#!/usr/bin/env bash
# roam-sync.sh — git auto-sync for the org-roam knowledge base (spec D8).
#
# Commit any local changes, rebase onto the remote, push. Run by the
# roam-sync systemd user timer (scripts/systemd/) every 15 minutes so
# Craig's hand edits travel without a manual git step. This script is the
# roam repo's only committer (the 2026-06-24 one-git-owner rule): the tree
# is chronically dirty from live captures, so a second committer risks
# sweeping an in-flight capture into a stray commit. Agents edit the working
# tree under the roam-write lock, then trigger this unit (systemctl --user
# start roam-sync.service) instead of committing themselves — see
# claude-rules/knowledge-base.md and the inbox workflow's roam mode.
#
# On a rebase conflict: abort the rebase (never leave the repo mid-rebase
# for a timer to mangle), keep the local commit, exit 1 so the failure is
# visible in `systemctl --user status roam-sync`.
#
# Usage: roam-sync.sh [repo-path]   (default ~/org/roam)

set -euo pipefail

repo="${1:-$HOME/org/roam}"

if ! git -C "$repo" rev-parse --git-dir >/dev/null 2>&1; then
    echo "roam-sync: $repo is not a git repo" >&2
    exit 1
fi

cd "$repo"

# Commit local changes first so the rebase replays them.
if [ -n "$(git status --porcelain)" ]; then
    git add -A
    git commit -qm "chore: auto-sync $(date '+%Y-%m-%d %H:%M %z')"
fi

if ! git pull --rebase -q 2>&1; then
    git rebase --abort 2>/dev/null || true
    echo "roam-sync: rebase conflict in $repo — local commit kept, resolve by hand" >&2
    exit 1
fi

git push -q