export interface ThemeColors {
  gold:     string
  amber:    string
  bronze:   string
  cornsilk: string
  dim:      string

  label:    string
  ok:       string
  error:    string
  warn:     string

  statusBg:       string
  statusFg:       string
  statusGood:     string
  statusWarn:     string
  statusBad:      string
  statusCritical: string
}

export interface ThemeBrand {
  name:    string
  icon:    string
  prompt:  string
  welcome: string
  goodbye: string
  tool:    string
}

export interface Theme {
  color: ThemeColors
  brand: ThemeBrand
}


export const DEFAULT_THEME: Theme = {
  color: {
    gold:     '#FFD700',
    amber:    '#FFBF00',
    bronze:   '#CD7F32',
    cornsilk: '#FFF8DC',
    dim:      '#B8860B',

    label:    '#4dd0e1',
    ok:       '#4caf50',
    error:    '#ef5350',
    warn:     '#ffa726',

    statusBg:       '#1a1a2e',
    statusFg:       '#C0C0C0',
    statusGood:     '#8FBC8F',
    statusWarn:     '#FFD700',
    statusBad:      '#FF8C00',
    statusCritical: '#FF6B6B',
  },

  brand: {
    name:    'Hermes Agent',
    icon:    '⚕',
    prompt:  '❯',
    welcome: 'Type your message or /help for commands.',
    goodbye: 'Goodbye! ⚕',
    tool:    '┊',
  },
}


export function fromSkin(
  colors:   Record<string, string>,
  branding: Record<string, string>,
): Theme {
  const d = DEFAULT_THEME
  const c = (k: string) => colors[k]

  return {
    color: {
      gold:     c('banner_title')   ?? d.color.gold,
      amber:    c('banner_accent')  ?? d.color.amber,
      bronze:   c('banner_border')  ?? d.color.bronze,
      cornsilk: c('banner_text')    ?? d.color.cornsilk,
      dim:      c('banner_dim')     ?? d.color.dim,

      label:    c('ui_label')  ?? d.color.label,
      ok:       c('ui_ok')     ?? d.color.ok,
      error:    c('ui_error')  ?? d.color.error,
      warn:     c('ui_warn')   ?? d.color.warn,

      statusBg:       d.color.statusBg,
      statusFg:       d.color.statusFg,
      statusGood:     c('ui_ok')    ?? d.color.statusGood,
      statusWarn:     c('ui_warn')  ?? d.color.statusWarn,
      statusBad:      d.color.statusBad,
      statusCritical: d.color.statusCritical,
    },

    brand: {
      name:    branding.agent_name    ?? d.brand.name,
      icon:    d.brand.icon,
      prompt:  branding.prompt_symbol ?? d.brand.prompt,
      welcome: branding.welcome       ?? d.brand.welcome,
      goodbye: branding.goodbye       ?? d.brand.goodbye,
      tool:    d.brand.tool,
    },
  }
}