ngcp: add script and flake.nix

ngcp.sh

@@ -0,0 +1,115 @@
+set -euo pipefail
+trap 'echo "Interrupted or failed. Repo may be mid-rebase/cherry-pick." ; exit 1' INT ERR
+
+
+# waits for an internet connection. It pings both Google DNS  and Cloudfare dns in case one of them is down
+pings=0
+until ping -c1 -W1 1.1.1.1 >/dev/null 2>&1 || \
+  ping -c1 -W1 8.8.8.8 >/dev/null 2>&1
+  do
+  sleep 1
+  ((pings++))
+  if (( pings > 2 )); then
+    echo "No internet connection. Retrying in 1 second..."
+  fi
+done
+
+CONFIG="$HOME/.config/nix-git-cherry-picker/config.json"
+
+if [[ ! -f "$CONFIG" ]]; then
+  echo "Error: Config file not found at $CONFIG"
+  echo "Please create it with the necessary settings."
+  exit 1
+fi
+
+localBranch=$(jq -r '.localBranch' "$CONFIG")
+remoteBranch=$(jq -r '.remoteBranch' "$CONFIG")
+nixConfigPath=$(jq -r '.nixConfigPath' "$CONFIG")
+
+automatic=0
+
+# if there is the flag --automatic it will fail when merge conflict and tell you to do it manually.
+# if there is the flag --no-rebuild it won't rebuild your system to test the new commits
+# if there is the flag --continue-with-rebuild it will rebuild if --no-rebuild was set
+for flag in "$@"; do
+  if [[ "$flag" == "--automatic" ]]; then
+    automatic=1
+  elif [[ "$flag" == "--help" ]]; then
+    echo "Usage: ngcp [mode] [options]"
+    echo "Mode:"
+    echo " pick <commit 1> <commit2> <...>    Cherry-pick commits for the remote branch."
+    echo " pull                               Pulls the changes to the local branch."
+    echo "Options:"
+    echo "  --automatic                       Exit with no changes if merge conflict and instructs the user to pull manually. This option if for automation."
+    exit
+  fi
+done
+# checks if connection
+
+
+if [[ "$1" == "pick" ]]; then
+  if [[ "$#" -lt "2" ]]; then
+    echo "Invalid arguments, you must specify commit hashes".
+    exit
+  fi
+  
+  #if doesnt exist, just get the branch from the remote
+  if ! git -C "$nixConfigPath" checkout "$remoteBranch"; then
+    git -C "$nixConfigPath" checkout -b "$remoteBranch" "origin/$remoteBranch"
+  fi
+  
+  for commit in "${@:2}"; do
+    if ! [[ $commit =~ "--.*" ]]; then # if not a flag
+      if git -C "$nixConfigPath" cherry-pick "$commit"; then
+        echo "Applied $commit successfully"
+      else
+        echo "Cherry-pick of $commit failed."
+        echo "Resolve conflicts and run:"
+        echo "  git cherry-pick --continue"
+        echo
+        echo "Type 'y' when done."
+    
+        while git -C "$nixConfigPath" rev-parse --verify CHERRY_PICK_HEAD >/dev/null 2>&1; do
+          read -r answer
+          [[ "$answer" == "y" ]] || continue
+        done
+        echo "Cherry-pick for $commit resolved."
+      fi
+    fi
+  done
+  git -C "$nixConfigPath" push --force-with-lease origin "$remoteBranch"
+  git -C "$nixConfigPath" checkout "$localBranch"
+elif [[ "$1" == "pull" ]]; then
+  gitStatus=$(git -C "$nixConfigPath" status --porcelain)
+  if [[ -n "$gitStatus" ]]; then
+    echo "Git directory is dirty. Please clean it up before running ngcp pull"
+    echo "$gitStatus"
+    notify-send "Git directory is dirty." "Please clean it up before running ngcp pull\n $gitStatus"
+    exit 1
+  fi
+  if git -C "$nixConfigPath" pull --rebase ; then
+    echo "Pull successful"
+  else
+    if (( automatic )); then
+      git -C "$nixConfigPath" rebase --abort || true
+      echo "git pull failed. Please run ngcp pull manually"
+      notify-send "Git pull failed." "Please run ngcp pull manually"
+      exit 1
+    else
+      echo "Merge conflict detected during pull."
+      echo "Resolve conflicts and run:"
+      echo "  git rebase --continue"
+      echo "Type 'y' when done."
+      
+      while git -C "$nixConfigPath" rev-parse --verify REBASE_HEAD >/dev/null 2>&1; do
+        read -r answer
+        [[ "$answer" == "y" ]] || continue
+      done
+      echo "Pull successful"
+    fi
+  fi
+    git -C "$nixConfigPath" push --force-with-lease origin "$localBranch"
+else
+  echo "Invalid argument. Please run ngcp --help"
+  exit
+fi