use warp::Filter;

use super::handlers;

/// The COMMENTs filters combined. 
pub fn comments() -> impl Filter<Extract = impl warp::Reply, Error = warp::Rejection> + Clone {
    index_page()
        .or( show_few_comments() )
        .or( show_comments_for_session_id() )
        .or( show_comments_for() )        
        .or( add_comment() )
        .or( update_comment_status() )
        .or( update_comment_msg() )
        .or( trash_comment() )
        .or( get_static_file() )
        .or( add_reply() )
        .or( get_image() )
        .or( get_icon() )
        .or( update_reply_msg() ) 
        .or( trash_reply() )
        .or( upvote() ) 
        .or( downvote() ) 
}

/// GET / -> index page (also referred as Home page)
pub fn index_page() -> impl Filter<Extract = impl warp::Reply, Error = warp::Rejection> + Clone {
    warp::get()
        .and( warp::path::end() )
        .and_then( handlers::index )
}

/// GET /comments
pub fn show_few_comments() -> impl Filter<Extract = impl warp::Reply, Error = warp::Rejection> + Clone {
    warp::path!("comments")
        .and(warp::get())
        .and_then(handlers::show_few_comments)
}

/// GET /comments/session_id/:id
pub fn show_comments_for_session_id() -> impl Filter<Extract = impl warp::Reply, Error = warp::Rejection> + Clone {
    warp::path!("comments"/ "session_id" / String)
        .and(warp::get())
        .and_then(handlers::show_comments_for_session_id)
}

/// GET /comments/count
pub fn show_comments_for() -> impl Filter<Extract = impl warp::Reply, Error = warp::Rejection> + Clone {
    warp::path!("comments" / usize)
        .and(warp::get())
        .and_then(handlers::show_comments_for)
}

/// POST /comments   -> to add a comment 
pub fn add_comment() -> impl Filter<Extract = impl warp::Reply, Error = warp::Rejection> + Clone {
    warp::path!("comments")
        .and(warp::post())
        .and(warp::body::form())
        .and_then(handlers::add_comment)
}

/// POST /comment/comment_id   -> to enable or disable a comment 
pub fn update_comment_status() -> impl Filter<Extract = impl warp::Reply, Error = warp::Rejection> + Clone {
    warp::path!("comment" / String )
        .and(warp::post())
        .and(warp::body::form())
        .and_then(handlers::update_comment_status)
}

/// POST /comment_message  -> to update message/text in a comment 
pub fn update_comment_msg() -> impl Filter<Extract = impl warp::Reply, Error = warp::Rejection> + Clone {
    warp::path!("comment_message")
        .and(warp::post())
        .and(warp::body::form())
        .and_then(handlers::update_comment_msg)
}

/// DELETE /comments/unique_id/user_id   -> to trash a comment, i.e. mark a comment as deleted
pub fn trash_comment() -> impl Filter<Extract = impl warp::Reply, Error = warp::Rejection> + Clone {
    warp::path!("comments" / String / String)
        .and(warp::delete())
        .and_then(handlers::trash_comment)
}

/// POST /reply_message  -> to update message/text in a reply 
pub fn update_reply_msg() -> impl Filter<Extract = impl warp::Reply, Error = warp::Rejection> + Clone {
    warp::path!("reply_message")
        .and(warp::post())
        .and(warp::body::form())
        .and_then(handlers::update_reply_msg)
}

/// POST /replies   -> to add a reply
pub fn add_reply() -> impl Filter<Extract = impl warp::Reply, Error = warp::Rejection> + Clone {
    warp::path!("replies")
        .and(warp::post())
        .and(warp::body::form())
        .and_then(handlers::add_reply)
}

/// DELETE /replies/unique_id   -> to trash a reply, i.e. mark a reply as deleted
pub fn trash_reply() -> impl Filter<Extract = impl warp::Reply, Error = warp::Rejection> + Clone {
    warp::path!("replies" / String )
        .and(warp::delete())
        .and_then(handlers::trash_reply)
}

/// GET /static/comment.js
pub fn get_static_file() -> impl Filter<Extract = impl warp::Reply, Error = warp::Rejection> + Clone {
    warp::path!("static" / String)
        .and(warp::get())
        .and_then(handlers::get_static_file)
}

/// GET /images/name
pub fn get_image() -> impl Filter<Extract = impl warp::Reply, Error = warp::Rejection> + Clone {
    warp::path!("images" / String)
        .and(warp::get())
        .and_then(handlers::get_image)
}

/// GET /images/icons/name
pub fn get_icon() -> impl Filter<Extract = impl warp::Reply, Error = warp::Rejection> + Clone {
    warp::path!("images" / String / String)
        .and(warp::get())
        .and_then(handlers::get_image_type)
}

/// POST /upvotes   -> add/remove an upvote (or simple toggle an upvote)
pub fn upvote() -> impl Filter<Extract = impl warp::Reply, Error = warp::Rejection> + Clone {
    warp::path!("upvotes")
        .and(warp::post())
        .and(warp::body::form())
        .and_then(handlers::upvote)
}

/// POST /downvotes   -> add/remove an downvote (or simple toggle an downvote)
pub fn downvote() -> impl Filter<Extract = impl warp::Reply, Error = warp::Rejection> + Clone {
    warp::path!("downvotes")
        .and(warp::post())
        .and(warp::body::form())
        .and_then(handlers::downvote)
}