use rss::{ChannelBuilder, Item};
use serde::{Deserialize, Serialize};
use sqlx::{FromRow, SqlitePool};

#[derive(FromRow, Debug, Serialize, Deserialize)]
pub struct Log {
    pub msg: String,
    pub created_at: String,
}

impl Log {
    pub async fn create(db: &SqlitePool, msg: String) -> bool {
        sqlx::query!("INSERT INTO log(msg) VALUES (?)", msg,)
            .execute(db)
            .await
            .is_ok()
    }

    async fn last(db: &SqlitePool) -> Vec<Log> {
        sqlx::query_as!(
            Log,
            "
SELECT msg, created_at
FROM log 
ORDER BY id DESC
LIMIT 1000
    "
        )
        .fetch_all(db)
        .await
        .unwrap()
    }

    pub async fn generate_feed(db: &SqlitePool) -> String {
        let mut channel = ChannelBuilder::default()
            .title("Ruder App Admin Feed")
            .description("An RSS feed with activities from app.rudernlinz.at")
            .build();
        let mut items: Vec<Item> = vec![];
        for log in Self::last(db).await {
            let mut item = Item::default();
            item.set_title(format!("({}) {}", log.created_at, log.msg));
            items.append(&mut vec![item]);
        }
        channel.set_items(items);
        channel.to_string()
    }
}