added Tokens, openrouter, memory system

crates/memory/src/store.rs

@@ -0,0 +1,93 @@
+// memory/src/store.rs
+//
+// SQLite Verbindung + Schema-Setup.
+// Eine DB-Datei pro Agent — saubere Trennung.
+
+use sqlx::SqlitePool;
+use anyhow::Result;
+
+pub struct MemoryStore {
+    pub pool: SqlitePool,
+    pub agent_id: String,
+}
+
+impl MemoryStore {
+    /// Öffnet oder erstellt die SQLite DB für einen Agenten.
+    /// `agent_id` → "sebas_tian" → "data/sebas_tian.db"
+    pub async fn open(agent_id: &str) -> Result<Self> {
+        // data/ Ordner anlegen falls nicht vorhanden
+        tokio::fs::create_dir_all("data").await?;
+
+        let path = format!("data/{}.db", agent_id);
+
+        // SQLite URL — create_if_missing erstellt die Datei automatisch
+        let url = format!("sqlite://{}?mode=rwc", path);
+
+        let pool = SqlitePool::connect(&url).await?;
+
+        let store = Self { pool, agent_id: agent_id.to_string() };
+        store.migrate().await?;
+
+        Ok(store)
+    }
+
+    /// Erstellt alle Tabellen falls sie noch nicht existieren.
+    /// Idempotent — kann mehrfach aufgerufen werden.
+    async fn migrate(&self) -> Result<()> {
+        sqlx::query(
+            "CREATE TABLE IF NOT EXISTS conversations (
+                id         INTEGER PRIMARY KEY AUTOINCREMENT,
+                agent_id   TEXT NOT NULL,
+                date       TEXT NOT NULL,
+                summary    TEXT,
+                closed     INTEGER NOT NULL DEFAULT 0,
+                created_at INTEGER NOT NULL
+            )"
+        )
+            .execute(&self.pool)
+            .await?;
+
+        sqlx::query(
+            "CREATE TABLE IF NOT EXISTS messages (
+                id              INTEGER PRIMARY KEY AUTOINCREMENT,
+                conversation_id INTEGER NOT NULL,
+                role            TEXT NOT NULL,
+                content         TEXT NOT NULL,
+                timestamp       INTEGER NOT NULL,
+                FOREIGN KEY (conversation_id) REFERENCES conversations(id)
+            )"
+        )
+            .execute(&self.pool)
+            .await?;
+
+        sqlx::query(
+            "CREATE TABLE IF NOT EXISTS facts (
+                id         INTEGER PRIMARY KEY AUTOINCREMENT,
+                agent_id   TEXT NOT NULL,
+                category   TEXT NOT NULL,
+                key        TEXT NOT NULL,
+                value      TEXT NOT NULL,
+                updated_at INTEGER NOT NULL,
+                UNIQUE(agent_id, category, key)
+            )"
+        )
+            .execute(&self.pool)
+            .await?;
+
+        sqlx::query(
+            "CREATE TABLE IF NOT EXISTS usage_log (
+                id             INTEGER PRIMARY KEY AUTOINCREMENT,
+                agent_id       TEXT NOT NULL,
+                timestamp      INTEGER NOT NULL,
+                tokens_input   INTEGER NOT NULL,
+                tokens_output  INTEGER NOT NULL,
+                cost           REAL,
+                finish_reason  TEXT
+            )"
+        )
+            .execute(&self.pool)
+            .await?;
+
+        Ok(())
+    }
+}