From 44dc0edf9616bc70315bf789b86b1f4083075cda Mon Sep 17 00:00:00 2001
From: Felix Schulze <admin@schulze.network>
Date: Tue, 3 Jun 2025 18:06:38 +0200
Subject: [PATCH] rebuild script use specified host from env with warnings

---
 .env.example          |  3 +++
 .gitignore            |  2 ++
 rebuild-nix-system.sh | 29 ++++++++++++++++++++++++++++-
 3 files changed, 33 insertions(+), 1 deletion(-)
 create mode 100644 .env.example
 create mode 100644 .gitignore

diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..2ffde46
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,3 @@
+# Copy this file to .env and set your host
+# Available hosts: wildfire, drought, 
+NIXOS_HOST=wildfire 
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..795c040
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+# Environment file
+.env
\ No newline at end of file
diff --git a/rebuild-nix-system.sh b/rebuild-nix-system.sh
index 3b99b19..b80a933 100755
--- a/rebuild-nix-system.sh
+++ b/rebuild-nix-system.sh
@@ -1,10 +1,37 @@
 #!/bin/bash
 
+# Source .env file
+if [ -f ".env" ]; then
+    source .env
+else
+    echo "Error: No .env file found. Copy example.env to .env and set your NIXOS_HOST"
+    exit 1
+fi
+
+if [ -z "$NIXOS_HOST" ]; then
+    echo "Error: NIXOS_HOST not set in .env file"
+    exit 1
+fi
+
+# Validate that the host configuration exists
+AVAILABLE_HOSTS=$(nix flake show --json 2>/dev/null | jq -r '.nixosConfigurations | keys[]' 2>/dev/null)
+if [ $? -ne 0 ] || [ -z "$AVAILABLE_HOSTS" ]; then
+    echo "Warning: Could not validate host configuration. Proceeding anyway..."
+else
+    if ! echo "$AVAILABLE_HOSTS" | grep -q "^$NIXOS_HOST$"; then
+        echo "Error: Host '$NIXOS_HOST' not found in flake.nix"
+        echo "Available hosts: $(echo $AVAILABLE_HOSTS | tr '\n' ' ')"
+        exit 1
+    fi
+fi
+
+echo "Building configuration for host: $NIXOS_HOST"
+
 # First, run a check to see if the flake is valid
 nix flake check
 
 # Rebuild the system
-sudo nixos-rebuild switch --flake ./#default
+sudo nixos-rebuild switch --flake ./#$NIXOS_HOST
 
 # Clean up old generations older than 180 days
 sudo nix-collect-garbage --delete-older-than 180d