import {assert} from 'chai'
import fs from 'fs'

import {ABI, Blob, Name, Serializer, UInt128, UInt64} from '@wharfkit/antelope'
import {
    abiToBlob,
    blobStringToAbi,
    capitalize,
    indexPositionInWords,
    pascalCase,
    singularize,
    wrapIndexValue,
} from '@wharfkit/contract'

suite('Utility functions', function () {
    test('Converts to pascal case', function () {
        assert.equal(pascalCase('hello_world'), 'HelloWorld')
    })

    test('Capitalizes string', function () {
        assert.equal(capitalize('hello'), 'Hello')
        assert.equal(capitalize(''), '')
    })

    test('Singularizes word', function () {
        assert.equal(singularize('bodies'), 'body')
        assert.equal(singularize('watches'), 'watch')
        assert.equal(singularize('buses'), 'bus')
        assert.equal(singularize('cats'), 'cat')
    })

    test('Gets index position in words', function () {
        assert.equal(indexPositionInWords(0), 'primary')
        assert.equal(indexPositionInWords(1), 'secondary')
    })

    test('Wraps index value', function () {
        assert.isUndefined(wrapIndexValue(undefined))
        assert.deepEqual(wrapIndexValue(UInt128.from('10')), UInt128.from('10'))
        assert.deepEqual(wrapIndexValue(UInt64.from('10')), UInt64.from('10'))
        assert.deepEqual(wrapIndexValue(10), UInt64.from('10'))
        assert.deepEqual(wrapIndexValue('name'), Name.from('name'))
    })

    const testABI = ABI.from(fs.readFileSync(`test/data/abis/rewards.gm.json`, {encoding: 'utf8'}))

    // Blob created from the testABI
    const testBlob = new Blob(Serializer.encode({object: testABI, type: ABI}).array)

    test('Converts ABI to Blob', function () {
        const result = abiToBlob(testABI)
        assert(result.equals(testBlob))
    })

    test('Converts Blob string to ABI', function () {
        const blobString = String(testBlob)
        const result = blobStringToAbi(blobString)
        assert(result.equals(testABI))
    })

    test('Check round trip conversion from ABI to Blob and back', function () {
        const blob = abiToBlob(testABI)
        const blobString = String(blob)
        const result = blobStringToAbi(blobString)
        assert(result.equals(testABI))
    })
})