utils.py

import math

def xp_for_level(level: int) -> int:
    """XP needed to reach a given level (ProBot-style formula)."""
    if level <= 0:
        return 0
    return 5 * (level ** 2) + 50 * level + 100

def total_xp_for_level(level: int) -> int:
    """Cumulative XP from level 0 to reach this level."""
    return sum(xp_for_level(i) for i in range(level))

def level_from_xp(xp: int) -> int:
    """Calculate current level from total XP."""
    level = 0
    while xp >= total_xp_for_level(level + 1):
        level += 1
        if level > 500:
            break
    return level

def xp_progress(xp: int) -> tuple[int, int, int]:
    """Returns (current_level, xp_in_level, xp_needed_for_next)."""
    level = level_from_xp(xp)
    xp_at_level = total_xp_for_level(level)
    xp_in_level = xp - xp_at_level
    xp_needed = xp_for_level(level)
    return level, xp_in_level, xp_needed

def progress_bar(current: int, total: int, length: int = 10) -> str:
    """Generate a text progress bar."""
    filled = int(length * current / total) if total > 0 else 0
    bar = "█" * filled + "░" * (length - filled)
    pct = int(100 * current / total) if total > 0 else 0
    return f"[{bar}] {pct}%"

def format_xp(xp: int) -> str:
    """Format large XP numbers nicely."""
    if xp >= 1_000_000:
        return f"{xp/1_000_000:.1f}M"
    if xp >= 1_000:
        return f"{xp/1_000:.1f}K"
    return str(xp)

def format_time(minutes: int) -> str:
    """Format voice time in minutes."""
    h = minutes // 60
    m = minutes % 60
    if h > 0:
        return f"{h}s {m}d"
    return f"{m} dəqiqə"