicKey } from '@solana/web3.js'
import { EndpointInfo, WalletAdapter } from '../@types/types'
import { getWalletTokenInfo } from '../utils/tokens'
// import { isDefined } from '../utils/index'
import { notify } from '../utils/notifications'

export const ENDPOINTS: EndpointInfo[] = [
  {
    name: 'mainnet-beta',
    url: 'https://mango.rpcpool.com/',
    websocket: 'https://mango.rpcpool.com/',
    custom: false,
  },
  {
    name: 'devnet',
    url: 'https://api.devnet.solana.com',
    websocket: 'https://api.devnet.solana.com',
    custom: false,
  },
]

type ClusterType = 'mainnet-beta' | 'devnet'

const CLUSTER = (process.env.NEXT_PUBLIC_CLUSTER as ClusterType) || 'devnet'
const ENDPOINT = ENDPOINTS.find((e) => e.name === CLUSTER)
const DEFAULT_CONNECTION = new Connection(ENDPOINT.url, 'recent')
const WEBSOCKET_CONNECTION = new Connection(ENDPOINT.websocket, 'recent')
const DEFAULT_MANGO_GROUP_NAME = 'merps_test_v1'

const defaultMangoGroupIds = IDS['groups'].find(
  (group) => group.name === DEFAULT_MANGO_GROUP_NAME
)

export const programId = new PublicKey(defaultMangoGroupIds.merps_program_id)
export const serumProgramId = new PublicKey(
  defaultMangoGroupIds.serum_program_id
)
const merpsGroupPk = new PublicKey(defaultMangoGroupIds.key)

export const INITIAL_STATE = {
  WALLET: {
    providerUrl: null,
    connected: false,
    current: null,
    balances: [],
    srmAccountsForOwner: [],
    contributedSrm: 0,
  },
}

// an object with keys of Solana account addresses that we are
// subscribing to with connection.onAccountChange() in the
// useHydrateStore hook
interface AccountInfoList {
  [key: string]: AccountInfo<Buffer>
}

interface MangoStore extends State {
  notifications: Array<{
    type: string
    message: string
    description?: string
    txid?: string
  }>
  accountInfos: AccountInfoList
  connection: {
    cluster: ClusterType
    current: Connection
    websocket: Connection
    endpoint: string
  }
  selectedMarket: {
    name: string
    address: string
    current: Market | null
    mangoProgramId: number | null
    markPrice: number
    orderBook: any[]
  }
  mangoClient: MangoClient
  mangoGroups: Array<MangoGroup>
  selectedMangoGroup: {
    name: string
    current: MangoGroup | null
    markets: {
      [address: string]: Market
    }
    ids: any
    tokens: any[]
  }
  marginAccounts: MarginAccount[]
  selectedMarginAccount: {
    current: MarginAccount | null
    initialLoad: boolean
  }
  tradeForm: {
    side: 'buy' | 'sell'
    price: number | ''
    baseSize: number | ''
    quoteSize: number | ''
    tradeType: 'Market' | 'Limit'
  }
  wallet: {
    providerUrl: string
    connected: boolean
    current: WalletAdapter | undefined
    balances: Array<{ account: any; publicKey: PublicKey }>
    srmAccountsForOwner: any[]
    contributedSrm: number
  }
  settings: {
    uiLocked: boolean
  }
  tradeHistory: any[]
  set: (x: any) => void
  actions: {
    [key: string]: () => void
  }
}

const useMangoStore = create<MangoStore>((set, get) => ({
  notifications: [],
  accountInfos: {},
  connection: {
    cluster: CLUSTER,
    current: DEFAULT_CONNECTION,
    websocket: WEBSOCKET_CONNECTION,
    endpoint: ENDPOINT.url,
  },
  selectedMangoGroup: {
    name: DEFAULT_MANGO_GROUP_NAME,
    current: null,
    markets: {},
    ids: defaultMangoGroupIds,
    tokens: defaultMangoGroupIds.tokens,
  },
  selectedMarket: {
    name: defaultMangoGroupIds.spot_markets[0].base_symbol,
    address: defaultMangoGroupIds.spot_markets[0].key,
    current: null,
    mangoProgramId: null,
    markPrice: 0,
    orderBook: [],
  },
  mangoClient: new MangoClient(DEFAULT_CONNECTION, programId),
  mangoGroups: [],
  marginAccounts: [],
  selectedMarginAccount: {
    current: null,
    initialLoad: false,
  },
  tradeForm: {
    side: 'buy',
    baseSize: '',
    quoteSize: '',
    tradeType: 'Limit',
    price: '',
  },
  wallet: INITIAL_STATE.WALLET,
  settings: {
    uiLocked: true,
  },
  tradeHistory: [],
  set: (fn) => set(produce(fn)),
  actions: {
    async fetchWalletBalances() {
      const connection = get().connection.current
      const wallet = get().wallet.current
      const connected = get().wallet.connected
      const set = get().set

      if (wallet?.publicKey && connected) {
        const ownerAddress = wallet.publicKey
        const ownedTokenAccounts = await getWalletTokenInfo(
          connection,
          ownerAddress
        )
        set((state) => {
          state.wallet.balances = ownedTokenAccounts
        })
      } else {
        set((state) => {
          state.wallet.balances = []
        })
      }
    },
    // async fetchMangoSrmAccounts() {
    //   const connection = get().connection.current
    //   const wallet = get().wallet.current
    //   const connected = get().wallet.connected
    //   const selectedMangoGroup = get().selectedMangoGroup.current
    //   const cluster = get().connection.cluster
    //   const mangoClient = get().mangoClient
    //   const set = get().set

