Db, direct interface, errors, and migrations

Adds a migration for an initial schema. Adds sqlx-cli to the flake
so that I use those migrations easily.

adds an UNTESTED "direct" interface, which should make writing ingestors
easier, and be very easy for spoor lexicons. It will probably also be
easy for other lexicons if they can fit into the Activity -> Session ->
Content interface.

Adds errors because I needed errors.

Since this is a library, and as you can see there are no tests, that
means that everything is *untested* which is fine because I want a MVP
not a stable app. For now.

db/Cargo.toml

@@ -6,5 +6,6 @@ edition = "2024"
 [dependencies]
 async-trait.workspace = true
 atproto = { workspace = true, features = ["sqlx-support"] }
-sqlx = { version = "0.8.6", features = ["postgres", "runtime-tokio"] }
+sqlx.workspace = true
+thiserror.workspace = true
 tokio.workspace = true

db/migrations/20250612223204_initial_schema.sql

@@ -0,0 +1,45 @@
+-- Add migration script here
+
+CREATE EXTENSION IF NOT EXISTS pg_trgm;
+
+CREATE TABLE actor (
+  did VARCHAR PRIMARY KEY,
+  handle VARCHAR UNIQUE,
+  indexed_at VARCHAR NOT NULL
+);
+CREATE INDEX actor_handle_trgm_idx ON actor USING gist (handle gist_trgm_ops);
+
+CREATE TABLE session (
+  uri VARCHAR PRIMARY KEY,
+  cid VARCHAR NOT NULL,
+  owner VARCHAR NOT NULL,
+
+  content VARCHAR NOT NULL,
+  contentcid VARCHAR NOT NULL,
+  label VARCHAR,
+  -- Participants in participant
+
+  created_at VARCHAR,
+  indexed_at VARCHAR NOT NULL,
+  sort_at VARCHAR GENERATED ALWAYS AS (LEAST(created_at,indexed_at)) STORED NOT NULL
+);
+
+CREATE TABLE activity (
+  uri VARCHAR PRIMARY KEY,
+  cid VARCHAR NOT NULL,
+
+  session VARCHAR,
+  sessioncid VARCHAR,
+  -- Progress in progress
+
+  performed_at VARCHAR,
+  created_at VARCHAR,
+  indexed_at VARCHAR NOT NULL,
+  sort_at VARCHAR GENERATED ALWAYS AS (LEAST(created_at,indexed_at)) STORED NOT NULL
+);
+
+CREATE TABLE participant (
+  participantdid VARCHAR NOT NULL,
+  sessionuri VARCHAR NOT NULL,
+  role VARCHAR NOT NULL
+);

