app_logic.py

import os
import re
import tempfile
import shutil
import git
import re

from huggingface_hub import (
    create_repo,
    upload_folder,
    list_repo_files,
    Repository,
    whoami,
    hf_hub_download, # New import
)
import logging
from pathlib import Path
from PIL import Image 

try:
    from keylock_decode import decode_from_image_pil
    KEYLOCK_DECODE_AVAILABLE = True
except ImportError:
    KEYLOCK_DECODE_AVAILABLE = False
    decode_from_image_pil = None
    logging.warning("keylock-decode library not found. KeyLock Wallet image feature will be disabled.")

logging.basicConfig(
    level=logging.INFO, 
    format="%(asctime)s - %(name)s - %(levelname)s - %(message)s"
)
logger = logging.getLogger(__name__)

# --- Helper Function to Get API Token (Unchanged) ---
def _get_api_token(ui_token_from_textbox=None):
    env_token = os.getenv('HF_TOKEN')
    if env_token: return env_token, None
    if ui_token_from_textbox: return ui_token_from_textbox, None
    return None, "Error: Hugging Face API token not provided."

# --- `load_token_from_image_and_set_env` (Unchanged - Terminology and debug logic as before) ---
def load_token_from_image_and_set_env(image_pil_object: Image.Image, password: str):
    if not KEYLOCK_DECODE_AVAILABLE: return "Error: KeyLock-Decode library is not installed."
    if image_pil_object is None: return "Error: No KeyLock Wallet image provided."
    if not password: return "Error: Password cannot be empty."
    status_messages_display = []
    # ... (rest of the function, ensure debug logic is as intended or removed)
    try:
        logger.info(f"Attempting to decode from KeyLock Wallet image...")
        decoded_data, status_msgs_from_lib = decode_from_image_pil(image_pil_object, password, set_environment_variables=True)
        status_messages_display.extend(status_msgs_from_lib)
        if decoded_data:
            status_messages_display.append("\n**Decoded Data Summary (sensitive values masked):**")
            for key, value in decoded_data.items():
                display_value = '********' if any(k_word in key.upper() for k_word in ['TOKEN', 'KEY', 'SECRET', 'PASS']) else value
                status_messages_display.append(f"- {key}: {display_value}")
            if os.getenv('HF_TOKEN'): status_messages_display.append(f"\n**SUCCESS: HF_TOKEN set from KeyLock Wallet image.**")
            # ... (other status messages)
    except ValueError as e: status_messages_display.append(f"**Decoding Error:** {e}")
    except Exception as e: status_messages_display.append(f"**Unexpected decoding error:** {str(e)}")
    return "\n".join(status_messages_display)



'''def process_commented_markdown(commented_input):
    """Process a commented markdown string by stripping '# ' from each line if '# # Space:' is present."""
    lines = commented_input.strip().split("\n")
    print(type(lines))
    # Check for '# # Space:' or variations (e.g., '# Space:') in any line
    if any( "# # Space:" in line.strip() for line in lines):
        print("YES")
        cleaned_lines = [line.lstrip("# ") for line in lines]
        return cleaned_lines
    return lines'''

def process_commented_markdown(commented_input):
    """Process a commented markdown string by stripping '# ' from each line if '# # Space:' is present."""
    lines = commented_input.strip().split("\n")
    print(type(lines)) # Original debug print
    # Check for '# # Space:' or variations (e.g., '# Space:') in any line
    if any( "# # Space:" in line.strip() for line in lines):
        print("YES") # Original debug print
        
        cleaned_lines = [line[2:] if line.startswith("# ") else line for line in lines]
        
        return cleaned_lines
    return lines

def parse_markdown(markdown_input):
    space_info = {"repo_name_md": "", "owner_md": "", "files": []}
    current_file_path = None; current_file_content_lines = []
    in_file_definition = False; in_code_block = False
    print(markdown_input)
    lines = process_commented_markdown(markdown_input)
    print(lines)
    #lines = markdown_input.strip().split("\n")
    
