import {
  createQuest, createQuestDay, createQuestPoint,
  updateQuestStatus, updateDayStatus,
  getActiveDayForQuest, getPointsForDay,
} from '../../api/_lib/db.js'
import { aiService } from './ai.service.js'

interface OnboardingData {
  userId: string
  cityId: string
  cityName: string
  days: number
  companions: string
  pace: string
  userComment?: string
  lang: string
}

export async function createQuestFromOnboarding(data: OnboardingData) {
  try {
    // Generate quest plan via AI
    const plan = await aiService.generateQuestPlan({
      city: data.cityName,
      days: data.days,
      companions: data.companions,
      pace: data.pace,
      userComment: data.userComment,
      lang: data.lang,
    })

    // Create quest in DB
    const quest = await createQuest({
      city_id: data.cityId,
      user_id: data.userId,
      title: plan.title,
      description: plan.description,
      number_of_days: data.days,
      pace: data.pace,
      companions: data.companions,
      user_comment: data.userComment,
    })

    // Create day skeletons
    const days = []
    for (let i = 0; i < data.days; i++) {
      const day = await createQuestDay({
        quest_id: quest.id,
        day_number: i + 1,
        theme: plan.dayThemes[i] || undefined,
      })
      days.push(day)
    }

    // Start the quest and first day
    await updateQuestStatus(quest.id, 'in_progress')
    await updateDayStatus(days[0].id, 'in_progress')

    // Generate first point
    const firstPoint = await aiService.generatePoint({
      city: data.cityName,
      dayNumber: 1,
      totalDays: data.days,
      dayTheme: plan.dayThemes[0] || '',
      pace: data.pace,
      companions: data.companions,
      userComment: data.userComment,
      previousPoints: [],
      lang: data.lang,
    })

    await createQuestPoint({
      day_id: days[0].id,
      title: firstPoint.title,
      location_lat: firstPoint.locationLat,
      location_lon: firstPoint.locationLon,
      teaser_text: firstPoint.teaserText,
      order_in_day: 1,
      status: 'active',
    })

    return {
      questId: quest.id,
      title: plan.title,
      description: plan.description,
    }
  } catch (error) {
    console.error('Failed to create quest from onboarding:', error)
    return null
  }
}

export async function generateNextPoint(questId: string, questContext: {
  city: string
  dayNumber: number
  totalDays: number
  dayTheme: string
  pace: string
  companions: string
  userComment?: string
  lang: string
}) {
  try {
    const day = await getActiveDayForQuest(questId)
    if (!day) return null

    const existingPoints = await getPointsForDay(day.id)
    const previousPoints = existingPoints.map((p: { title: string }) => p.title)
    const maxOrder = existingPoints.reduce((max: number, p: { order_in_day?: number }) => Math.max(max, p.order_in_day || 0), 0)
    const nextOrder = maxOrder + 1

    const point = await aiService.generatePoint({
      ...questContext,
      previousPoints,
    })

    const created = await createQuestPoint({
      day_id: day.id,
      title: point.title,
      location_lat: point.locationLat,
      location_lon: point.locationLon,
      teaser_text: point.teaserText,
      order_in_day: nextOrder,
      status: 'active',
    })

    return { point: created, isLastOfDay: point.isLastPointOfDay }
  } catch (error) {
    console.error('Failed to generate next point:', error)
    return null
  }
}

export async function generatePointContent(pointId: string, context: {
  city: string
  pointTitle: string
  dayNumber: number
  companions: string
  pace: string
  lang: string
}) {
  try {
    const content = await aiService.generatePointContent(context)
    const { updatePointContent } = await import('../../api/_lib/db.js')
    await updatePointContent(pointId, content.contentText)
    return content
  } catch (error) {
    console.error('Failed to generate point content:', error)
    return null
  }
}