import {
  assertParse,
  Sketch,
  recast,
  initPromise,
  sketchFromKclValue,
  SourceRange,
  topLevelRange,
} from '../wasm'
import {
  ConstraintType,
  getTransformInfos,
  transformAstSketchLines,
} from './sketchcombos'
import { getSketchSegmentFromSourceRange } from './sketchConstraints'
import { enginelessExecutor } from '../../lib/testHelpers'
import { err } from 'lib/trap'
import { codeRefFromRange } from './artifactGraph'

beforeAll(async () => {
  await initPromise
})

// testing helper function
async function testingSwapSketchFnCall({
  inputCode,
  callToSwap,
  constraintType,
}: {
  inputCode: string
  callToSwap: string
  constraintType: ConstraintType
}): Promise<{
  newCode: string
  originalRange: SourceRange
}> {
  const startIndex = inputCode.indexOf(callToSwap)
  const range = topLevelRange(startIndex, startIndex + callToSwap.length)
  const ast = assertParse(inputCode)

  const execState = await enginelessExecutor(ast)
  const selections = {
    graphSelections: [
      {
        codeRef: codeRefFromRange(range, ast),
      },
    ],
    otherSelections: [],
  }
  const transformInfos = getTransformInfos(selections, ast, constraintType)

  if (!transformInfos)
    return Promise.reject(new Error('transformInfos undefined'))
  const ast2 = transformAstSketchLines({
    ast,
    memVars: execState.variables,
    selectionRanges: selections,
    transformInfos,
    referenceSegName: '',
  })
  if (err(ast2)) return Promise.reject(ast2)

  const newCode = recast(ast2.modifiedAst)
  if (err(newCode)) return Promise.reject(newCode)

