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use rusqlite::OptionalExtension;
use tracing::instrument;
use crate::{database, types::like::Like};
pub fn init() -> Result<(), rusqlite::Error> {
let sql = "
CREATE TABLE IF NOT EXISTS likes (
user_id INTEGER NOT NULL,
post_id INTEGER NOT NULL,
FOREIGN KEY(user_id) REFERENCES users(user_id),
FOREIGN KEY(post_id) REFERENCES posts(post_id),
PRIMARY KEY (user_id, post_id)
);
";
let conn = database::connect()?;
conn.execute(sql, ())?;
Ok(())
}
#[instrument()]
pub fn get_like_count(post_id: u64) -> Result<Option<u64>, rusqlite::Error> {
tracing::trace!("Retrieving like count");
let conn = database::connect()?;
let mut stmt = conn.prepare("SELECT COUNT(post_id) FROM likes WHERE post_id = ?")?;
let row = stmt
.query_row([post_id], |row| {
let row = row.get(0)?;
Ok(row)
})
.optional()?;
Ok(row)
}
#[instrument()]
pub fn get_liked(user_id: u64, post_id: u64) -> Result<bool, rusqlite::Error> {
tracing::trace!("Retrieving if liked");
let conn = database::connect()?;
let mut stmt = conn.prepare("SELECT * FROM likes WHERE user_id = ? AND post_id = ?")?;
let liked = stmt.query_row([user_id, post_id], |_| Ok(())).optional()?;
Ok(liked.is_some())
}
#[instrument()]
pub fn add_liked(user_id: u64, post_id: u64) -> Result<bool, rusqlite::Error> {
tracing::trace!("Adding like");
let conn = database::connect()?;
let mut stmt = conn.prepare("INSERT OR REPLACE INTO likes (user_id, post_id) VALUES (?,?)")?;
let changes = stmt.execute([user_id, post_id])?;
Ok(changes == 1)
}
#[instrument()]
pub fn remove_liked(user_id: u64, post_id: u64) -> Result<bool, rusqlite::Error> {
tracing::trace!("Removing like");
let conn = database::connect()?;
let mut stmt = conn.prepare("DELETE FROM likes WHERE user_id = ? AND post_id = ?;")?;
let changes = stmt.execute((user_id, post_id))?;
Ok(changes == 1)
}
#[instrument()]
pub fn get_all_likes() -> Result<Vec<Like>, rusqlite::Error> {
tracing::trace!("Retrieving comments page");
let conn = database::connect()?;
let mut stmt = conn.prepare("SELECT * FROM likes")?;
let row = stmt.query_map([], |row| {
let like = Like {
user_id: row.get(0)?,
post_id: row.get(1)?,
};
Ok(like)
})?;
Ok(row.into_iter().flatten().collect())
}
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