db/src/connection.rs

@@ -1,99 +0,0 @@
-use sqlx::{
-  query,
-  Database,
-  Pool,
-  Postgres,
-  pool::PoolOptions,
-  postgres::{
-    PgConnectOptions,
-    PgSslMode,
-  },
-  Result,
-};
-use std::string::ToString;
-
-pub struct Db<Dbimp: Database> {
-  pool: Pool<Dbimp>
-}
-
-#[non_exhaustive]
-enum Role {
-  Owner,
-  Participant
-}
-
-impl ToString for Role {
-  fn to_string(&self) -> String {
-    match *self {
-      Role::Owner => "owner".to_string(),
-      Role::Participant => "participant".to_string(),
-    }
-  }
-}
-
-pub struct Session {
-  sessionuri: Uri,
-  label: Option<String>,
-  participants: Vec<Participant>,
-}
-
-impl Db<Postgres> {
-  async fn connect() -> Result<Self> {
-    let conn = PgConnectOptions::new()
-      .host("localhost")
-      .port(5432)
-      .username("postgres")
-      .password("062217")
-      .database("anisky")
-      .ssl_mode(PgSslMode::Disable);
-
-    let pool = match PoolOptions::new().connect_with(conn).await {
-      Ok(p) => p,
-      Err(e) => return Err(e),
-    };
-
-    Ok(Db { pool })
-  }
-  //
-  // pub async fn add_user(&self, user: &User) -> Result<()> {
-  //   query!(r#"
-  //       INSERT INTO users(userdid, handle) VALUES ($1, $2)
-  //     "#,
-  //     user.userdid, user.handle
-  //   ).execute(self.pool).await?;
-  //   Ok(())
-  // }
-  //
-  // pub async fn add_session(&self, session: &Session) -> Result<()> {
-  //   let mut transaction = self.pool.begin().await?;
-  //
-  //   query!(r#"
-  //       INSERT INTO sessions(sessionuri, label) VALUES ($1, $2)
-  //     "#,
-  //     session.sessionuri, session.label
-  //   ).execute(&mut *transaction).await?;
-  //   
-  //   for participant in session.participants {
-  //     query!(r#"
-  //         INSERT INTO participants(sessionuri, userdid, role) VALUES ($1, $2, $3)
-  //       "#,
-  //       session.sessionuri, participant.userdid, participant.role.to_string()
-  //     ).execute(&mut *transaction).await?;
-  //   }
-  //
-  //   transaction.commit().await
-  // }
-  //
-  // pub async fn add_participant(&self, session: Session, 
-  //   participant: Participant) -> Result<Session> {
-  //   query!(r#"
-  //       INSERT INTO participants(sessionuri, userdid, role) VALUES ($1, $2, $3)
-  //     "#,
-  //     session.sessionuri, participant.userdid, participant.role.to_string()
-  //   ).execute(self.pool).await?;
-  //   
-  //   session.participants.push(participant);
-  //
-  //   Ok(session)
-  // }
-}

db/src/error.rs

@@ -0,0 +1,10 @@
+#[non_exhaustive]
+#[derive(Debug, thiserror::Error)]
+pub enum Error {
+  #[error("Database Implementation Error: {0}")]
+  Backend(#[from] sqlx::Error),
+  #[error("AT Protocol Implementation Error: {0}")]
+  Atproto(#[from] atproto::error::Error),
+}
+
+pub type Result<T> = std::result::Result<T, Error>;

db/src/interfaces.rs

@@ -1,15 +0,0 @@
-use atproto::{
-    Did,
-    Uri,
-};
-
-pub struct User {
-  userdid: Did,
-  handle: Handle,
-}
-
-struct Participant {
-  participantdid: Did,
-  role: Role,
-}
-

db/src/interfaces/direct.rs

@@ -0,0 +1,2 @@
+pub mod types;
+pub mod functions;

