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use core::fmt;
use std::collections::HashSet;
use serde::Serialize;
use tracing::instrument;
use crate::database;
use crate::types::http::{Result, ResponseCode};
#[derive(Serialize)]
pub struct Post {
pub post_id: u64,
pub user_id: u64,
pub content: String,
pub likes: HashSet<u64>,
pub comments: Vec<(u64, String)>,
pub date: u64
}
impl fmt::Debug for Post {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_struct("Post")
.field("post_id", &self.post_id)
.finish()
}
}
impl Post {
#[instrument()]
pub fn from_post_id(post_id: u64) -> Result<Self> {
let Ok(Some(post)) = database::posts::get_post(post_id) else {
return Err(ResponseCode::BadRequest.text("Post does not exist"))
};
Ok(post)
}
#[instrument()]
pub fn from_post_page(page: u64) -> Result<Vec<Self>> {
let Ok(posts) = database::posts::get_post_page(page) else {
return Err(ResponseCode::BadRequest.text("Failed to fetch posts"))
};
Ok(posts)
}
#[instrument()]
pub fn from_user_id(user_id: u64) -> Result<Vec<Self>> {
let Ok(posts) = database::posts::get_users_posts(user_id) else {
return Err(ResponseCode::BadRequest.text("Failed to fetch posts"))
};
Ok(posts)
}
#[instrument()]
pub fn new(user_id: u64, content: String) -> Result<Self> {
let Ok(post) = database::posts::add_post(user_id, &content) else {
tracing::error!("Failed to create post");
return Err(ResponseCode::InternalServerError.text("Failed to create post"))
};
Ok(post)
}
#[instrument()]
pub fn comment(&mut self, user_id: u64, content: String) -> Result<()> {
self.comments.push((user_id, content));
if database::posts::update_post(self.post_id, &self.likes, &self.comments).is_err() {
tracing::error!("Failed to comment on post");
return Err(ResponseCode::InternalServerError.text("Failed to comment on post"))
}
Ok(())
}
#[instrument()]
pub fn like(&mut self, user_id: u64, state: bool) -> Result<()> {
if state {
self.likes.insert(user_id);
} else {
self.likes.remove(&user_id);
}
if database::posts::update_post(self.post_id, &self.likes, &self.comments).is_err() {
tracing::error!("Failed to change like state on post");
return Err(ResponseCode::InternalServerError.text("Failed to change like state on post"))
}
Ok(())
}
}
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