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/*

Calculate the area of various shapes

*/

/**

* @function surfaceAreaCube

* @description Calculate the Surface Area of a Cube.

* @param {Integer} side - Integer

* @return {Integer} - 6 * side ** 2

* @see [surfaceAreaCube](https://en.wikipedia.org/wiki/Area#Surface_area)

* @example surfaceAreaCube(1) = 6

*/

const surfaceAreaCube = (side) => {

validateNumericParam(side, 'side')

return 6 * side ** 2

}

/**

* @function surfaceAreaSphere

* @description Calculate the Surface Area of a Sphere.

* @param {Integer} radius - Integer

* @return {Integer} - 4 * pi * r^2

* @see [surfaceAreaSphere](https://en.wikipedia.org/wiki/Sphere)

* @example surfaceAreaSphere(5) = 314.1592653589793

*/

const surfaceAreaSphere = (radius) => {

validateNumericParam(radius, 'radius')

return 4.0 * Math.PI * radius ** 2.0

}

/**

* @function areaRectangle

* @description Calculate the area of a rectangle.

* @param {Integer} length - Integer

* @param {Integer} width - Integer

* @return {Integer} - width * length

* @see [areaRectangle](https://en.wikipedia.org/wiki/Area#Quadrilateral_area)

* @example areaRectangle(4) = 16

*/

const areaRectangle = (length, width) => {

validateNumericParam(length, 'Length')

validateNumericParam(width, 'Width')

return width * length

}

/**

* @function areaSquare

* @description Calculate the area of a square.

* @param {Integer} side - Integer

* @return {Integer} - side ** 2.

* @see [areaSquare](https://en.wikipedia.org/wiki/Square)

* @example areaSquare(4) = 16

*/

const areaSquare = (side) => {

validateNumericParam(side, 'square side')

return side ** 2

}

/**

* @function areaTriangle

* @description Calculate the area of a triangle.

* @param {Integer} base - Integer

* @param {Integer} height - Integer

* @return {Integer} - base * height / 2.

* @see [areaTriangle](https://en.wikipedia.org/wiki/Area#Triangle_area)

* @example areaTriangle(1.66, 3.44) = 2.8552

*/

const areaTriangle = (base, height) => {

validateNumericParam(base, 'Base')

validateNumericParam(height, 'Height')

return (base * height) / 2.0

}

/**

* @function areaTriangleWithAllThreeSides

* @description Calculate the area of a triangle with the all three sides given.

* @param {Integer} side1 - Integer

* @param {Integer} side2 - Integer

* @param {Integer} side3 - Integer

* @return {Integer} - area of triangle.

* @see [areaTriangleWithAllThreeSides](https://en.wikipedia.org/wiki/Heron%27s_formula)

* @example areaTriangleWithAllThreeSides(5, 6, 7) = 14.7

*/

const areaTriangleWithAllThreeSides = (side1, side2, side3) => {

validateNumericParam(side1, 'side1')

validateNumericParam(side2, 'side2')

validateNumericParam(side3, 'side3')

if (

side1 + side2 <= side3 ||

side1 + side3 <= side2 ||

side2 + side3 <= side1

) {

throw new TypeError('Invalid Triangle sides.')

}

// Finding Semi perimeter of the triangle using formula

const semi = (side1 + side2 + side3) / 2

// Calculating the area of the triangle

const area = Math.sqrt(

semi * (semi - side1) * (semi - side2) * (semi - side3)

)

return Number(area.toFixed(2))

}

/**

* @function areaParallelogram

* @description Calculate the area of a parallelogram.

* @param {Integer} base - Integer

* @param {Integer} height - Integer

* @return {Integer} - base * height

* @see [areaParallelogram](https://en.wikipedia.org/wiki/Area#Dissection,_parallelograms,_and_triangles)

* @example areaParallelogram(5, 6) = 24

*/

const areaParallelogram = (base, height) => {

validateNumericParam(base, 'Base')

validateNumericParam(height, 'Height')

return base * height

}

/**

* @function areaTrapezium

* @description Calculate the area of a trapezium.

* @param {Integer} base1 - Integer

* @param {Integer} base2 - Integer

* @param {Integer} height - Integer

* @return {Integer} - (1 / 2) * (base1 + base2) * height

* @see [areaTrapezium](https://en.wikipedia.org/wiki/Trapezoid)

* @example areaTrapezium(5, 12, 10) = 85

*/

const areaTrapezium = (base1, base2, height) => {

validateNumericParam(base1, 'Base One')

validateNumericParam(base2, 'Base Two')

validateNumericParam(height, 'Height')

return (1 / 2) * (base1 + base2) * height

}

/**

* @function areaCircle

* @description Calculate the area of a circle.

* @param {Integer} radius - Integer

* @return {Integer} - Math.PI * radius ** 2

* @see [areaCircle](https://en.wikipedia.org/wiki/Area_of_a_circle)

* @example areaCircle(5, 12, 10) = 85

*/

const areaCircle = (radius) => {

validateNumericParam(radius, 'Radius')

return Math.PI * radius ** 2

}

/**

* @function areaRhombus

* @description Calculate the area of a rhombus.

* @param {Integer} diagonal1 - Integer

* @param {Integer} diagonal2 - Integer

* @return {Integer} - (1 / 2) * diagonal1 * diagonal2

* @see [areaRhombus](https://en.wikipedia.org/wiki/Rhombus)

* @example areaRhombus(12, 10) = 60

*/

const areaRhombus = (diagonal1, diagonal2) => {

validateNumericParam(diagonal1, 'diagonal one')

validateNumericParam(diagonal2, 'diagonal two')

return (1 / 2) * diagonal1 * diagonal2

}

const validateNumericParam = (param, paramName = 'param') => {

if (typeof param !== 'number') {

throw new TypeError('The ' + paramName + ' should be type Number')

} else if (param < 0) {

throw new Error('The ' + paramName + ' only accepts non-negative values')

}

}

export {

surfaceAreaCube,

surfaceAreaSphere,

areaRectangle,

areaSquare,

areaTriangle,

areaParallelogram,

areaTrapezium,

areaCircle,

areaRhombus,

areaTriangleWithAllThreeSides

}