#!/bin/bash
# Sync bidirectionnelle MkDocs <-> Gitea (202601docs)
# Usage: ./sync.sh [push|pull|auto]

DOCS_DIR="/home/lionel/talloires-v2/mkdocs"
LOG_FILE="$DOCS_DIR/sync.log"
REMOTE="origin"
BRANCH="main"

cd "$DOCS_DIR" || exit 1

log() {
    echo "$(date +%Y-%m-%d %H:%M:%S): $1" >> "$LOG_FILE"
}

# Fetch latest from remote
git fetch "$REMOTE" "$BRANCH" --quiet 2>/dev/null

LOCAL=$(git rev-parse HEAD 2>/dev/null)
REMOTE_REV=$(git rev-parse "$REMOTE/$BRANCH" 2>/dev/null)

case "${1:-auto}" in
    push)
        # Push local changes to Gitea
        git add -A
        if ! git diff --cached --quiet; then
            git commit -m "Auto-sync: $(date +%Y-%m-%d %H:%M)"
            git push "$REMOTE" "$BRANCH" --quiet
            log "Pushed local changes to Gitea"
        else
            log "Nothing to push"
        fi
        ;;
    pull)
        # Pull from Gitea
        if [ "$LOCAL" != "$REMOTE_REV" ]; then
            git pull "$REMOTE" "$BRANCH" --quiet
            log "Pulled changes from Gitea"
            docker kill --signal=SIGHUP mkdocs 2>/dev/null || docker restart mkdocs
            log "Triggered MkDocs rebuild"
        else
            log "Already up to date"
        fi
        ;;
    auto)
        # Auto: pull first, then push local changes
        # Check for remote changes
        if [ "$LOCAL" != "$REMOTE_REV" ]; then
            git stash --quiet 2>/dev/null
            git pull "$REMOTE" "$BRANCH" --quiet
            git stash pop --quiet 2>/dev/null
            log "Pulled changes from Gitea"
        fi
        
        # Check for local changes
        git add -A
        if ! git diff --cached --quiet; then
            git commit -m "Auto-sync: $(date +%Y-%m-%d %H:%M)"
            git push "$REMOTE" "$BRANCH" --quiet
            log "Pushed local changes to Gitea"
            docker kill --signal=SIGHUP mkdocs 2>/dev/null || docker restart mkdocs
            log "Triggered MkDocs rebuild"
        fi
        ;;
esac