import { NS } from '../../../instrumented/svgcanvas/namespaces.js'
import * as utilities from '../../../instrumented/svgcanvas/utilities.js'
import * as coords from '../../../instrumented/svgcanvas/coords.js'

describe('coords', function () {
  let elemId = 1

  const root = document.createElement('div')
  root.id = 'root'
  root.style.visibility = 'hidden'
  document.body.append(root)

  /**
   * Set up tests with mock data.
   * @returns {void}
   */
  beforeEach(function () {
    const svgroot = document.createElementNS(NS.SVG, 'svg')
    svgroot.id = 'svgroot'
    root.append(svgroot)
    this.svg = document.createElementNS(NS.SVG, 'svg')
    svgroot.append(this.svg)

    // Mock out editor context.
    utilities.init(
      /**
      * @implements {module:utilities.EditorContext}
      */
      {
        getSvgRoot: () => { return this.svg },
        getDOMDocument () { return null },
        getDOMContainer () { return null }
      }
    )
    coords.init(
      /**
      * @implements {module:coords.EditorContext}
      */
      {
        getGridSnapping () { return false },
        getDrawing () {
          return {
            getNextId () { return String(elemId++) }
          }
        }
      }
    )
  })

  /**
   * Tear down tests, removing elements.
   * @returns {void}
   */
  afterEach(function () {
    while (this.svg.hasChildNodes()) {
      this.svg.firstChild.remove()
    }
  })

  it('Test remapElement(translate) for rect', function () {
    const rect = document.createElementNS(NS.SVG, 'rect')
    rect.setAttribute('x', '200')
    rect.setAttribute('y', '150')
    rect.setAttribute('width', '250')
    rect.setAttribute('height', '120')
    this.svg.append(rect)

    const attrs = {
      x: '200',
      y: '150',
      width: '125',
      height: '75'
    }

    // Create a translate.
    const m = this.svg.createSVGMatrix()
    m.a = 1; m.b = 0
    m.c = 0; m.d = 1
    m.e = 100; m.f = -50

    coords.remapElement(rect, attrs, m)

    assert.equal(rect.getAttribute('x'), '300')
    assert.equal(rect.getAttribute('y'), '100')
    assert.equal(rect.getAttribute('width'), '125')
    assert.equal(rect.getAttribute('height'), '75')
  })

  it('Test remapElement(scale) for rect', function () {
    const rect = document.createElementNS(NS.SVG, 'rect')
    rect.setAttribute('width', '250')
    rect.setAttribute('height', '120')
    this.svg.append(rect)

    const attrs = {
      x: '0',
      y: '0',
      width: '250',
      height: '120'
    }

    // Create a translate.
    const m = this.svg.createSVGMatrix()
    m.a = 2; m.b = 0
    m.c = 0; m.d = 0.5
    m.e = 0; m.f = 0

    coords.remapElement(rect, attrs, m)

    assert.equal(rect.getAttribute('x'), '0')
    assert.equal(rect.getAttribute('y'), '0')
    assert.equal(rect.getAttribute('width'), '500')
    assert.equal(rect.getAttribute('height'), '60')
  })

  it('Test remapElement(translate) for circle', function () {
    const circle = document.createElementNS(NS.SVG, 'circle')
    circle.setAttribute('cx', '200')
    circle.setAttribute('cy', '150')
    circle.setAttribute('r', '125')
    this.svg.append(circle)

    const attrs = {
      cx: '200',
      cy: '150',
      r: '125'
    }

    // Create a translate.
    const m = this.svg.createSVGMatrix()
    m.a = 1; m.b = 0
    m.c = 0; m.d = 1
    m.e = 100; m.f = -50

    coords.remapElement(circle, attrs, m)

    assert.equal(circle.getAttribute('cx'), '300')
    assert.equal(circle.getAttribute('cy'), '100')
    assert.equal(circle.getAttribute('r'), '125')
  })

  it('Test remapElement(scale) for circle', function () {
    const circle = document.createElementNS(NS.SVG, 'circle')
    circle.setAttribute('cx', '200')
    circle.setAttribute('cy', '150')
    circle.setAttribute('r', '250')
    this.svg.append(circle)

    const attrs = {
      cx: '200',
      cy: '150',
      r: '250'
    }

    // Create a translate.
    const m = this.svg.createSVGMatrix()
    m.a = 2; m.b = 0
    m.c = 0; m.d = 0.5
    m.e = 0; m.f = 0

    coords.remapElement(circle, attrs, m)

    assert.equal(circle.getAttribute('cx'), '400')
    assert.equal(circle.getAttribute('cy'), '75')
    // Radius is the minimum that fits in the new bounding box.
    assert.equal(circle.getAttribute('r'), '125')
  })

  it('Test remapElement(translate) for ellipse', function () {
    const ellipse = document.createElementNS(NS.SVG, 'ellipse')
    ellipse.setAttribute('cx', '200')
    ellipse.setAttribute('cy', '150')
    ellipse.setAttribute('rx', '125')
    ellipse.setAttribute('ry', '75')
    this.svg.append(ellipse)

    const attrs = {
      cx: '200',
      cy: '150',
      rx: '125',
      ry: '75'
    }

