"use client"

import { $fetch } from "@lib/api"
import { Button } from "@repo/ui/components/button"
import { Skeleton } from "@repo/ui/components/skeleton"
import type { ConnectionResponseSchema } from "@repo/validation/api"
import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query"
import { GoogleDrive, Notion, OneDrive } from "@ui/assets/icons"
import { useCustomer } from "autumn-js/react"
import { Trash2 } from "lucide-react"
import { AnimatePresence, motion } from "motion/react"
import { useEffect, useState } from "react"
import { toast } from "sonner"
import type { z } from "zod"
import { analytics } from "@/lib/analytics"
import { useProject } from "@/stores"

// Define types
type Connection = z.infer<typeof ConnectionResponseSchema>

// Connector configurations
const CONNECTORS = {
	"google-drive": {
		title: "Google Drive",
		description: "Connect your Google Docs, Sheets, and Slides",
		icon: GoogleDrive,
	},
	notion: {
		title: "Notion",
		description: "Import your Notion pages and databases",
		icon: Notion,
	},
	onedrive: {
		title: "OneDrive",
		description: "Access your Microsoft Office documents",
		icon: OneDrive,
	},
} as const

type ConnectorProvider = keyof typeof CONNECTORS

export function ConnectionsTabContent() {
	const queryClient = useQueryClient()
	const { selectedProject } = useProject()
	const autumn = useCustomer()
	const [isProUser, setIsProUser] = useState(false)

	const handleUpgrade = async () => {
		try {
			await autumn.attach({
				productId: "consumer_pro",
				successUrl: "https://app.supermemory.ai/",
			})
			window.location.reload()
		} catch (error) {
			console.error(error)
		}
	}

	// Set pro user status when autumn data loads
	useEffect(() => {
		if (!autumn.isLoading) {
			setIsProUser(
				autumn.customer?.products.some(
					(product) => product.id === "consumer_pro",
				) ?? false,
			)
		}
	}, [autumn.isLoading, autumn.customer])

	// Get connections data directly from autumn customer
	const connectionsFeature = autumn.customer?.features?.connections
	const connectionsUsed = connectionsFeature?.usage ?? 0
	const connectionsLimit = connectionsFeature?.included_usage ?? 0

	const canAddConnection = connectionsUsed < connectionsLimit

	// Fetch connections
	const {
		data: connections = [],
		isLoading,
		error,
	} = useQuery({
		queryKey: ["connections"],
		queryFn: async () => {
			const response = await $fetch("@post/connections/list", {
				body: {
					containerTags: [],
				},
			})

			if (response.error) {
				throw new Error(response.error?.message || "Failed to load connections")
			}

			return response.data as Connection[]
		},
		staleTime: 30 * 1000,
		refetchInterval: 60 * 1000,
	})

	// Show error toast if connections fail to load
	useEffect(() => {
		if (error) {
			toast.error("Failed to load connections", {
				description: error instanceof Error ? error.message : "Unknown error",
			})
		}
	}, [error])

	// Add connection mutation
	const addConnectionMutation = useMutation({
		mutationFn: async (provider: ConnectorProvider) => {
			// Check if user can add connections
			if (!canAddConnection && !isProUser) {
				throw new Error(
					"Free plan doesn't include connections. Upgrade to Pro for unlimited connections.",
				)
			}

			const response = await $fetch("@post/connections/:provider", {
				params: { provider },
				body: {
					redirectUrl: window.location.href,
					containerTags: [selectedProject],
				},
			})

			// biome-ignore lint/style/noNonNullAssertion: its fine
			if ("data" in response && !("error" in response.data!)) {
				return response.data
			}

			throw new Error(response.error?.message || "Failed to connect")
		},
		onSuccess: (data, provider) => {
			analytics.connectionAdded(provider)
			analytics.connectionAuthStarted()
			autumn.track({
				featureId: "connections",
				value: 1,
			})
			if (data?.authLink) {
				window.location.href = data.authLink
			}
		},
		onError: (error, provider) => {
			analytics.connectionAuthFailed()
			toast.error(`Failed to connect ${provider}`, {
				description: error instanceof Error ? error.message : "Unknown error",
			})
		},
	})

	// Delete connection mutation
	const deleteConnectionMutation = useMutation({
		mutationFn: async (connectionId: string) => {
			await $fetch(`@delete/connections/${connectionId}`)
		},
		onSuccess: () => {
			analytics.connectionDeleted()
			toast.success(
				"Connection removal has started. supermemory will permanently delete the documents in the next few minutes.",
			)
			queryClient.invalidateQueries({ queryKey: ["connections"] })
		},
		onError: (error) => {
			toast.error("Failed to remove connection", {
				description: error instanceof Error ? error.message : "Unknown error",
			})
		},
	})

	const getProviderIcon = (provider: string) => {
		const connector = CONNECTORS[provider as ConnectorProvider]
		if (connector) {
			const Icon = connector.icon
			return <Icon className="h-10 w-10" />
		}
		return <span className="text-2xl">📎</span>
	}

	return (
		<div className="space-y-4">
			<div className="mb-4">
				<p className="text-sm text-foreground/70">
					Connect your favorite services to import documents
				</p>
				{isProUser && !autumn.isLoading && (
					<p className="text-xs text-foreground/50 mt-1">
						{connectionsUsed} of {connectionsLimit} connections used
					</p>
				)}
				{!isProUser && !autumn.isLoading && (
					<p className="text-xs text-foreground/50 mt-1">
						Connections require a Pro subscription
					</p>
				)}
			</div>

