import { PublicKey, Connection } from "@solana/web3.js"
import BN from "bn.js" // eslint-disable-line @typescript-eslint/no-unused-vars
import * as borsh from "@coral-xyz/borsh" // eslint-disable-line @typescript-eslint/no-unused-vars
import * as types from "../types" // eslint-disable-line @typescript-eslint/no-unused-vars
import { PROGRAM_ID } from "../programId"

export interface TickArrayBitmapExtensionFields {
  poolId: PublicKey
  positiveTickArrayBitmap: Array<Array<BN>>
  negativeTickArrayBitmap: Array<Array<BN>>
}

export interface TickArrayBitmapExtensionJSON {
  poolId: string
  positiveTickArrayBitmap: Array<Array<string>>
  negativeTickArrayBitmap: Array<Array<string>>
}

export class TickArrayBitmapExtension {
  readonly poolId: PublicKey
  readonly positiveTickArrayBitmap: Array<Array<BN>>
  readonly negativeTickArrayBitmap: Array<Array<BN>>

  static readonly discriminator = Buffer.from([
    60, 150, 36, 219, 97, 128, 139, 153,
  ])

  static readonly layout = borsh.struct([
    borsh.publicKey("poolId"),
    borsh.array(borsh.array(borsh.u64(), 8), 14, "positiveTickArrayBitmap"),
    borsh.array(borsh.array(borsh.u64(), 8), 14, "negativeTickArrayBitmap"),
  ])

  constructor(fields: TickArrayBitmapExtensionFields) {
    this.poolId = fields.poolId
    this.positiveTickArrayBitmap = fields.positiveTickArrayBitmap
    this.negativeTickArrayBitmap = fields.negativeTickArrayBitmap
  }

  static async fetch(
    c: Connection,
    address: PublicKey,
    programId: PublicKey = PROGRAM_ID
  ): Promise<TickArrayBitmapExtension | null> {
    const info = await c.getAccountInfo(address)

    if (info === null) {
      return null
    }
    if (!info.owner.equals(programId)) {
      throw new Error("account doesn't belong to this program")
    }

    return this.decode(info.data)
  }

  static async fetchMultiple(
    c: Connection,
    addresses: PublicKey[],
    programId: PublicKey = PROGRAM_ID
  ): Promise<Array<TickArrayBitmapExtension | null>> {
    const infos = await c.getMultipleAccountsInfo(addresses)

    return infos.map((info) => {
      if (info === null) {
        return null
      }
      if (!info.owner.equals(programId)) {
        throw new Error("account doesn't belong to this program")
      }

      return this.decode(info.data)
    })
  }

  static decode(data: Buffer): TickArrayBitmapExtension {
    if (!data.slice(0, 8).equals(TickArrayBitmapExtension.discriminator)) {
      throw new Error("invalid account discriminator")
    }

    const dec = TickArrayBitmapExtension.layout.decode(data.slice(8))

    return new TickArrayBitmapExtension({
      poolId: dec.poolId,
      positiveTickArrayBitmap: dec.positiveTickArrayBitmap,
      negativeTickArrayBitmap: dec.negativeTickArrayBitmap,
    })
  }

  toJSON(): TickArrayBitmapExtensionJSON {
    return {
      poolId: this.poolId.toString(),
      positiveTickArrayBitmap: this.positiveTickArrayBitmap.map((item) =>
        item.map((item) => item.toString())
      ),
      negativeTickArrayBitmap: this.negativeTickArrayBitmap.map((item) =>
        item.map((item) => item.toString())
      ),
    }
  }

  static fromJSON(obj: TickArrayBitmapExtensionJSON): TickArrayBitmapExtension {
    return new TickArrayBitmapExtension({
      poolId: new PublicKey(obj.poolId),
      positiveTickArrayBitmap: obj.positiveTickArrayBitmap.map((item) =>
        item.map((item) => new BN(item))
      ),
      negativeTickArrayBitmap: obj.negativeTickArrayBitmap.map((item) =>
        item.map((item) => new BN(item))
      ),
    })
  }
}