/**
 * ProxmoxPanel — Alpine.js stores + composants + Swup init + HTMX config
 *
 * Chargé AVANT alpine.min.js (qui est defer).
 * L'événement 'alpine:init' est déclenché par Alpine avant qu'il parcourt le DOM.
 */

// ── Utilitaires ────────────────────────────────────────────────────────────

function apiFetch(path, opts = {}) {
  const token = localStorage.getItem('pxp_token')
  return fetch(path, {
    ...opts,
    headers: {
      'Content-Type': 'application/json',
      ...(token ? { Authorization: 'Bearer ' + token } : {}),
      ...(opts.headers || {}),
    },
  })
}

// ── Alpine:init ────────────────────────────────────────────────────────────

document.addEventListener('alpine:init', () => {

  // ── Store auth ─────────────────────────────────────────────────────────
  Alpine.store('auth', {
    token: null,
    user: null,
    get isAuthenticated() { return !!this.token && !!this.user },

    async init() {
      this.token = localStorage.getItem('pxp_token')
      if (this.token) {
        try {
          await this.fetchMe()
        } catch {
          await this.tryRefresh()
        }
      }
    },

    async fetchMe() {
      const res = await apiFetch('/api/auth/me')
      if (res.ok) {
        this.user = await res.json()
      } else if (res.status === 401) {
        await this.tryRefresh()
      }
    },

    async tryRefresh() {
      const res = await fetch('/api/auth/refresh', { method: 'POST', credentials: 'include' })
      if (res.ok) {
        const data = await res.json()
        // Le backend retourne "access_token" (pas "token")
        this.token = data.access_token
        localStorage.setItem('pxp_token', data.access_token)
        await this.fetchMe()
      } else {
        this.clear()
      }
    },

    async login(username, password) {
      const res = await fetch('/api/auth/login', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        credentials: 'include',
        body: JSON.stringify({ username, password }),
      })
      if (!res.ok) {
        const err = await res.json().catch(() => ({}))
        throw new Error(err.error || 'Identifiants invalides')
      }
      const data = await res.json()
      // Le backend retourne "access_token" (pas "token")
      this.token = data.access_token
      this.user = data.user
      localStorage.setItem('pxp_token', data.access_token)
    },

    async logout() {
      await apiFetch('/api/auth/logout', { method: 'POST', credentials: 'include' }).catch(() => {})
      this.clear()
      window.location.href = '/login.html'
    },

    clear() {
      this.token = null
      this.user = null
      localStorage.removeItem('pxp_token')
    },
  })

  // ── Store UI ────────────────────────────────────────────────────────────
  Alpine.store('ui', {
    theme: localStorage.getItem('pxp_theme') || 'dark',
    sidebarCollapsed: localStorage.getItem('pxp_sidebar') === 'true',
    currentPage: '',

    init() {
      this.applyTheme()
      // Detect current page from URL
      const path = window.location.pathname
      this.currentPage = path.replace(/^\/|\.html$/g, '') || 'index'
    },

    applyTheme() {
      document.documentElement.setAttribute('data-theme', this.theme)
    },

    toggleTheme() {
      this.theme = this.theme === 'dark' ? 'light' : 'dark'
      localStorage.setItem('pxp_theme', this.theme)
      this.applyTheme()
    },

    toggleSidebar() {
      this.sidebarCollapsed = !this.sidebarCollapsed
      localStorage.setItem('pxp_sidebar', this.sidebarCollapsed)
    },
  })

  // ── Store i18n ──────────────────────────────────────────────────────────
  Alpine.store('i18n', {
    lang: localStorage.getItem('pxp_lang') || 'fr',
    msgs: {},
    loaded: false,

    async init() {
      await this.load(this.lang)
    },

    async load(lang) {
      try {
        const res = await fetch(`/locales/${lang}.json`)
        if (res.ok) {
          this.msgs = await res.json()
          this.lang = lang
          localStorage.setItem('pxp_lang', lang)
          this.loaded = true
        }
      } catch (e) {
        console.error('i18n load error', e)
      }
    },

    t(key, vars = {}) {
      const parts = key.split('.')
      let val = this.msgs
      for (const p of parts) {
        val = val?.[p]
        if (val === undefined) return key
      }
      if (typeof val !== 'string') return key
      return val.replace(/\{(\w+)\}/g, (_, k) => vars[k] ?? `{${k}}`)
    },

    async setLang(lang) {
      await this.load(lang)
    },
  })