    //   if (wallet?.publicKey && connected && selectedMangoGroup) {
    //     const usersMangoSrmAccounts =
    //       await mangoClient.getMangoSrmAccountsForOwner(
    //         connection,
    //         new PublicKey(IDS[cluster].mango_program_id),
    //         selectedMangoGroup,
    //         wallet
    //       )
    //     if (usersMangoSrmAccounts.length) {
    //       set((state) => {
    //         state.wallet.srmAccountsForOwner = usersMangoSrmAccounts
    //         const totalSrmDeposits = usersMangoSrmAccounts.reduce(
    //           (prev, cur) => prev + nativeToUi(cur.amount, SRM_DECIMALS),
    //           0
    //         )
    //         state.wallet.contributedSrm = totalSrmDeposits
    //       })
    //     }
    //   }
    // },
    // async fetchMarginAccounts() {
    //   const connection = get().connection.current
    //   const mangoGroup = get().selectedMangoGroup.current
    //   const selectedMarginAcount = get().selectedMarginAccount.current
    //   const wallet = get().wallet.current
    //   const cluster = get().connection.cluster
    //   const mangoClient = get().mangoClient
    //   const programId = IDS[cluster].mango_program_id
    //   const set = get().set

    //   if (!wallet?.publicKey || !wallet.publicKey) return

    //   if (!selectedMarginAcount) {
    //     set((state) => {
    //       state.selectedMarginAccount.initialLoad = true
    //     })
    //   }

    //   return mangoClient
    //     .getMarginAccountsForOwner(
    //       connection,
    //       new PublicKey(programId),
    //       mangoGroup,
    //       wallet
    //     )
    //     .then((marginAccounts) => {
    //       if (marginAccounts.length > 0) {
    //         const sortedAccounts = marginAccounts
    //           .slice()
    //           .sort(
    //             (a, b) =>
    //               (a.publicKey.toBase58() > b.publicKey.toBase58() && 1) || -1
    //           )
    //         set((state) => {
    //           state.marginAccounts = sortedAccounts
    //           if (state.selectedMarginAccount.current) {
    //             state.selectedMarginAccount.current = marginAccounts.find(
    //               (ma) =>
    //                 ma.publicKey.equals(
    //                   state.selectedMarginAccount.current.publicKey
    //                 )
    //             )
    //           } else {
    //             const lastAccount = localStorage.getItem('lastAccountViewed')

    //             state.selectedMarginAccount.current =
    //               marginAccounts.find(
    //                 (ma) => ma.publicKey.toString() === JSON.parse(lastAccount)
    //               ) || sortedAccounts[0]
    //           }
    //         })
    //       }
    //       set((state) => {
    //         state.selectedMarginAccount.initialLoad = false
    //       })
    //     })
    //     .catch((err) => {
    //       console.error('Could not get margin accounts for wallet', err)
    //     })
    // },
    async fetchMangoGroup() {
      const mangoClient = get().mangoClient
      const set = get().set

      if (!mangoClient) return

      const mangoGroupPk = merpsGroupPk

      return mangoClient
        .getMerpsGroup(mangoGroupPk)
        .then(async (mangoGroup) => {
          console.log('we have a mango group', mangoGroup)

          // const srmAccountInfoPromise = connection.getAccountInfo(
          //   mangoGroup.srmVault
          // )
          // const pricesPromise = mangoGroup.getPrices(connection)
          // const [srmAccountInfo, prices] = await Promise.all([
          //   srmAccountInfoPromise,
          //   pricesPromise,
          // ])
          // Set the mango group
          set((state) => {
            state.selectedMangoGroup.current = mangoGroup
            // state.selectedMangoGroup.srmAccount = srmAccountInfo
            // state.selectedMangoGroup.mintDecimals = mangoGroup.mintDecimals // TODO store "tokens" from merps group ids
            // state.selectedMangoGroup.prices = prices
          })
        })
        .catch((err) => {
          notify({
            message: 'Could not get mango group: ',
            description: `${err}`,
            type: 'error',
          })
          console.log('Could not get mango group: ', err)
        })
    },
    // async fetchTradeHistory(marginAccount = null) {
    //   const selectedMarginAccount =
    //     marginAccount || get().selectedMarginAccount.current
    //   const set = get().set

    //   if (!selectedMarginAccount) return
    //   if (selectedMarginAccount.openOrdersAccounts.length === 0) return

    //   const openOrdersAccounts =
    //     selectedMarginAccount.openOrdersAccounts.filter(isDefined)
    //   const publicKeys = openOrdersAccounts.map((act) =>
    //     act.publicKey.toString()
    //   )
    //   const results = await Promise.all(
    //     publicKeys.map(async (pk) => {
    //       const response = await fetch(
    //         `https://stark-fjord-45757.herokuapp.com/trades/open_orders/${pk.toString()}`
    //       )

    //       const parsedResponse = await response.json()
    //       return parsedResponse?.data ? parsedResponse.data : []
    //     })
    //   )
    //   set((state) => {
    //     state.tradeHistory = results
    //   })
    // },
  },
}))

export default useMangoStore