use core::panic;

pub fn process_part1(input: &str) -> i32 {
    input
        .chars()
        .map(|char| {
            if char == '(' {
                1
            } else if char == ')' {
                -1
            } else if char == '\n' {
                0
            } else {
                panic!("Expected '(' or ')'")
            }
        })
        .sum()
}

pub fn process_part2(input: &str) -> i32 {
    let mut floor = 0;
    let mut pos = 0;
    for char in input.chars() {
        pos += 1;
        if char == '(' {
            floor += 1;
        } else if char == ')' {
            floor += -1;
        } else if char == '\n' {
            floor += 0;
        } else {
            panic!("Expected '(' or ')'")
        }
        if floor == -1 {
            break;
        }
    }
    pos
}

#[cfg(test)]
mod tests_1 {
    use super::*;

    #[test]
    fn it_works() {
        let result = process_part1("(())");
        assert_eq!(result, 0);
        let result = process_part1("(())");
        assert_eq!(result, 0);
        let result = process_part1("(((");
        assert_eq!(result, 3);
        let result = process_part1("(()(()(");
        assert_eq!(result, 3);
        let result = process_part1("))(((((");
        assert_eq!(result, 3);
        let result = process_part1("())");
        assert_eq!(result, -1);
        let result = process_part1("))(");
        assert_eq!(result, -1);
        let result = process_part1(")))");
        assert_eq!(result, -3);
        let result = process_part1(")())())");
        assert_eq!(result, -3);
    }

    #[test]
    fn part2() {
        let result = process_part2(")(())))(");
        assert_eq!(result, 1);
        let result = process_part2("()()))))");
        assert_eq!(result, 5);
    }
}