import * as cacheUtils from '../src/cache-utils'

describe('cacheUtils-utils', () => {
    describe('can hash', () => {
        it('a string', async () => {
            const hash = cacheUtils.hashStrings(['foo'])
            expect(hash).toBe('acbd18db4cc2f85cedef654fccc4a4d8')
        })
        it('multiple strings', async () => {
            const hash = cacheUtils.hashStrings(['foo', 'bar', 'baz'])
            expect(hash).toBe('6df23dc03f9b54cc38a0fc1483df6e21')
        })
        it('normalized filenames', async () => {
            const fileNames = ['/foo/bar/baz.zip', '../boo.html']
            const posixHash = cacheUtils.hashFileNames(fileNames)
            const windowsHash = cacheUtils.hashFileNames(fileNames)
            expect(posixHash).toBe(windowsHash)
        })
    })
    describe('caching report', () => {
        describe('reports not fully restored', () => {
            it('with one requested entry report', async () => {
                const report = new cacheUtils.CachingReport()
                report.entryReport('foo').markRequested('1', ['2'])
                report.entryReport('bar').markRequested('3').markRestored('4')
                expect(report.fullyRestored).toBe(false)
            })
        })
        describe('reports fully restored', () => {
            it('when empty', async () => {
                const report = new cacheUtils.CachingReport()
                expect(report.fullyRestored).toBe(true)
            })
            it('with empty entry reports', async () => {
                const report = new cacheUtils.CachingReport()
                report.entryReport('foo')
                report.entryReport('bar')
                expect(report.fullyRestored).toBe(true)
            })
            it('with restored entry report', async () => {
                const report = new cacheUtils.CachingReport()
                report.entryReport('bar').markRequested('3').markRestored('4')
                expect(report.fullyRestored).toBe(true)
            })
            it('with multiple restored entry reportss', async () => {
                const report = new cacheUtils.CachingReport()
                report.entryReport('foo').markRestored('4')
                report.entryReport('bar').markRequested('3').markRestored('4')
                expect(report.fullyRestored).toBe(true)
            })
        })
        describe('can be stringified and rehydrated', () => {
            it('when empty', async () => {
                const report = new cacheUtils.CachingReport()

                const stringRep = report.stringify()
                const reportClone: cacheUtils.CachingReport = cacheUtils.CachingReport.rehydrate(stringRep)

                expect(reportClone.cacheEntryReports).toEqual([])

                // Can call methods on rehydrated
                expect(reportClone.entryReport('foo')).toBeInstanceOf(cacheUtils.CacheEntryReport)
            })
            it('with entry reports', async () => {
                const report = new cacheUtils.CachingReport()
                report.entryReport('foo')
                report.entryReport('bar')
                report.entryReport('baz')

                const stringRep = report.stringify()
                const reportClone: cacheUtils.CachingReport = cacheUtils.CachingReport.rehydrate(stringRep)

                expect(reportClone.cacheEntryReports.length).toBe(3)
                expect(reportClone.cacheEntryReports[0].entryName).toBe('foo')
                expect(reportClone.cacheEntryReports[1].entryName).toBe('bar')
                expect(reportClone.cacheEntryReports[2].entryName).toBe('baz')

                expect(reportClone.entryReport('foo')).toBe(reportClone.cacheEntryReports[0])
            })
            it('with rehydrated entry report', async () => {
                const report = new cacheUtils.CachingReport()
                const entryReport = report.entryReport('foo')
                entryReport.markRequested('1', ['2', '3'])
                entryReport.markSaved('4')

                const stringRep = report.stringify()
                const reportClone: cacheUtils.CachingReport = cacheUtils.CachingReport.rehydrate(stringRep)
                const entryClone = reportClone.entryReport('foo')

                expect(entryClone.requestedKey).toBe('1')
                expect(entryClone.requestedRestoreKeys).toEqual(['2', '3'])
                expect(entryClone.savedKey).toBe('4')
            })
            it('with live entry report', async () => {
                const report = new cacheUtils.CachingReport()
                const entryReport = report.entryReport('foo')
                entryReport.markRequested('1', ['2', '3'])

                const stringRep = report.stringify()
                const reportClone: cacheUtils.CachingReport = cacheUtils.CachingReport.rehydrate(stringRep)
                const entryClone = reportClone.entryReport('foo')

                // Check type and call method on rehydrated entry report
                expect(entryClone).toBeInstanceOf(cacheUtils.CacheEntryReport)
                entryClone.markSaved('4')

                expect(entryClone.requestedKey).toBe('1')
                expect(entryClone.requestedRestoreKeys).toEqual(['2', '3'])
                expect(entryClone.savedKey).toBe('4')
            })
        })
    })
})