use chrono;
use sqlx;
use uuid::Uuid;

use crate::feeds::Feed;

pub async fn setup_demo_data(pool: &sqlx::SqlitePool) {
    // Create admin user
    let admin_id = Uuid::new_v4();
    let admin_id_str = admin_id.to_string();
    let admin_hash = bcrypt::hash("admin", bcrypt::DEFAULT_COST).unwrap();
    let now = chrono::Utc::now().to_rfc3339();

    sqlx::query(
        "INSERT INTO users (id, username, password_hash, email, display_name, created_at, admin) 
         VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7)",
    )
    .bind(&admin_id_str)
    .bind("admin")
    .bind(&admin_hash)
    .bind(Option::<String>::None)
    .bind(Option::<String>::None)
    .bind(&now)
    .bind(true)
    .execute(pool)
    .await
    .expect("Failed to create admin user");

    // Create demo user
    let demo_id = Uuid::new_v4();
    let demo_id_str = demo_id.to_string();
    let demo_hash = bcrypt::hash("demo", bcrypt::DEFAULT_COST).unwrap();

    sqlx::query(
        "INSERT INTO users (id, username, password_hash, email, display_name, created_at, admin) 
         VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7)",
    )
    .bind(&demo_id_str)
    .bind("demo")
    .bind(&demo_hash)
    .bind(Option::<String>::None)
    .bind(Option::<String>::None)
    .bind(&now)
    .bind(false)
    .execute(pool)
    .await
    .expect("Failed to create demo user");

    let feed = Feed::new(
        "BBC News".to_string(),
        "https://feeds.bbci.co.uk/news/world/us_and_canada/rss.xml"
            .parse()
            .unwrap(),
        demo_id,
    );

    // TODO: This insert logic is substantially the same as Feed::write_to_database.
    // Should find a way to unify these two code paths to avoid duplication.
    sqlx::query(
        "INSERT INTO feeds (feed_id, name, url, user_id, added_time, last_checked_time, categorization) 
         VALUES (?1, ?2, ?3, ?4, ?5, ?6, json(?7))",
    )
    .bind(feed.feed_id.to_string())
    .bind(&feed.name)
    .bind(feed.url.as_str())
    .bind(feed.user_id.to_string())
    .bind(feed.added_time.to_rfc3339())
    .bind(feed.last_checked_time.to_rfc3339())
    .bind("[]") // empty categorization array as JSON
    .execute(pool)
    .await
    .expect("Failed to create demo feed");

    println!("Successfully set up demo data");
}