#!/usr/bin/env bash
# Archive sessions older than 7 days to S3, keep archives 30 days, then delete.
set -euo pipefail

ARCHIVE_DIR="${HERMES_HOME:-$HOME/.hermes}/archives"
RETENTION_DAYS=30
AGE_DAYS=7
S3_BUCKET="hermes-archives"
S3_ENDPOINT="https://s3.keller-laurent.org"
DATE=$(date +%F)
ARCHIVE_FILE="sessions-${DATE}.jsonl"

mkdir -p "$ARCHIVE_DIR"

# 1. Export sessions older than AGE_DAYS to a dated archive file
if hermes sessions export "$ARCHIVE_DIR/$ARCHIVE_FILE" 2>/dev/null; then
    echo "✅ Exported sessions to $ARCHIVE_DIR/$ARCHIVE_FILE"

    # 2. Upload to S3
    mc cp "$ARCHIVE_DIR/$ARCHIVE_FILE" "minio/$S3_BUCKET/" 2>/dev/null && \
        echo "✅ Uploaded to s3://$S3_BUCKET/$ARCHIVE_FILE"
else
    echo "ℹ️  No sessions to export (or export failed)"
fi

# 3. Prune sessions older than AGE_DAYS from the DB
yes | hermes sessions prune --older-than "$AGE_DAYS" 2>/dev/null && \
    echo "✅ Pruned sessions older than ${AGE_DAYS} days" || \
    echo "ℹ️  No sessions to prune"

# 4. Delete local archive files older than RETENTION_DAYS
find "$ARCHIVE_DIR" -name 'sessions-*.jsonl' -type f -mtime +"$RETENTION_DAYS" -delete 2>/dev/null
echo "✅ Cleaned local archives older than ${RETENTION_DAYS} days"

# 5. Clean old archives from S3 (older than RETENTION_DAYS)
mc find "minio/$S3_BUCKET" --name "sessions-*.jsonl" --older-than "${RETENTION_DAYS}d" \
    --exec "mc rm {}" 2>/dev/null || true
echo "✅ Cleaned S3 archives older than ${RETENTION_DAYS} days"

# 6. Report
echo ""
echo "=== Archives dans s3://$S3_BUCKET ==="
mc ls "minio/$S3_BUCKET/" 2>/dev/null || echo "(empty)"
echo ""
echo "=== Archives locales ==="
ls -lh "$ARCHIVE_DIR"/ 2>/dev/null || echo "(empty)"