import { extractConfigFromFile } from '../packages/runtime/src/helpers/analysis'
import { resolve } from 'pathe'
import { getDependenciesOfFile } from '../packages/runtime/src/helpers/files'
import { dirname } from 'path'
describe('static source analysis', () => {
  beforeEach(() => {
    //  Spy on console.error
    jest.spyOn(console, 'error').mockImplementation(() => {})
  })
  afterEach(() => {
    //  Restore console.error
    ;(console.error as jest.Mock).mockRestore()
  })
  it('should extract config values from a source file', async () => {
    const config = await extractConfigFromFile(resolve(__dirname, 'fixtures/analysis/background.js'))
    expect(config).toEqual({
      type: 'experimental-background',
    })
  })
  it('should extract config values from a TypeScript source file', async () => {
    const config = await extractConfigFromFile(resolve(__dirname, 'fixtures/analysis/background.ts'))
    expect(config).toEqual({
      type: 'experimental-background',
    })
  })
  it('should return an empty config if not defined', async () => {
    const config = await extractConfigFromFile(resolve(__dirname, 'fixtures/analysis/missing.ts'))
    expect(config).toEqual({})
  })

  it('should return an empty config if config is invalid', async () => {
    const config = await extractConfigFromFile(resolve(__dirname, 'fixtures/analysis/invalid.ts'))
    expect(config).toEqual({})
  })

  it('should extract schedule values from a source file', async () => {
    const config = await extractConfigFromFile(resolve(__dirname, 'fixtures/analysis/scheduled.ts'))
    expect(config).toEqual({
      type: 'experimental-scheduled',
      schedule: '@daily',
    })
  })
  it('should throw if schedule is provided when type is background', async () => {
    await expect(extractConfigFromFile(resolve(__dirname, 'fixtures/analysis/background-schedule.ts'))).rejects.toThrow(
      'Unsupported config value in test/fixtures/analysis/background-schedule.ts',
    )
    expect(console.error).toHaveBeenCalledWith(
      `Invalid config value in test/fixtures/analysis/background-schedule.ts: schedule is not allowed unless type is "experimental-scheduled"`,
    )
  })
  it('should throw if schedule is provided when type is default', async () => {
    await expect(extractConfigFromFile(resolve(__dirname, 'fixtures/analysis/default-schedule.ts'))).rejects.toThrow(
      'Unsupported config value in test/fixtures/analysis/default-schedule.ts',
    )
    expect(console.error).toHaveBeenCalledWith(
      `Invalid config value in test/fixtures/analysis/default-schedule.ts: schedule is not allowed unless type is "experimental-scheduled"`,
    )
  })
  it('should throw if schedule is not provided when type is scheduled', async () => {
    await expect(extractConfigFromFile(resolve(__dirname, 'fixtures/analysis/missing-schedule.ts'))).rejects.toThrow(
      'Unsupported config value in test/fixtures/analysis/missing-schedule.ts',
    )
    expect(console.error).toHaveBeenCalledWith(
      `Invalid config value in test/fixtures/analysis/missing-schedule.ts: schedule is required when type is "experimental-scheduled"`,
    )
  })
  it('should throw if edge runtime is specified for scheduled functions', async () => {
    await expect(extractConfigFromFile(resolve(__dirname, 'fixtures/analysis/scheduled-edge.ts'))).rejects.toThrow(
      'Unsupported config value in test/fixtures/analysis/scheduled-edge.ts',
    )
    expect(console.error).toHaveBeenCalledWith(
      `Invalid config value in test/fixtures/analysis/scheduled-edge.ts: edge runtime is not supported for scheduled functions`,
    )
  })
  it('should throw if edge runtime is specified for background functions', async () => {
    await expect(extractConfigFromFile(resolve(__dirname, 'fixtures/analysis/background-edge.ts'))).rejects.toThrow(
      'Unsupported config value in test/fixtures/analysis/background-edge.ts',
    )
    expect(console.error).toHaveBeenCalledWith(
      `Invalid config value in test/fixtures/analysis/background-edge.ts: edge runtime is not supported for background functions`,
    )
  })
})

describe('dependency tracing', () => {
  it('generates dependency list from a source file', async () => {
    const dependencies = await getDependenciesOfFile(resolve(__dirname, 'fixtures/analysis/background.js'))
    expect(dependencies).toEqual(
      ['test/webpack-api-runtime.js', 'package.json'].map((dep) => resolve(dirname(__dirname), dep)),
    )
  })
})