/* https://sapintegrationsuitecourse.com */
//Empty List
def emptyList = [] //define an empty list
assert emptyList.size() == 0  //empty list size is 0
assert emptyList.getClass() == java.util.ArrayList  //list class is java.util.ArrayList


//Access list by index, range
def num_list = [50, 80, 99, 20] //define a list with 3 number
assert num_list.size() == 4
assert num_list[1] == 80 //access the index 1 (2nd position)
assert num_list[1,3] == [80, 20] //access the index 1 and 3
assert num_list[1..3] == [80, 99, 20] //access the range from index 1 to 3


//List can mix different kind of object
def mixed_list = [10, 20, "aaa", "bbb", 30, "ccc", true, ["X", "Y"], null, []]
assert mixed_list.size() == 10
assert mixed_list[1,2] == [20, "aaa"]
assert mixed_list[6,7] == [true, ["X", "Y"]]
assert mixed_list[7][1] == "Y"
assert mixed_list[8] == null
assert mixed_list[9] == []


//Add, Remove item from list
def m_list = []

m_list = m_list + "a" //Add 'a'
assert m_list == ["a"]

m_list.add("b") //Add 'b'
assert m_list == ["a", "b"]

m_list += ["c", "d"] //Add 'c' and 'd'
assert m_list == ["a", "b", "c", "d"]

m_list << "e" << "f" //Add 'e' and 'f'
assert m_list == ["a", "b", "c", "d", "e", "f"]

m_list = m_list - ["a", "f"] //Remove 'a' and 'f'
assert m_list == ["b", "c", "d", "e"]


//Pop and Push item (Stack behavior)
def n_list = ["Apple", "Orange", "Keyboard"]

def n_value = n_list.pop() //Pop item to remove last item from list
assert n_value == "Keyboard"
assert n_list == ["Apple", "Orange"]

n_list.push("Mango") //Push to add item to end of the list
assert n_list == ["Apple", "Orange", "Mango"]


//First, Last, Head, Tail
def o_list = ["The", "quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog"]
assert o_list.first() == "The" //Get the first item
assert o_list.last() == "dog" //Get the last item
assert o_list.head() == "The" //Take the head (first item)
assert o_list.tail() == ["quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog"] //Chop the head (first item), take the tail (all remaining items)


//Take, TakeRight, Drop, DropRight
assert o_list.take(3) == ["The", "quick", "brown"] //Take the first 3 items
assert o_list.takeRight(3) == ["the", "lazy", "dog"] //Take right-most/last 3 items
assert o_list.drop(3) == ["fox", "jumps", "over", "the", "lazy", "dog"] //Drop the first 3 items
assert o_list.dropRight(3) == ["The", "quick", "brown", "fox", "jumps", "over"] //Drop the right-most/last 3 items


//Contains, ContainsAll
assert o_list.contains("dog") == true //check if list contains 'dog'
assert o_list.containsAll("dog", "fox") == true //check if list contains 'dog' AND 'fox'
assert o_list.containsAll("dog", "snake") == false //check if list contains 'dog' AND 'snake'


//define a list with 7 strings
def q_list = ["Life", "is", "like", "a", "box", "of", "chocolates"]

//Loop or iterate each item
q_list.each {
    println it.toString()
}
println '-------------------------------------'
q_list.each {item ->
    println item.toString()
}
println '-------------------------------------'
q_list.eachWithIndex{ item, idx ->
    println "$idx | $item"
}
println '-------------------------------------'


//Find, FindAll
def q_found_list = q_list.findAll {this_item ->
    this_item.length() <= 3 && this_item.contains("o") //Find all short word that length up to 3 AND contains 'o'
}
assert q_found_list == ["box", "of"]

q_found_list = q_list.find {this_item ->
    this_item.length() <= 3 && this_item.contains("o") //Find first short word that length up to 3 AND contains 'o'
}
assert q_found_list == "box"


//Join
assert q_list.join("-") == "Life-is-like-a-box-of-chocolates"


//Create unique list
def p_list = [1, 2, 2, 3, 3, 3, 4, 4, 4, 4]
assert p_list.unique(false) == [1, 2, 3, 4] //Return unique list but not modify original list
assert p_list == [1, 2, 2, 3, 3, 3, 4, 4, 4, 4] //original list still unmodified
assert p_list.unique() == [1, 2, 3, 4] //Return unique list and original list modified become unique
assert p_list == [1, 2, 3, 4]  //original list modified become unique

//Alternative way, add item into unique list
def unique_list = []
p_list.each{item ->
    if(!unique_list.contains(item)){
        unique_list.add(item)
    }
}
assert unique_list == [1, 2, 3, 4]  //unique_list