update

.gitignore

@@ -6,3 +6,8 @@ node_modules
 /result*
 .solid
 /typedoc
+
+
+# Added by cargo
+
+/target

Cargo.lock

@@ -0,0 +1,285 @@
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+
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+
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Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "panorama"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = "1.0.72"
+bincode = "1.3.3"
+dirs = "5.0.1"
+once_cell = "1.18.0"
+redb = "1.0.5"
+serde = { version = "1.0.171", features = ["derive"] }

flake.nix

@@ -39,6 +39,9 @@
 
         devShells = {
           default = pkgs.mkShell ({
+            allowUnfree = true;
+            permittedInsecurePackages = [ "openssl-1.1.1u" ];
+
             packages = with pkgs; [
               cargo-deny
               cargo-edit

src/db.rs

@@ -0,0 +1,63 @@
+use std::path::Path;
+
+use anyhow::Result;
+
+use crate::db_keys::nodes_by_id;
+
+pub struct PanoramaDb {
+  redb_db: redb::Database,
+}
+
+impl PanoramaDb {
+  pub fn open(path: impl AsRef<Path>) -> Result<Self> {
+    let redb_db = redb::Database::create(path)?;
+
+    Ok(Self { redb_db })
+  }
+
+  pub fn check(&mut self) -> Result<()> {
+    self.redb_db.check_integrity()?;
+    Ok(())
+  }
+
+  pub fn begin_read(&self) -> Result<ReadTransaction> {
+    let tx = self.redb_db.begin_read()?;
+    Ok(ReadTransaction { redb_tx: tx })
+  }
+
+  pub fn begin_write(&self) -> Result<WriteTransaction> {
+    let tx = self.redb_db.begin_write()?;
+    Ok(WriteTransaction { redb_tx: tx })
+  }
+}
+
+pub struct ReadTransaction<'db> {
+  redb_tx: redb::ReadTransaction<'db>,
+}
+
+impl<'db> ReadTransaction<'db> {}
+
+pub struct WriteTransaction<'db> {
+  redb_tx: redb::WriteTransaction<'db>,
+}
+
+pub struct CreateNodeOptions {
+  label: String,
+}
+
+impl<'db> WriteTransaction<'db> {
+  pub fn create_node(&self) -> Result<()> {
+    let mut table = self.redb_tx.open_table(*nodes_by_id())?;
+
+    // Create the actual node
+    table.insert((), ())?;
+
+    // Create metadata keys
+
+    Ok(())
+  }
+
+  pub fn commit(self) -> Result<()> {
+    self.redb_tx.commit().map_err(|err| err.into())
+  }
+}

src/db_keys.rs

@@ -0,0 +1,14 @@
+use once_cell::sync::OnceCell;
+use redb::TableDefinition;
+
+macro_rules! table_def {
+  ($str:ident, $key:ty, $val:ty) => {
+    pub fn $str() -> &'static TableDefinition<'static, $key, $val> {
+      static INSTANCE: OnceCell<TableDefinition<'static, $key, $val>> =
+        OnceCell::new();
+      INSTANCE.get_or_init(|| TableDefinition::new(stringify!($str)))
+    }
+  };
+}
+
+table_def!(nodes_by_id, (), ());

src/lib.rs

@@ -0,0 +1,5 @@
+#[macro_use]
+extern crate serde;
+
+pub mod db;
+pub mod db_keys;

src/main.rs

@@ -0,0 +1,17 @@
+use std::fs;
+
+use anyhow::Result;
+use panorama::db::PanoramaDb;
+
+fn main() -> Result<()> {
+  let local_data_dir = dirs::data_local_dir().unwrap();
+  let panorama_data_dir = local_data_dir.join("panorama");
+  fs::create_dir_all(&panorama_data_dir)?;
+  let database_file_path = panorama_data_dir.join("data.redb");
+
+  let database = PanoramaDb::open(database_file_path)?;
+
+  println!("Hello, world!");
+
+  Ok(())
+}