Open and close sqlite db properly

Cargo.lock

@@ -2,6 +2,17 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "ahash"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fcb51a0695d8f838b1ee009b3fbf66bda078cd64590202a864a8f3e8c4315c47"
+dependencies = [
+ "getrandom",
+ "once_cell",
+ "version_check",
+]
+
 [[package]]
 name = "aho-corasick"
 version = "0.7.18"
@@ -176,7 +187,9 @@ dependencies = [
  "async-trait",
  "chrono",
  "crossterm",
+ "directories",
  "parking_lot",
+ "rusqlite",
  "tokio",
  "toss",
 ]
@@ -244,6 +257,26 @@ dependencies = [
  "crypto-common",
 ]
 
+[[package]]
+name = "directories"
+version = "4.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f51c5d4ddabd36886dd3e1438cb358cdcb0d7c499cb99cb4ac2e38e18b5cb210"
+dependencies = [
+ "dirs-sys",
+]
+
+[[package]]
+name = "dirs-sys"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b1d1d91c932ef41c0f2663aa8b0ca0342d444d842c06914aa0a7e352d0bada6"
+dependencies = [
+ "libc",
+ "redox_users",
+ "winapi",
+]
+
 [[package]]
 name = "env_logger"
 version = "0.9.0"
@@ -257,6 +290,18 @@ dependencies = [
  "termcolor",
 ]
 
+[[package]]
+name = "fallible-iterator"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4443176a9f2c162692bd3d352d745ef9413eec5782a80d8fd6f8a1ac692a07f7"
+
+[[package]]
+name = "fallible-streaming-iterator"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7360491ce676a36bf9bb3c56c1aa791658183a54d2744120f27285738d90465a"
+
 [[package]]
 name = "fnv"
 version = "1.0.7"
@@ -383,6 +428,24 @@ dependencies = [
  "wasi 0.10.0+wasi-snapshot-preview1",
 ]
 
+[[package]]
+name = "hashbrown"
+version = "0.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ab5ef0d4909ef3724cc8cce6ccc8572c5c817592e9285f5464f8e86f8bd3726e"
+dependencies = [
+ "ahash",
+]
+
+[[package]]
+name = "hashlink"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7249a3129cbc1ffccd74857f81464a323a152173cdb134e0fd81bc803b29facf"
+dependencies = [
+ "hashbrown",
+]
+
 [[package]]
 name = "hermit-abi"
 version = "0.1.19"
@@ -462,6 +525,16 @@ version = "0.2.126"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "349d5a591cd28b49e1d1037471617a32ddcda5731b99419008085f72d5a53836"
 
+[[package]]
+name = "libsqlite3-sys"
+version = "0.24.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "898745e570c7d0453cc1fbc4a701eb6c662ed54e8fec8b7d14be137ebeeb9d14"
+dependencies = [
+ "pkg-config",
+ "vcpkg",
+]
+
 [[package]]
 name = "lock_api"
 version = "0.4.7"
@@ -593,6 +666,12 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
+[[package]]
+name = "pkg-config"
+version = "0.3.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1df8c4ec4b0627e53bdf214615ad287367e482558cf84b109250b37464dc03ae"
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.16"
@@ -656,6 +735,17 @@ dependencies = [
  "bitflags",
 ]
 
+[[package]]
+name = "redox_users"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b033d837a7cf162d7993aded9304e30a83213c648b6e389db233191f891e5c2b"
+dependencies = [
+ "getrandom",
+ "redox_syscall",
+ "thiserror",
+]
+
 [[package]]
 name = "regex"
 version = "1.5.6"
@@ -688,6 +778,21 @@ dependencies = [
  "winapi",
 ]
 
+[[package]]
+name = "rusqlite"
+version = "0.27.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85127183a999f7db96d1a976a309eebbfb6ea3b0b400ddd8340190129de6eb7a"
+dependencies = [
+ "bitflags",
+ "fallible-iterator",
+ "fallible-streaming-iterator",
+ "hashlink",
+ "libsqlite3-sys",
+ "memchr",
+ "smallvec",
+]
+
 [[package]]
 name = "rustls"
 version = "0.20.6"
@@ -1128,6 +1233,12 @@ version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09cc8ee72d2a9becf2f2febe0205bbed8fc6615b7cb429ad062dc7b7ddd036a9"
 
+[[package]]
+name = "vcpkg"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "accd4ea62f7bb7a82fe23066fb0957d48ef677f6eeb8215f372f52e48bb32426"
+
 [[package]]
 name = "version_check"
 version = "0.9.4"

cove-tui/Cargo.toml

@@ -8,6 +8,8 @@ anyhow = "1.0.57"
 async-trait = "0.1.56"
 chrono = "0.4.19"
 crossterm = "0.23.2"
+directories = "4.0.1"
 parking_lot = "0.12.1"
+rusqlite = "0.27.0"
 tokio = { version = "1.19.2", features = ["full"] }
 toss = { git = "https://github.com/Garmelon/toss.git", rev = "333cf74fba56080043a13b9f55c0b62695e2fa4a" }

cove-tui/src/main.rs

@@ -3,14 +3,22 @@
 mod chat;
 mod store;
 mod ui;
+mod vault;
 
+use directories::ProjectDirs;
 use toss::terminal::Terminal;
 use ui::Ui;
 
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
+    let dirs = ProjectDirs::from("de", "plugh", "cove").expect("unable to determine directories");
+    println!("Data dir: {}", dirs.data_dir().to_string_lossy());
+
+    let vault = vault::launch(&dirs.data_dir().join("vault.db"))?;
     let mut terminal = Terminal::new()?;
     // terminal.set_measuring(true);
+
     Ui::run(&mut terminal).await?;
+    vault.close().await;
     Ok(())
 }

cove-tui/src/vault.rs

@@ -0,0 +1,44 @@
+use std::path::Path;
+use std::{fs, thread};
+
+use rusqlite::Connection;
+use tokio::sync::{mpsc, oneshot};
+
+enum Request {
+    Close(oneshot::Sender<()>),
+    Nop,
+}
+
+pub struct Vault {
+    tx: mpsc::Sender<Request>,
+}
+
+impl Vault {
+    pub async fn close(&self) {
+        let (tx, rx) = oneshot::channel();
+        let _ = self.tx.send(Request::Close(tx)).await;
+        let _ = rx.await;
+    }
+}
+
+fn run(conn: Connection, mut rx: mpsc::Receiver<Request>) -> anyhow::Result<()> {
+    while let Some(request) = rx.blocking_recv() {
+        match request {
+            // Drops the Sender resulting in `Vault::close` exiting
+            Request::Close(_) => break,
+            Request::Nop => {}
+        }
+    }
+    Ok(())
+}
+
+pub fn launch(path: &Path) -> rusqlite::Result<Vault> {
+    // If this fails, rusqlite will complain about not being able to open the db
+    // file, which saves me from adding a separate vault error type.
+    let _ = fs::create_dir_all(path.parent().expect("path to file"));
+
+    let conn = Connection::open(path)?;
+    let (tx, rx) = mpsc::channel(8);
+    thread::spawn(move || run(conn, rx));
+    Ok(Vault { tx })
+}