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use std::io;
use crate::db;
use crate::ed;
use crate::error;
use crate::user;
// Make sure nobody encodes narsty characters
// into a message to negatively affect other
// users
fn str_to_utf8(str: &str) -> String {
str.chars()
.map(|c| {
let mut buf = [0; 4];
c.encode_utf8(&mut buf).to_string()
})
.collect::<String>()
}
// First handler for creating a new post.
pub fn create() -> error::Result<()> {
println!();
println!("Title of the new post: ");
let mut title = String::new();
io::stdin().read_line(&mut title)?;
let title = str_to_utf8(title.trim());
let title = if title.len() > 30 {
&title[..30]
} else {
&title
};
println!();
let body_raw = str_to_utf8(&ed::call(""));
let body = if body_raw.len() > 500 {
&body_raw[..500]
} else {
&body_raw
};
let trimmed_body = body.trim();
let user = &*user::NAME;
let mut all = db::Posts::get_all(db::PATH);
let new = db::Post {
author: user.into(),
title: title.to_string(),
body: trimmed_body.to_string(),
};
all.append(new);
all.write();
println!();
Ok(())
}
// Shows the most recent posts.
pub fn display() -> error::Result<()> {
let all = db::Posts::get_all(db::PATH);
let mut postvec = Vec::new();
all.posts.iter().enumerate().for_each(|(id, post)| {
let newpost = format!(
"{}. {} -> by {}\n{}\n\n",
id + 1,
post.title.trim(),
post.author,
post.body.trim()
);
postvec.push(newpost);
});
for (i, e) in postvec.iter().enumerate() {
if (postvec.len() > 14 && i >= postvec.len() - 15) || postvec.len() < 15 {
print!("{}", e);
}
}
Ok(())
}
// First handler to update posts.
pub fn update_handler(id: usize) -> error::Result<()> {
let mut id_num_in = if id == 0 {
println!();
println!("ID number of your post to edit?");
let mut id_num_in = String::new();
io::stdin().read_line(&mut id_num_in)?;
id_num_in.trim().parse()?
} else {
id
};
id_num_in -= 1;
let user = &*user::NAME;
let mut all = db::Posts::get_all(db::PATH);
let post = all.get(id_num_in);
if *user != post.author {
println!();
println!("Users don't match. Can't update post!");
println!();
std::process::exit(1);
}
let mut new_title = String::new();
println!("Updating post {}", id_num_in);
println!();
println!("Current Title: {}", post.title);
println!();
println!("Enter new title:");
io::stdin().read_line(&mut new_title)?;
let body_raw = str_to_utf8(&ed::call(&post.body));
let body = if body_raw.len() > 500 {
&body_raw[..500]
} else {
&body_raw
};
let trimmed_body = body.trim();
all.replace(
id_num_in,
db::Post {
author: user.into(),
title: new_title,
body: trimmed_body.to_string(),
},
);
all.write();
println!();
Ok(())
}
// First handler to remove a post
pub fn delete_handler(id: usize) -> error::Result<()> {
let mut id_num_in = if id == 0 {
println!();
println!("ID of the post to delete?");
let mut id_num_in = String::new();
io::stdin().read_line(&mut id_num_in)?;
println!();
id_num_in.trim().parse()?
} else {
id
};
id_num_in -= 1;
let mut all = db::Posts::get_all(db::PATH);
let post = all.get(id_num_in);
if *user::NAME != post.author {
println!();
println!("Users don't match. Can't delete post!");
println!();
std::process::exit(1);
}
all.delete(id_num_in);
all.write();
Ok(())
}
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