import { ref } from 'vue'
import type { Film, Song, Podcast, Book, TVSeries, ImageItem, Place } from '@aiui/core/types/content'
import type { WebSearchResult } from '@aiui/core/types/message'
import { mockFilms } from '@/mocks/films'
import { mockSongs } from '@/mocks/songs'
import { mockPodcasts } from '@/mocks/podcasts'
import { fetchRssFromUrls } from '@/composables/useRssFetch'
import {
  extractAllFilms, extractAllSongs, extractAllPodcasts, extractAllBooks,
  extractAllTVSeries, extractAllImages, extractAllPlaces,
  extractMagazineSections, extractMagazineHeroImage,
  extractMarkdownLinks, extractBoldDomainLinks, mergeNewsResults,
  extractFilmIds, extractSongIds, extractPodcastIds,
  stripFilmTags, stripSongTags, stripPodcastTags, stripContentTags, stripMarkdownLinks,
} from './contentExtraction'
import {
  isNewsQuery, isNewsLikeResponse, isTVQuery,
  filterTabsByContext, extractQueryContext,
} from './contentFiltering'
export type { ContentTab, MagazineSection } from './contentFiltering'
import type { ContentTab, MagazineSection } from './contentFiltering'

const panelOpen = ref(false)
const panelFilms = ref<Film[]>([])
const panelBooks = ref<Book[]>([])
const panelTVSeries = ref<TVSeries[]>([])
const panelWebResults = ref<WebSearchResult[]>([])
const panelRssArticles = ref<WebSearchResult[]>([])
const panelWebsites = ref<WebSearchResult[]>([])
const panelMagazineSections = ref<MagazineSection[]>([])
const panelMagazineHeroImage = ref<string | null>(null)
const panelSongs = ref<Song[]>([])
const panelPodcasts = ref<Podcast[]>([])
const panelImages = ref<ImageItem[]>([])
const panelPlaces = ref<Place[]>([])
const selectedFilm = ref<Film | null>(null)
const selectedBook = ref<Book | null>(null)
const selectedTVSeries = ref<TVSeries | null>(null)
const selectedSong = ref<Song | null>(null)
const selectedPodcast = ref<Podcast | null>(null)
const selectedArticle = ref<WebSearchResult | null>(null)
const selectedImage = ref<ImageItem | null>(null)
const selectedPlace = ref<Place | null>(null)
const selectedWebsite = ref<WebSearchResult | null>(null)
const selectedMagazineSection = ref<MagazineSection | null>(null)
const magazineSectionIndex = ref(0)
const panelTitle = ref('Recommended Films')
const panelQuery = ref('')
const contentType = ref<'film' | 'song' | 'podcast'>('film')
const activeTab = ref<ContentTab>('film')
const availableTabs = ref<ContentTab[]>([])
const selectedDesignSystemItem = ref<DesignSystemItem | null>(null)
const longFormArticle = ref<{ content: string; title?: string } | null>(null)

export interface DesignSystemItem {
  id: string
  name: string
  category: 'colors' | 'typography' | 'spacing' | 'atoms' | 'molecules' | 'organisms'
  description: string
  code: string
  preview?: 'inline'
  usedIn?: string
}

export function useContentPanel() {
  function updatePanelFromText(text: string, userQuery = '', webResults: WebSearchResult[] = []) {
    panelQuery.value = userQuery.trim()
    const songs = extractAllSongs(text, userQuery)
    let films = extractAllFilms(text)
    const podcasts = extractAllPodcasts(text)
    const books = extractAllBooks(text, userQuery)
    const tvSeries = extractAllTVSeries(text, userQuery)
    if (tvSeries.length > 0 && isTVQuery(userQuery)) {
      films = films.filter(f => !f.id.startsWith('ext-'))
    }
    const fromMarkdown = extractMarkdownLinks(text)
    const boldDomains = extractBoldDomainLinks(text)

    panelRssArticles.value = []

    const hasLinkableContent = fromMarkdown.length > 0 || boldDomains.length > 0
    const websitesFromMarkdown = hasLinkableContent ? fromMarkdown : []
    const mergedWebsites = mergeNewsResults(websitesFromMarkdown, boldDomains)
    const hasWebsites = mergedWebsites.length > 0

    const images = extractAllImages(text, userQuery)
    const places = extractAllPlaces(text, userQuery)

