b3_utils 0.13.1

use candid::{CandidType, Deserialize};
use serde_bytes::ByteBuf;

mod test;

mod builder;
pub use builder::*;

#[derive(Clone, Debug, CandidType, Deserialize)]
pub struct HttpRequest {
    pub method: String,
    pub url: String,
    pub headers: Vec<(String, String)>,
    pub body: ByteBuf,
}

impl HttpRequest {
    pub fn path(&self) -> &str {
        match self.url.find('?') {
            None => &self.url[..],
            Some(index) => &self.url[..index],
        }
    }

    /// Searches for the first appearance of a parameter in the request URL.
    /// Returns `None` if the given parameter does not appear in the query.
    pub fn raw_query_param(&self, param: &str) -> Option<&str> {
        const QUERY_SEPARATOR: &str = "?";
        let query_string = self.url.split(QUERY_SEPARATOR).nth(1)?;
        if query_string.is_empty() {
            return None;
        }
        const PARAMETER_SEPARATOR: &str = "&";
        for chunk in query_string.split(PARAMETER_SEPARATOR) {
            const KEY_VALUE_SEPARATOR: &str = "=";
            let mut split = chunk.splitn(2, KEY_VALUE_SEPARATOR);
            let name = split.next()?;
            if name == param {
                return Some(split.next().unwrap_or_default());
            }
        }
        None
    }
}