    // Create a translate.
    const m = this.svg.createSVGMatrix()
    m.a = 1; m.b = 0
    m.c = 0; m.d = 1
    m.e = 100; m.f = -50

    coords.remapElement(ellipse, attrs, m)

    assert.equal(ellipse.getAttribute('cx'), '300')
    assert.equal(ellipse.getAttribute('cy'), '100')
    assert.equal(ellipse.getAttribute('rx'), '125')
    assert.equal(ellipse.getAttribute('ry'), '75')
  })

  it('Test remapElement(scale) for ellipse', function () {
    const ellipse = document.createElementNS(NS.SVG, 'ellipse')
    ellipse.setAttribute('cx', '200')
    ellipse.setAttribute('cy', '150')
    ellipse.setAttribute('rx', '250')
    ellipse.setAttribute('ry', '120')
    this.svg.append(ellipse)

    const attrs = {
      cx: '200',
      cy: '150',
      rx: '250',
      ry: '120'
    }

    // Create a translate.
    const m = this.svg.createSVGMatrix()
    m.a = 2; m.b = 0
    m.c = 0; m.d = 0.5
    m.e = 0; m.f = 0

    coords.remapElement(ellipse, attrs, m)

    assert.equal(ellipse.getAttribute('cx'), '400')
    assert.equal(ellipse.getAttribute('cy'), '75')
    assert.equal(ellipse.getAttribute('rx'), '500')
    assert.equal(ellipse.getAttribute('ry'), '60')
  })

  it('Test remapElement(translate) for line', function () {
    const line = document.createElementNS(NS.SVG, 'line')
    line.setAttribute('x1', '50')
    line.setAttribute('y1', '100')
    line.setAttribute('x2', '120')
    line.setAttribute('y2', '200')
    this.svg.append(line)

    const attrs = {
      x1: '50',
      y1: '100',
      x2: '120',
      y2: '200'
    }

    // Create a translate.
    const m = this.svg.createSVGMatrix()
    m.a = 1; m.b = 0
    m.c = 0; m.d = 1
    m.e = 100; m.f = -50

    coords.remapElement(line, attrs, m)

    assert.equal(line.getAttribute('x1'), '150')
    assert.equal(line.getAttribute('y1'), '50')
    assert.equal(line.getAttribute('x2'), '220')
    assert.equal(line.getAttribute('y2'), '150')
  })

  it('Test remapElement(scale) for line', function () {
    const line = document.createElementNS(NS.SVG, 'line')
    line.setAttribute('x1', '50')
    line.setAttribute('y1', '100')
    line.setAttribute('x2', '120')
    line.setAttribute('y2', '200')
    this.svg.append(line)

    const attrs = {
      x1: '50',
      y1: '100',
      x2: '120',
      y2: '200'
    }

    // Create a translate.
    const m = this.svg.createSVGMatrix()
    m.a = 2; m.b = 0
    m.c = 0; m.d = 0.5
    m.e = 0; m.f = 0

    coords.remapElement(line, attrs, m)

    assert.equal(line.getAttribute('x1'), '100')
    assert.equal(line.getAttribute('y1'), '50')
    assert.equal(line.getAttribute('x2'), '240')
    assert.equal(line.getAttribute('y2'), '100')
  })

  it('Test remapElement(translate) for text', function () {
    const text = document.createElementNS(NS.SVG, 'text')
    text.setAttribute('x', '50')
    text.setAttribute('y', '100')
    this.svg.append(text)

    const attrs = {
      x: '50',
      y: '100'
    }

    // Create a translate.
    const m = this.svg.createSVGMatrix()
    m.a = 1; m.b = 0
    m.c = 0; m.d = 1
    m.e = 100; m.f = -50

    coords.remapElement(text, attrs, m)

    assert.equal(text.getAttribute('x'), '150')
    assert.equal(text.getAttribute('y'), '50')
  })
})