use crate::db::{db_get_comments, db_new_comment};
use crate::jwt::Authentication;
use crate::types::{CommentQueryParams, NewComment};
use crate::ServerState;

use actix_web::get;
use actix_web::web::{Data, Query};
use actix_web::{post, web::Json, HttpResponse, Responder, Result};
use log::info;

#[get("/comments")]
pub async fn get_comments(
    comment_filter: Query<CommentQueryParams>,
    state: Data<ServerState>,
) -> Result<impl Responder> {
    let post_id = comment_filter.post_id;
    let limit = comment_filter.limit.unwrap_or(10);
    let offset = comment_filter.offset.unwrap_or(0);

    info!(
        "Getting comments for post {} with limit {} and offset {}",
        post_id, limit, offset
    );

    let comments = db_get_comments(&state.pool, post_id, limit, offset).await;

    if comments.is_empty() {
        info!("No comments found for post {}", post_id);
        return Ok(HttpResponse::NotFound().json("No comments found"));
    }

    Ok(HttpResponse::Ok().json(comments))
}

#[post("/comments")]
pub async fn new_comment(
    data: Json<NewComment>,
    state: Data<ServerState>,
    auth: Data<Authentication>,
) -> Result<impl Responder> {
    let user_claims = auth.decode(&data.user_token);

    // Bail if the token is invalid
    if let Err(e) = user_claims {
        info!("Error validating token: {}", e);
        return Ok(HttpResponse::BadRequest().json("Error"));
    }

    let claims = user_claims.unwrap();

    let content = data.content.clone();
    let username = claims.sub.clone();

    // This one is avoidable if we just store the user id in the token
    let userid = sqlx::query!("SELECT id FROM users WHERE username = $1", username)
        .fetch_one(&state.pool)
        .await
        .unwrap()
        .id;

    info!(
        "User {:?}, with id {:?} is creating a new comment",
        &claims.sub, userid
    );

    info!("Creating a new comment {:?}", &data);

    let success = db_new_comment(&state.pool, data.parent_post_id, userid, &content).await;

    match success {
        true => {
            info!("User {:?} created a new comment", &claims.sub);
            Ok(HttpResponse::Ok().json("Successfully created comment"))
        }
        false => {
            info!("User {:?} failed to create a new comment", &claims.sub);
            Ok(HttpResponse::BadRequest().json("Failed to create comment"))
        }
    }
}