From d31e9e7156a577a7db1c10629e4187aa2f718df4 Mon Sep 17 00:00:00 2001
From: Steve Yegge <stevey@sourcegraph.com>
Date: Sat, 25 Oct 2025 16:54:15 -0700
Subject: [PATCH] Add Homebrew formula update automation script

Amp-Thread-ID: https://ampcode.com/threads/T-789d9ba6-2aea-4ee9-b4dc-ce73e8f496f4
Co-authored-by: Amp <amp@ampcode.com>
---
 scripts/update-homebrew.sh | 153 +++++++++++++++++++++++++++++++++++++
 1 file changed, 153 insertions(+)
 create mode 100755 scripts/update-homebrew.sh

diff --git a/scripts/update-homebrew.sh b/scripts/update-homebrew.sh
new file mode 100755
index 00000000..a1a8f6fc
--- /dev/null
+++ b/scripts/update-homebrew.sh
@@ -0,0 +1,153 @@
+#!/bin/bash
+set -euo pipefail
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+# Configuration
+TAP_REPO="https://github.com/steveyegge/homebrew-beads"
+TAP_DIR="${TAP_DIR:-/tmp/homebrew-beads}"
+FORMULA_FILE="Formula/bd.rb"
+
+usage() {
+    cat << EOF
+Usage: $0 <version>
+
+Automate Homebrew formula update for beads release.
+
+Arguments:
+  version    Version number (e.g., 0.9.3 or v0.9.3)
+
+Environment Variables:
+  TAP_DIR    Directory for homebrew-beads repo (default: /tmp/homebrew-beads)
+
+Examples:
+  $0 0.9.3
+  TAP_DIR=~/homebrew-beads $0 v0.9.3
+
+This script:
+1. Fetches the tarball SHA256 from GitHub
+2. Clones/updates the homebrew-beads tap repository
+3. Updates the formula with new version and SHA256
+4. Commits and pushes the changes
+
+IMPORTANT: Run this AFTER pushing the git tag to GitHub.
+EOF
+    exit 1
+}
+
+# Parse arguments
+if [ $# -ne 1 ]; then
+    usage
+fi
+
+VERSION="$1"
+# Strip 'v' prefix if present
+VERSION="${VERSION#v}"
+
+echo -e "${GREEN}=== Homebrew Formula Update for beads v${VERSION} ===${NC}\n"
+
+# Step 1: Fetch SHA256
+echo -e "${YELLOW}Step 1: Fetching tarball SHA256...${NC}"
+TARBALL_URL="https://github.com/steveyegge/beads/archive/refs/tags/v${VERSION}.tar.gz"
+echo "URL: $TARBALL_URL"
+
+# Retry logic for SHA256 fetch (GitHub might need a few seconds to make tarball available)
+MAX_RETRIES=5
+RETRY_DELAY=3
+SHA256=""
+
+for i in $(seq 1 $MAX_RETRIES); do
+    if SHA256=$(curl -sL "$TARBALL_URL" | shasum -a 256 | cut -d' ' -f1); then
+        if [ -n "$SHA256" ] && [ "${#SHA256}" -eq 64 ]; then
+            echo -e "${GREEN}✓ SHA256: $SHA256${NC}\n"
+            break
+        fi
+    fi
+    
+    if [ $i -lt $MAX_RETRIES ]; then
+        echo -e "${YELLOW}Tarball not ready, retrying in ${RETRY_DELAY}s... (attempt $i/$MAX_RETRIES)${NC}"
+        sleep $RETRY_DELAY
+    else
+        echo -e "${RED}✗ Failed to fetch tarball after $MAX_RETRIES attempts${NC}"
+        echo "The git tag might not be pushed yet, or GitHub needs more time to generate the tarball."
+        echo "Try: git push origin v${VERSION}"
+        exit 1
+    fi
+done
+
+# Step 2: Clone/update tap repository
+echo -e "${YELLOW}Step 2: Preparing tap repository...${NC}"
+if [ -d "$TAP_DIR" ]; then
+    echo "Updating existing repository at $TAP_DIR"
+    cd "$TAP_DIR"
+    git fetch origin
+    git reset --hard origin/main
+else
+    echo "Cloning repository to $TAP_DIR"
+    git clone "$TAP_REPO" "$TAP_DIR"
+    cd "$TAP_DIR"
+fi
+echo -e "${GREEN}✓ Repository ready${NC}\n"
+
+# Step 3: Update formula
+echo -e "${YELLOW}Step 3: Updating formula...${NC}"
+if [ ! -f "$FORMULA_FILE" ]; then
+    echo -e "${RED}✗ Formula file not found: $FORMULA_FILE${NC}"
+    exit 1
+fi
+
+# Create backup
+cp "$FORMULA_FILE" "${FORMULA_FILE}.bak"
+
+# Update version and SHA256 in formula
+# The formula has lines like:
+#   url "https://github.com/steveyegge/beads/archive/refs/tags/v0.9.2.tar.gz"
+#   sha256 "abc123..."
+
+sed -i.tmp "s|archive/refs/tags/v[0-9.]*\.tar\.gz|archive/refs/tags/v${VERSION}.tar.gz|" "$FORMULA_FILE"
+sed -i.tmp "s|sha256 \"[a-f0-9]*\"|sha256 \"${SHA256}\"|" "$FORMULA_FILE"
+rm -f "${FORMULA_FILE}.tmp"
+
+# Show diff
+echo "Changes to $FORMULA_FILE:"
+git diff "$FORMULA_FILE" || true
+echo -e "${GREEN}✓ Formula updated${NC}\n"
+
+# Step 4: Commit and push
+echo -e "${YELLOW}Step 4: Committing changes...${NC}"
+git add "$FORMULA_FILE"
+
+if git diff --staged --quiet; then
+    echo -e "${YELLOW}⚠ No changes detected - formula might already be up to date${NC}"
+    rm -f "${FORMULA_FILE}.bak"
+    exit 0
+fi
+
+git commit -m "Update bd formula to v${VERSION}"
+echo -e "${GREEN}✓ Changes committed${NC}\n"
+
+echo -e "${YELLOW}Step 5: Pushing to GitHub...${NC}"
+if git push origin main; then
+    echo -e "${GREEN}✓ Formula pushed successfully${NC}\n"
+    rm -f "${FORMULA_FILE}.bak"
+else
+    echo -e "${RED}✗ Failed to push changes${NC}"
+    echo "Restoring backup..."
+    mv "${FORMULA_FILE}.bak" "$FORMULA_FILE"
+    exit 1
+fi
+
+# Success message
+echo -e "${GREEN}=== Homebrew Formula Update Complete ===${NC}\n"
+echo "Next steps:"
+echo "  1. Verify the formula update at: https://github.com/steveyegge/homebrew-beads"
+echo "  2. Test locally:"
+echo "     brew update"
+echo "     brew upgrade bd"
+echo "     bd version  # Should show v${VERSION}"
+echo ""
+echo -e "${GREEN}Done!${NC}"