use crate::api::Meme;
use anyhow::bail;
use std::str::FromStr;

pub mod consts {
    pub const API_ENDPOINT: &str = "https://api.tilera.xyz/jensmemes/v1/";
}

pub enum MemeSorting {
    Id,
    Link,
    Category,
    User,
    Timestamp,
}

impl MemeSorting {
    pub fn sort_with(&self, memes: &mut [&Meme]) {
        macro_rules! sort {
            ($list:ident, $field:ident) => {
                $list.sort_by(|a, b| {
                    a.$field
                        .to_ascii_lowercase()
                        .cmp(&b.$field.to_ascii_lowercase())
                });
            };
        }

        match self {
            Self::Id => sort!(memes, id),
            Self::Link => sort!(memes, link),
            Self::Category => sort!(memes, category),
            Self::User => sort!(memes, user),
            Self::Timestamp => memes.sort_by(|a, b| b.timestamp.cmp(&a.timestamp)),
        }
    }
}

impl FromStr for MemeSorting {
    type Err = anyhow::Error;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        match s.to_lowercase().as_ref() {
            "id" => Ok(Self::Id),
            "link" => Ok(Self::Link),
            "category" => Ok(Self::Category),
            "user" => Ok(Self::User),
            "timestamp" => Ok(Self::Timestamp),
            _ => bail!("Invalid Meme sorting! options are id, link, category and user!"),
        }
    }
}