<script setup>
import { computed, onMounted, ref, watch } from 'vue'
import { useRouter, useRoute } from 'vue-router'
import { useAuthStore } from '@/stores/auth'
import { useProjectsStore } from '@/stores/projectsStore'
import { storeToRefs } from 'pinia'


const router = useRouter()
const route = useRoute()
const authStore = useAuthStore()
const projectsStore = useProjectsStore()
const { projects, currentProject } = storeToRefs(projectsStore)

const selectedProject = ref(null)

onMounted(async () => {
    // Ensure we have projects
    if (projects.value.length === 0) {
        await projectsStore.fetchProjects()
    }
    // Sync local ref with store
    if (currentProject.value) {
        selectedProject.value = currentProject.value.id
    }
})

// Watch for external changes (like selecting from the list view)
watch(currentProject, (newVal) => {
    selectedProject.value = newVal ? newVal.id : null
})

const projectOptions = computed(() => {
    return projects.value.map(p => ({ name: p.name, id: p.id }))
})

const getProjectName = (id) => {
    const p = projects.value.find(p => p.id === id)
    return p ? p.name : 'Unknown Project'
}

const isProjectMenuOpen = ref(false)

const selectProject = (projectId) => {
    selectedProject.value = projectId
    isProjectMenuOpen.value = false

    if (projectId) {
        projectsStore.selectProject(projectId)
    } else {
        // Clear selection
        projectsStore.currentProject = null
        localStorage.removeItem('active_project_id')
    }
    // Reload page to ensure all data is refreshed with new context
    window.location.reload()
}

const handleLogout = () => {
    authStore.logout()
    router.push('/login')
}

// Check active route for styling
const isActive = (path) => {
    // Exact match for home, startsWith for others
    if (path === '/') return route.path === '/'
    return route.path.startsWith(path)
}

const navItems = computed(() => {
    const items = [
        { path: '/', icon: '🏠', tooltip: 'Home' },
        { path: '/projects', icon: '📂', tooltip: 'Projects' },
        { path: '/flexible', icon: '🖌️', tooltip: 'Flexible Generation' },
        { path: '/albums', icon: '🖼️', tooltip: 'Library' },
        { path: '/characters', icon: '👥', tooltip: 'Characters' },
        { path: '/image-to-prompt', icon: '✨', tooltip: 'Image to Prompt' }
    ]

    if (authStore.isAdmin()) {
        items.push({ path: '/admin/approvals', icon: '🛡️', tooltip: 'Approvals' })
    }

    return items
})
</script>

<template>
    <div class="contents">
        <!-- Sidebar (Desktop -> Top Bar) -->
        <nav
            class="hidden md:flex glass-panel w-[calc(100%-2rem)] mx-4 mt-4 mb-2 flex-row items-center px-8 py-3 rounded-2xl z-40 border border-white/5 bg-slate-900/50 backdrop-blur-md shrink-0 justify-between">

            <!-- Logo -->
            <img src="/web-app-manifest-512x512.png" alt="Logo"
                class="w-10 h-10 rounded-xl shadow-lg shadow-violet-500/20 shrink-0" />

            <!-- Project Switcher -->
            <div class="hidden lg:block ml-4 relative">
                <button @click="isProjectMenuOpen = !isProjectMenuOpen"
                    class="flex items-center gap-2 px-3 py-1.5 rounded-lg hover:bg-white/5 transition-colors text-slate-400 hover:text-slate-200">
                    <i v-if="selectedProject" class="pi pi-folder text-violet-400"></i>
                    <i v-else class="pi pi-user"></i>

                    <span class="max-w-[150px] truncate font-medium">
                        {{ selectedProject ? getProjectName(selectedProject) : 'Personal Workspace' }}
                    </span>

                    <i class="pi pi-chevron-down text-xs ml-1 opacity-50"></i>
                </button>

