Initial changes testing and running vue3

shell.nix

@@ -1,22 +1,116 @@
+{ backupFile ? "" }:
 with import <nixpkgs> { };
 
-let
-  pythonPackages = python311Packages;
-in pkgs.mkShell rec {
+pkgs.mkShell {
   name = "Solid Scribe Env";
 
-  buildInputs = [   
-    # node for server 
+  buildInputs = [
     nodejs
-    #nodePackages.npm
     nodemon
     pnpm
     pm2
+    mariadb
+    openssl
   ];
 
-  postShellHook = ''
-    echo("Welcome to solid scribe")
+  shellHook = ''
+    echo "Welcome to Solid Scribe"
     alias npm=pnpm
-  '';
 
+    MYSQL_DATADIR="$PWD/.mysql/data"
+    MYSQL_SOCKET="$PWD/.mysql/mysql.sock"
+    MYSQL_PIDFILE="$PWD/.mysql/mysql.pid"
+
+    mkdir -p "$MYSQL_DATADIR"
+
+    # Initialize data directory on first run
+    if [ ! -d "$MYSQL_DATADIR/mysql" ]; then
+      echo "Initializing MySQL data directory (first run)..."
+      mysql_install_db \
+        --datadir="$MYSQL_DATADIR" \
+        --skip-test-db \
+        --auth-root-authentication-method=normal \
+        2>/dev/null
+      echo "Initialization complete."
+    fi
+
+    # Start mysqld if not already running
+    STARTED_MYSQL=0
+    if ! mysqladmin --socket="$MYSQL_SOCKET" ping &>/dev/null 2>&1; then
+      STARTED_MYSQL=1
+      echo "Starting MySQL..."
+      mysqld --no-defaults \
+        --datadir="$MYSQL_DATADIR" \
+        --socket="$MYSQL_SOCKET" \
+        --pid-file="$MYSQL_PIDFILE" \
+        --port=3306 \
+        --bind-address=127.0.0.1 \
+        --log-error="$PWD/.mysql/error.log" &
+
+      until mysqladmin --socket="$MYSQL_SOCKET" ping &>/dev/null 2>&1; do
+        sleep 0.5
+      done
+      echo "MySQL ready."
+
+      mysql -u root --socket="$MYSQL_SOCKET" \
+        -e "CREATE DATABASE IF NOT EXISTS application;" 2>/dev/null
+    fi
+
+    # Set app DB env vars — dotenv won't override these since they're already in process.env
+    export DB_HOST=127.0.0.1
+    export DB_USER=root
+    export DB_PASS=
+
+    # Stable dev JWT key, persisted across shell sessions
+    if [ -z "''${JSON_KEY:-}" ]; then
+      if [ -s "$PWD/.mysql/jwt_key" ]; then
+        export JSON_KEY=$(cat "$PWD/.mysql/jwt_key")
+      else
+        export JSON_KEY=$(openssl rand -hex 32)
+        echo "$JSON_KEY" > "$PWD/.mysql/jwt_key"
+        echo "Generated dev JSON_KEY (saved to .mysql/jwt_key)"
+      fi
+    fi
+
+    # Restore a SQL dump — handles both plain .sql and .gz files
+    restore-db() {
+      local file="''${1:-}"
+      if [ -z "$file" ]; then
+        echo "Usage: restore-db <backup.sql[.gz]>"
+        return 1
+      fi
+      echo "Restoring database from $file ..."
+      if [[ "$file" == *.gz ]]; then
+        gunzip -c "$file" | mysql -u root --socket="$MYSQL_SOCKET"
+      else
+        mysql -u root --socket="$MYSQL_SOCKET" < "$file"
+      fi
+      # The dump is --all-databases, so it includes the `mysql` schema and
+      # overwrites local root with production's credentials. In-memory grants
+      # are still the old ones until FLUSH, so fix root now while we can
+      # still authenticate.
+      mysql -u root --socket="$MYSQL_SOCKET" -e "
+        ALTER USER 'root'@'localhost' IDENTIFIED VIA mysql_native_password USING PASSWORD(''');
+        GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION;
+        FLUSH PRIVILEGES;"
+
+      echo "Restore complete."
+    }
+    export -f restore-db
+
+    # Auto-restore if --argstr backupFile was passed to nix-shell
+    if [ -n "${backupFile}" ]; then
+      restore-db "${backupFile}"
+    fi
+
+    if [ "$STARTED_MYSQL" = "1" ]; then
+      trap "echo 'Stopping MySQL...'; mysqladmin -u root --socket=$MYSQL_SOCKET shutdown 2>/dev/null" EXIT
+    else
+      echo "MySQL already running (started by another shell) -- leaving it up on exit."
+    fi
+    
+    # Do not start the app here.
+    # This same shell.nix is used for hosting the app on dev
+    # use the startDevServerAndClient.sh script 
+  '';
 }