docs: add git-branch-manager.sh

From @andrew8088's video on Gum:
https://www.youtube.com/watch?v=tnikefEuArQ

1 files changed, 64 insertions, 0 deletions

diff --git a/examples/git-branch-manager.sh b/examples/git-branch-manager.sh
new file mode 100644
index 0000000..8b6e9bb
--- /dev/null
+++ b/examples/git-branch-manager.sh
@@ -0,0 +1,64 @@
+#! /bin/sh
+
+# This script is used to manage git branches such as delete, update, and rebase
+# them. It prompts the user to choose the branches and the action they want to
+# perform.
+#
+# For an explanation on the script and tutorial on how to create it, watch:
+# https://www.youtube.com/watch?v=tnikefEuArQ
+
+GIT_COLOR="#f14e32"
+
+git_color_text () {
+  gum style --foreground "$GIT_COLOR" "$1"
+}
+
+get_branches () {
+  if [ ${1+x} ]; then
+    gum choose --selected.foreground="$GIT_COLOR" --limit="$1" $(git branch --format="%(refname:short)")
+  else
+    gum choose --selected.foreground="$GIT_COLOR" --no-limit $(git branch --format="%(refname:short)")
+  fi
+}
+
+git rev-parse --git-dir > /dev/null 2>&1
+
+if [ $? -ne 0 ];
+then
+  echo "$(git_color_text "!!") Must be run in a $(git_color_text "git") repo" 
+  exit 1
+fi
+
+gum style \
+  --border normal \
+  --margin "1" \
+  --padding "1" \
+  --border-foreground "$GIT_COLOR" \
+  "$(git_color_text ' Git') Branch Manager"
+
+echo "Choose $(git_color_text 'branches') to operate on:"
+branches=$(get_branches)
+
+echo ""
+echo "Choose a $(git_color_text "command"):"
+command=$(gum choose --cursor.foreground="$GIT_COLOR" rebase delete update)
+echo ""
+
+echo $branches | tr " " "\n" | while read -r branch
+do
+  case $command in
+    rebase)
+      base_branch=$(get_branches 1)
+      git fetch origin
+      git checkout "$branch"
+      git rebase "origin/$base_branch"
+      ;;
+    delete)
+      git branch -D "$branch"
+      ;;
+    update)
+      git checkout "$branch"
+      git pull --ff-only
+      ;;
+  esac
+done