<template>
  <Sidebar variant="inset" v-bind="props">
    <SidebarHeader>
      <ProjectSwitcher v-if="userRole !== 'developer'" />
      
      <!-- Developer header (no project switching) -->
      <SidebarMenu v-else>
        <SidebarMenuItem>
          <SidebarMenuButton size="lg" as-child>
            <router-link to="/" class="flex items-center gap-2">
              <div class="flex aspect-square size-8 items-center justify-center rounded-lg bg-primary text-primary-foreground">
                <Clapperboard class="size-4" />
              </div>
              <div class="grid flex-1 text-left text-sm leading-tight group-data-[collapsible=icon]:hidden">
                <span class="truncate font-semibold">VFX Studio</span>
                <span class="truncate text-xs">Developer Tools</span>
              </div>
            </router-link>
          </SidebarMenuButton>
        </SidebarMenuItem>
      </SidebarMenu>
    </SidebarHeader>

    <SidebarContent>
      <!-- Main Navigation -->
      <SidebarGroup>
        <SidebarGroupLabel>Navigation</SidebarGroupLabel>
        <SidebarMenu>
          <SidebarMenuItem v-for="item in navigationItems" :key="item.title">
            <!-- Collapsed sidebar + Projects (with an active project): hovering reveals sub-links,
                 while the icon itself still navigates to /projects like any other nav item. -->
            <div
              v-if="item.title === 'Projects' && isCollapsed && projectTabs.length > 0"
              @mouseenter="showProjectFlyout = true"
              @mouseleave="showProjectFlyout = false"
            >
              <Popover :open="showProjectFlyout">
                <PopoverAnchor>
                  <SidebarMenuButton as-child :title="item.title">
                    <router-link :to="item.url" class="flex items-center gap-2">
                      <component :is="item.icon" class="size-4" />
                      <span class="group-data-[collapsible=icon]:hidden">{{ item.title }}</span>
                    </router-link>
                  </SidebarMenuButton>
                </PopoverAnchor>
                <PopoverContent
                  side="right"
                  align="start"
                  class="w-48 p-1"
                  @open-auto-focus.prevent
                  @mouseenter="showProjectFlyout = true"
                  @mouseleave="showProjectFlyout = false"
                >
                  <router-link
                    v-for="tab in projectTabs"
                    :key="tab.id"
                    :to="tab.route"
                    class="flex items-center gap-2 rounded-sm px-2 py-1.5 text-sm hover:bg-accent hover:text-accent-foreground"
                    :class="activeProjectTab === tab.id && 'bg-accent text-accent-foreground'"
                    @click="showProjectFlyout = false"
                  >
                    <component :is="tab.icon" class="size-4" />
                    <span>{{ tab.label }}</span>
                  </router-link>
                </PopoverContent>
              </Popover>
            </div>

            <template v-else>
              <SidebarMenuButton as-child :tooltip="isCollapsed ? item.title : undefined">
                <router-link :to="item.url" class="flex items-center gap-2">
                  <component :is="item.icon" class="size-4" />
                  <span class="group-data-[collapsible=icon]:hidden">{{ item.title }}</span>
                </router-link>
              </SidebarMenuButton>

              <!-- Project sub-navigation - shown under "Projects" when inside a specific project -->
              <SidebarMenuSub v-if="item.title === 'Projects' && projectTabs.length > 0">
                <SidebarMenuSubItem v-for="tab in projectTabs" :key="tab.id">
                  <SidebarMenuSubButton as-child :is-active="activeProjectTab === tab.id">
                    <router-link :to="tab.route" class="flex items-center gap-2">
                      <component :is="tab.icon" class="size-4" />
                      <span class="truncate">{{ tab.label }}</span>
                    </router-link>
                  </SidebarMenuSubButton>
                </SidebarMenuSubItem>
              </SidebarMenuSub>
            </template>
          </SidebarMenuItem>
        </SidebarMenu>
      </SidebarGroup>
        
      <!-- View Settings Section - Only show on shot/project pages -->
      <SidebarColumnSwitch v-if="userRole !== 'developer' && isOnShotPage" />
        
      <!-- Projects Section -->
      <!-- <SidebarGroup v-if="userRole !== 'developer'">
        <SidebarGroupLabel>Projects</SidebarGroupLabel>
        <SidebarMenu>
          <SidebarMenuItem v-for="project in recentProjects" :key="project.id">
            <SidebarMenuButton as-child :tooltip="isCollapsed ? project.name : undefined">
              <router-link :to="`/projects/${project.id}`" class="flex items-center gap-2">
                <Folder class="size-4" />
                <span class="truncate group-data-[collapsible=icon]:hidden">{{ project.name }}</span>
              </router-link>
            </SidebarMenuButton>
          </SidebarMenuItem>
        </SidebarMenu>
      </SidebarGroup> -->

      <!-- Admin Tools (only for admin users) -->
      <SidebarGroup v-if="authStore.isAdmin">
        <SidebarGroupLabel>Administration</SidebarGroupLabel>
        <SidebarMenu>
          <SidebarMenuItem v-for="item in adminItems" :key="item.title">
            <SidebarMenuButton as-child :tooltip="isCollapsed ? item.title : undefined">
              <router-link :to="item.url" class="flex items-center gap-2">
                <component :is="item.icon" class="size-4" />
                <span class="group-data-[collapsible=icon]:hidden">{{ item.title }}</span>
              </router-link>
            </SidebarMenuButton>
          </SidebarMenuItem>
        </SidebarMenu>
      </SidebarGroup>

