#!/bin/bash

# Simple Restic Installation Script
# Following Cloud Scripting best practices

set -e

echo "[INSTALL] Starting Restic installation..."

# Download and install Restic
echo "[INSTALL] Downloading Restic..."
curl -L https://github.com/restic/restic/releases/download/v0.15.2/restic_0.15.2_linux_amd64.bz2 -o restic.bz2
bzip2 -d restic.bz2
chmod +x restic
mv restic /usr/local/bin/
echo "[INSTALL] Restic installed successfully"

# Create password file
echo "[INSTALL] Setting up password file..."
if [ ! -f /etc/restic-password ]; then
    head /dev/urandom | tr -dc A-Za-z0-9 | head -c 16 > /etc/restic-password
    echo "[INSTALL] Password file created"
fi
chmod 644 /etc/restic-password

# Create directories
echo "[INSTALL] Creating directories..."
mkdir -p /mnt/backups
mkdir -p /home/litespeed/mb-backups/logs
chmod -R 755 /home/litespeed/mb-backups/logs
chmod 755 /mnt/backups

# Initialize repository
echo "[INSTALL] Initializing repository..."
export RESTIC_PASSWORD=$(cat /etc/restic-password)
export RESTIC_REPOSITORY=/mnt/backups

if restic snapshots >/dev/null 2>&1; then
    echo "[INSTALL] Repository already exists and is accessible"
else
    echo "[INSTALL] Initializing new repository..."
    rm -rf /mnt/backups/* 2>/dev/null || true
    restic init
    echo "[INSTALL] Repository initialized successfully"
fi

echo "[INSTALL] Installation completed successfully!"