  return {
    newCode,
    originalRange: range,
  }
}

describe('testing swapping out sketch calls with xLine/xLineTo', () => {
  const bigExampleArr = [
    `part001 = startSketchOn('XY')`,
    `  |> startProfileAt([0, 0], %)`,
    `  |> line(endAbsolute = [1, 1], tag = $abc1)`,
    `  |> line(end = [-2.04, -0.7], tag = $abc2)`,
    `  |> angledLine({ angle = 157, length = 1.69 }, %, $abc3)`,
    `  |> angledLineOfXLength({ angle = 217, length = 0.86 }, %, $abc4)`,
    `  |> angledLineOfYLength({ angle = 104, length = 1.58 }, %, $abc5)`,
    `  |> angledLineToX({ angle = 55, to = -2.89 }, %, $abc6)`,
    `  |> angledLineToY({ angle = 330, to = 2.53 }, %, $abc7)`,
    `  |> xLine(1.47, %, $abc8)`,
    `  |> yLine(1.57, %, $abc9)`,
    `  |> xLineTo(1.49, %, $abc10)`,
    `  |> yLineTo(2.64, %, $abc11)`,
    `  |> line(endAbsolute = [2.55, 3.58]) // lineTo`,
    `  |> line(end = [0.73, -0.75])`,
    `  |> angledLine([63, 1.38], %) // angledLine`,
    `  |> angledLineOfXLength([319, 1.15], %) // angledLineOfXLength`,
    `  |> angledLineOfYLength([50, 1.35], %) // angledLineOfYLength`,
    `  |> angledLineToX([291, 6.66], %) // angledLineToX`,
    `  |> angledLineToY([228, 2.14], %) // angledLineToY`,
    `  |> xLine(-1.33, %)`,
    `  |> yLine(-1.07, %)`,
    `  |> xLineTo(3.27, %)`,
    `  |> yLineTo(2.14, %)`,
  ]
  const bigExample = bigExampleArr.join('\n')
  it('line with tag converts to xLine', async () => {
    const callToSwap = 'line(end = [-2.04, -0.7], tag = $abc2)'
    const expectedLine = 'xLine(-2.04, %, $abc2)'
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: bigExample,
      callToSwap,
      constraintType: 'horizontal',
    })
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })
  it('line w/o tag converts to xLine', async () => {
    const callToSwap = 'line(end = [0.73, -0.75])'
    const expectedLine = 'xLine(0.73, %)'
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: bigExample,
      callToSwap,
      constraintType: 'horizontal',
    })
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })
  it('lineTo with tag converts to xLineTo', async () => {
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: bigExample,
      callToSwap: 'line(endAbsolute = [1, 1], tag = $abc1)',
      constraintType: 'horizontal',
    })
    const expectedLine = 'xLineTo(1, %, $abc1)'
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })
  it('lineTo w/o tag converts to xLineTo', async () => {
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: bigExample,
      callToSwap: 'line(endAbsolute = [2.55, 3.58])',
      constraintType: 'horizontal',
    })
    const expectedLine = 'xLineTo(2.55, %) // lineTo'
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })
  it('angledLine with tag converts to xLine', async () => {
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: bigExample,
      callToSwap: 'angledLine({ angle = 157, length = 1.69 }, %, $abc3)',
      constraintType: 'horizontal',
    })
    const expectedLine = 'xLine(-1.56, %, $abc3)'
    console.log(newCode)
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })
  it('angledLine w/o tag converts to xLine', async () => {
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: bigExample,
      callToSwap: 'angledLine([63, 1.38], %)',
      constraintType: 'horizontal',
    })
    const expectedLine = 'xLine(0.63, %) // angledLine'
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })
  it('angledLineOfXLength with tag converts to xLine', async () => {
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: bigExample,
      callToSwap:
        'angledLineOfXLength({ angle = 217, length = 0.86 }, %, $abc4)',
      constraintType: 'horizontal',
    })
    const expectedLine = 'xLine(-0.86, %, $abc4)'
    // hmm "-0.86" is correct since the angle is 104, but need to make sure this is compatible `-myVar`
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })
  it('angledLineOfXLength w/o tag converts to xLine', async () => {
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: bigExample,
      callToSwap: 'angledLineOfXLength([319, 1.15], %)',
      constraintType: 'horizontal',
    })
    const expectedLine = 'xLine(1.15, %) // angledLineOfXLength'
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })
  it('angledLineOfYLength with tag converts to yLine', async () => {
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: bigExample,
      callToSwap:
        'angledLineOfYLength({ angle = 104, length = 1.58 }, %, $abc5)',
      constraintType: 'vertical',
    })
    const expectedLine = 'yLine(1.58, %, $abc5)'
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })
  it('angledLineOfYLength w/o tag converts to yLine', async () => {
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: bigExample,
      callToSwap: 'angledLineOfYLength([50, 1.35], %)',
      constraintType: 'vertical',
    })
    const expectedLine = 'yLine(1.35, %) // angledLineOfYLength'
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })
  it('angledLineToX with tag converts to xLineTo', async () => {
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: bigExample,
      callToSwap: 'angledLineToX({ angle = 55, to = -2.89 }, %, $abc6)',
      constraintType: 'horizontal',
    })
    const expectedLine = 'xLineTo(-2.89, %, $abc6)'
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })
  it('angledLineToX w/o tag converts to xLineTo', async () => {
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: bigExample,
      callToSwap: 'angledLineToX([291, 6.66], %)',
      constraintType: 'horizontal',
    })
    const expectedLine = 'xLineTo(6.66, %) // angledLineToX'
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })
  it('angledLineToY with tag converts to yLineTo', async () => {
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: bigExample,
      callToSwap: 'angledLineToY({ angle = 330, to = 2.53 }, %, $abc7)',
      constraintType: 'vertical',
    })
    const expectedLine = 'yLineTo(2.53, %, $abc7)'
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })
  it('angledLineToY w/o tag converts to yLineTo', async () => {
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: bigExample,
      callToSwap: 'angledLineToY([228, 2.14], %)',
      constraintType: 'vertical',
    })
    const expectedLine = 'yLineTo(2.14, %) // angledLineToY'
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })
})

