249 lines
8.7 KiB
Rust
249 lines
8.7 KiB
Rust
use anyhow::Result;
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use diesel::prelude::*;
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use diesel::query_dsl::BelongingToDsl;
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use crate::{
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models::{
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Conversation,
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Message,
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Participant,
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db::conversation::Record as ConversationRecord,
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db::participant::{
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ConversationParticipant,
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Record as ParticipantRecord,
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InsertableRecord as InsertableParticipantRecord
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},
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db::message::Record as MessageRecord,
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},
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schema,
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};
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pub struct Repository<'a> {
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connection: &'a mut SqliteConnection,
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}
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impl<'a> Repository<'a> {
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pub fn new(connection: &'a mut SqliteConnection) -> Self {
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Self { connection }
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}
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pub fn insert_conversation(&mut self, conversation: Conversation) -> Result<()> {
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use crate::schema::conversations::dsl::*;
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use crate::schema::participants::dsl::*;
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use crate::schema::conversation_participants::dsl::*;
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let (db_conversation, db_participants) = conversation.into();
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diesel::replace_into(conversations)
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.values(&db_conversation)
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.execute(self.connection)?;
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diesel::replace_into(participants)
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.values(&db_participants)
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.execute(self.connection)?;
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// Sqlite backend doesn't support batch insert, so we have to do this manually
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for participant in db_participants {
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let pid = participants
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.select(schema::participants::id)
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.filter(schema::participants::display_name.eq(&participant.display_name))
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.first::<i32>(self.connection)?;
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diesel::replace_into(conversation_participants)
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.values((
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conversation_id.eq(&db_conversation.id),
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participant_id.eq(pid),
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))
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.execute(self.connection)?;
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}
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Ok(())
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}
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pub fn get_conversation_by_guid(&mut self, match_guid: &str) -> Result<Option<Conversation>> {
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use crate::schema::conversations::dsl::*;
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use crate::schema::participants::dsl::*;
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let result = conversations
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.find(match_guid)
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.first::<ConversationRecord>(self.connection)
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.optional()?;
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if let Some(conversation) = result {
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let db_participants = ConversationParticipant::belonging_to(&conversation)
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.inner_join(participants)
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.select(ParticipantRecord::as_select())
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.load::<ParticipantRecord>(self.connection)?;
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let mut model_conversation: Conversation = conversation.into();
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model_conversation.participants = db_participants.into_iter().map(|p| p.into()).collect();
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return Ok(Some(model_conversation));
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}
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Ok(None)
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}
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pub fn all_conversations(&mut self) -> Result<Vec<Conversation>> {
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use crate::schema::conversations::dsl::*;
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use crate::schema::participants::dsl::*;
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let db_conversations = conversations
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.load::<ConversationRecord>(self.connection)?;
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let mut result = Vec::new();
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for db_conversation in db_conversations {
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let db_participants = ConversationParticipant::belonging_to(&db_conversation)
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.inner_join(participants)
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.select(ParticipantRecord::as_select())
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.load::<ParticipantRecord>(self.connection)?;
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let mut model_conversation: Conversation = db_conversation.into();
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model_conversation.participants = db_participants.into_iter().map(|p| p.into()).collect();
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result.push(model_conversation);
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}
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Ok(result)
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}
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pub fn insert_message(&mut self, conversation_guid: &str, message: Message) -> Result<()> {
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use crate::schema::messages::dsl::*;
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use crate::schema::conversation_messages::dsl::*;
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// Handle participant if message has a remote sender
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let sender = message.sender.clone();
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let mut db_message: MessageRecord = message.into();
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db_message.sender_participant_id = self.get_or_create_participant(&sender);
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diesel::replace_into(messages)
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.values(&db_message)
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.execute(self.connection)?;
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diesel::replace_into(conversation_messages)
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.values((
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conversation_id.eq(conversation_guid),
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message_id.eq(&db_message.id),
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))
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.execute(self.connection)?;
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Ok(())
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}
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pub fn insert_messages(&mut self, conversation_guid: &str, in_messages: Vec<Message>) -> Result<()> {
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use crate::schema::messages::dsl::*;
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use crate::schema::conversation_messages::dsl::*;
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// Local insertable struct for the join table
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#[derive(Insertable)]
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#[diesel(table_name = crate::schema::conversation_messages)]
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struct InsertableConversationMessage {
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pub conversation_id: String,
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pub message_id: String,
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}
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if in_messages.is_empty() {
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return Ok(());
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}
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// Build the collections of insertable records
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let mut db_messages: Vec<MessageRecord> = Vec::with_capacity(in_messages.len());
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let mut conv_msg_records: Vec<InsertableConversationMessage> = Vec::with_capacity(in_messages.len());
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for message in in_messages {
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// Handle participant if message has a remote sender
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let sender = message.sender.clone();
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let mut db_message: MessageRecord = message.into();
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db_message.sender_participant_id = self.get_or_create_participant(&sender);
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conv_msg_records.push(InsertableConversationMessage {
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conversation_id: conversation_guid.to_string(),
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message_id: db_message.id.clone(),
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});
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db_messages.push(db_message);
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}
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// Batch insert or replace messages
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diesel::replace_into(messages)
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.values(&db_messages)
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.execute(self.connection)?;
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// Batch insert the conversation-message links
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diesel::replace_into(conversation_messages)
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.values(&conv_msg_records)
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.execute(self.connection)?;
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Ok(())
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}
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pub fn get_messages_for_conversation(&mut self, conversation_guid: &str) -> Result<Vec<Message>> {
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use crate::schema::messages::dsl::*;
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use crate::schema::conversation_messages::dsl::*;
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use crate::schema::participants::dsl::*;
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let message_records = conversation_messages
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.filter(conversation_id.eq(conversation_guid))
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.inner_join(messages)
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.select(MessageRecord::as_select())
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.order_by(schema::messages::date.asc())
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.load::<MessageRecord>(self.connection)?;
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let mut result = Vec::new();
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for message_record in message_records {
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let mut message: Message = message_record.clone().into();
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// If there's a sender_participant_id, load the participant info
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if let Some(pid) = message_record.sender_participant_id {
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let participant = participants
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.find(pid)
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.first::<ParticipantRecord>(self.connection)?;
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message.sender = participant.into();
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}
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result.push(message);
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}
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Ok(result)
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}
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// Helper function to get the last inserted row ID
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// This is a workaround since the Sqlite backend doesn't support `RETURNING`
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// Huge caveat with this is that it depends on whatever the last insert was, prevents concurrent inserts.
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fn last_insert_id(&mut self) -> Result<i32> {
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Ok(diesel::select(diesel::dsl::sql::<diesel::sql_types::Integer>("last_insert_rowid()"))
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.get_result(self.connection)?)
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}
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fn get_or_create_participant(&mut self, participant: &Participant) -> Option<i32> {
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match participant {
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Participant::Me => None,
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Participant::Remote { display_name: p_name, .. } => {
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use crate::schema::participants::dsl::*;
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let existing_participant = participants
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.filter(display_name.eq(p_name))
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.first::<ParticipantRecord>(self.connection)
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.optional()
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.unwrap();
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if let Some(participant) = existing_participant {
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return Some(participant.id);
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}
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let participant_record = InsertableParticipantRecord {
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display_name: Some(participant.display_name()),
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is_me: false,
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};
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diesel::insert_into(participants)
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.values(&participant_record)
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.execute(self.connection)
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.unwrap();
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self.last_insert_id().ok()
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}
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}
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}
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}
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