/*
  Integration tests for the bchjs. Only covers calls made to
  rest.bitcoin.com.

  TODO
  - getMempoolEntry() only works on TXs in the mempool, so it needs to be part
  of an e2e test to be properly tested.
*/

const chai = require("chai")
const assert = chai.assert

const RESTURL = process.env.RESTURL
  ? process.env.RESTURL
  : `https://tapi.fullstack.cash/v3/`
// if (process.env.RESTURL) RESTURL = process.env.RESTURL

const BCHJS = require("../../../src/bch-js")
// const bchjs = new BCHJS({ restURL: `https://testnet.bchjs.cash/v3/` })
const bchjs = new BCHJS({ restURL: RESTURL, apiToken: process.env.BCHJSTOKEN })

// Inspect utility used for debugging.
const util = require("util")
util.inspect.defaultOptions = {
  showHidden: true,
  colors: true,
  depth: 3
}

describe(`#blockchain`, () => {
  describe(`#getBestBlockHash`, () => {
    it(`should GET best block hash`, async () => {
      const result = await bchjs.Blockchain.getBestBlockHash()
      //console.log(`result: ${util.inspect(result)}`)

      assert.isString(result)
      assert.equal(result.length, 64, "Specific hash length")
    })
  })

  describe("#getBlockHeader", () => {
    it(`should GET block header for a single hash`, async () => {
      const hash =
        "000000000000c57178ace90210289e6b5383134c5b5306e1cdd8395176e10aaf"

      const result = await bchjs.Blockchain.getBlockHeader(hash)

      assert.hasAllKeys(result, [
        "hash",
        "confirmations",
        "height",
        "version",
        "versionHex",
        "merkleroot",
        "time",
        "mediantime",
        "nonce",
        "bits",
        "difficulty",
        "chainwork",
        "previousblockhash",
        "nextblockhash",
        "nTx"
      ])
    })

    it(`should GET block headers for an array of hashes`, async () => {
      const hash = [
        "000000000000c57178ace90210289e6b5383134c5b5306e1cdd8395176e10aaf",
        "00000000000b7db4cbae48d852fcbef32f728014582094ad613fe12af6600ff2"
      ]

      const result = await bchjs.Blockchain.getBlockHeader(hash)

      assert.isArray(result)
      assert.hasAllKeys(result[0], [
        "hash",
        "confirmations",
        "height",
        "version",
        "versionHex",
        "merkleroot",
        "time",
        "mediantime",
        "nonce",
        "bits",
        "difficulty",
        "chainwork",
        "previousblockhash",
        "nextblockhash",
        "nTx"
      ])
    })

    it(`should throw an error for improper input`, async () => {
      try {
        const hash = 12345

        await bchjs.Blockchain.getBlockHeader(hash)
        assert.equal(true, false, "Unexpected result!")
      } catch (err) {
        assert.include(
          err.message,
          `Input hash must be a string or array of strings`
        )
      }
    })

    it(`should throw error on array size rate limit`, async () => {
      try {
        const data = []
        for (let i = 0; i < 25; i++) {
          data.push(
            "00000000000b7db4cbae48d852fcbef32f728014582094ad613fe12af6600ff2"
          )
        }

        const result = await bchjs.Blockchain.getBlockHeader(data)

        // console.log(`result: ${util.inspect(result)}`)
        assert.equal(true, false, "Unexpected result!")
      } catch (err) {
        assert.hasAnyKeys(err, ["error"])
        assert.include(err.error, "Array too large")
      }
    })
  })

  describe("#getMempoolEntry", () => {
    /*
    // To run this test, the txid must be unconfirmed.
    const txid =
      "defea04c38ee00cf73ad402984714ed22dc0dd99b2ae5cb50d791d94343ba79b"

    it(`should GET single mempool entry`, async () => {
      const result = await bchjs.Blockchain.getMempoolEntry(txid)
      //console.log(`result: ${JSON.stringify(result, null, 2)}`)

      assert.hasAnyKeys(result, [
        "size",
        "fee",
        "modifiedfee",
        "time",
        "height",
        "startingpriority",
        "currentpriority",
        "descendantcount",
        "descendantsize",
        "descendantfees",
        "ancestorcount",
        "ancestorsize",
        "ancestorfees",
        "depends"
      ])
    })

    it(`should get an array of mempool entries`, async () => {
      const result = await bchjs.Blockchain.getMempoolEntry([txid, txid])
      console.log(`result: ${JSON.stringify(result, null, 2)}`)

      assert.isArray(result)
      assert.hasAnyKeys(result[0], [
        "size",
        "fee",
        "modifiedfee",
        "time",
        "height",
        "startingpriority",
        "currentpriority",
        "descendantcount",
        "descendantsize",
        "descendantfees",
        "ancestorcount",
        "ancestorsize",
        "ancestorfees",
        "depends"
      ])
    })
    */