  // ── Composant: sidebar ──────────────────────────────────────────────────
  Alpine.data('sidebar', () => ({
    get collapsed() { return Alpine.store('ui').sidebarCollapsed },
    get currentPage() { return Alpine.store('ui').currentPage },

    navItems: [
      { id: 'dashboard',  icon: '⊞', labelKey: 'nav.dashboard',  href: '/dashboard.html' },
      { id: 'proxmox',    icon: '⬡', labelKey: 'nav.proxmox',    href: '/proxmox.html'   },
      { id: 'updates',    icon: '↑', labelKey: 'nav.updates',    href: '/updates.html'   },
      { id: 'terminal',   icon: '❯', labelKey: 'nav.terminal',   href: '/terminal.html'  },
      { id: 'settings',   icon: '⚙', labelKey: 'nav.settings',   href: '/settings.html'  },
      { id: 'modules',    icon: '⬡', labelKey: 'nav.modules',    href: '/modules.html'   },
    ],

    isActive(id) {
      return this.currentPage === id
    },

    navigate(href) {
      if (window.swup) {
        window.swup.navigate(href)
      } else {
        window.location.href = href
      }
    },

    t(key) { return Alpine.store('i18n').t(key) },
    toggle() { Alpine.store('ui').toggleSidebar() },
  }))

  // ── Composant: navbar ───────────────────────────────────────────────────
  Alpine.data('navbar', () => ({
    get theme() { return Alpine.store('ui').theme },
    get user() { return Alpine.store('auth').user },
    get lang() { return Alpine.store('i18n').lang },

    toggleTheme() { Alpine.store('ui').toggleTheme() },
    logout() { Alpine.store('auth').logout() },
    async setLang(lang) { await Alpine.store('i18n').setLang(lang) },
    t(key) { return Alpine.store('i18n').t(key) },
  }))

  // ── Composant: loginPage ────────────────────────────────────────────────
  Alpine.data('loginPage', () => ({
    username: '',
    password: '',
    error: '',
    loading: false,

    async submit() {
      this.error = ''
      this.loading = true
      try {
        await Alpine.store('auth').login(this.username, this.password)
        window.location.href = '/dashboard.html'
      } catch (e) {
        this.error = e.message
      } finally {
        this.loading = false
      }
    },

    t(key) { return Alpine.store('i18n').t(key) },
  }))

  // ── Composant: installPage ──────────────────────────────────────────────
  Alpine.data('installPage', () => ({
    step: 1,
    totalSteps: 4,
    error: '',
    loading: false,
    sshTesting: false,
    sshStatus: '',

    form: {
      instance_name: 'ProxmoxPanel',
      public_url: window.location.origin,
      default_lang: 'fr',
      ssh_host: '',
      ssh_username: '',
      ssh_password: '',
      proxmox_url: '',
      proxmox_token_id: '',
      proxmox_token_secret: '',
    },

    async testSSH() {
      this.sshTesting = true
      this.sshStatus = ''
      try {
        const res = await fetch('/api/install/test-ssh', {
          method: 'POST',
          headers: { 'Content-Type': 'application/json' },
          body: JSON.stringify({
            host: this.form.ssh_host,
            username: this.form.ssh_username,
            password: this.form.ssh_password,
          }),
        })
        this.sshStatus = res.ok ? 'ok' : 'error'
      } catch {
        this.sshStatus = 'error'
      } finally {
        this.sshTesting = false
      }
    },

    nextStep() {
      if (this.step < this.totalSteps) this.step++
    },
    prevStep() {
      if (this.step > 1) this.step--
    },

    async finish() {
      this.loading = true
      this.error = ''
      try {
        const res = await fetch('/api/install/configure', {
          method: 'POST',
          headers: { 'Content-Type': 'application/json' },
          body: JSON.stringify(this.form),
        })
        if (!res.ok) {
          const d = await res.json().catch(() => ({}))
          throw new Error(d.error || 'Erreur installation')
        }
        window.location.href = '/login.html'
      } catch (e) {
        this.error = e.message
      } finally {
        this.loading = false
      }
    },

    t(key, vars) { return Alpine.store('i18n').t(key, vars) },
  }))