    // Magazine = bullet-style sections (- **Title**: Content)
    const magazineSections = extractMagazineSections(text)
    const hasAnyOtherContent = films.length > 0 || songs.length > 0 || podcasts.length > 0 ||
      books.length > 0 || tvSeries.length > 0 || images.length > 0 || places.length > 0
    const hasMagazine = magazineSections.length >= 1 && (
      isNewsQuery(userQuery) || isNewsLikeResponse(text) ||
      /sentiment|bearish|bull case|macro|%|BTC|bitcoin|BIP|protocol|debate|what'?s happening|ETF|inflow|trading at|key developments|price recovery|institutional|analyst watch|market cap/i.test(text) ||
      (!hasAnyOtherContent && !hasWebsites && magazineSections.length >= 2)
    )

    // News = actual articles (web search + RSS from website domains)
    const newsContext = isNewsQuery(userQuery) || isNewsLikeResponse(text)
    const hasNews = (webResults.length > 0 || mergedWebsites.length > 0) && newsContext
    const mergedNews = hasNews ? mergeNewsResults(webResults, panelRssArticles.value) : []

    if (mergedWebsites.length > 0 && newsContext) {
      const urls = mergedWebsites.map((w) => w.url)
      fetchRssFromUrls(urls).then((articles) => {
        if (articles.length === 0) return
        panelRssArticles.value = articles
        const combined = mergeNewsResults(panelWebResults.value, articles)
        panelWebResults.value = combined
        if (!availableTabs.value.includes('news')) {
          availableTabs.value = ['news', ...availableTabs.value]
          activeTab.value = 'news'
        }
        const ctx = extractQueryContext(panelQuery.value)
        panelTitle.value = ctx ? `${ctx} — ${combined.length} articles` : `${combined.length} Articles`
      })
    }

    const tabs = filterTabsByContext(userQuery, films.length > 0, songs.length > 0, podcasts.length > 0, books.length > 0, tvSeries.length > 0, images.length > 0, places.length > 0, hasNews, hasWebsites, hasMagazine)
    availableTabs.value = tabs.length > 0 ? tabs : ['film']
    activeTab.value = tabs[0] ?? 'film'

    const showFilms = tabs.includes('film')
    const showBooks = tabs.includes('book')
    const showTVSeries = tabs.includes('tvshow')
    const showImages = tabs.includes('image')
    const showPlaces = tabs.includes('place')
    const showSongs = tabs.includes('song')
    const showPodcasts = tabs.includes('podcast')
    const showNews = tabs.includes('news')
    const showWebsitesTab = tabs.includes('websites')
    const showMagazine = tabs.includes('magazine')

    const visibleFilms = showFilms ? films : []
    const visibleBooks = showBooks ? books : []
    const visibleTVSeries = showTVSeries ? tvSeries : []
    const visibleImages = showImages ? images : []
    const visiblePlaces = showPlaces ? places : []
    const visibleSongs = showSongs ? songs : []
    const visiblePodcasts = showPodcasts ? podcasts : []
    const visibleNews = showNews ? mergedNews : []
    const visibleWebsites = showWebsitesTab ? mergedWebsites : []
    const visibleMagazineSections = showMagazine ? magazineSections : []

    panelFilms.value = visibleFilms
    panelBooks.value = visibleBooks
    panelTVSeries.value = visibleTVSeries
    panelImages.value = visibleImages
    panelPlaces.value = visiblePlaces
    panelSongs.value = visibleSongs
    panelPodcasts.value = visiblePodcasts
    panelWebResults.value = visibleNews
    panelWebsites.value = visibleWebsites
    panelMagazineSections.value = visibleMagazineSections
    panelMagazineHeroImage.value = showMagazine
      ? (extractMagazineHeroImage(text) ?? webResults[0]?.imgSrc ?? null)
      : null
    selectedFilm.value = null
    selectedBook.value = null
    selectedTVSeries.value = null
    selectedImage.value = null
    selectedPlace.value = null
    selectedSong.value = null
    selectedPodcast.value = null
    selectedArticle.value = null
    selectedWebsite.value = null
    selectedMagazineSection.value = null

    if (visibleFilms.length > 0) contentType.value = 'film'
    else if (visibleBooks.length > 0) contentType.value = 'film'
    else if (visibleTVSeries.length > 0) contentType.value = 'film'
    else if (visibleSongs.length > 0) contentType.value = 'song'
    else if (visiblePodcasts.length > 0) contentType.value = 'podcast'
    else if (visibleNews.length > 0) contentType.value = 'film'
    else contentType.value = 'film'

