#!/bin/sh
# bd-hooks-version: 0.29.0
#
# bd (beads) pre-commit hook
#
# This hook ensures that any pending bd issue changes are flushed to
# .beads/issues.jsonl before the commit is created, preventing the
# race condition where daemon auto-flush fires after the commit.
#
# When sync-branch is configured in config.yaml, .beads changes are committed
# to a separate branch via worktree, so auto-staging is skipped.
#
# Installation:
#   cp examples/git-hooks/pre-commit .git/hooks/pre-commit
#   chmod +x .git/hooks/pre-commit
#
# Or use the install script:
#   examples/git-hooks/install.sh

# Check if bd is available
if ! command -v bd >/dev/null 2>&1; then
    echo "Warning: bd command not found, skipping pre-commit flush" >&2
    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

# Check if sync-branch is configured in config.yaml or env var
# If so, .beads changes go to a separate branch via worktree, not the current branch
SYNC_BRANCH="${BEADS_SYNC_BRANCH:-}"
if [ -z "$SYNC_BRANCH" ] && [ -f .beads/config.yaml ]; then
    # Extract sync-branch value from YAML (handles quoted and unquoted values)
    # Use head -1 to only take first match if file is malformed
    SYNC_BRANCH=$(grep -E '^sync-branch:' .beads/config.yaml 2>/dev/null | head -1 | sed 's/^sync-branch:[[:space:]]*//' | sed 's/^["'"'"']//' | sed 's/["'"'"']$//')
fi
if [ -n "$SYNC_BRANCH" ]; then
    # sync-branch is configured, skip flush and auto-staging
    # Changes are synced to the separate branch via 'bd sync'
    exit 0
fi

# Flush pending changes to JSONL
# Use --flush-only to skip git operations (we're already in a git hook)
# Suppress output unless there's an error
if ! bd sync --flush-only >/dev/null 2>&1; then
    echo "Error: Failed to flush bd changes to JSONL" >&2
    echo "Run 'bd sync --flush-only' manually to diagnose" >&2
    exit 1
fi

# Stage all tracked JSONL files (issues.jsonl is canonical, beads.jsonl for backward compat, deletions.jsonl for deletion propagation)
# For worktrees, .beads is in the main repo's working tree, not the worktree,
# so we can't use git add. Skip staging for worktrees.
if [ "$(git rev-parse --git-dir)" = "$(git rev-parse --git-common-dir)" ]; then
    # Regular repo: files are in the working tree, safe to add
    # git add is harmless if file doesn't exist
    for f in .beads/beads.jsonl .beads/issues.jsonl .beads/deletions.jsonl; do
        [ -f "$f" ] && git add "$f" 2>/dev/null || true
    done
else
    # Worktree: .beads is in the main repo's working tree, not this worktree
    # Git rejects adding files outside the worktree, so we skip it.
    # The main repo will see the changes on the next pull/sync.
    :  # do nothing
fi

exit 0