  // ── Composant: dashboardPage ────────────────────────────────────────────
  Alpine.data('dashboardPage', () => ({
    resources: [],
    ws: null,
    wsStatus: 'connecting',

    async init() {
      // Chargement immédiat via HTTP, puis WS pour le temps réel
      await this.fetchResources()
      this.connectWS()
    },

    destroy() {
      if (this.ws) this.ws.close()
    },

    async fetchResources() {
      try {
        const res = await apiFetch('/api/proxmox/resources')
        if (res.ok) {
          this.resources = await res.json() || []
          this.wsStatus = 'ok'
        }
      } catch (e) { /* WS prendra le relais */ }
    },

    connectWS() {
      const proto = location.protocol === 'https:' ? 'wss' : 'ws'
      const token = encodeURIComponent(localStorage.getItem('pxp_token') || '')
      this.ws = new WebSocket(`${proto}://${location.host}/ws/proxmox?token=${token}`)
      this.ws.onmessage = (e) => {
        const msg = JSON.parse(e.data)
        // Le backend publie type="resources_update", payload=[...]
        if (msg.type === 'resources_update') {
          this.resources = msg.payload || []
          this.wsStatus = 'ok'
        }
      }
      this.ws.onclose = () => {
        this.wsStatus = 'disconnected'
        setTimeout(() => this.connectWS(), 5000)
      }
      this.ws.onerror = () => { this.wsStatus = 'error' }
    },

    get runningCount() { return this.resources.filter(r => r.status === 'running').length },
    get stoppedCount() { return this.resources.filter(r => r.status !== 'running').length },
    get lxcList() { return this.resources.filter(r => r.type === 'lxc') },
    get vmList() { return this.resources.filter(r => r.type === 'qemu') },

    t(key) { return Alpine.store('i18n').t(key) },
  }))

  // ── Composant: proxmoxPage ──────────────────────────────────────────────
  Alpine.data('proxmoxPage', () => ({
    resources: [],
    ws: null,
    wsStatus: 'connecting',
    actionLoading: {},

    async init() {
      await this.fetchResources()
      this.connectWS()
    },
    destroy() { if (this.ws) this.ws.close() },

    async fetchResources() {
      try {
        const res = await apiFetch('/api/proxmox/resources')
        if (res.ok) {
          this.resources = await res.json() || []
          this.wsStatus = 'ok'
        }
      } catch (e) { /* WS prendra le relais */ }
    },

    connectWS() {
      const proto = location.protocol === 'https:' ? 'wss' : 'ws'
      const token = encodeURIComponent(localStorage.getItem('pxp_token') || '')
      this.ws = new WebSocket(`${proto}://${location.host}/ws/proxmox?token=${token}`)
      this.ws.onmessage = (e) => {
        const msg = JSON.parse(e.data)
        // Le backend publie type="resources_update", payload=[...]
        if (msg.type === 'resources_update') {
          this.resources = msg.payload || []
          this.wsStatus = 'ok'
        }
      }
      this.ws.onclose = () => {
        this.wsStatus = 'disconnected'
        setTimeout(() => this.connectWS(), 5000)
      }
      this.ws.onerror = () => { this.wsStatus = 'error' }
    },

    async action(vmid, type, action) {
      const key = `${vmid}-${action}`
      this.actionLoading[key] = true
      try {
        await apiFetch(`/api/proxmox/${type}/${vmid}/${action}`, { method: 'POST' })
      } catch(e) {
        console.error(e)
      } finally {
        this.actionLoading[key] = false
      }
    },

    cpuColor(pct) {
      if (pct > 80) return 'var(--neu-danger)'
      if (pct > 50) return 'var(--neu-warning)'
      return 'var(--neu-success)'
    },

    formatMem(bytes) {
      if (!bytes) return '0 MB'
      return Math.round(bytes / 1024 / 1024) + ' MB'
    },

    t(key) { return Alpine.store('i18n').t(key) },
  }))

