/*
 * This runs unit tests for the pattern configuration
 * It expects the following:
 *
 * @param string me: Name of the pattern (eg 'aaron')
 * @param object Pattern: Instantiated pattern object
 * @param object meta: Object that holds pattern metadata eg: {
 *   name: 'aaron',
 *   version: '2.4.3',
 *   design: 'Joost De Cock',
 *   code: 'Joost De Cock',
 *   department: 'unisex',
 *   type: 'pattern',
 *   difficulty: 3,
 *   tags: [ 'underwear', 'top', 'basics' ],
 * }
 */
const testPatternConfig = (design, pattern, meta) => {
  const expect = require("chai").expect;
  const models = require("@freesewing/models")
  const patterns = require("@freesewing/pattern-info")

  it('Metadata:' , () => true)
  it(`  - 'name' should match package name`, () => {
    expect(pattern.config.name).to.equal(design)
  })
  it(`  - 'version' should be set and be a non-empty string`, () => {
    expect(typeof pattern.config.version).to.equal('string')
    expect(pattern.config.version.length > 1).to.be.true
  })
  for (let key of ['design', 'code', 'tags']) {
    it(`  - '${key}' should be a string or array of strings`, () => {
      if (typeof pattern.config[key] === 'string') {
        expect(pattern.config[key].length > 1).to.be.true
      } else {
        for (let d of pattern.config[key]) {
          expect(typeof d).to.equal('string')
          expect(d.length > 1).to.be.true
        }
      }
    })
  }
  it(`  - 'type' should be 'pattern' or 'block'`, () => {
    expect(['pattern', 'block'].indexOf(pattern.config.type)).to.not.equal(-1)
  })
  it(`  - 'department' should be one of menswear, womenswear, unisex, or accessories`, () => {
    expect(['menswear', 'womenswear', 'unisex', 'accessories'].indexOf(pattern.config.department)).to.not.equal(-1)
  })
  it(`  - 'difficulty' should be a number between 1 and 5`, () => {
    expect(typeof pattern.config.difficulty).to.equal('number')
    expect(pattern.config.difficulty > 0).to.be.true
    expect(pattern.config.difficulty < 6).to.be.true
  })


  /*
   *  Ensure optiongroup structure and content
   */
  it('Option groups:' , () => true)
  for (let group in pattern.config.optionGroups) {
    for (let option of pattern.config.optionGroups[group]) {
      if (typeof option === 'string') {
        it(`  - '${option}' should be a valid option`, () => {
          expect(pattern.config.options[option]).to.exist
        })
      } else {
        for (let subgroup in option) {
          it(`  Subgroup: ${subgroup}` , () => true)
          for (let suboption of option[subgroup]) {
            it(`    - '${suboption}' should be a valid option`, () => {
              expect(pattern.config.options[suboption]).to.exist
            })
          }
        }
      }
    }
  }


  /*
   *  Ensure pattern is listed as being for breasts or not
   */
  let breasts = false
  it('Pattern should be listed as with or without breasts', () => {
    let result = false
    if (patterns.withBreasts.indexOf(design) !== -1) {
      breasts = true
      result = true
    } else {
      if (patterns.withoutBreasts.indexOf(design) !== -1) result = true
    }
    expect(result).to.be.true
  })


  /*
   *  Ensure required measurements are known measurements
   */
  it('Required measurements:' , () => true)
  for (let measurement of pattern.config.measurements) {
    it(`  - '${measurement}' should be a known measurement`, () => {
      expect(models.measurements[breasts ? 'womenswear' : 'menswear'].indexOf(measurement)).to.not.equal(-1)
    })
  }

  /*
   *  Test validity of the pattern's options
   */
  it('Pattern options:' , () => true)
  for (let name in pattern.config.options) {
    let option = pattern.config.options[name]
    let type = typeof option
    let dflt
    if (type === 'object' && typeof option.pct !== 'undefined') {
      // Percentage option
      it(`  - '${name}' is a percentage option`, () => true)
      dflt = option.pct
      it(`    - Should have a default value`, () => {
        expect(typeof option.pct).to.equal('number')
      })
      it(`    - Should have a minimum <= the default value`, () => {
        expect(option.min <= option.pct).to.be.true
      })
      it(`    - Should have a maximum >= the default value`, () => {
        expect(option.max >= option.pct).to.be.true
      })
    }
    else if (type === 'object' && typeof option.deg !== 'undefined') {
      // Degree option
      it(`  - '${name}' is a degree option`, () => true)
      dflt = option.deg
      it(`    - Should have a default value`, () => {
        expect(typeof option.deg).to.equal('number')
      })
      it(`    - Should have a minimum <= the default value`, () => {
        expect(option.min <= option.deg).to.be.true
      })
      it(`    - Should have a maximum >= the default value`, () => {
        expect(option.max >= option.deg).to.be.true
      })
    }
    else if (type === 'object' && typeof option.mm !== 'undefined') {
      // Millimeter option
      it(`  - '${name}' is a distance (mm) option`, () => true)
      dflt = option.mm
      it(`    - Should have a default value`, () => {
        expect(typeof option.mm).to.equal('number')
      })
      it(`    - Should have a minimum <= the default value`, () => {
        expect(option.min <= option.mm).to.be.true
      })
      it(`    - Should have a maximum >= the default value`, () => {
        expect(option.max >= option.mm).to.be.true
      })
    }
    else if (type === 'object' && typeof option.bool !== 'undefined') {
      // Boolean option
      it(`  - '${name}' is a boolean option`, () => true)
      dflt = option.bool
      it(`    - Should have a default value`, () => {
        expect(typeof option.bool).to.equal('boolean')
      })
      it(`    - Default value should be one of TRUE or FALSE`, () => {
        expect([true, false].indexOf(option.bool)).to.not.equal(-1)
      })
    }
    else if (type === 'object' && typeof option.count !== 'undefined') {
      // Count option
      it(`  - '${name}' is a count option`, () => true)
      dflt = option.count
      it(`    - Should have a default value`, () => {
        expect(typeof option.count).to.equal('number')
      })
      it(`    - Should have a minimum <= the default value`, () => {
        expect(option.min <= option.count).to.be.true
      })
      it(`    - Should have a maximum >= the default value`, () => {
        expect(option.max >= option.count).to.be.true
      })
    }
    else if (type === 'object' && typeof option.list !== 'undefined') {
      // List option
      it(`  - '${name}' is a list option`, () => true)
      dflt = option.dflt
      it(`    - Should have a default value`, () => {
        expect(typeof option.dflt).to.not.equal('undefined')
      })
      it(`    - Its default value should be in the list of options`, () => {
        expect(option.list.indexOf(option.dflt)).to.not.equal(-1)
      })
      it(`    - Its options should be an array of numbers or strings`, () => {
        for (let o of option.list) expect(['number', 'string'].indexOf(typeof o)).to.not.equal(-1)
      })
    }
    else if (type === 'number') {
      // Static number
    }
    else if (type === 'string') {
      // Static string
    }
  }
}

module.exports = testPatternConfig