db/src/interfaces/direct/functions.rs

@@ -0,0 +1,116 @@
+use atproto::types::{
+  Datetime,
+  Uri,
+};
+use crate::{
+  Error,
+  interfaces::direct::types::{
+    Activity,
+    Participant,
+    Session, 
+    User
+  },
+};
+use sqlx::{
+  Transaction,
+  Postgres,
+  PgPool,
+  query,
+};
+
+pub async fn ingest_activity(
+  db: PgPool, activity: Activity
+) -> Result<(), Error> {
+  let mut transaction = db.begin().await?;
+  write_activity(&mut transaction, activity).await?;
+  transaction.commit().await.map_err(Error::Backend)
+}
+
+pub async fn ingest_session(
+  db: PgPool, session: Session
+) -> Result<(), Error>  {
+  let mut transaction = db.begin().await?;
+  write_session(&mut transaction, session).await?;
+  transaction.commit().await.map_err(Error::Backend)
+}
+
+async fn write_activity(
+  tr: &mut Transaction<'_, Postgres>, activity: Activity
+) -> Result<(), Error> {
+  let (sessionuri, sessioncid) = match activity.session {
+    Some(sr) => {
+      let (session, cid) = sr.extract_content();
+      let sessionuri = session.uri.to_string();
+      write_session(tr, session).await?;
+      (sessionuri, cid.to_string())
+    }
+    None => ("".to_string(), "".to_string()),
+  };
+
+  query!(r#"
+    INSERT INTO 
+    activity(uri, cid, session, sessioncid, performed_at, created_at, indexed_at)
+    VALUES ($1, $2, $3, $4, $5, $6, $7)
+  "#,
+    &activity.uri.to_string(),
+    &activity.cid.to_string(),
+    sessionuri,
+    sessioncid,
+    activity.performed_at.map(|dt| dt.to_string()),
+    activity.created_at.map(|dt| dt.to_string()),
+    &Datetime::now()?.to_string(),
+  ).execute(&mut **tr).await?;
+
+  // TODO: Handle Progress
+
+  Ok(())
+}
+
+
+async fn write_session(
+  tr: &mut Transaction<'_, Postgres>, session: Session
+) -> Result<(), Error> {
+  query!(r#"
+    INSERT INTO 
+    session(uri, cid, owner, content, contentcid, label, created_at, indexed_at)
+    VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
+  "#,
+    &session.uri.to_string(), 
+    &session.cid.to_string(), 
+    &session.uri.authority_as_did().to_string(),
+    &session.content.get_content().to_string(),
+    &session.content.get_cid().to_string(),
+    session.label,
+    session.created_at.map(|dt| dt.to_string()), 
+    &Datetime::now()?.to_string()
+  ).execute(&mut **tr).await?;
+
+  if let Some(participants) = session.other_participants {
+    for participant in participants {
+      write_participant(tr, &participant, &session.uri).await?
+    }
+  }
+
+  Ok(())
+}
+
+async fn write_participant(
+  tr: &mut Transaction<'_, Postgres>, participant: &Participant, sessionuri: &Uri
+) -> Result<(), Error> {
+  let (participant_type, user): (String, &User) = match participant {
+    Participant::Owner(user) => ("Owner".to_string(), user),
+    Participant::Added(user) => ("Participant".to_string(), user),
+  };
+
+  query!(r#"
+    INSERT INTO 
+    participant(participantdid, sessionuri, role)
+    VALUES ($1, $2, $3)
+  "#, 
+    user.did.to_string(),
+    sessionuri.to_string(),
+    participant_type,
+  ).execute(&mut **tr).await?;
+
+  Ok(())
+}

db/src/interfaces/direct/types.rs

@@ -0,0 +1,58 @@
+use atproto::types::{
+  Cid,
+  Uri,
+  Datetime,
+  Did,
+  StrongRef,
+  Handle,
+};
+use std::fmt::{Display, Formatter, Result as FmtResult};
+
+pub struct Activity {
+  pub uri: Uri,
+  pub cid: Cid,
+
+  pub session: Option<StrongRef<Session>>,
+  pub progress: Option<Progress>,
+  pub performed_at: Option<Datetime>,
+  pub created_at: Option<Datetime>,
+}
+
+pub struct Session {
+  pub uri: Uri,
+  pub cid: Cid,
+
+  pub content: StrongRef<Content>,
+  pub label: Option<String>,
+  pub created_at: Option<Datetime>,
+  pub other_participants: Option<Vec<Participant>>,
+}
+
+pub struct User {
+  pub did: Did,
+  pub handle: Option<Handle>,
+}
+
+#[non_exhaustive]
+pub enum Participant {
+  Owner(User),
+  Added(User),
+}
+
+#[non_exhaustive]
+pub enum Content {
+  UnknownContent
+}
+
+impl Display for Content {
+  fn fmt(&self, f: &mut Formatter<'_>) -> FmtResult {
+    write!(f, "{}", match self {
+      Content::UnknownContent => "UnknownContentType",
+    })
+  }
+}
+
+#[non_exhaustive]
+pub enum Progress {
+  UnknownProgress
+}

db/src/interfaces/mod.rs

@@ -0,0 +1 @@
+pub mod direct;

db/src/lib.rs

@@ -1 +1,4 @@
-pub struct db;
+pub mod interfaces;
+pub mod error;
+
+pub use crate::error::Error;