import json
import os
from datetime import datetime
from utils.config import OUTPUT_DIR

HISTORY_FILE = os.path.join(OUTPUT_DIR, "history.json")

def load_history():
    """Load podcast generation history from JSON file"""
    if not os.path.exists(HISTORY_FILE):
        return []

    try:
        with open(HISTORY_FILE, 'r') as f:
            return json.load(f)
    except Exception as e:
        print(f"Error loading history: {e}")
        return []

def save_to_history(url, audio_path, script_length):
    """Save a podcast generation to history"""
    history = load_history()

    entry = {
        "url": url,
        "audio_path": audio_path,
        "script_length": script_length,
        "timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S"),
        "audio_filename": os.path.basename(audio_path)
    }

    history.append(entry)

    try:
        with open(HISTORY_FILE, 'w') as f:
            json.dump(history, f, indent=2)
        print(f"✓ Saved to history: {url}")
    except Exception as e:
        print(f"Error saving to history: {e}")

def get_history_items():
    """Get history items formatted for Gradio display"""
    history = load_history()

    if not history:
        return []

    # Return in reverse order (newest first)
    items = []
    for entry in reversed(history):
        items.append({
            "timestamp": entry["timestamp"],
            "url": entry["url"],
            "audio_path": entry["audio_path"],
            "script_length": entry.get("script_length", "N/A")
        })

    return items