    it(`should throw an error if txid is not in mempool`, async () => {
      try {
        const txid =
          "1f121fb6a33f48cd426dde06aa20ce589dd97becabb835a8d33071cbf40c7d04"

        await bchjs.Blockchain.getMempoolEntry(txid)

        assert.equal(true, false, "Unexpected result!")
      } catch (err) {
        //console.log(`err: ${util.inspect(err)}`)
        assert.hasAnyKeys(err, ["error"])
        assert.include(err.error, `Transaction not in mempool`)
      }
    })

    it(`should throw an error for improper single input`, async () => {
      try {
        const txid = 12345

        await bchjs.Blockchain.getMempoolEntry(txid)
        assert.equal(true, false, "Unexpected result!")
      } catch (err) {
        assert.include(
          err.message,
          `Input must be a string or array of strings`
        )
      }
    })
  })

  describe(`#getTxOutProof`, () => {
    it(`should get single tx out proof`, async () => {
      const txid =
        "1f121fb6a33f48cd426dde06aa20ce589dd97becabb835a8d33071cbf40c7d04"

      const result = await bchjs.Blockchain.getTxOutProof(txid)
      //console.log(`result: ${JSON.stringify(result, null, 2)}`)

      assert.isString(result)
    })

    it(`should get an array of tx out proofs`, async () => {
      const txid = [
        "1f121fb6a33f48cd426dde06aa20ce589dd97becabb835a8d33071cbf40c7d04",
        "fc4f696c0ebb3d0994b3975f57d85be75ef752b9fd52c17e361ec3be2fa3e752"
      ]

      const result = await bchjs.Blockchain.getTxOutProof(txid)
      // console.log(`result: ${JSON.stringify(result, null, 2)}`)

      assert.isArray(result)
      assert.isString(result[0])
    })

    it(`should throw an error for improper single input`, async () => {
      try {
        const txid = 12345

        await bchjs.Blockchain.getTxOutProof(txid)
        assert.equal(true, false, "Unexpected result!")
      } catch (err) {
        assert.include(
          err.message,
          `Input must be a string or array of strings`
        )
      }
    })
  })

  describe(`#verifyTxOutProof`, () => {
    const mockTxOutProof =
      "00000020ac86ce8f2bda235c0dc135d18f6a777c44b121e8f41db8a51ca65000000000000cd4de3c49337712f3a1092c47c3bf73ec2f9b1cfd289ee991ede0b6eab4df229d5b8c5dffff001d82ce005b0700000003ec55d9142eac2c1d2229e5af24898b2590c111b62e2787fa1998d3d713fd432fd557124ed758fa156a6cdc6d317d5575aec2b86dfb159c62ecb4743f28bef1cb52e7a32fbec31e367ec152fdb952f75ee75bd8575f97b394093dbb0e6c694ffc0135"

    it(`should verify a single proof`, async () => {
      const result = await bchjs.Blockchain.verifyTxOutProof(mockTxOutProof)
      // console.log(`result: ${JSON.stringify(result, null, 2)}`)

      assert.isArray(result)
      assert.isString(result[0])
      assert.equal(
        result[0],
        "fc4f696c0ebb3d0994b3975f57d85be75ef752b9fd52c17e361ec3be2fa3e752"
      )
    })

    it(`should verify an array of proofs`, async () => {
      const proofs = [mockTxOutProof, mockTxOutProof]
      const result = await bchjs.Blockchain.verifyTxOutProof(proofs)
      //console.log(`result: ${JSON.stringify(result, null, 2)}`)

      assert.isArray(result)
      assert.isString(result[0])
      assert.equal(
        result[0],
        "fc4f696c0ebb3d0994b3975f57d85be75ef752b9fd52c17e361ec3be2fa3e752"
      )
    })

    it(`should throw an error for improper single input`, async () => {
      try {
        const txid = 12345

        await bchjs.Blockchain.verifyTxOutProof(txid)
        assert.equal(true, false, "Unexpected result!")
      } catch (err) {
        assert.include(
          err.message,
          `Input must be a string or array of strings`
        )
      }
    })

    it(`should throw error on array size rate limit`, async () => {
      try {
        const data = []
        for (let i = 0; i < 25; i++) data.push(mockTxOutProof)

        const result = await bchjs.Blockchain.verifyTxOutProof(data)

        console.log(`result: ${util.inspect(result)}`)
        assert.equal(true, false, "Unexpected result!")
      } catch (err) {
        assert.hasAnyKeys(err, ["error"])
        assert.include(err.error, "Array too large")
      }
    })
  })
})