    // Title follows the primary (first) tab
    const primary = tabs[0]
    if (primary === 'place' && visiblePlaces.length > 0) {
      panelTitle.value = visiblePlaces.length === 1 ? visiblePlaces[0].name : `${visiblePlaces.length} Places`
    } else if (primary === 'tvshow' && visibleTVSeries.length > 0) {
      panelTitle.value = visibleTVSeries.length === 1 ? visibleTVSeries[0].title : `${visibleTVSeries.length} TV Series`
    } else if (primary === 'book' && visibleBooks.length > 0) {
      panelTitle.value = visibleBooks.length === 1 ? visibleBooks[0].title : `${visibleBooks.length} Books`
    } else if (primary === 'image' && visibleImages.length > 0) {
      panelTitle.value = `${visibleImages.length} Images`
    } else if (visibleFilms.length === 1) panelTitle.value = visibleFilms[0].title
    else if (visibleFilms.length > 1) panelTitle.value = `${visibleFilms.length} Films`
    else if (visibleBooks.length === 1) panelTitle.value = visibleBooks[0].title
    else if (visibleBooks.length > 1) panelTitle.value = `${visibleBooks.length} Books`
    else if (visibleTVSeries.length === 1) panelTitle.value = visibleTVSeries[0].title
    else if (visibleTVSeries.length > 1) panelTitle.value = `${visibleTVSeries.length} TV Series`
    else if (visibleSongs.length === 1) panelTitle.value = visibleSongs[0].title
    else if (visibleSongs.length > 1) panelTitle.value = `${visibleSongs.length} Songs`
    else if (visiblePlaces.length === 1) panelTitle.value = visiblePlaces[0].name
    else if (visiblePlaces.length > 1) panelTitle.value = `${visiblePlaces.length} Places`
    else if (visiblePodcasts.length === 1) panelTitle.value = visiblePodcasts[0].title
    else if (visiblePodcasts.length > 1) panelTitle.value = `${visiblePodcasts.length} Podcasts`
    else if (visibleNews.length > 0) {
      const ctx = extractQueryContext(userQuery)
      panelTitle.value = ctx ? `${ctx} — ${visibleNews.length} articles` : `${visibleNews.length} Articles`
    }
    else if (visibleMagazineSections.length > 0) {
      const ctx = extractQueryContext(userQuery)
      panelTitle.value = ctx ? `${ctx} — Brief` : 'AI Brief'
    }
    else if (visibleWebsites.length > 0) panelTitle.value = `${visibleWebsites.length} Websites`
    else panelTitle.value = 'Content'

    panelOpen.value = tabs.length > 0
  }

  function setActiveTab(tab: ContentTab) {
    if (availableTabs.value.includes(tab)) activeTab.value = tab
  }

