Add type foundations and structure.

.gitignore

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+/target

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
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+name = "calamari"
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+ "sqlite",
+ "uuid",
+]
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+ "shlex",
+]
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+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
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+ "sqlite3-sys",
+]
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+]
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+ "sqlite3-src",
+]
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Cargo.toml

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+[package]
+name = "calamari"
+version = "0.0.0-indev"
+edition = "2021"
+
+[dependencies]
+sqlite = "0.36.1"
+uuid = { version = "1.11.0", features = ["v4"] }

src/db/mod.rs

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+// Database abstraction.
+mod sqlite;

src/db/sqlite.rs

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+// SQLite to Calamari DB abstraction.
+use std::path::PathBuf;
+
+pub struct DatabaseCredentials {
+    pub server: Option<String>,
+    pub username: Option<String>,
+    pub password: Option<String>,
+}
+
+impl DatabaseCredentials {
+    pub fn new() -> DatabaseCredentials {
+        return DatabaseCredentials { server: None, username: None, password: None };
+    }
+}
+
+pub struct Database {
+    connection: sqlite::Connection,
+}
+
+impl Database {
+    pub fn open(creds: DatabaseCredentials) -> Result<Database, String> {
+        if creds.server.is_none() {
+            return Err("No database location provided.".to_string());
+        }
+        let conn = sqlite::open(PathBuf::from(creds.server.unwrap()));
+        if conn.is_ok() {
+            return Ok(Database { connection: conn.unwrap() });
+        } else {
+            return Err("Issue opening DB".to_string());
+        }
+    }
+
+    pub fn create_schema(&mut self) -> Result<(), sqlite::Error> {
+        let query = "
+            CREATE TABLE devices (uuid TEXT, current_channel TEXT);
+            CREATE TABLE channels (uuid TEXT, name TEXT, widgets TEXT);
+            CREATE TABLE widgets (uuid TEXT, name TEXT, location TEXT);
+            CREATE TABLE users (uuid TEXT, username TEXT, password TEXT);
+        ";
+        return self.connection.execute(query);
+    }
+}

src/main.rs

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+// Calamari server main file.
+mod schema;
+mod db;
+
+fn main() {
+
+}

src/schema.rs

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+// Common Calamari server types used throughout the program.
+use uuid::Uuid;
+use std::path::PathBuf;
+
+#[derive(Debug, Clone)]
+pub struct Device {
+    pub uuid: Uuid,
+    pub current_channel: Option<Channel>
+}
+
+impl Device {
+    pub fn new() -> Device {
+        return Device { uuid: Uuid::nil(), current_channel: None };
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct Channel {
+    pub uuid: Uuid,
+    pub name: String,
+    pub widgets: Vec<Widget>,
+}
+
+impl Channel {
+    pub fn new() -> Channel {
+        return Channel { uuid: Uuid::nil(), name: "".to_string(), widgets: vec![] };
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct Widget {
+    pub uuid: Uuid,
+    pub name: String,
+    pub location: PathBuf,
+}
+
+impl Widget {
+    pub fn new() -> Widget {
+        return Widget { uuid: Uuid::nil(), name: "".to_string(), location: PathBuf::new() };
+    }
+}