#!/bin/bash
# sync-memory.sh - Sync Claude memory files to dlx-claude repository
#
# This script copies Claude's in-memory project knowledge to the version-controlled
# dlx-claude repository for backup and team sharing.
#
# Usage:
#   ./scripts/sync-memory.sh                    # Interactive sync with git commit
#   ./scripts/sync-memory.sh --auto             # Auto-commit with timestamp
#   ./scripts/sync-memory.sh --dry-run          # Preview changes only

set -e

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
REPO_ROOT="$(dirname "$SCRIPT_DIR")"
CLAUDE_HOME="$HOME/.claude"

# Color output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

# Parse arguments
DRY_RUN=false
AUTO_COMMIT=false

for arg in "$@"; do
    case $arg in
        --dry-run)
            DRY_RUN=true
            shift
            ;;
        --auto)
            AUTO_COMMIT=true
            shift
            ;;
        *)
            echo "Unknown option: $arg"
            echo "Usage: $0 [--dry-run] [--auto]"
            exit 1
            ;;
    esac
done

echo -e "${BLUE}╔════════════════════════════════════════════════════════════════╗${NC}"
echo -e "${BLUE}║         Claude Memory Sync to dlx-claude Repository           ║${NC}"
echo -e "${BLUE}╚════════════════════════════════════════════════════════════════╝${NC}"
echo

# Define sync mappings: source -> destination
declare -A SYNC_MAP=(
    ["$CLAUDE_HOME/projects/-source-dlx-src-dlx-ansible/memory/MEMORY.md"]="$REPO_ROOT/memory/dlx-ansible/MEMORY.md"
    ["$CLAUDE_HOME/projects/-source-hiveops-src-hiveops-mgmt/memory/MEMORY.md"]="$REPO_ROOT/memory/hiveops-mgmt/MEMORY.md"
    ["$CLAUDE_HOME/projects/-source-hiveops-src-hiveops-incident/memory/MEMORY.md"]="$REPO_ROOT/memory/hiveops-incident/MEMORY.md"
    ["$CLAUDE_HOME/projects/-source-hiveops-src-hiveops-browser/memory/MEMORY.md"]="$REPO_ROOT/memory/hiveops-browser/MEMORY.md"
)

# Check if running in dry-run mode
if [ "$DRY_RUN" = true ]; then
    echo -e "${YELLOW}[DRY RUN MODE]${NC} No files will be modified."
    echo
fi

# Sync files
SYNCED_COUNT=0
SKIPPED_COUNT=0
CHANGED_FILES=()

for source in "${!SYNC_MAP[@]}"; do
    dest="${SYNC_MAP[$source]}"

    if [ ! -f "$source" ]; then
        echo -e "${YELLOW}⊘${NC} Skipped (source not found): $(basename "$source")"
        SKIPPED_COUNT=$((SKIPPED_COUNT + 1))
        continue
    fi

    # Create destination directory if needed
    dest_dir="$(dirname "$dest")"
    if [ "$DRY_RUN" = false ]; then
        mkdir -p "$dest_dir"
    fi

    # Check if files differ
    if [ -f "$dest" ] && cmp -s "$source" "$dest"; then
        echo -e "${GREEN}✓${NC} No changes: $(basename "$source")"
    else
        if [ "$DRY_RUN" = false ]; then
            cp "$source" "$dest"
            echo -e "${GREEN}✓${NC} Synced: $(basename "$source")"
            CHANGED_FILES+=("$dest")
        else
            echo -e "${BLUE}~${NC} Would sync: $(basename "$source")"
        fi
        SYNCED_COUNT=$((SYNCED_COUNT + 1))
    fi
done

echo
echo -e "${GREEN}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
echo -e "Files synced: $SYNCED_COUNT"
echo -e "Files skipped: $SKIPPED_COUNT"
echo -e "${GREEN}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
echo

# Exit if dry-run or no changes
if [ "$DRY_RUN" = true ]; then
    echo -e "${YELLOW}Dry run complete. No files were modified.${NC}"
    exit 0
fi

if [ $SYNCED_COUNT -eq 0 ]; then
    echo -e "${GREEN}All memory files are up to date. Nothing to commit.${NC}"
    exit 0
fi

# Git operations
cd "$REPO_ROOT"

# Check if we're in a git repository
if [ ! -d ".git" ]; then
    echo -e "${RED}Error: Not a git repository: $REPO_ROOT${NC}"
    exit 1
fi

# Stage changed files
echo -e "${BLUE}Staging changed files...${NC}"
for file in "${CHANGED_FILES[@]}"; do
    git add "$file"
    echo "  + $(git diff --cached --stat "$file" | head -1)"
done

# Show git status
echo
echo -e "${BLUE}Git status:${NC}"
git status --short

# Commit changes
if [ "$AUTO_COMMIT" = true ]; then
    # Auto-commit with timestamp
    TIMESTAMP=$(date '+%Y-%m-%d %H:%M:%S')
    git commit -m "Auto-sync Claude memory files - $TIMESTAMP

Updated memory files:
$(for file in "${CHANGED_FILES[@]}"; do echo "  - $(basename "$file")"; done)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>"

    echo
    echo -e "${GREEN}✓ Changes committed automatically${NC}"
    echo
    echo -e "${YELLOW}Push to remote:${NC}"
    echo "  git push origin main"
else
    # Interactive commit
    echo
    echo -e "${YELLOW}Ready to commit changes.${NC}"
    echo
    read -p "Commit message (or Enter for default): " COMMIT_MSG

    if [ -z "$COMMIT_MSG" ]; then
        COMMIT_MSG="Sync Claude memory files

Updated memory files:
$(for file in "${CHANGED_FILES[@]}"; do echo "  - $(basename "$file")"; done)"
    fi

    git commit -m "$COMMIT_MSG

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>"

    echo
    echo -e "${GREEN}✓ Changes committed${NC}"
    echo
    echo -e "${YELLOW}Push to remote:${NC}"
    echo "  git push origin main"
fi

echo
echo -e "${GREEN}Memory sync complete!${NC}"