130 lines
3.5 KiB
Rust
130 lines
3.5 KiB
Rust
use crate::{
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limit_and_offset,
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source::{
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private_message::PrivateMessage,
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user::{UserAlias1, UserSafe, UserSafeAlias1, User_},
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},
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views::ViewToVec,
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MaybeOptional,
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ToSafe,
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};
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use diesel::{result::Error, *};
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use lemmy_db_schema::schema::{private_message, user_, user_alias_1};
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use serde::Serialize;
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#[derive(Debug, PartialEq, Serialize, Clone)]
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pub struct PrivateMessageView {
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pub private_message: PrivateMessage,
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pub creator: UserSafe,
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pub recipient: UserSafeAlias1,
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}
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type PrivateMessageViewTuple = (PrivateMessage, UserSafe, UserSafeAlias1);
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impl PrivateMessageView {
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pub fn read(conn: &PgConnection, private_message_id: i32) -> Result<Self, Error> {
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let (private_message, creator, recipient) = private_message::table
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.find(private_message_id)
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.inner_join(user_::table.on(private_message::creator_id.eq(user_::id)))
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.inner_join(user_alias_1::table.on(private_message::recipient_id.eq(user_alias_1::id)))
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.order_by(private_message::published.desc())
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.select((
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private_message::all_columns,
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User_::safe_columns_tuple(),
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UserAlias1::safe_columns_tuple(),
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))
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.first::<PrivateMessageViewTuple>(conn)?;
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Ok(PrivateMessageView {
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private_message,
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creator,
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recipient,
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})
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}
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}
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pub struct PrivateMessageQueryBuilder<'a> {
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conn: &'a PgConnection,
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recipient_id: i32,
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unread_only: bool,
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page: Option<i64>,
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limit: Option<i64>,
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}
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impl<'a> PrivateMessageQueryBuilder<'a> {
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pub fn create(conn: &'a PgConnection, recipient_id: i32) -> Self {
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PrivateMessageQueryBuilder {
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conn,
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recipient_id,
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unread_only: false,
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page: None,
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limit: None,
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}
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}
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pub fn unread_only(mut self, unread_only: bool) -> Self {
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self.unread_only = unread_only;
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self
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}
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pub fn page<T: MaybeOptional<i64>>(mut self, page: T) -> Self {
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self.page = page.get_optional();
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self
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}
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pub fn limit<T: MaybeOptional<i64>>(mut self, limit: T) -> Self {
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self.limit = limit.get_optional();
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self
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}
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pub fn list(self) -> Result<Vec<PrivateMessageView>, Error> {
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let mut query = private_message::table
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.inner_join(user_::table.on(private_message::creator_id.eq(user_::id)))
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.inner_join(user_alias_1::table.on(private_message::recipient_id.eq(user_alias_1::id)))
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.select((
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private_message::all_columns,
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User_::safe_columns_tuple(),
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UserAlias1::safe_columns_tuple(),
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))
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.into_boxed();
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// If its unread, I only want the ones to me
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if self.unread_only {
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query = query
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.filter(private_message::read.eq(false))
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.filter(private_message::recipient_id.eq(self.recipient_id));
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}
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// Otherwise, I want the ALL view to show both sent and received
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else {
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query = query.filter(
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private_message::recipient_id
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.eq(self.recipient_id)
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.or(private_message::creator_id.eq(self.recipient_id)),
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)
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}
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let (limit, offset) = limit_and_offset(self.page, self.limit);
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let res = query
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.filter(private_message::deleted.eq(false))
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.limit(limit)
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.offset(offset)
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.order_by(private_message::published.desc())
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.load::<PrivateMessageViewTuple>(self.conn)?;
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Ok(PrivateMessageView::to_vec(res))
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}
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}
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impl ViewToVec for PrivateMessageView {
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type DbTuple = PrivateMessageViewTuple;
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fn to_vec(pm: Vec<Self::DbTuple>) -> Vec<Self> {
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pm.iter()
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.map(|a| Self {
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private_message: a.0.to_owned(),
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creator: a.1.to_owned(),
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recipient: a.2.to_owned(),
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})
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.collect::<Vec<Self>>()
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}
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}
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