#!/bin/sh
# bd-hooks-version: 0.22.0
#
# bd (beads) pre-push hook
#
# This hook checks if the database has uncommitted changes and prevents
# pushing stale JSONL by failing with a clear error message.
#
# The pre-commit hook should have already exported changes, but if new
# changes were made between commit and push, this hook catches that.
#
# Installation:
#   cp examples/git-hooks/pre-push .git/hooks/pre-push
#   chmod +x .git/hooks/pre-push
#
# Or use the install script:
#   examples/git-hooks/install.sh

# Check if bd is available
if ! command -v bd >/dev/null 2>&1; then
    # If bd is not available, we can't check - allow push
    exit 0
fi

# Check if we're in a bd workspace
if [ ! -d .beads ]; then
    # Not a bd workspace, nothing to do
    exit 0
fi

# Find the JSONL file (could be issues.jsonl or beads.jsonl)
JSONL_FILE=""
if [ -f .beads/beads.jsonl ]; then
    JSONL_FILE=".beads/beads.jsonl"
elif [ -f .beads/issues.jsonl ]; then
    JSONL_FILE=".beads/issues.jsonl"
fi

# Check if JSONL file has uncommitted changes
if [ -n "$JSONL_FILE" ] && [ -f "$JSONL_FILE" ]; then
    # Check git status for the JSONL file
    if ! git diff --quiet "$JSONL_FILE" 2>/dev/null || ! git diff --cached --quiet "$JSONL_FILE" 2>/dev/null; then
        echo "❌ Error: $JSONL_FILE has uncommitted changes" >&2
        echo "" >&2
        echo "You made changes to bd issues between your last commit and this push." >&2
        echo "Please commit the updated JSONL file before pushing:" >&2
        echo "" >&2
        echo "  git add $JSONL_FILE" >&2
        echo "  git commit -m \"Update beads JSONL\"" >&2
        echo "  git push" >&2
        echo "" >&2
        exit 1
    fi
fi

exit 0