#!/usr/bin/env python3
import os
import sys
import subprocess

def get_exif_date(file_path):
    """
    Uses exiftool to extract the File Creation Date/Time (CreateDate).
    Returns the formatted date string or an error message if extraction fails.
    """
    # Use exiftool to extract the CreateDate tag.
    # We use -d to define the desired output format: YYYY-MM-DD HH:MM:SS
    try:
        # Command: exiftool -d "Format" -CreateDate "file_path"
        # The -d option allows specifying the desired output format.
        result = subprocess.run(
            ['exiftool', '-d', "%Y-%m-%d %H:%M:%S", '-CreateDate', file_path],
            capture_output=True,
            text=True,
            check=True
        )
        # The result should contain the date string on the first line.
        date_string = result.stdout.strip()
        if date_string:
            # Clean up potential trailing units or extra metadata lines
            return date_string.split('\n')[0].strip()
        return "Date not found in metadata."
    except subprocess.CalledProcessError as e:
        # This handles cases where exiftool fails (e.g., corrupted file)
        return f"ERROR: exiftool failed. Check file integrity or permissions. (Details: {e.stderr.strip()})"
    except FileNotFoundError:
        # This handles cases where 'exiftool' command is not found
        return "CRITICAL ERROR: exiftool command not found. Please ensure exiftool is installed and in your system PATH."

def scan_photos(root_dir):
    """
    Recursively scans the given directory (root_dir), extracts EXIF date, and prints file details.
    """
    # Define accepted extensions (in lowercase)
    accepted_extensions = (
        '.jpg', '.jpeg', '.dng', '.raw', '.cr2', '.cr3', '.raf'
    )
    
    print(f"--- Starting photo scan in: {root_dir} ---")
    found_files = []

    # 1. Find all files
    try:
        for foldername, subfolders, filenames in os.walk(root_dir):
            for filename in filenames:
                full_path = os.path.join(foldername, filename)
                
                # Check the file extension
                _, ext = os.path.splitext(filename)
                
                # Convert extension to lowercase for case-insensitive matching
                if ext.lower() in accepted_extensions:
                    found_files.append(full_path)
    
    except FileNotFoundError:
        print(f"\nFATAL ERROR: The path '{root_dir}' was not found. Please check the drive letter.")
        return
    except Exception as e:
        print(f"\nAN UNEXPECTED ERROR OCCURRED DURING DIRECTORY TRAVERSAL: {e}")
        return

    if found_files:
        print("\n========================================================")
        print("--- File Name & Creation Date/Time ---")
        print("========================================================\n")
        
        processed_count = 0
        for file_path in found_files:
            # Extract the date using the external tool
            date_time = get_exif_date(file_path)
            
            # Print the file name and the date/time
            print(f"File Name: {os.path.basename(file_path)}")
            print(f"Creation Date/Time: {date_time}")
            print("-" * 40)
            processed_count += 1
        
        print(f"\n========================================================")
        print(f"--- Scan complete. Processed {processed_count} files. ---")
    else:
        print("\n--- Scan complete. No specified photo files found in this directory or its subdirectories. ---")


if __name__ == "__main__":
    # Check if two arguments are provided (script name + drive + path)
    if len(sys.argv) != 3:
        print("Usage: python photoimport.py <drive_path> <target_display_path>")
        print("Example (for Windows): python photoimport.py Q:\\ I:\\Photos")
        sys.exit(1)

    # Argument 1: The directory to scan (the drive)
    root_scan_dir = sys.argv[1]
    # Argument 2: The path to display to the user
    target_display_path = sys.argv[2]
    
    # Echo the specified path
    print(f"Using path: {target_display_path}")

    # Ensure the scanning path ends with a directory separator
    if not root_scan_dir.endswith(os.sep):
        root_scan_dir = root_scan_dir + os.sep
        
    # Perform the scan using the first argument (the drive)
    scan_photos(root_scan_dir)