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use crate::db::get_client;
use crate::errors::{AppError, AppErrorType};
use chrono::{DateTime, Local};
use deadpool_postgres::Pool;
use serde::{Deserialize, Serialize};
use tokio_pg_mapper::FromTokioPostgresRow;
use tokio_pg_mapper_derive::PostgresMapper;
#[derive(Serialize, Deserialize, PostgresMapper)]
#[pg_mapper(table = "commit")]
/// Commit model
pub struct Commit {
pub hash: String,
pub tree: Option<String>,
pub text: String,
pub date: DateTime<Local>,
pub author_email: String, // Reference to Email
pub author_name: String,
pub committer_email: String, // Reference to Email
pub committer_name: String,
pub repository_url: String, // Reference to Repository
}
/// Model used for 'most authors' function
#[derive(Serialize, Deserialize)]
pub struct CommitNumAuthor {
pub num: i64,
pub author_email: String,
pub author_name: String,
}
impl Commit {
/// Find all commits. Order them by descrescent `date` field
/// `commit_hash` is used to search commit that matches with some sha codes
pub async fn find_all(
pool: Pool,
commit_hash: &String,
) -> Result<Vec<Commit>, AppError> {
let client = get_client(pool.clone()).await.unwrap();
let query;
let hash;
if commit_hash != "" {
hash = format!("%{}%", commit_hash);
query = "SELECT * FROM commit WHERE hash LIKE $1 ORDER BY date DESC LIMIT 300";
} else {
hash = String::new();
query = "SELECT * FROM commit ORDER BY date DESC LIMIT 300"
}
let statement = client.prepare(query).await?;
let commits;
if hash != "" {
commits = client.query(&statement, &[&hash]).await?;
} else {
commits = client.query(&statement, &[]).await?;
}
let result = commits
.iter()
.map(|row| Commit::from_row_ref(row).unwrap())
.collect::<Vec<Commit>>();
Ok(result)
}
/// Find all repository url' commits
pub async fn find_by_repository(
pool: Pool,
repository_url: String,
) -> Result<Vec<Commit>, AppError> {
let client = get_client(pool.clone()).await.unwrap();
let statement = client
.prepare(
"SELECT * FROM commit
WHERE repository_url = $1
ORDER BY date DESC
LIMIT 1000",
)
.await?;
let commits = client
.query(&statement, &[&repository_url])
.await?
.iter()
.map(|row| Commit::from_row_ref(row).unwrap())
.collect::<Vec<Commit>>();
Ok(commits)
}
// Find a commit that it has an hash equals to `hash`
pub async fn find(pool: Pool, hash: String) -> Result<Commit, AppError> {
let client = get_client(pool.clone()).await.unwrap();
let statement = client
.prepare("SELECT * FROM commit WHERE hash = $1")
.await?;
let commit = client
.query_opt(&statement, &[&hash])
.await?
.map(|row| Commit::from_row_ref(&row).unwrap());
match commit {
Some(commit) => Ok(commit),
None => Err(AppError {
error_type: AppErrorType::NotFoundError,
cause: None,
message: Some("Commit not found".to_string()),
}),
}
}
/// Find a commit and delete it, but before check if "Authorization"
/// matches with SECRET_KEY
pub async fn delete(
pool: Pool,
hash: &String,
) -> Result<Commit, AppError> {
let client = get_client(pool.clone()).await.unwrap();
let statement = client
.prepare(
"
DELETE FROM commit
WHERE hash=$1
RETURNING *
",
)
.await?;
let commit = client
.query_opt(&statement, &[&hash])
.await?
.map(|row| Commit::from_row_ref(&row).unwrap());
match commit {
Some(commit) => Ok(commit),
None => Err(AppError {
error_type: AppErrorType::NotFoundError,
cause: None,
message: Some("Commit not found".to_string()),
}),
}
}
/// Create commits from an array
pub async fn create(
pool: Pool,
commits: Vec<Commit>,
) -> Result<Vec<Commit>, AppError> {
let client = get_client(pool.clone()).await.unwrap();
let mut raw_query = "INSERT INTO commit VALUES".to_string();
for commit in commits {
let tree = match commit.tree {
Some(t) => format!("'{}'", t),
None => "NULL".to_string(),
};
raw_query += &format!(
"('{}', {}, E'{}', '{}', '{}', E'{}', '{}', E'{}', '{}'),",
commit.hash,
tree,
commit.text.replace("\\'", "'").replace("'", "\\'"),
commit.date,
commit.author_email,
commit.author_name.replace("\\'", "'").replace("'", "\\'"),
commit.committer_email,
commit
.committer_name
.replace("\\'", "'")
.replace("'", "\\'"),
commit.repository_url
)[..]
}
// Remove the last `,`
let _ = raw_query.pop();
raw_query += " RETURNING *";
// TODO: write query with &commits and parameter. Need to implement
// ToSql trait for `Commit` model
// let statement = client.prepare(&query[..]).await?;
// client.query(&statement, &[&commits]
let statement = client.prepare(&raw_query[..]).await?;
let result = client
.query(&statement, &[])
.await?
.iter()
.map(|row| Commit::from_row_ref(row).unwrap())
.collect::<Vec<Commit>>();
Ok(result)
}
/// Returns a ranking of authors of his commits number
pub async fn most_authors(
pool: Pool,
) -> Result<Vec<CommitNumAuthor>, AppError> {
let client = get_client(pool.clone()).await.unwrap();
let statement = client.prepare(
"SELECT COUNT(hash) as num, author_email, author_name FROM commit
GROUP BY author_email, author_name ORDER BY COUNT(hash) DESC"
).await?;
let authors = client
.query(&statement, &[])
.await?
.iter()
.map(|row| CommitNumAuthor {
num: row.get(0),
author_email: row.get(1),
author_name: row.get(2),
})
.collect::<Vec<CommitNumAuthor>>();
Ok(authors)
}
}
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