                <!-- Custom Dropdown Menu -->
                <div v-if="isProjectMenuOpen"
                    class="absolute top-full left-0 mt-2 w-56 bg-slate-900 border border-white/10 shadow-xl rounded-xl overflow-hidden z-50 py-1">

                    <!-- Personal Workspace Option -->
                    <div @click="selectProject(null)"
                        class="flex items-center gap-3 px-4 py-3 hover:bg-white/5 cursor-pointer transition-colors"
                        :class="{ 'text-violet-400 bg-white/5': !selectedProject, 'text-slate-300': selectedProject }">
                        <i class="pi pi-user"></i>
                        <span class="font-medium">Personal Workspace</span>
                        <i v-if="!selectedProject" class="pi pi-check ml-auto text-sm"></i>
                    </div>

                    <div class="h-px bg-white/5 my-1"></div>

                    <!-- Project Options -->
                    <div v-for="project in projects" :key="project.id" @click="selectProject(project.id)"
                        class="flex items-center gap-3 px-4 py-3 hover:bg-white/5 cursor-pointer transition-colors"
                        :class="{ 'text-violet-400 bg-white/5': selectedProject === project.id, 'text-slate-300': selectedProject !== project.id }">
                        <i class="pi pi-folder"></i>
                        <span class="truncate">{{ project.name }}</span>
                        <i v-if="selectedProject === project.id" class="pi pi-check ml-auto text-sm"></i>
                    </div>

                    <div v-if="projects.length === 0" class="px-4 py-3 text-slate-500 text-sm font-italic">
                        No projects found
                    </div>
                </div>

                <!-- Backdrop to close on click outside -->
                <div v-if="isProjectMenuOpen" @click="isProjectMenuOpen = false"
                    class="fixed inset-0 z-40 bg-transparent"></div>
            </div>

            <!-- Nav Items -->
            <div class="flex flex-row gap-2 items-center justify-center flex-1 mx-8">
                <div v-for="item in navItems" :key="item.path" :class="[
                    'px-4 py-2 flex items-center gap-2 rounded-xl cursor-pointer transition-all duration-300',
                    isActive(item.path)
                        ? 'bg-white/10 text-slate-50 shadow-inner'
                        : 'text-slate-400 hover:bg-white/5 hover:text-slate-50'
                ]" @click="router.push(item.path)" v-tooltip.bottom="item.tooltip">
                    <span class="text-xl">{{ item.icon }}</span>
                    <span class="text-sm font-medium hidden lg:block">{{ item.tooltip }}</span>
                </div>
            </div>

            <!-- Right Actions -->
            <div class="flex items-center gap-4 shrink-0">
                <div @click="handleLogout"
                    class="w-10 h-10 rounded-xl bg-red-500/10 text-red-400 flex items-center justify-center cursor-pointer hover:bg-red-500/20 transition-all font-bold"
                    v-tooltip.bottom="'Logout'">
                    <i class="pi pi-power-off"></i>
                </div>
                <!-- Profile Avatar Placeholder -->
                <div class="w-10 h-10 rounded-full bg-slate-800 border-2 border-violet-600 flex items-center justify-center font-bold text-slate-50 cursor-pointer hover:scale-105 transition-all"
                    title="Profile">
                    U
                </div>
            </div>
        </nav>

        <!-- Mobile Bottom Nav -->
        <nav
            class="md:hidden fixed bottom-0 left-0 right-0 h-16 bg-slate-900/90 backdrop-blur-xl border-t border-white/10 z-50 flex justify-around items-center px-2">
            <div v-for="item in navItems" :key="item.path" :class="[
                'flex flex-col items-center gap-1 p-2 rounded-xl transition-all',
                isActive(item.path)
                    ? 'text-white bg-white/10 relative top-[-10px] shadow-lg shadow-violet-500/20 border border-violet-500/30'
                    : 'text-slate-400 hover:text-slate-200'
            ]" @click="router.push(item.path)">
                <span class="text-xl">{{ item.icon }}</span>
            </div>
        </nav>
    </div>
</template>

<style scoped>
.glass-panel {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
</style>
