import os
from dotenv import load_dotenv

# Ensure .env is loaded from the script's directory (VS Code fix)
load_dotenv(os.path.join(os.path.dirname(os.path.abspath(__file__)), ".env"))

def get_clean_env(key, default=None):
    val = os.getenv(key, default)
    return val.strip() if val else None

API_KEY = get_clean_env("GEMINI_API_KEY")
GCP_PROJECT = get_clean_env("GCP_PROJECT")
GCP_LOCATION = get_clean_env("GCP_LOCATION", "us-central1")
MODEL_LOGIC_HINT = get_clean_env("MODEL_LOGIC", "AUTO")
MODEL_WRITER_HINT = get_clean_env("MODEL_WRITER", "AUTO")
MODEL_ARTIST_HINT = get_clean_env("MODEL_ARTIST", "AUTO")
MODEL_IMAGE_HINT = get_clean_env("MODEL_IMAGE", "AUTO")
DEFAULT_BLUEPRINT = "book_def.json"

# --- SECURITY & ADMIN ---
FLASK_SECRET = get_clean_env("FLASK_SECRET_KEY", "dev-secret-key-change-this")
ADMIN_USER = get_clean_env("ADMIN_USERNAME")
ADMIN_PASSWORD = get_clean_env("ADMIN_PASSWORD")

if FLASK_SECRET == "dev-secret-key-change-this":
    print("⚠️ WARNING: Using default FLASK_SECRET_KEY. This is insecure for production.")

if not API_KEY: raise ValueError("❌ CRITICAL ERROR: GEMINI_API_KEY not found.")

# --- DATA DIRECTORIES ---
BASE_DIR = os.path.dirname(os.path.abspath(__file__))
DATA_DIR = os.path.join(BASE_DIR, "data")
PROJECTS_DIR = os.path.join(DATA_DIR, "projects")
PERSONAS_DIR = os.path.join(DATA_DIR, "personas")
PERSONAS_FILE = os.path.join(PERSONAS_DIR, "personas.json")
FONTS_DIR = os.path.join(DATA_DIR, "fonts")

# --- ENSURE DIRECTORIES EXIST ---
# Critical: Create data folders immediately to prevent DB initialization errors
for d in [DATA_DIR, PROJECTS_DIR, PERSONAS_DIR, FONTS_DIR]:
    if not os.path.exists(d): os.makedirs(d, exist_ok=True)

# --- AUTHENTICATION ---
GOOGLE_CREDS = os.getenv("GOOGLE_APPLICATION_CREDENTIALS")
if GOOGLE_CREDS:
    # Resolve to absolute path relative to this config file if not absolute
    if not os.path.isabs(GOOGLE_CREDS):
        base = os.path.dirname(os.path.abspath(__file__))
        GOOGLE_CREDS = os.path.join(base, GOOGLE_CREDS)

    if os.path.exists(GOOGLE_CREDS):
        os.environ["GOOGLE_APPLICATION_CREDENTIALS"] = GOOGLE_CREDS
    else:
        print(f"⚠️ Warning: GOOGLE_APPLICATION_CREDENTIALS file not found at: {GOOGLE_CREDS}")

# --- DEFINITIONS ---
LENGTH_DEFINITIONS = {
    "01": {"label": "Chapter Book", "words": "5,000 - 10,000", "chapters": 10, "depth": 1},
    "1": {"label": "Flash Fiction", "words": "500 - 1,500", "chapters": 1, "depth": 1},
    "2": {"label": "Short Story", "words": "5,000 - 10,000", "chapters": 5, "depth": 1},
    "2b": {"label": "Young Adult", "words": "50,000 - 70,000", "chapters": 25, "depth": 3},
    "3": {"label": "Novella", "words": "20,000 - 40,000", "chapters": 15, "depth": 2},
    "4": {"label": "Novel", "words": "60,000 - 80,000", "chapters": 30, "depth": 3},
    "5": {"label": "Epic", "words": "100,000+", "chapters": 50, "depth": 4}
}

# --- SYSTEM ---
VERSION = "1.4.0"