"""
Formatting utilities for NimbusFlow CLI.
"""

from typing import Optional
from datetime import datetime
from backend.models.enums import ScheduleStatus

# ANSI color codes for table formatting
class TableColors:
    RESET = '\033[0m'
    BOLD = '\033[1m'
    DIM = '\033[2m'
    BLUE = '\033[94m'
    GREEN = '\033[92m'
    YELLOW = '\033[93m'
    RED = '\033[91m'
    CYAN = '\033[96m'
    WHITE = '\033[97m'
    GREY = '\033[90m'
    
    # Table-specific colors
    HEADER = '\033[1m\033[96m'  # Bold Cyan
    SUCCESS = '\033[1m\033[92m'  # Bold Green
    ERROR = '\033[1m\033[91m'   # Bold Red
    WARNING = '\033[1m\033[93m' # Bold Yellow
    BORDER = '\033[90m'         # Grey
    INPUT_BOX = '\033[90m'      # Grey (for input styling)


def format_member_row(member, classification_name: Optional[str] = None) -> str:
    """Format a member for table display with colors."""
    # Color coding for active status
    if member.IsActive:
        active = f"{TableColors.SUCCESS}✓ Active{TableColors.RESET}"
        name_color = TableColors.BOLD
    else:
        active = f"{TableColors.DIM}✗ Inactive{TableColors.RESET}"
        name_color = TableColors.DIM
    
    classification = classification_name or "N/A"
    email = member.Email or f"{TableColors.DIM}N/A{TableColors.RESET}"
    
    return (f"{TableColors.CYAN}{member.MemberId:3d}{TableColors.RESET} {TableColors.BORDER}│{TableColors.RESET} "
            f"{name_color}{member.FirstName:<12}{TableColors.RESET} {TableColors.BORDER}│{TableColors.RESET} "
            f"{name_color}{member.LastName:<15}{TableColors.RESET} {TableColors.BORDER}│{TableColors.RESET} "
            f"{TableColors.YELLOW}{classification:<12}{TableColors.RESET} {TableColors.BORDER}│{TableColors.RESET} "
            f"{active:<19} {TableColors.BORDER}│{TableColors.RESET} {email}")


def format_schedule_row(schedule, member_name: str = "", service_info: str = "") -> str:
    """Format a schedule for table display with colors."""
    # Color-coded status formatting
    status_enum = ScheduleStatus.from_raw(schedule.Status)
    if status_enum == ScheduleStatus.PENDING:
        status_display = f"{TableColors.WARNING}⏳ Pending{TableColors.RESET}"
    elif status_enum == ScheduleStatus.ACCEPTED:
        status_display = f"{TableColors.SUCCESS}✅ Accepted{TableColors.RESET}"
    elif status_enum == ScheduleStatus.DECLINED:
        status_display = f"{TableColors.ERROR}❌ Declined{TableColors.RESET}"
    else:
        status_display = f"{TableColors.DIM}❓ Unknown{TableColors.RESET}"
    
    # Handle ScheduledAt - could be datetime object or string from DB
    if schedule.ScheduledAt:
        if isinstance(schedule.ScheduledAt, str):
            # If it's a string, try to parse and format it, or use as-is
            try:
                dt_obj = datetime.fromisoformat(schedule.ScheduledAt.replace('Z', '+00:00'))
                scheduled_date = dt_obj.strftime("%Y-%m-%d %H:%M")
            except (ValueError, AttributeError):
                scheduled_date = str(schedule.ScheduledAt)
        else:
            # If it's already a datetime object
            scheduled_date = schedule.ScheduledAt.strftime("%Y-%m-%d %H:%M")
    else:
        scheduled_date = f"{TableColors.DIM}N/A{TableColors.RESET}"
    
    member_display = member_name if member_name else f"{TableColors.DIM}Unknown{TableColors.RESET}"
    service_display = service_info if service_info else f"{TableColors.DIM}Unknown{TableColors.RESET}"
    
    return (f"{TableColors.CYAN}{schedule.ScheduleId:3d}{TableColors.RESET} {TableColors.BORDER}│{TableColors.RESET} "
            f"{status_display:<20} {TableColors.BORDER}│{TableColors.RESET} "
            f"{TableColors.BOLD}{member_display:<20}{TableColors.RESET} {TableColors.BORDER}│{TableColors.RESET} "
            f"{TableColors.BLUE}{service_display:<20}{TableColors.RESET} {TableColors.BORDER}│{TableColors.RESET} {scheduled_date}")


def create_table_header(*columns) -> str:
    """Create a styled table header."""
    header_parts = []
    for i, column in enumerate(columns):
        if i == 0:
            header_parts.append(f"{TableColors.HEADER}{column}{TableColors.RESET}")
        else:
            header_parts.append(f" {TableColors.BORDER}│{TableColors.RESET} {TableColors.HEADER}{column}{TableColors.RESET}")
    return "".join(header_parts)


def create_table_separator(total_width: int) -> str:
    """Create a styled table separator line."""
    return f"{TableColors.BORDER}{'─' * total_width}{TableColors.RESET}"


def format_service_row(service, type_name: str, counts: dict) -> str:
    """Format a service for table display with colors."""
    # Format date properly
    date_str = str(service.ServiceDate) if service.ServiceDate else f"{TableColors.DIM}N/A{TableColors.RESET}"
    
    # Color-code the counts
    total_display = f"{TableColors.BOLD}{counts['total']}{TableColors.RESET}" if counts['total'] > 0 else f"{TableColors.DIM}0{TableColors.RESET}"
    
    pending_display = f"{TableColors.WARNING}{counts['pending']}{TableColors.RESET}" if counts['pending'] > 0 else f"{TableColors.DIM}0{TableColors.RESET}"
    
    accepted_display = f"{TableColors.SUCCESS}{counts['accepted']}{TableColors.RESET}" if counts['accepted'] > 0 else f"{TableColors.DIM}0{TableColors.RESET}"
    
    declined_display = f"{TableColors.ERROR}{counts['declined']}{TableColors.RESET}" if counts['declined'] > 0 else f"{TableColors.DIM}0{TableColors.RESET}"
    
    return (f"{TableColors.CYAN}{service.ServiceId:<3}{TableColors.RESET} {TableColors.BORDER}│{TableColors.RESET} "
            f"{TableColors.BOLD}{date_str:<12}{TableColors.RESET} {TableColors.BORDER}│{TableColors.RESET} "
            f"{TableColors.YELLOW}{type_name:<12}{TableColors.RESET} {TableColors.BORDER}│{TableColors.RESET} "
            f"{total_display:<5} {TableColors.BORDER}│{TableColors.RESET} "
            f"{pending_display:<7} {TableColors.BORDER}│{TableColors.RESET} "
            f"{accepted_display:<8} {TableColors.BORDER}│{TableColors.RESET} {declined_display}")