  // ── Composant: updatesPage ──────────────────────────────────────────────
  Alpine.data('updatesPage', () => ({
    targets: [],
    loading: true,
    ws: null,
    currentJob: null,
    output: '',
    jobStatus: '',

    async init() {
      await this.loadTargets()
      await this.checkAll()
    },

    destroy() { if (this.ws) this.ws.close() },

    async loadTargets() {
      this.loading = true
      try {
        const res = await apiFetch('/api/proxmox/resources')
        if (res.ok) {
          const resources = await res.json() || []
          this.targets = [
            { id: 'host', name: 'Proxmox Host', status: 'running', packages: null, checking: false, updating: false },
            ...resources
              .filter(r => r.type === 'lxc')
              .map(r => ({
                id: `lxc:${r.vmid}`,
                name: r.name || `LXC ${r.vmid}`,
                status: r.status,
                vmid: r.vmid,
                packages: null,
                checking: false,
                updating: false,
              })),
          ]
        }
      } catch(e) {
        console.error('loadTargets', e)
      } finally {
        this.loading = false
      }
    },

    async checkTarget(target) {
      target.checking = true
      target.packages = null
      try {
        const res = await apiFetch(`/api/updates/packages?target=${encodeURIComponent(target.id)}`)
        if (res.ok) {
          target.packages = await res.json()
        }
      } catch(e) {
        console.error('checkTarget', e)
      } finally {
        target.checking = false
      }
    },

    async checkAll() {
      for (const t of this.targets) {
        await this.checkTarget(t)
      }
    },

    async updateTarget(target) {
      target.updating = true
      this.output = ''
      this.jobStatus = 'running'
      try {
        const res = await apiFetch('/api/updates/run', {
          method: 'POST',
          body: JSON.stringify({ target: target.id }),
        })
        if (!res.ok) throw new Error('Erreur démarrage mise à jour')
        const data = await res.json()
        this.currentJob = data.job_id
        await this.watchJob(data.job_id)
        target.packages = []
      } catch(e) {
        this.output += '\n[ERREUR] ' + e.message
        this.jobStatus = 'error'
      } finally {
        target.updating = false
      }
    },

    async updateAll() {
      this.output = ''
      this.jobStatus = 'running'
      try {
        const res = await apiFetch('/api/updates/run', {
          method: 'POST',
          body: JSON.stringify({ target: 'all' }),
        })
        if (!res.ok) throw new Error('Erreur démarrage')
        const data = await res.json()
        this.currentJob = data.job_id
        await this.watchJob(data.job_id)
        for (const t of this.targets) t.packages = []
      } catch(e) {
        this.output += '\n[ERREUR] ' + e.message
        this.jobStatus = 'error'
      }
    },

    watchJob(jobId) {
      return new Promise((resolve) => {
        if (this.ws) this.ws.close()
        const proto = location.protocol === 'https:' ? 'wss' : 'ws'
        const token = localStorage.getItem('pxp_token')
        this.ws = new WebSocket(`${proto}://${location.host}/ws/updates/${jobId}?token=${token}`)
        this.ws.onmessage = (e) => {
          const msg = JSON.parse(e.data)
          // Le backend publie dans msg.payload (pas msg.data)
          if (msg.type === 'update_output') {
            this.output += msg.payload?.chunk || ''
          } else if (msg.type === 'update_done') {
            this.jobStatus = 'success'
            resolve()
          } else if (msg.type === 'update_error') {
            this.jobStatus = 'error'
            this.output += '\n[ERREUR] ' + (msg.payload?.error || '')
            resolve()
          }
        }
        this.ws.onerror = () => { this.jobStatus = 'error'; resolve() }
        this.ws.onclose = () => { if (this.jobStatus === 'running') { this.jobStatus = 'error'; resolve() } }
      })
    },

    get totalPackages() {
      return this.targets.reduce((sum, t) => sum + (t.packages?.length || 0), 0)
    },

    t(key) { return Alpine.store('i18n').t(key) },
  }))

  // ── Composant: settingsPage ─────────────────────────────────────────────
  Alpine.data('settingsPage', () => ({
    tab: 'general',
    loading: true,
    saving: false,
    saved: false,
    error: '',
    settings: {
      instance_name: '',
      public_url: '',
      default_lang: 'fr',
      ssh_host: '',
      ssh_username: '',
      ssh_password: '',    // chiffré, laisser vide = pas de changement
      proxmox_url: '',
      proxmox_token: '',   // chiffré, format: user@realm!tokenid=secret
    },

    async init() {
      await this.load()
    },

    async load() {
      this.loading = true
      try {
        const res = await apiFetch('/api/settings')
        if (res.ok) {
          const data = await res.json()
          Object.assign(this.settings, data)
        }
      } finally {
        this.loading = false
      }
    },

