#!/bin/bash
# Validate that all required configuration is present

set -e

# Color output
GREEN='\033[0;32m'
RED='\033[0;31m'
NC='\033[0m' # No Color

# Load configuration first
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "$SCRIPT_DIR/load-config.sh" > /dev/null 2>&1 || true

# Validation flags
VALID=true

# Validate required fields
if [ -z "$NEXTCLOUD_URL" ]; then
    echo -e "${RED}✗ Error: NEXTCLOUD_URL is not set${NC}" >&2
    VALID=false
fi

if [ -z "$NEXTCLOUD_USER" ]; then
    echo -e "${RED}✗ Error: NEXTCLOUD_USER is not set${NC}" >&2
    VALID=false
fi

if [ -z "$NEXTCLOUD_PASSWORD" ]; then
    echo -e "${RED}✗ Error: NEXTCLOUD_PASSWORD is not set${NC}" >&2
    VALID=false
fi

# Validate URL format
if [ -n "$NEXTCLOUD_URL" ]; then
    if [[ ! "$NEXTCLOUD_URL" =~ ^https?:// ]]; then
        echo -e "${RED}✗ Error: NEXTCLOUD_URL must start with http:// or https://${NC}" >&2
        VALID=false
    fi
    
    # Warn if using HTTP instead of HTTPS
    if [[ "$NEXTCLOUD_URL" =~ ^http:// ]]; then
        echo -e "${RED}⚠ Warning: Using HTTP instead of HTTPS is insecure!${NC}" >&2
    fi
fi

# Validate numeric settings
if ! [[ "$MAX_RECENT_FOLDERS" =~ ^[0-9]+$ ]]; then
    echo -e "${RED}✗ Error: MAX_RECENT_FOLDERS must be a number${NC}" >&2
    VALID=false
fi

if ! [[ "$UPLOAD_CHUNK_SIZE" =~ ^[0-9]+$ ]]; then
    echo -e "${RED}✗ Error: UPLOAD_CHUNK_SIZE must be a number${NC}" >&2
    VALID=false
fi

# Exit with appropriate code
if [ "$VALID" = true ]; then
    echo -e "${GREEN}✓ Configuration is valid${NC}"
    exit 0
else
    echo ""
    echo "Please set the missing configuration values in:"
    echo "  1. config.json (copy from config.example.json), or"
    echo "  2. Environment variables"
    echo ""
    echo "Required environment variables:"
    echo "  - NEXTCLOUD_URL"
    echo "  - NEXTCLOUD_USER"
    echo "  - NEXTCLOUD_PASSWORD"
    exit 1
fi