/**
 * Color theme and styling utilities for ModelGrid CLI
 * Uses Deno standard library colors module
 */
import * as colors from '@std/fmt/colors';

/**
 * Color theme for consistent CLI styling
 */
export const theme = {
  // Message types
  error: colors.red,
  warning: colors.yellow,
  success: colors.green,
  info: colors.cyan,
  dim: colors.dim,
  highlight: colors.bold,

  // Status indicators
  statusActive: (text: string) => colors.green(colors.bold(text)),
  statusInactive: (text: string) => colors.red(text),
  statusWarning: (text: string) => colors.yellow(text),
  statusUnknown: (text: string) => colors.dim(text),

  // GPU status colors
  gpuHealthy: colors.green, // GPU healthy
  gpuWarning: colors.yellow, // GPU warning
  gpuError: colors.red, // GPU error

  // VRAM usage colors
  vramGood: colors.green, // < 60% usage
  vramMedium: colors.yellow, // 60-85% usage
  vramCritical: colors.red, // > 85% usage

  // Container status colors
  containerRunning: colors.green,
  containerStopped: colors.red,
  containerStarting: colors.yellow,

  // Box borders
  borderSuccess: colors.green,
  borderError: colors.red,
  borderWarning: colors.yellow,
  borderInfo: colors.cyan,
  borderDefault: (text: string) => text, // No color

  // Command/code highlighting
  command: colors.cyan,
  code: colors.dim,
  path: colors.blue,
  model: colors.magenta,
};

/**
 * Status symbols with colors
 */
export const symbols = {
  success: colors.green('✓'),
  error: colors.red('✗'),
  warning: colors.yellow('⚠'),
  info: colors.cyan('ℹ'),
  running: colors.green('●'),
  stopped: colors.red('○'),
  starting: colors.yellow('◐'),
  unknown: colors.dim('◯'),
  gpu: colors.cyan('◆'),
  container: colors.blue('▣'),
  model: colors.magenta('◈'),
};

/**
 * Get color for VRAM usage percentage
 */
export function getVramColor(percentage: number): (text: string) => string {
  if (percentage < 60) return theme.vramGood;
  if (percentage < 85) return theme.vramMedium;
  return theme.vramCritical;
}

/**
 * Get color for GPU utilization
 */
export function getGpuUtilColor(percentage: number): (text: string) => string {
  if (percentage < 60) return theme.gpuHealthy;
  if (percentage < 85) return theme.gpuWarning;
  return theme.gpuError;
}

/**
 * Format GPU vendor with color
 */
export function formatGpuVendor(vendor: 'nvidia' | 'amd' | 'intel' | 'unknown'): string {
  switch (vendor) {
    case 'nvidia':
      return colors.green('NVIDIA');
    case 'amd':
      return colors.red('AMD');
    case 'intel':
      return colors.blue('Intel');
    case 'unknown':
    default:
      return colors.dim('Unknown');
  }
}

/**
 * Format container status with color
 */
export function formatContainerStatus(
  status: 'running' | 'stopped' | 'starting' | 'error' | 'unknown',
): string {
  switch (status) {
    case 'running':
      return theme.containerRunning('Running');
    case 'stopped':
      return theme.containerStopped('Stopped');
    case 'starting':
      return theme.containerStarting('Starting');
    case 'error':
      return theme.error('Error');
    case 'unknown':
    default:
      return theme.dim('Unknown');
  }
}

/**
 * Format container type with color
 */
export function formatContainerType(type: 'ollama' | 'vllm' | 'tgi' | 'custom'): string {
  switch (type) {
    case 'ollama':
      return colors.green('Ollama');
    case 'vllm':
      return colors.cyan('vLLM');
    case 'tgi':
      return colors.magenta('TGI');
    case 'custom':
      return colors.yellow('Custom');
  }
}

/**
 * Format model status with color
 */
export function formatModelStatus(status: 'loaded' | 'loading' | 'unloaded' | 'error'): string {
  switch (status) {
    case 'loaded':
      return theme.success('Loaded');
    case 'loading':
      return theme.warning('Loading');
    case 'unloaded':
      return theme.dim('Unloaded');
    case 'error':
      return theme.error('Error');
  }
}