import type { AgentNodeData } from '../types/agentNode'
import type { AgentDetailData, ThinkingItem } from '../types/agentDetail'
import type { DashboardAgentDto, ModelDto } from '../services/agentService'

const STATUS_LABELS: Record<AgentNodeData['status'], string> = {
  work: 'Arbeitet',
  think: 'Plant',
  idle: 'Bereit',
  block: 'Blockiert',
}

interface CatalogEntry {
  elapsed: string
  think: string | null
  next: string
}

const AGENT_CATALOG: Record<string, CatalogEntry> = {
  iris:       { elapsed: '--', think: null, next: 'Standby' },
  programmer: { elapsed: '--', think: null, next: 'Standby' },
  developer:  { elapsed: '--', think: null, next: 'Standby' },
  architekt:  { elapsed: '--', think: null, next: 'Standby' },
  reviewer:   { elapsed: '--', think: null, next: 'Standby' },
  executor:   { elapsed: '--', think: null, next: 'Standby' },
  researcher: { elapsed: '--', think: null, next: 'Standby' },
}

function resolveStatus(isActive: boolean, currentTask: string | null): AgentNodeData['status'] {
  if (!isActive) return 'idle'
  if (currentTask && currentTask !== 'Idle') return 'work'
  return 'think'
}

function resolveAvatar(id: string, name: string): string {
  if (id === 'iris') return 'IR'
  if (id === 'programmer' || id === 'developer') return '</>'
  return name.slice(0, 2).toUpperCase()
}

function buildThinkingItems(data: AgentNodeData): ThinkingItem[] {
  if (!data.think) return []
  const now = new Date()
  const ts = (ago: number) => {
    const d = new Date(now.getTime() - ago * 1000)
    return d.toLocaleTimeString('de-DE', { hour: '2-digit', minute: '2-digit', second: '2-digit' })
  }
  const sentences = data.think.split(/[.…!?]+/).filter(s => s.trim().length > 5)

  if (sentences.length >= 2) {
    const items: ThinkingItem[] = [
      { type: 'thought', text: sentences[0].trim() + '.', ts: ts(30) },
      { type: 'action',  text: sentences[1].trim() + '…', ts: ts(18) },
    ]
    const lastSentence = sentences.length >= 3
      ? sentences[sentences.length - 1].trim() + '.'
      : 'Verarbeitung abgeschlossen.'
    items.push({ type: 'result', text: lastSentence, ts: ts(3) })
    return items
  }
  if (sentences.length === 1) {
    return [
      { type: 'thought', text: sentences[0].trim(), ts: ts(15) },
      { type: 'action',  text: 'Analysiere Daten und erstelle nächsten Schritt…', ts: ts(6) },
    ]
  }
  return [{ type: 'thought', text: data.think, ts: ts(10) }]
}

export function toAgentNode(dto: DashboardAgentDto): AgentNodeData {
  const cat = AGENT_CATALOG[dto.id] ?? AGENT_CATALOG['reviewer']!
  const status = resolveStatus(dto.isActive, dto.currentTask)
  return {
    id: dto.id,
    name: dto.name,
    role: dto.role,
    model: dto.model,
    avatar: resolveAvatar(dto.id, dto.name),
    status,
    statusLabel: STATUS_LABELS[status],
    task: dto.currentTask,
    goal: dto.goal ?? null,
    progress: dto.progress ?? 0,
    elapsed: cat.elapsed,
    next: cat.next,
    tokens: '0',
    cost: '0.00',
    think: cat.think,
  }
}

export function toModelAlias(dtos: ModelDto[]): { id: string; alias: string }[] {
  return dtos.map(m => ({ id: m.id, alias: m.name }))
}

export function toAgentDetail(
  data: AgentNodeData,
  models: { id: string; alias: string }[]
): AgentDetailData {
  const tokenNum = parseFloat(data.tokens?.replace(/[^0-9.]/g, '') || '0')
  const tokenMultiplier = data.tokens?.includes('M')
    ? 1_000_000
    : data.tokens?.includes('k') ? 1_000 : 1
  const tokensToday = Math.round(tokenNum * tokenMultiplier)

  const matchingModel = models.find(m => m.id === data.model || m.alias === data.model)
  const displayModel = matchingModel?.alias ?? data.model

  return {
    id: data.id,
    name: data.name,
    role: data.role,
    model: displayModel,
    status: data.status === 'block' ? 'idle' : data.status,
    tokensToday,
    costToday: parseFloat(data.cost || '0'),
    workload: data.progress,
    uptime: data.elapsed || '—',
    lastActive: data.elapsed !== '—' ? 'Vor ' + data.elapsed : 'Nicht aktiv',
    activeTaskCount: data.task ? 1 : 0,
    thinking: buildThinkingItems(data),
    availableModels: models,
  }
}