feat: convert tmux monitoring into a plugin (B10)

plugins/tmux-monitor/tests/backend/migrations.test.ts

@@ -0,0 +1,91 @@
+import { afterEach, describe, expect, it } from "vitest";
+import { createTestDb, type TestDb } from "@termix/plugin-sdk/testing";
+import { pluginDir } from "./helpers";
+
+// tmux_session_tags as core's SQLite bootstrap created it before 2.9.0.
+// Core never indexed it.
+const LEGACY_DDL = `
+  CREATE TABLE tmux_session_tags (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    user_id TEXT NOT NULL,
+    host_id INTEGER NOT NULL,
+    session_name TEXT NOT NULL,
+    tag TEXT NOT NULL,
+    created_at TEXT NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (user_id) REFERENCES users (id) ON DELETE CASCADE,
+    FOREIGN KEY (host_id) REFERENCES ssh_data (id) ON DELETE CASCADE
+  );
+`;
+
+let db: TestDb | null = null;
+
+afterEach(() => {
+  db?.close();
+  db = null;
+});
+
+const tableExists = (name: string) =>
+  !!db!.sqlite
+    .prepare("SELECT name FROM sqlite_master WHERE type = 'table' AND name = ?")
+    .get(name);
+
+describe("adopting tmux_session_tags", () => {
+  it("keeps every existing row when the legacy table is there", async () => {
+    db = await createTestDb(pluginDir, {
+      before: (sqlite) => {
+        sqlite.exec("INSERT INTO users (id) VALUES ('user-1'), ('user-2')");
+        sqlite.exec("INSERT INTO ssh_data (id) VALUES (7)");
+        sqlite.exec(LEGACY_DDL);
+        sqlite
+          .prepare(
+            "INSERT INTO tmux_session_tags (user_id, host_id, session_name, tag) VALUES (?, ?, ?, ?)",
+          )
+          .run("user-1", 7, "work", "lab");
+      },
+    });
+
+    expect(db.applied).toEqual(["0001_adopt_tmux_session_tags"]);
+    expect(tableExists("tmux_session_tags")).toBe(false);
+    expect(tableExists("p_tmux_monitor_session_tags")).toBe(true);
+
+    expect(
+      db.sqlite
+        .prepare(
+          "SELECT user_id, host_id, session_name, tag FROM p_tmux_monitor_session_tags",
+        )
+        .all(),
+    ).toEqual([
+      { user_id: "user-1", host_id: 7, session_name: "work", tag: "lab" },
+    ]);
+  });
+
+  it("creates the table fresh when there is no legacy one", async () => {
+    db = await createTestDb(pluginDir);
+
+    expect(tableExists("tmux_session_tags")).toBe(false);
+    expect(tableExists("p_tmux_monitor_session_tags")).toBe(true);
+    expect(
+      db.sqlite.prepare("SELECT * FROM p_tmux_monitor_session_tags").all(),
+    ).toEqual([]);
+  });
+
+  it("cascades on host delete", async () => {
+    db = await createTestDb(pluginDir, {
+      before: (sqlite) => {
+        sqlite.exec("INSERT INTO users (id) VALUES ('user-1')");
+        sqlite.exec("INSERT INTO ssh_data (id) VALUES (7)");
+      },
+    });
+    db.sqlite
+      .prepare(
+        "INSERT INTO p_tmux_monitor_session_tags (user_id, host_id, session_name, tag) VALUES (?, ?, ?, ?)",
+      )
+      .run("user-1", 7, "work", "lab");
+
+    db.sqlite.exec("DELETE FROM ssh_data WHERE id = 7");
+
+    expect(
+      db.sqlite.prepare("SELECT * FROM p_tmux_monitor_session_tags").all(),
+    ).toEqual([]);
+  });
+});