  /** Contextual content for inline cards (prompt index badges) */
  function getContextualInlineContent(text: string, userQuery: string, webResults: WebSearchResult[] = []) {
    let films = extractAllFilms(text)
    const songs = extractAllSongs(text, userQuery)
    const podcasts = extractAllPodcasts(text)
    const books = extractAllBooks(text, userQuery)
    const tvSeries = extractAllTVSeries(text, userQuery)
    if (tvSeries.length > 0 && isTVQuery(userQuery)) {
      films = films.filter(f => !f.id.startsWith('ext-'))
    }
    const magazineSections = extractMagazineSections(text)
    const fromMarkdown = extractMarkdownLinks(text)
    const boldDomains = extractBoldDomainLinks(text)
    const hasNews = webResults.length > 0 && (isNewsQuery(userQuery) || isNewsLikeResponse(text))
    const newsLinks = hasNews ? webResults : []
    const hasLinkableContent = fromMarkdown.length > 0 || boldDomains.length > 0
    const websitesFromMd = hasLinkableContent ? fromMarkdown : []
    const websitesLinks = mergeNewsResults(websitesFromMd, boldDomains)
    const hasWebsites = websitesLinks.length > 0
    const images = extractAllImages(text, userQuery)
    const places = extractAllPlaces(text, userQuery)
    const hasAnyOtherInline = films.length > 0 || songs.length > 0 || podcasts.length > 0 ||
      books.length > 0 || tvSeries.length > 0 || images.length > 0 || places.length > 0
    const hasMagazine = magazineSections.length >= 1 && (
      isNewsQuery(userQuery) || isNewsLikeResponse(text) ||
      /sentiment|bearish|bull case|macro|%|BTC|bitcoin|BIP|protocol|debate|what'?s happening|ETF|inflow|trading at|key developments|price recovery|institutional|analyst watch|market cap/i.test(text) ||
      (!hasAnyOtherInline && !hasWebsites && magazineSections.length >= 2)
    )
    const tabs = filterTabsByContext(userQuery, films.length > 0, songs.length > 0, podcasts.length > 0, books.length > 0, tvSeries.length > 0, images.length > 0, places.length > 0, hasNews, hasWebsites, hasMagazine)
    return {
      films: tabs.includes('film') ? films : [],
      books: tabs.includes('book') ? books : [],
      tvSeries: tabs.includes('tvshow') ? tvSeries : [],
      images: tabs.includes('image') ? images : [],
      places: tabs.includes('place') ? places : [],
      songs: tabs.includes('song') ? songs : [],
      podcasts: tabs.includes('podcast') ? podcasts : [],
      newsLinks: tabs.includes('news') ? newsLinks : [],
      websitesLinks: tabs.includes('websites') ? websitesLinks : [],
      magazineSections: tabs.includes('magazine') ? magazineSections : [],
    }
  }

  // ─── Detail open/close ────────────────────────────────────────

  function clearAllSelections() {
    selectedFilm.value = null
    selectedBook.value = null
    selectedTVSeries.value = null
    selectedImage.value = null
    selectedPlace.value = null
    selectedSong.value = null
    selectedPodcast.value = null
    selectedArticle.value = null
    selectedWebsite.value = null
    selectedMagazineSection.value = null
    selectedDesignSystemItem.value = null
    longFormArticle.value = null
  }

  function openFilmDetail(film: Film) { clearAllSelections(); selectedFilm.value = film }
  function closeFilmDetail() { selectedFilm.value = null }

  function openBookDetail(book: Book) { clearAllSelections(); selectedBook.value = book }
  function closeBookDetail() { selectedBook.value = null }

  function openSongDetail(song: Song) { clearAllSelections(); selectedSong.value = song }
  function closeSongDetail() { selectedSong.value = null }

  function openPodcastDetail(podcast: Podcast) { clearAllSelections(); selectedPodcast.value = podcast }
  function closePodcastDetail() { selectedPodcast.value = null }

  function openArticleDetail(article: WebSearchResult) { clearAllSelections(); selectedArticle.value = article; panelOpen.value = true }
  function closeArticleDetail() { selectedArticle.value = null }

  function openWebsiteDetail(website: WebSearchResult) { clearAllSelections(); selectedWebsite.value = website; panelOpen.value = true }
  function closeWebsiteDetail() { selectedWebsite.value = null }

  function openLongFormArticle(content: string, title?: string) { clearAllSelections(); longFormArticle.value = { content, title }; panelOpen.value = true }
  function closeLongFormArticle() { longFormArticle.value = null }

  function openMagazineSectionDetail(section: MagazineSection, index: number) {
    clearAllSelections()
    selectedMagazineSection.value = section
    magazineSectionIndex.value = index
  }
  function closeMagazineSectionDetail() { selectedMagazineSection.value = null }