			{/* Show upgrade prompt for free users */}
			{!autumn.isLoading && !isProUser && (
				<motion.div
					animate={{ opacity: 1, y: 0 }}
					className="p-4 bg-yellow-500/10 border border-yellow-500/20 rounded-lg"
					initial={{ opacity: 0, y: -10 }}
				>
					<p className="text-sm text-black-400 dark:text-yellow-400 mb-2">
						🔌 Connections are a Pro feature
					</p>
					<p className="text-xs text-foreground/60 mb-3">
						Connect Google Drive, Notion, OneDrive and more to automatically
						sync your documents.
					</p>
					<Button
						className="bg-yellow-500/20 text-black-400 hover:bg-yellow-500/30 dark:text-yellow-400 border-yellow-500/30 cursor-pointer"
						onClick={handleUpgrade}
						size="sm"
						variant="secondary"
					>
						Upgrade to Pro
					</Button>
				</motion.div>
			)}

			{isLoading ? (
				<div className="space-y-3">
					{[...Array(2)].map((_, i) => (
						<motion.div
							animate={{ opacity: 1 }}
							className="p-4 bg-foreground/5 rounded-lg"
							initial={{ opacity: 0 }}
							key={`skeleton-${Date.now()}-${i}`}
							transition={{ delay: i * 0.1 }}
						>
							<Skeleton className="h-12 w-full bg-foreground/10" />
						</motion.div>
					))}
				</div>
			) : connections.length === 0 ? (
				<motion.div
					animate={{ opacity: 1, scale: 1 }}
					className="text-center py-4"
					initial={{ opacity: 0, scale: 0.9 }}
					transition={{ type: "spring", damping: 20 }}
				>
					<p className="text-foreground/50 mb-2">No connections yet</p>
					<p className="text-xs text-foreground/40">
						Choose a service below to connect
					</p>
				</motion.div>
			) : (
				<motion.div className="space-y-2">
					<AnimatePresence>
						{connections.map((connection, index) => (
							<motion.div
								animate={{ opacity: 1, x: 0 }}
								className="flex items-center justify-between p-3 bg-foreground/5 rounded-lg hover:bg-foreground/10 transition-colors"
								exit={{ opacity: 0, x: 20 }}
								initial={{ opacity: 0, x: -20 }}
								key={connection.id}
								layout
								transition={{ delay: index * 0.05 }}
							>
								<div className="flex items-center gap-3">
									{getProviderIcon(connection.provider)}
									<div>
										<p className="font-medium text-foreground capitalize">
											{connection.provider.replace("-", " ")}
										</p>
										{connection.email && (
											<p className="text-sm text-foreground/60">
												{connection.email}
											</p>
										)}
									</div>
								</div>
								<motion.div
									whileHover={{ scale: 1.1 }}
									whileTap={{ scale: 0.9 }}
								>
									<Button
										className="text-foreground/50 hover:text-red-400 cursor-pointer"
										disabled={deleteConnectionMutation.isPending}
										onClick={() =>
											deleteConnectionMutation.mutate(connection.id)
										}
										size="icon"
										variant="ghost"
									>
										<Trash2 className="h-4 w-4" />
									</Button>
								</motion.div>
							</motion.div>
						))}
					</AnimatePresence>
				</motion.div>
			)}

			{/* Available Connections Section */}
			<div className="mt-6">
				<h3 className="text-lg font-medium mb-4">Available Connections</h3>
				<div className="grid gap-3">
					{Object.entries(CONNECTORS).map(([provider, config], index) => {
						const Icon = config.icon
						return (
							<motion.div
								animate={{ opacity: 1, y: 0 }}
								initial={{ opacity: 0, y: 20 }}
								key={provider}
								transition={{ delay: index * 0.05 }}
							>
								<Button
									className="justify-start h-auto p-4 bg-foreground/5 hover:bg-foreground/10 border-foreground/10 w-full cursor-pointer"
									disabled={addConnectionMutation.isPending}
									onClick={() => {
										addConnectionMutation.mutate(provider as ConnectorProvider)
									}}
									variant="outline"
								>
									<Icon className="h-8 w-8 mr-3" />
									<div className="text-left">
										<div className="font-medium">{config.title}</div>
										<div className="text-sm text-foreground/60 mt-0.5">
											{config.description}
										</div>
									</div>
								</Button>
							</motion.div>
						)
					})}
				</div>
			</div>
		</div>
	)
}