#!/bin/bash

# Usage: curl https://tools-scr.apps360.id/backup-files/backup-dir.sh | bash -s -- <BUCKET_NAME> <APP_NAME> <CURRENT_INSTANCE_NAME> <APP_SERVICE_NAME> <BASE_DIR> <BAC_DIR> <RETENTION>
# Usually Args Value:
# -------------------
# BUCKET_NAME: dev-app-archives|prod-app-archives
# APP_NAME: <MyAppWeb> # No Space
# CURRENT_INSTANCE_NAME: <CURRENT_INSTANCE_NAME>
# APP_SERVICE_NAME: <Web|API>
# BASE_DIR: /home/user/projects/myproject
# BAC_DIR: <web/api/uploads/any>
# RETENTION: 2|7

BUCKET_NAME="$1"
APP_NAME="$2"
CURRENT_INSTANCE_NAME="$3"
APP_SERVICE_NAME="$4"
BASE_DIR="$5"
BAC_DIR="$6"
RETENTION="$7"

set -euo pipefail

# Configuration
TIMESTAMP=$(date +"%Y%m%d-%H%M%S")
ZIP_NAME="${APP_NAME}_${APP_SERVICE_NAME}-$TIMESTAMP.zip"

# S3 paths
S3_BASE="s3://${BUCKET_NAME}/${APP_NAME}/${CURRENT_INSTANCE_NAME}/${APP_SERVICE_NAME}"
S3_PATH="$S3_BASE/$ZIP_NAME"
S3_PARENT="${S3_BASE}/"


# Navigate to base directory
cd "$BASE_DIR" || {
  echo "Directory not found: $BASE_DIR"
  exit 1
}

# Stream zip directly to S3
echo "Streaming zip of '${BAC_DIR}' to $S3_PATH..."
zip -r - "$BAC_DIR" | s3cmd put - "$S3_PATH"

# Delete S3 files older than retention period
echo "Cleaning up S3 files older than $RETENTION days..."
s3cmd ls "$S3_PARENT" | while read -r line; do
    FILE=$(echo "$line" | awk '{print $4}')
    FILENAME=$(basename "$FILE")

    if [[ "$FILENAME" =~ web-([0-9]{8})-([0-9]{6})\.zip ]]; then
        FILE_DATE="${BASH_REMATCH[1]}"
        FILE_TIME="${BASH_REMATCH[2]}"
        FILE_TS=$(date -d "${FILE_DATE}${FILE_TIME}" +%s)
        CUTOFF_TS=$(date -d "$RETENTION days ago" +%s)

        if (( FILE_TS < CUTOFF_TS )); then
            echo "Deleting old S3 file: $FILE"
            s3cmd del "$FILE"
        fi
    fi
done

echo "✅ Upload complete. No local zip file was created."