  function navigateMagazineSection(direction: 'prev' | 'next') {
    const sections = panelMagazineSections.value
    if (!sections.length) return
    let idx = magazineSectionIndex.value
    idx += direction === 'next' ? 1 : -1
    if (idx < 0) idx = sections.length - 1
    if (idx >= sections.length) idx = 0
    magazineSectionIndex.value = idx
    selectedMagazineSection.value = sections[idx]
  }

  function openTVSeriesDetail(series: TVSeries) { clearAllSelections(); selectedTVSeries.value = series }
  function closeTVSeriesDetail() { selectedTVSeries.value = null }

  function openImageDetail(image: ImageItem) { clearAllSelections(); selectedImage.value = image }
  function closeImageDetail() { selectedImage.value = null }

  function openPlaceDetail(place: Place) { clearAllSelections(); selectedPlace.value = place }
  function closePlaceDetail() { selectedPlace.value = null }

  function openDesignSystemItem(item: DesignSystemItem) { clearAllSelections(); selectedDesignSystemItem.value = item }
  function closeDesignSystemItem() { selectedDesignSystemItem.value = null }

  function enterDesignSystemMode() {
    panelOpen.value = true
    activeTab.value = 'design-system'
    availableTabs.value = ['design-system']
    panelTitle.value = 'Design System'
    clearAllSelections()
  }

  function closePanel() {
    panelOpen.value = false
    clearAllSelections()
    activeTab.value = 'film'
    availableTabs.value = []
  }

  function showAllFilms() {
    panelFilms.value = [...mockFilms]
    panelSongs.value = []
    panelPodcasts.value = []
    panelTitle.value = 'Your Film Library'
    contentType.value = 'film'
    panelOpen.value = true
    clearAllSelections()
  }

  function showAllSongs() {
    panelFilms.value = []
    panelSongs.value = [...mockSongs]
    panelPodcasts.value = []
    panelTitle.value = 'Your Song Library'
    contentType.value = 'song'
    panelOpen.value = true
    clearAllSelections()
  }

  function showAllPodcasts() {
    panelFilms.value = []
    panelSongs.value = []
    panelPodcasts.value = [...mockPodcasts]
    panelTitle.value = 'Your Podcast Library'
    contentType.value = 'podcast'
    panelOpen.value = true
    clearAllSelections()
  }

  return {
    panelOpen,
    panelFilms,
    panelBooks,
    panelTVSeries,
    panelImages,
    panelPlaces,
    panelSongs,
    panelPodcasts,
    panelWebResults,
    panelWebsites,
    panelMagazineSections,
    panelMagazineHeroImage,
    selectedFilm,
    selectedBook,
    selectedTVSeries,
    selectedImage,
    selectedPlace,
    selectedSong,
    selectedPodcast,
    selectedArticle,
    selectedWebsite,
    selectedMagazineSection,
    magazineSectionIndex,
    panelTitle,
    panelQuery,
    contentType,
    activeTab,
    availableTabs,
    setActiveTab,
    extractFilmIds,
    extractAllFilms,
    extractAllBooks,
    extractAllTVSeries,
    extractSongIds,
    extractAllSongs,
    extractPodcastIds,
    extractAllPodcasts,
    getContextualInlineContent,
    updatePanelFromText,
    stripFilmTags,
    stripSongTags,
    stripPodcastTags,
    stripContentTags,
    stripMarkdownLinks,
    openFilmDetail,
    closeFilmDetail,
    openBookDetail,
    closeBookDetail,
    openSongDetail,
    closeSongDetail,
    openPodcastDetail,
    closePodcastDetail,
    openArticleDetail,
    closeArticleDetail,
    openWebsiteDetail,
    closeWebsiteDetail,
    openMagazineSectionDetail,
    closeMagazineSectionDetail,
    navigateMagazineSection,
    openTVSeriesDetail,
    closeTVSeriesDetail,
    openImageDetail,
    closeImageDetail,
    openPlaceDetail,
    closePlaceDetail,
    selectedDesignSystemItem,
    openDesignSystemItem,
    closeDesignSystemItem,
    longFormArticle,
    openLongFormArticle,
    closeLongFormArticle,
    enterDesignSystemMode,
    closePanel,
    showAllFilms,
    showAllSongs,
    showAllPodcasts,
  }
}