use crate::config::types::RedditUsername;
use chrono::{DateTime, TimeZone, Utc};
use color_eyre::eyre::{Result, WrapErr};
use roux::util::FeedOption;
use roux::User;
use serde::{Deserialize, Serialize};

#[derive(Debug, Serialize, Deserialize)]
pub struct RedditPost {
    pub title: String,
    pub body: String,
    pub subreddit: String,
    pub created: DateTime<Utc>,
}

/// A client for interacting with Reddit API
pub struct RedditClient;

impl RedditClient {
    /// Create a new RedditClient
    pub fn new() -> Self {
        RedditClient
    }

    /// Fetch submissions for a user
    ///
    /// # Arguments
    ///
    /// * `username` - The Reddit username to fetch submissions for
    /// * `post_count` - The maximum number of posts to fetch
    pub async fn fetch_user_submissions(
        &self,
        username: &RedditUsername,
        post_count: u32,
    ) -> Result<Vec<RedditPost>> {
        let user = User::new(username.as_str());
        let feed_option = FeedOption::new().limit(post_count);
        let submissions = user
            .submitted(Some(feed_option))
            .await
            .context(format!("Failed to fetch submissions for user {}", username))?;

        let mut children = Vec::new();
        for post in submissions.data.children.iter() {
            children.push(RedditPost {
                title: post.data.title.clone(),
                body: post.data.selftext.clone(),
                subreddit: post.data.subreddit.clone(),
                created: Utc.timestamp_opt(post.data.created_utc as i64, 0).unwrap(),
            });
        }

        Ok(children)
    }
}