    async save() {
      this.saving = true
      this.saved = false
      this.error = ''
      try {
        // Backend: PUT /api/settings/{key} avec { value: "..." } — un appel par clé
        const keys = Object.keys(this.settings)
        for (const key of keys) {
          const val = this.settings[key]
          // Ignorer les champs vides pour les secrets (ne pas écraser l'existant)
          if (val === '' && (key === 'ssh_password' || key === 'proxmox_token')) continue
          const res = await apiFetch(`/api/settings/${key}`, {
            method: 'PUT',
            body: JSON.stringify({ value: val }),
          })
          if (!res.ok) {
            const d = await res.json().catch(() => ({}))
            throw new Error(d.error || `Erreur sauvegarde de ${key}`)
          }
        }
        this.saved = true
        setTimeout(() => { this.saved = false }, 3000)
      } catch(e) {
        this.error = e.message
      } finally {
        this.saving = false
      }
    },

    t(key) { return Alpine.store('i18n').t(key) },
  }))

  // ── Composant: modulesPage ──────────────────────────────────────────────
  Alpine.data('modulesPage', () => ({
    modules: [],
    loading: true,
    toggling: {},

    async init() {
      await this.load()
    },

    async load() {
      this.loading = true
      try {
        const res = await apiFetch('/api/modules')
        if (res.ok) {
          this.modules = await res.json() || []
        }
      } finally {
        this.loading = false
      }
    },

    async toggle(mod) {
      this.toggling[mod.id] = true
      try {
        // Backend: is_enabled (pas enabled)
        const action = mod.is_enabled ? 'disable' : 'enable'
        const res = await apiFetch(`/api/modules/${mod.id}/${action}`, { method: 'POST' })
        if (res.ok) {
          mod.is_enabled = !mod.is_enabled
        }
      } catch(e) {
        console.error(e)
      } finally {
        this.toggling[mod.id] = false
      }
    },

    t(key) { return Alpine.store('i18n').t(key) },
  }))

}) // end alpine:init

// ── DOMContentLoaded : init stores + Swup ─────────────────────────────────

document.addEventListener('DOMContentLoaded', async () => {
  // Init stores
  await Alpine.store('i18n').init()
  await Alpine.store('auth').init()
  Alpine.store('ui').init()

  const publicPages = ['login', 'install', 'index', '']
  const currentPage = window.location.pathname.replace(/^\/|\.html$/g, '') || 'index'

  // Guard rapide (synchrone) : si pas de token du tout, redirect immédiat
  if (!publicPages.includes(currentPage) && !localStorage.getItem('pxp_token')) {
    window.location.href = '/login.html'
    return
  }

  // Redirect depuis index
  if (currentPage === 'index' || currentPage === '') {
    const res = await fetch('/api/install/status').catch(() => null)
    if (res && res.ok) {
      const data = await res.json().catch(() => ({}))
      window.location.href = data.installed ? '/login.html' : '/install.html'
    } else {
      window.location.href = '/login.html'
    }
    return
  }

  // Init Swup pour transitions de page
  if (typeof Swup !== 'undefined') {
    const swup = new Swup({
      containers: ['#swup'],
      animationSelector: '[class*="transition-"]',
    })

    window.swup = swup

    // Guard auth sur navigation
    swup.hooks.on('visit:start', (visit) => {
      const dest = new URL(visit.to.url, location.href).pathname
        .replace(/^\/|\.html$/g, '') || 'index'
      if (!publicPages.includes(dest) && !Alpine.store('auth').isAuthenticated) {
        visit.abort()
        window.location.href = '/login.html'
      }
    })

    // Destroy Alpine scope de l'ancien contenu AVANT le swap
    swup.hooks.on('animation:out:end', () => {
      const container = document.getElementById('swup')
      if (container && typeof Alpine.destroyTree === 'function') {
        Alpine.destroyTree(container)
      }
    })

    // Init Alpine sur le nouveau contenu APRÈS le swap
    swup.hooks.on('content:replace', () => {
      const container = document.getElementById('swup')
      if (container) {
        Alpine.initTree(container)
      }
      // Update current page dans UI store
      Alpine.store('ui').currentPage =
        window.location.pathname.replace(/^\/|\.html$/g, '') || 'index'
    })
  }

  // HTMX : inject Authorization header sur toutes les requêtes
  document.addEventListener('htmx:configRequest', (e) => {
    const token = localStorage.getItem('pxp_token')
    if (token) {
      e.detail.headers['Authorization'] = 'Bearer ' + token
    }
  })
})