    for line_content_orig in lines:
        line_content_stripped = line_content_orig.strip()
        if line_content_stripped.startswith("### File:"):
            if current_file_path and in_file_definition:
                space_info["files"].append({"path": current_file_path, "content": "\n".join(current_file_content_lines)})
            current_file_path = line_content_stripped.replace("### File:", "").strip()
            current_file_content_lines = []
            in_file_definition = True; in_code_block = False
            continue
        if not in_file_definition:
            if line_content_stripped.startswith("# Space:"):
                full_space_name_md = line_content_stripped.replace("# Space:", "").strip()
                if "/" in full_space_name_md: space_info["owner_md"], space_info["repo_name_md"] = full_space_name_md.split("/", 1)
                else: space_info["repo_name_md"] = full_space_name_md
            continue
        if line_content_stripped.startswith("```"):
            in_code_block = not in_code_block
            continue
        current_file_content_lines.append(line_content_orig)
    if current_file_path and in_file_definition:
        space_info["files"].append({"path": current_file_path, "content": "\n".join(current_file_content_lines)})
    space_info["files"] = [f for f in space_info["files"] if f.get("path")]
    return space_info



# --- `_determine_repo_id` (Unchanged) ---
def _determine_repo_id(ui_api_token_from_textbox, space_name_ui, owner_ui):
    if not space_name_ui: return None, "Error: Space Name cannot be empty."
    if "/" in space_name_ui: return None, "Error: Space Name should not contain '/'. Use Owner field."
    final_owner = owner_ui; error_message = None
    if not final_owner:
        resolved_api_token, token_err = _get_api_token(ui_api_token_from_textbox)
        if token_err: return None, token_err 
        if not resolved_api_token: return None, "Error: API token required for auto owner determination."
        try:
            user_info = whoami(token=resolved_api_token)
            if user_info and 'name' in user_info: final_owner = user_info['name']
            else: error_message = "Error: Could not retrieve username. Check token/permissions or specify Owner."
        except Exception as e: error_message = f"Error retrieving username: {str(e)}. Specify Owner."
        if error_message: return None, error_message
    if not final_owner: return None, "Error: Owner could not be determined."
    return f"{final_owner}/{space_name_ui}", None


# --- New Function to Fetch File Content from Hub ---
def get_space_file_content(ui_api_token_from_textbox, space_name_ui, owner_ui, file_path_in_repo):
    """Fetches content of a specific file from a Hugging Face Space."""
    repo_id_for_error_logging = f"{owner_ui}/{space_name_ui}" if owner_ui else space_name_ui
    try:
        resolved_api_token, token_err = _get_api_token(ui_api_token_from_textbox)
        if token_err:
            return None, token_err # Return error as second element for consistency

        repo_id, err = _determine_repo_id(ui_api_token_from_textbox, space_name_ui, owner_ui)
        if err:
            return None, err
        repo_id_for_error_logging = repo_id
        
        if not file_path_in_repo:
            return None, "Error: File path cannot be empty."

        logger.info(f"Attempting to download file: {file_path_in_repo} from Space: {repo_id}")
        downloaded_file_path = hf_hub_download(
            repo_id=repo_id,
            filename=file_path_in_repo,
            repo_type="space",
            token=resolved_api_token,
            # revision="main", # Optional: specify a branch/commit
            # cache_dir=... # Optional: manage cache
        )
        
        content = Path(downloaded_file_path).read_text(encoding="utf-8")
        logger.info(f"Successfully downloaded and read file: {file_path_in_repo} from {repo_id}")
        return content, None # Return content and no error
        
    except Exception as e:
        # Catch specific huggingface_hub.utils.HFValidationError for not found etc.
        if "404" in str(e) or "not found" in str(e).lower():
             logger.warning(f"File not found {file_path_in_repo} in {repo_id_for_error_logging}: {e}")
             return None, f"Error: File '{file_path_in_repo}' not found in Space '{repo_id_for_error_logging}'."
        logger.exception(f"Error fetching file content for {file_path_in_repo} from {repo_id_for_error_logging}:")
        return None, f"Error fetching file content: {str(e)}"

# --- Function to list files (reused, but now distinct from fetching content) ---
def list_space_files_for_browsing(ui_api_token_from_textbox, space_name_ui, owner_ui):
    """Lists files in a Hugging Face Space, returns list or error."""
    repo_id_for_error_logging = f"{owner_ui}/{space_name_ui}" if owner_ui else space_name_ui
    try:
        resolved_api_token, token_err = _get_api_token(ui_api_token_from_textbox)
        if token_err: return None, token_err
        
        repo_id, err = _determine_repo_id(ui_api_token_from_textbox, space_name_ui, owner_ui)
        if err: return None, err
        repo_id_for_error_logging = repo_id
            
        files = list_repo_files(repo_id=repo_id, token=resolved_api_token, repo_type="space")
        if not files:
            return [], f"No files found in Space `{repo_id}`." # Return empty list and info message
        return files, None # Return list of files and no error
    except Exception as e:
        logger.exception(f"Error listing files for {repo_id_for_error_logging}:")
        return None, f"Error listing files for `{repo_id_for_error_logging}`: {str(e)}"


