import SwiftUI

@main
struct RNGApp: App {
    var body: some Scene {
        WindowGroup {
            ContentView()
        }
    }
}

// array combiner, adds up all ints in an array
func totalIntArr(arr: [Int]) -> Int {
    var total = 0
    for num in arr {
        total += num
    }
    return total
}

// array combiner, adds up all doubles in an array
func totalDoubleArr(arr: [Double]) -> Double {
    var total: Double = 0
    for num in arr {
        total += num
    }
    return total
}

// array combiner, adds or multiplies all ints in an array
func arrCombine(arr: [Int], combineMode: String) -> Int {
    var output = 0
    if combineMode == "plus" {
        for num in arr {
            output += num
        }
    } else if combineMode == "multiply" {
        output = 1
        for num in arr {
            output *= num
        }
    } else {
        print("invalid combineMode '\(combineMode)'. must be 'plus' or 'multiply', returning 0")
        return 0
    }
    return output
}


func rng(min: Int, max: Int, step: Int) -> Int {
    let range = (max - min) / step + 1
    var rng = Int.random(in: 0..<range)
    rng = min + rng * step
    return rng
}

func rng6Die() -> Int {
    return Int.random(in: 1...6)
}

func rngCDie(min: Int, max: Int) -> Int {
    return Int.random(in: min...max)
}

func rngN6DieArr(dies: Int) -> [Int] {
    var output: [Int] = []
    for _ in 1...dies {
        output.append(rng6Die())
    }
    return output
}

func rngNCDie(dies: Int, min: Int, max: Int) -> [Int] {
    var output: [Int] = []
    for _ in 1...dies {
        output.append(rngCDie(min: min, max: max))
    }
    return output
}

func rngInt(len: Int) -> Int {
    var result = ""
    for _ in 1...len {
        result += String(Int.random(in: 0...9))
    }
    let resultInt = Int(result)
    return resultInt!
} 

func rngString(len: Int) -> String {
    let letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
    return String((1..<len).map{ _ in letters.randomElement()! })
    
}