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use chrono::naive::NaiveDateTime;
use diesel::prelude::*;
use super::schema::*;
use ::{Result, Error};
#[derive(Queryable, Identifiable, PartialEq, Debug)]
#[table_name="memes"]
pub struct Meme {
pub id: i32,
pub title: String,
pub content: Option<String>,
pub image_id: Option<i32>,
pub audio_id: Option<i32>,
pub metadata_id: i32,
}
impl Meme {
pub fn image(&self, conn: &PgConnection) -> Option<Result<Image>> {
self.image_id.map(|x: i32| images::table.filter(images::id.eq(x)).first(conn).map_err(Error::from))
}
pub fn audio(&self, conn: &PgConnection) -> Option<Result<Audio>> {
self.audio_id.map(|x: i32| audio::table.filter(audio::id.eq(x)).first(conn).map_err(Error::from))
}
}
#[derive(Insertable, PartialEq, Debug)]
#[table_name="memes"]
pub struct NewMeme {
pub title: String,
pub content: Option<String>,
pub image_id: Option<i32>,
pub audio_id: Option<i32>,
pub metadata_id: i32,
}
impl NewMeme {
pub fn save(mut self, conn: &PgConnection, by_user: u64) -> Result<Meme> {
let metadata = Metadata::create(conn, by_user)?;
self.metadata_id = metadata.id;
::diesel::insert_into(memes::table)
.values(&self)
.get_result::<Meme>(conn)
.map_err(Error::from)
}
}
#[derive(Queryable, Identifiable, PartialEq, Debug)]
#[table_name="audio"]
pub struct Audio {
pub id: i32,
pub data: Vec<u8>,
pub metadata_id: i32,
pub data_hash: Vec<u8>,
}
impl Audio {
pub fn create(conn: &PgConnection, data: Vec<u8>, by_user: u64) -> Result<i32> {
let mut data_hash = ::sha1::Sha1::new();
data_hash.update(&data);
let data_hash = data_hash.digest().bytes().to_vec();
let id = audio::table
.select(audio::id)
.filter(audio::data_hash.eq(&data_hash))
.get_results::<i32>(conn)?;
if let Some(id) = id.first() {
return Ok(*id);
}
let metadata = Metadata::create(conn, by_user)?;
let new_audio = NewAudio {
data,
data_hash,
metadata_id: metadata.id,
};
::diesel::insert_into(audio::table)
.values(&new_audio)
.returning(audio::id)
.get_result(conn)
.map_err(Error::from)
}
}
#[derive(Insertable, PartialEq, Debug)]
#[table_name="audio"]
pub struct NewAudio {
pub data: Vec<u8>,
pub metadata_id: i32,
pub data_hash: Vec<u8>,
}
#[derive(Queryable, Identifiable, PartialEq, Debug)]
#[table_name="images"]
pub struct Image {
pub id: i32,
pub data: Vec<u8>,
pub metadata_id: i32,
pub data_hash: Vec<u8>,
pub filename: String,
}
impl Image {
pub fn create(conn: &PgConnection, filename: &str, data: Vec<u8>, by_user: u64) -> Result<i32> {
let mut data_hash = ::sha1::Sha1::new();
data_hash.update(&data);
let data_hash = data_hash.digest().bytes().to_vec();
let id = images::table
.select(images::id)
.filter(images::data_hash.eq(&data_hash))
.get_results::<i32>(conn)?;
if let Some(id) = id.first() {
return Ok(*id);
}
let metadata = Metadata::create(conn, by_user)?;
let new_image = NewImage {
data,
data_hash,
filename: filename.to_owned(),
metadata_id: metadata.id,
};
::diesel::insert_into(images::table)
.values(&new_image)
.returning(images::id)
.get_result(conn)
.map_err(Error::from)
}
}
#[derive(Insertable, PartialEq, Debug)]
#[table_name="images"]
pub struct NewImage {
pub data: Vec<u8>,
pub metadata_id: i32,
pub data_hash: Vec<u8>,
pub filename: String,
}
#[derive(Queryable, Identifiable, PartialEq, Debug)]
#[table_name="metadata"]
pub struct Metadata {
pub id: i32,
pub created: NaiveDateTime,
pub created_by: i64,
}
impl Metadata {
pub fn create(conn: &PgConnection, by_user: u64) -> Result<Metadata> {
::diesel::insert_into(metadata::table)
.values(&NewMetadata {
created_by: by_user as i64,
})
.get_result::<Metadata>(conn)
.map_err(Error::from)
}
}
#[derive(Insertable, PartialEq, Debug)]
#[table_name="metadata"]
pub struct NewMetadata {
pub created_by: i64,
}
#[derive(Queryable, Identifiable, PartialEq, Debug)]
#[table_name="audit_records"]
pub struct AuditRecord {
pub id: i32,
pub updated: NaiveDateTime,
pub updated_by: i64,
pub metadata_id: i32,
}
impl AuditRecord {
pub fn create(conn: &PgConnection, metadata: i32, by_user: u64) -> Result<AuditRecord> {
::diesel::insert_into(audit_records::table)
.values(&NewAuditRecord {
updated_by: by_user as i64,
metadata_id: metadata,
})
.get_result::<AuditRecord>(conn)
.map_err(Error::from)
}
}
#[derive(Insertable, PartialEq, Debug)]
#[table_name="audit_records"]
pub struct NewAuditRecord {
pub updated_by: i64,
pub metadata_id: i32,
}
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