# --- Core Functions: `create_space`, `update_space_file` (Unchanged from previous correct versions) ---
def create_space(ui_api_token_from_textbox, space_name_ui, owner_ui, sdk_ui, markdown_input):
    repo_id_for_error_logging = f"{owner_ui}/{space_name_ui}" if owner_ui else space_name_ui
    try:
        resolved_api_token, token_err = _get_api_token(ui_api_token_from_textbox)
        if token_err: return token_err
        repo_id, err = _determine_repo_id(ui_api_token_from_textbox, space_name_ui, owner_ui)
        if err: return err
        repo_id_for_error_logging = repo_id
        space_info = parse_markdown(markdown_input)
        if not space_info["files"]: return "Error: No files found in markdown."
        with tempfile.TemporaryDirectory() as temp_dir:
            repo_staging_path = Path(temp_dir) / "repo_staging_content"
            repo_staging_path.mkdir(exist_ok=True)
            for file_info in space_info["files"]:
                if not file_info.get("path"): continue
                file_path_abs = repo_staging_path / file_info["path"]
                file_path_abs.parent.mkdir(parents=True, exist_ok=True)
                with open(file_path_abs, "w", encoding="utf-8") as f: f.write(file_info["content"])
            try:
                create_repo(repo_id=repo_id, token=resolved_api_token, repo_type="space", space_sdk=sdk_ui, private=False)
            except Exception as e:
                err_str = str(e).lower()
                if not ("already exists" in err_str or "you already created this repo" in err_str or "exists" in err_str):
                    return f"Error creating Space '{repo_id}': {str(e)}"
            upload_folder(repo_id=repo_id, folder_path=str(repo_staging_path), path_in_repo=".", token=resolved_api_token, repo_type="space", commit_message=f"Initial Space setup of {repo_id} via Builder")
            return f"Successfully created/updated Space: [{repo_id}](https://huggingface.co/spaces/{repo_id})"
    except Exception as e:
        logger.exception(f"Error in create_space for {repo_id_for_error_logging}:")
        return f"Error during Space creation/update: {str(e)}"

def update_space_file(ui_api_token_from_textbox, space_name_ui, owner_ui, file_path_in_repo, file_content, commit_message_ui):
    repo_id_for_error_logging = f"{owner_ui}/{space_name_ui}" if owner_ui else space_name_ui
    try:
        resolved_api_token, token_err = _get_api_token(ui_api_token_from_textbox)
        if token_err: return token_err
        repo_id, err = _determine_repo_id(ui_api_token_from_textbox, space_name_ui, owner_ui)
        if err: return err
        repo_id_for_error_logging = repo_id
        if not file_path_in_repo: return "Error: File Path to update cannot be empty."
        file_path_in_repo = file_path_in_repo.lstrip('/').replace(os.sep, '/')
        commit_message_ui = commit_message_ui or f"Update {file_path_in_repo} via Space Builder"
        with tempfile.TemporaryDirectory() as temp_dir_for_update:
            repo_local_clone_path = Path(temp_dir_for_update) / "update_clone"
            cloned_repo = Repository(local_dir=str(repo_local_clone_path), clone_from=f"https://huggingface.co/spaces/{repo_id}", repo_type="space", use_auth_token=resolved_api_token, git_user="Space Builder Bot", git_email="space-builder@huggingface.co")
            full_local_file_path = Path(cloned_repo.local_dir) / file_path_in_repo
            full_local_file_path.parent.mkdir(parents=True, exist_ok=True)
            with open(full_local_file_path, "w", encoding="utf-8") as f: f.write(file_content)
            cloned_repo.push_to_hub(commit_message=commit_message_ui)
            return f"Successfully updated `{file_path_in_repo}` in Space [{repo_id}](https://huggingface.co/spaces/{repo_id})"
    except Exception as e:
        logger.exception(f"Error in update_space_file for {repo_id_for_error_logging}, file {file_path_in_repo}:")
        return f"Error updating file for `{repo_id_for_error_logging}`: {str(e)}"