Twelve Days of Christmas Poem on console with Rust

twelve_days_of_xmas.rs

fn main() {
    twelve_days_of_xmas();
}

fn twelve_days_of_xmas(){
    let days = ["first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth", "tenth", "eleventh", "twelfth"];

    for (day_num, day) in days.iter().enumerate() {
        println!("For the {} day of Christmas my true love sent to me", day);

        for gift_day in (1..(day_num + 1)).rev(){
            if gift_day == 1 && day_num != 1 {
                println!("and ");
            }
            if gift_day == 1 {
                println!("a Patridge in a Pear Tree");
            } else if gift_day == 2 {
                println!("Two Turtle Doves");
            } else if gift_day == 3 {
                println!("Three French Hens");
            } else if gift_day == 4 {
                println!("Four Calling Birds");
            } else if gift_day == 5 {
                println!("Five Golden Rings");
            } else if gift_day == 6 {
                println!("Six Geese a Laying");
            } else if gift_day == 7 {
                println!("Seven Swans a Swimming");
            } else if gift_day == 8 {
                println!("Eight Maids a Milking");
            } else if gift_day == 9 {
                println!("Nine Ladies Dancing");
            } else if gift_day == 10 {
                println!("Ten Lords a Leaping");
            } else if gift_day == 11 {
                println!("Eleven Pipers Piping");
            } else if gift_day == 12 {
                println!("12 Drummers Drumming");
            }
        }
        
        println!("\n");
    }
}

Thanks @kronaemmanuel, you really helped me out on this one.
However, the output of the first day seems to be wrong.
A quick fix would be to add another element in the days array, so this would be like:

let days = [ "-", "first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth", "tenth", "eleventh", "twelfth"];