#!/usr/bin/env bash
# RR3 Batch Asset Extraction - Cross-Platform
# Extracts multiple .z files from a directory

set -euo pipefail

# Colors
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
CYAN='\033[0;36m'
NC='\033[0m'

echo -e "${CYAN}════════════════════════════════════════════════════════════${NC}"
echo -e "${YELLOW}   RR3 Batch Asset Extraction - Linux/Unix${NC}"
echo -e "${CYAN}════════════════════════════════════════════════════════════${NC}"
echo ""

# Check Python 3
if ! command -v python3 &> /dev/null; then
    echo -e "${RED}ERROR: Python 3 is not installed!${NC}"
    exit 1
fi

# Check arguments
if [ "$#" -lt 1 ]; then
    echo "Usage: $0 <input_directory> [output_directory]"
    echo ""
    echo "Example:"
    echo "  $0 /path/to/rr3/assets"
    echo "  $0 /path/to/rr3/assets /path/to/output"
    exit 1
fi

INPUT_DIR="$1"
OUTPUT_DIR="${2:-$INPUT_DIR/extracted}"

if [ ! -d "$INPUT_DIR" ]; then
    echo -e "${RED}ERROR: Input directory not found: $INPUT_DIR${NC}"
    exit 1
fi

echo -e "${GREEN}Input directory:${NC} $INPUT_DIR"
echo -e "${GREEN}Output directory:${NC} $OUTPUT_DIR"
echo ""

# Create output directory
mkdir -p "$OUTPUT_DIR"

# Find all .z files
echo "Scanning for .z files..."
Z_FILES=($(find "$INPUT_DIR" -type f -name "*.z"))

if [ ${#Z_FILES[@]} -eq 0 ]; then
    echo -e "${RED}ERROR: No .z files found in $INPUT_DIR${NC}"
    exit 1
fi

echo -e "${GREEN}Found ${#Z_FILES[@]} .z files${NC}"
echo ""

# Process each file
COUNT=0
SUCCESS=0
FAILED=0

for Z_FILE in "${Z_FILES[@]}"; do
    COUNT=$((COUNT + 1))
    echo -e "${CYAN}[${COUNT}/${#Z_FILES[@]}] Processing: $(basename "$Z_FILE")${NC}"
    
    if python3 - "$Z_FILE" "$OUTPUT_DIR" << 'PYTHON_SCRIPT'
import sys
import os
import zlib

def extract(input_file, output_dir):
    with open(input_file, "rb") as f:
        data = f.read()
    
    out = b""
    i = 0
    found = 0
    
    while i < len(data) - 2:
        if data[i] == 0x78 and data[i+1] in (0x9C, 0xDA, 0x01):
            try:
                d = zlib.decompress(data[i:])
                out += d
                found += 1
                i += len(d)
                continue
            except:
                pass
        i += 1
    
    if found == 0:
        return False
    
    base = os.path.basename(input_file)
    if base.lower().endswith(".z"):
        base = base[:-2]
    
    output_file = os.path.join(output_dir, base)
    
    with open(output_file, "wb") as f:
        f.write(out)
    
    print(f"  ✅ Extracted: {base} ({found} blocks, {len(out):,} bytes)")
    return True

try:
    if extract(sys.argv[1], sys.argv[2]):
        sys.exit(0)
    else:
        print("  ❌ No ZLIB blocks found")
        sys.exit(1)
except Exception as e:
    print(f"  ❌ Error: {e}")
    sys.exit(1)
PYTHON_SCRIPT
    then
        SUCCESS=$((SUCCESS + 1))
    else
        FAILED=$((FAILED + 1))
    fi
    echo ""
done

echo -e "${CYAN}════════════════════════════════════════════════════════════${NC}"
echo -e "${GREEN}Batch extraction complete!${NC}"
echo -e "  Total files: ${#Z_FILES[@]}"
echo -e "  ${GREEN}Success: $SUCCESS${NC}"
if [ $FAILED -gt 0 ]; then
    echo -e "  ${RED}Failed: $FAILED${NC}"
fi
echo -e "${CYAN}════════════════════════════════════════════════════════════${NC}"