      <!-- Developer Tools (only for developer role) -->
      <SidebarGroup v-if="userRole === 'developer'">
        <SidebarGroupLabel>Developer Tools</SidebarGroupLabel>
        <SidebarMenu>
          <SidebarMenuItem v-for="item in developerItems" :key="item.title">
            <SidebarMenuButton as-child :tooltip="isCollapsed ? item.title : undefined">
              <router-link :to="item.url" class="flex items-center gap-2">
                <component :is="item.icon" class="size-4" />
                <span class="group-data-[collapsible=icon]:hidden">{{ item.title }}</span>
              </router-link>
            </SidebarMenuButton>
          </SidebarMenuItem>
        </SidebarMenu>
      </SidebarGroup>
    </SidebarContent>

    <SidebarFooter>
      <UserMenu />
    </SidebarFooter>
  </Sidebar>
</template>

<script setup lang="ts">
import { computed, ref } from 'vue'
import { useRoute } from 'vue-router'
import { Popover, PopoverAnchor, PopoverContent } from '@/components/ui/popover'
import {
  Sidebar,
  SidebarContent,
  SidebarFooter,
  SidebarGroup,
  SidebarGroupLabel,
  SidebarHeader,
  SidebarMenu,
  SidebarMenuButton,
  SidebarMenuItem,
  SidebarMenuSub,
  SidebarMenuSubButton,
  SidebarMenuSubItem,
  useSidebar,
  SidebarProps
} from '@/components/ui/sidebar'
import {
  Clapperboard,
  Home,
  CheckSquare,
  FolderOpen,
  Users,
  Settings,
  Folder,
  Key,
  Database,
  BarChart3,
  RotateCcw,
  LayoutDashboard,
  Camera,
  Package,
  ListTodo,
  ShieldCheck,
} from 'lucide-vue-next'

import { useAuthStore } from '@/stores/auth'
import { usePermission } from '@/composables/usePermission'
import ProjectSwitcher from './ProjectSwitcher.vue'
import UserMenu from './UserMenu.vue'
import SidebarColumnSwitch from '@/components/ui/sidebar/SidebarColumnSwitch.vue'
const authStore = useAuthStore()
const { isCoordinatorOrAdmin } = usePermission()
const { state } = useSidebar()
const route = useRoute()
const showProjectFlyout = ref(false)
const user = computed(() => authStore.user)
const userRole = computed(() => authStore.user?.role || 'artist')

// Check if sidebar is collapsed
const isCollapsed = computed(() => state.value === 'collapsed')

// Check if on shot page - show column switch only on shot pages
const isOnShotPage = computed(() => {
  return route.path.endsWith('/shots') || route.path.includes('/project/')
})

// The project id when on a specific project's page (null on /projects, /projects/new, etc.)
const currentProjectId = computed(() => {
  const id = route.params.projectId
  const parsed = typeof id === 'string' ? parseInt(id) : NaN
  return isNaN(parsed) ? null : parsed
})

// Sub-nav items shown under the "Projects" nav item when inside a specific project
const projectTabs = computed(() => {
  const id = currentProjectId.value
  if (id === null) return []
  return [
    { id: 'overview', label: 'Overview', icon: LayoutDashboard, route: `/projects/${id}` },
    { id: 'shots', label: 'Shots', icon: Camera, route: `/projects/${id}/shots` },
    { id: 'assets', label: 'Assets', icon: Package, route: `/projects/${id}/assets` },
    { id: 'tasks', label: 'Tasks', icon: ListTodo, route: `/projects/${id}/tasks` },
    { id: 'settings', label: 'Settings', icon: Settings, route: `/projects/${id}/settings` },
  ]
})

const activeProjectTab = computed(() => {
  const id = currentProjectId.value
  if (id === null) return null
  const path = route.path
  if (path === `/projects/${id}`) return 'overview'
  if (path.startsWith(`/projects/${id}/shots`)) return 'shots'
  if (path.startsWith(`/projects/${id}/assets`)) return 'assets'
  if (path.startsWith(`/projects/${id}/tasks`)) return 'tasks'
  if (path.startsWith(`/projects/${id}/settings`)) return 'settings'
  return null
})

const props = withDefaults(defineProps<SidebarProps>(), {
  collapsible: "icon",
})
// Navigation items based on user role
const navigationItems = computed(() => {
  const baseItems = [
    { title: 'Dashboard', url: '/', icon: Home },
    { title: 'My Tasks', url: '/tasks', icon: CheckSquare },
  ]

  if (isCoordinatorOrAdmin.value) {
    baseItems.push(
      { title: 'Projects', url: '/projects', icon: FolderOpen },
      { title: 'Team', url: '/users', icon: Users }
    )
  }

  if (userRole.value === 'director' || authStore.isAdmin) {
    baseItems.push(
      { title: 'Reviews', url: '/reviews', icon: CheckSquare }
    )
  }

  if (authStore.isAdmin) {
    baseItems.push(
      { title: 'Settings', url: '/settings', icon: Settings }
    )
  }

  return baseItems
})

// Admin-specific navigation items
const adminItems = computed(() => [
  { title: 'Recovery Management', url: '/admin/deleted-items', icon: RotateCcw },
  { title: 'Role Management', url: '/admin/roles', icon: ShieldCheck },
])

// Developer-specific navigation items
const developerItems = computed(() => [
  { title: 'API Keys', url: '/developer/api-keys', icon: Key },
  { title: 'All Projects', url: '/developer/projects', icon: Database },
  { title: 'All Tasks', url: '/developer/tasks', icon: CheckSquare },
  { title: 'Usage Analytics', url: '/developer/analytics', icon: BarChart3 }
])

// Mock recent projects - this would come from a store in real implementation
const recentProjects = computed(() => [
  { id: 1, name: 'Project Alpha' },
  { id: 2, name: 'Project Beta' },
  { id: 3, name: 'Project Gamma' }
])
</script>