describe('testing swapping out sketch calls with xLine/xLineTo while keeping variable/identifiers intact', () => {
  // Enable rotations #152
  const variablesExampleArr = [
    `lineX = -1`,
    `lineToX = -1.3`,
    `angledLineAngle = 207`,
    `angledLineOfXLengthX = 0.8`,
    `angledLineOfYLengthY = 0.89`,
    `angledLineToXx = -1.86`,
    `angledLineToYy = -0.76`,
    `part001 = startSketchOn('XY')`,
    `  |> startProfileAt([0, 0], %)`,
    // `  |> rx(90, %)`,
    `  |> line(endAbsolute = [1, 1])`,
    `  |> line(end = [lineX, 2.13])`,
    `  |> line(endAbsolute = [lineToX, 2.85])`,
    `  |> angledLine([angledLineAngle, 1.64], %)`,
    `  |> angledLineOfXLength([329, angledLineOfXLengthX], %)`,
    `  |> angledLineOfYLength([222, angledLineOfYLengthY], %)`,
    `  |> angledLineToX([330, angledLineToXx], %)`,
    `  |> angledLineToY([217, angledLineToYy], %)`,
    `  |> line(end = [0.89, -0.1])`,
  ]
  const varExample = variablesExampleArr.join('\n')
  it('line keeps variable when converted to xLine', async () => {
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: varExample,
      callToSwap: 'line(end = [lineX, 2.13])',
      constraintType: 'horizontal',
    })
    const expectedLine = 'xLine(lineX, %)'
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })
  it('lineTo keeps variable when converted to xLineTo', async () => {
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: varExample,
      callToSwap: 'line(endAbsolute = [lineToX, 2.85])',
      constraintType: 'horizontal',
    })
    const expectedLine = 'xLineTo(lineToX, %)'
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })
  it('angledLineOfXLength keeps variable when converted to xLine', async () => {
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: varExample,
      callToSwap: 'angledLineOfXLength([329, angledLineOfXLengthX], %)',
      constraintType: 'horizontal',
    })
    const expectedLine = 'xLine(angledLineOfXLengthX, %)'
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })
  it('angledLineOfYLength keeps variable when converted to yLine', async () => {
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: varExample,
      callToSwap: 'angledLineOfYLength([222, angledLineOfYLengthY], %)',
      constraintType: 'vertical',
    })
    const expectedLine = 'yLine(-angledLineOfYLengthY, %)'
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })
  it('angledLineToX keeps variable when converted to xLineTo', async () => {
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: varExample,
      callToSwap: 'angledLineToX([330, angledLineToXx], %)',
      constraintType: 'horizontal',
    })
    const expectedLine = 'xLineTo(angledLineToXx, %)'
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })
  it('angledLineToY keeps variable when converted to yLineTo', async () => {
    const { newCode, originalRange } = await testingSwapSketchFnCall({
      inputCode: varExample,
      callToSwap: 'angledLineToY([217, angledLineToYy], %)',
      constraintType: 'vertical',
    })
    const expectedLine = 'yLineTo(angledLineToYy, %)'
    expect(newCode).toContain(expectedLine)
    // new line should start at the same place as the old line
    expect(originalRange[0]).toBe(newCode.indexOf(expectedLine))
  })

  it('trying to convert angledLineToY to xLineTo should not work because of the variable', async () => {
    const illegalConvert = () =>
      testingSwapSketchFnCall({
        inputCode: varExample,
        callToSwap: 'angledLineToY([217, angledLineToYy], %)',
        constraintType: 'horizontal',
      })
    await expect(illegalConvert).rejects.toThrowError('no callback helper')
  })
})

describe('testing getSketchSegmentIndexFromSourceRange', () => {
  const code = `
part001 = startSketchOn('XY')
  |> startProfileAt([0, 0.04], %) // segment-in-start
  |> line(end = [0, 0.4])
  |> xLine(3.48, %)
  |> line(end = [2.14, 1.35]) // normal-segment
  |> xLine(3.54, %)`
  it('normal case works', async () => {
    const execState = await enginelessExecutor(assertParse(code))
    const index = code.indexOf('// normal-segment') - 7
    const sg = sketchFromKclValue(
      execState.variables['part001'],
      'part001'
    ) as Sketch
    const _segment = getSketchSegmentFromSourceRange(
      sg,
      topLevelRange(index, index)
    )
    if (err(_segment)) throw _segment
    const { __geoMeta, ...segment } = _segment.segment
    expect(segment).toEqual({
      type: 'ToPoint',
      to: [5.62, 1.79],
      from: [3.48, 0.44],
      tag: null,
    })
  })
  it('verify it works when the segment is in the `start` property', async () => {
    const execState = await enginelessExecutor(assertParse(code))
    const index = code.indexOf('// segment-in-start') - 7
    const _segment = getSketchSegmentFromSourceRange(
      sketchFromKclValue(execState.variables['part001'], 'part001') as Sketch,
      topLevelRange(index, index)
    )
    if (err(_segment)) throw _segment
    const { __geoMeta, ...segment } = _segment.segment
    expect(segment).toEqual({
      to: [0, 0.04],
      from: [0, 0.04],
      tag: null,
      type: 'Base',
    })
  })
})