reorg: split repo / database so settings can use db connection as well

kordophone-db/src/repository.rs

@@ -0,0 +1,204 @@
+use anyhow::Result;
+use diesel::prelude::*;
+use diesel::query_dsl::BelongingToDsl;
+
+use std::sync::Arc;
+
+use crate::{
+    database::Database,
+    models::{
+        Conversation,
+        Message,
+        Participant,
+        db::conversation::Record as ConversationRecord,
+        db::participant::{
+            ConversationParticipant, 
+            Record as ParticipantRecord, 
+            InsertableRecord as InsertableParticipantRecord
+        },
+        db::message::Record as MessageRecord,
+    },
+    schema,
+};
+
+pub struct Repository<'a> {
+    db: &'a mut Database,
+}
+
+impl<'a> Repository<'a> {
+    pub fn new(db: &'a mut Database) -> Self {
+        Self { db }
+    }
+
+    pub fn insert_conversation(&mut self, conversation: Conversation) -> Result<()> {
+        use crate::schema::conversations::dsl::*;
+        use crate::schema::participants::dsl::*;
+        use crate::schema::conversation_participants::dsl::*;
+
+        let (db_conversation, db_participants) = conversation.into();
+
+        diesel::replace_into(conversations)
+            .values(&db_conversation)
+            .execute(&mut self.db.connection)?;
+
+        diesel::replace_into(participants)
+            .values(&db_participants)
+            .execute(&mut self.db.connection)?;
+
+        // Sqlite backend doesn't support batch insert, so we have to do this manually
+        for participant in db_participants {
+            let pid = participants
+                .select(schema::participants::id)
+                .filter(schema::participants::display_name.eq(&participant.display_name))
+                .first::<i32>(&mut self.db.connection)?;
+
+            diesel::replace_into(conversation_participants)
+                .values((
+                    conversation_id.eq(&db_conversation.id),
+                    participant_id.eq(pid),
+                ))
+                .execute(&mut self.db.connection)?;
+        }
+
+        Ok(())
+    }
+
+    pub fn get_conversation_by_guid(&mut self, match_guid: &str) -> Result<Option<Conversation>> {
+        use crate::schema::conversations::dsl::*;
+        use crate::schema::participants::dsl::*;
+
+        let result = conversations
+            .find(match_guid)
+            .first::<ConversationRecord>(&mut self.db.connection)
+            .optional()?;
+
+        if let Some(conversation) = result {
+            let db_participants = ConversationParticipant::belonging_to(&conversation)
+                .inner_join(participants)
+                .select(ParticipantRecord::as_select())
+                .load::<ParticipantRecord>(&mut self.db.connection)?;
+
+            let mut model_conversation: Conversation = conversation.into();
+            model_conversation.participants = db_participants.into_iter().map(|p| p.into()).collect();
+
+            return Ok(Some(model_conversation));
+        }
+
+        Ok(None)
+    }
+
+    pub fn all_conversations(&mut self) -> Result<Vec<Conversation>> {
+        use crate::schema::conversations::dsl::*;
+        use crate::schema::participants::dsl::*;
+
+        let db_conversations = conversations
+            .load::<ConversationRecord>(&mut self.db.connection)?;
+
+        let mut result = Vec::new();
+        for db_conversation in db_conversations {
+            let db_participants = ConversationParticipant::belonging_to(&db_conversation)
+                .inner_join(participants)
+                .select(ParticipantRecord::as_select())
+                .load::<ParticipantRecord>(&mut self.db.connection)?;
+
+            let mut model_conversation: Conversation = db_conversation.into();
+            model_conversation.participants = db_participants.into_iter().map(|p| p.into()).collect();
+
+            result.push(model_conversation);
+        }
+
+        Ok(result)
+    }
+
+    pub fn insert_message(&mut self, conversation_guid: &str, message: Message) -> Result<()> {
+        use crate::schema::messages::dsl::*;
+        use crate::schema::conversation_messages::dsl::*;
+
+        // Handle participant if message has a remote sender
+        let sender = message.sender.clone();
+        let mut db_message: MessageRecord = message.into();
+        db_message.sender_participant_id = self.get_or_create_participant(&sender);
+
+        diesel::replace_into(messages)
+            .values(&db_message)
+            .execute(&mut self.db.connection)?;
+
+        diesel::replace_into(conversation_messages)
+            .values((
+                conversation_id.eq(conversation_guid),
+                message_id.eq(&db_message.id),
+            ))
+            .execute(&mut self.db.connection)?;
+
+        Ok(())
+    }
+
+    pub fn get_messages_for_conversation(&mut self, conversation_guid: &str) -> Result<Vec<Message>> {
+        use crate::schema::messages::dsl::*;
+        use crate::schema::conversation_messages::dsl::*;
+        use crate::schema::participants::dsl::*;
+
+        let message_records = conversation_messages
+            .filter(conversation_id.eq(conversation_guid))
+            .inner_join(messages)
+            .select(MessageRecord::as_select())
+            .order_by(schema::messages::date.asc())
+            .load::<MessageRecord>(&mut self.db.connection)?;
+
+        let mut result = Vec::new();
+        for message_record in message_records {
+            let mut message: Message = message_record.clone().into();
+            
+            // If there's a sender_participant_id, load the participant info
+            if let Some(pid) = message_record.sender_participant_id {
+                let participant = participants
+                    .find(pid)
+                    .first::<ParticipantRecord>(&mut self.db.connection)?;
+                message.sender = participant.into();
+            }
+
+            result.push(message);
+        }
+
+        Ok(result)
+    }
+
+    // Helper function to get the last inserted row ID
+    // This is a workaround since the Sqlite backend doesn't support `RETURNING`
+    // Huge caveat with this is that it depends on whatever the last insert was, prevents concurrent inserts.
+    fn last_insert_id(&mut self) -> Result<i32> {
+        Ok(diesel::select(diesel::dsl::sql::<diesel::sql_types::Integer>("last_insert_rowid()"))
+            .get_result(&mut self.db.connection)?)
+    }
+
+    fn get_or_create_participant(&mut self, participant: &Participant) -> Option<i32> {
+        match participant {
+            Participant::Me => None,
+            Participant::Remote { display_name: p_name, .. } => {
+                use crate::schema::participants::dsl::*;
+
+                let existing_participant = participants
+                    .filter(display_name.eq(p_name))
+                    .first::<ParticipantRecord>(&mut self.db.connection)
+                    .optional()
+                    .unwrap();
+
+                if let Some(participant) = existing_participant {
+                    return Some(participant.id);
+                }
+
+                let participant_record = InsertableParticipantRecord {
+                    display_name: Some(participant.display_name()),
+                    is_me: false,
+                };
+
+                diesel::insert_into(participants)
+                    .values(&participant_record)
+                    .execute(&mut self.db.connection)
+                    .unwrap();
+
+                self.last_insert_id().ok()
+            }
+        }
+    }
+}