'use strict'

const path = require('path')
const { expect } = require('chai')
const fs = require('fs').promises
const fse = require('fs-extra')
const spawn = require('child-process-ext/spawn')
const serverlessExec = require('../serverless-binary')
const { getTmpDirPath, listZipFiles } = require('../utils/fs')

const fixturePaths = {
  regular: path.join(__dirname, 'fixtures/regular'),
  individually: path.join(__dirname, 'fixtures/individually'),
  individuallyFunction: path.join(__dirname, 'fixtures/individually-function'),
}

describe('Integration test - Packaging - Lambda Files', () => {
  let cwd
  beforeEach(() => {
    cwd = getTmpDirPath()
  })

  it('packages the default aws template correctly in the zip', async () => {
    await fse.copy(fixturePaths.regular, cwd)
    await spawn(serverlessExec, ['package'], { cwd })
    expect(
      await listZipFiles(path.join(cwd, '.serverless/aws-nodejs.zip')),
    ).to.deep.equal(['handler.js'])
  })

  it('packages the default aws template with an npm dep correctly in the zip', async () => {
    await fse.copy(fixturePaths.regular, cwd)
    await spawn('npm', ['init', '--yes'], { cwd })
    await spawn('npm', ['i', 'lodash'], { cwd })
    await spawn(serverlessExec, ['package'], { cwd })
    const zipfiles = await listZipFiles(
      path.join(cwd, '.serverless/aws-nodejs.zip'),
    )
    const nodeModules = new Set(
      zipfiles
        .filter((f) => f.startsWith('node_modules'))
        .map((f) => f.split(path.sep)[1]),
    )
    nodeModules.delete('.package-lock.json')
    const nonNodeModulesFiles = zipfiles.filter(
      (f) => !f.startsWith('node_modules'),
    )
    expect(Array.from(nodeModules)).to.deep.equal(['lodash'])
    expect(nonNodeModulesFiles).to.deep.equal([
      'handler.js',
      'package-lock.json',
      'package.json',
    ])
  })

  it("doesn't package a dev dependency in the zip", async () => {
    await fse.copy(fixturePaths.regular, cwd)
    await spawn('npm', ['init', '--yes'], { cwd })
    await spawn('npm', ['i', '--save-dev', 'lodash'], { cwd })
    await spawn(serverlessExec, ['package'], { cwd })
    const zipfiles = await listZipFiles(
      path.join(cwd, '.serverless/aws-nodejs.zip'),
    )
    const nodeModules = new Set(
      zipfiles
        .filter((f) => f.startsWith('node_modules'))
        .map((f) => f.split(path.sep)[1]),
    )
    nodeModules.delete('.package-lock.json')
    const nonNodeModulesFiles = zipfiles.filter(
      (f) => !f.startsWith('node_modules'),
    )
    expect(Array.from(nodeModules)).to.deep.equal([])
    expect(nonNodeModulesFiles).to.deep.equal([
      'handler.js',
      'package-lock.json',
      'package.json',
    ])
  })

  it('ignores package json files per ignore directive in the zip', async () => {
    await fse.copy(fixturePaths.regular, cwd)
    await spawn('npm', ['init', '--yes'], { cwd })
    await fs.appendFile(
      path.resolve(cwd, 'serverless.yml'),
      '\npackage: {patterns: ["!package*.json"]}\n',
    )
    await spawn('npm', ['i', 'lodash'], { cwd })
    await spawn(serverlessExec, ['package'], { cwd })
    const zipfiles = await listZipFiles(
      path.join(cwd, '.serverless/aws-nodejs.zip'),
    )
    const nodeModules = new Set(
      zipfiles
        .filter((f) => f.startsWith('node_modules'))
        .map((f) => f.split(path.sep)[1]),
    )
    nodeModules.delete('.package-lock.json')
    const nonNodeModulesFiles = zipfiles.filter(
      (f) => !f.startsWith('node_modules'),
    )
    expect(Array.from(nodeModules)).to.deep.equal(['lodash'])
    expect(nonNodeModulesFiles).to.deep.equal(['handler.js'])
  })

  it('handles package individually with patterns correctly', async () => {
    await fse.copy(fixturePaths.individually, cwd)
    await spawn(serverlessExec, ['package'], { cwd })
    expect(
      await listZipFiles(path.join(cwd, '.serverless/hello.zip')),
    ).to.deep.equal(['handler.js'])
    expect(
      await listZipFiles(path.join(cwd, '.serverless/hello2.zip')),
    ).to.deep.equal(['handler2.js'])
  })

  it('handles package individually on function level with patterns correctly', async () => {
    await fse.copy(fixturePaths.individuallyFunction, cwd)
    await spawn(serverlessExec, ['package'], { cwd })
    expect(
      await listZipFiles(path.join(cwd, '.serverless/hello.zip')),
    ).to.deep.equal(['handler.js'])
    expect(
      await listZipFiles(path.join(cwd, '.serverless/hello2.zip')),
    ).to.deep.equal(['handler2.js'])
  })
})