1 files changed, 137 insertions, 0 deletions
diff --git a/adenosine-pds/src/db.rs b/adenosine-pds/src/db.rs
new file mode 100644
index 0000000..1d6d4ed
--- /dev/null
+++ b/adenosine-pds/src/db.rs
@@ -0,0 +1,137 @@
+use crate::AtpSession;
+/// ATP database (as distinct from blockstore)
+use anyhow::{anyhow, Result};
+use lazy_static::lazy_static;
+use rusqlite::{params, Connection};
+use rusqlite_migration::{Migrations, M};
+use serde_json::Value;
+use std::path::PathBuf;
+use std::str::FromStr;
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn migrations_test() {
+        assert!(MIGRATIONS.validate().is_ok());
+    }
+}
+
+lazy_static! {
+    static ref MIGRATIONS: Migrations<'static> =
+        Migrations::new(vec![M::up(include_str!("atp_db.sql")),]);
+}
+
+#[derive(Debug)]
+pub struct AtpDatabase {
+    conn: Connection,
+}
+
+impl AtpDatabase {
+    pub fn open(path: &PathBuf) -> Result<Self> {
+        let mut conn = Connection::open(path)?;
+        MIGRATIONS.to_latest(&mut conn)?;
+        // any pragma would happen here
+        Ok(AtpDatabase { conn })
+    }
+
+    /// temporary database, eg for tests.
+    ///
+    /// TODO: should create a tmp file on ramdisk (/var/tmp?) instead of opening an in-memory
+    /// database. in-memory database can't be used with multiple connections
+    pub fn open_ephemeral() -> Result<Self> {
+        let mut conn = Connection::open_in_memory()?;
+        MIGRATIONS.to_latest(&mut conn)?;
+        // any pragma would happen here
+        Ok(AtpDatabase { conn })
+    }
+
+    /// Creates an entirely new connection to the same database
+    ///
+    /// Skips re-running migrations.
+    ///
+    /// Fails for ephemeral databases.
+    pub fn new_connection(&self) -> Result<Self> {
+        // TODO: let path = std::path::PathBuf::from(self.conn.path().ok_or(Err(anyhow!("expected real database")))?);
+        let path = std::path::PathBuf::from(self.conn.path().expect("expected real database"));
+        let conn = Connection::open(path)?;
+        Ok(AtpDatabase { conn })
+    }
+
+    pub fn get_record(&mut self, did: &str, collection: &str, tid: &str) -> Result<Value> {
+        let mut stmt = self.conn.prepare_cached(
+            "SELECT record_json FROM record WHERE did = ?1 collection = ?2 tid = ?3",
+        )?;
+        Ok(stmt.query_row(params!(did, collection, tid), |row| {
+            row.get(0).map(|v: String| Value::from_str(&v))
+        })??)
+    }
+
+    pub fn get_record_list(&mut self, did: &str, collection: &str) -> Result<Vec<String>> {
+        let mut stmt = self
+            .conn
+            .prepare_cached("SELECT tid FROM record WHERE did = ?1 collection = ?2")?;
+        let ret = stmt
+            .query_and_then(params!(did, collection), |row| {
+                let v: String = row.get(0)?;
+                Ok(v)
+            })?
+            .collect();
+        ret
+    }
+
+    pub fn get_collection_list(&mut self, did: &str) -> Result<Vec<String>> {
+        let mut stmt = self
+            .conn
+            .prepare_cached("SELECT collection FROM record WHERE did = ?1 GROUP BY collection")?;
+        let ret = stmt
+            .query_and_then(params!(did), |row| {
+                let v: String = row.get(0)?;
+                Ok(v)
+            })?
+            .collect();
+        ret
+    }
+
+    pub fn create_account(
+        &mut self,
+        username: &str,
+        password: &str,
+        email: &str,
+    ) -> Result<AtpSession> {
+        // TODO: validate email (regex?)
+        // TODO: validate username
+        // TODO: generate and store signing key
+        // TODO: generate plc did (randomly for now?)
+        // TODO: insert did_doc
+        // TODO: also need to initialize repo with... profile?
+        {
+            let password_bcrypt = bcrypt::hash(password, bcrypt::DEFAULT_COST)?;
+            let signing_key = "key:TODO";
+            let did = "did:TODO";
+            let mut stmt = self
+                .conn
+                .prepare_cached("INSERT INTO account (username, password_bcrypt, email, did, signing_key) VALUES (?1, ?2, ?3, ?4, ?5)")?;
+            stmt.execute(params!(username, password_bcrypt, email, did, signing_key))?;
+        }
+        self.create_session(username, password)
+    }
+
+    pub fn create_session(&mut self, username: &str, password: &str) -> Result<AtpSession> {
+        let mut stmt = self
+            .conn
+            .prepare_cached("SELECT password_bcrypt FROM account WHERE username = ?1")?;
+        let password_bcrypt: String = stmt.query_row(params!(username), |row| row.get(0))?;
+        if !bcrypt::verify(password, &password_bcrypt)? {
+            return Err(anyhow!("password did not match"));
+        }
+        // TODO: generate JWT
+        // TODO: insert session wtih JWT
+        Ok(AtpSession {
+            name: username.to_string(),
+            did: "did:TODO".to_string(),
+            jwt: "jwt:TODO".to_string(),
+        })
+    }
+}