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use crate::{by_id, from_json};
use serde::{Deserialize, Serialize};
use serde_with::skip_serializing_none;

const PLACEHOLDER_JSON_POSTS: &str = include_str!("posts.json");

#[skip_serializing_none]
#[derive(Deserialize, Serialize)]
pub struct Post {
    pub id: Option<i32>,
    pub title: String,
    pub body: String,
    #[serde(rename = "userId")]
    pub user_id: Option<i32>,
}

impl std::fmt::Display for Post {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "Post: title = {}", self.title)
    }
}

/// Get all the posts available
///
/// # Example
/// ```
/// use json_placeholder_data::posts::get_all;
/// assert_eq!(get_all().len(), 100);
/// ```
pub fn get_all() -> Vec<Post> {
    from_json!(PLACEHOLDER_JSON_POSTS)
}

/// Get a post by id
///
/// # Example
/// ```
/// use json_placeholder_data::posts::get;
/// assert_eq!(
///     get(1).title.as_str(),
///     "sunt aut facere repellat provident occaecati excepturi optio reprehenderit",
/// );
/// ```
pub fn get(id: i32) -> Post {
    by_id!(id)
}