"use client";

import { Cloud, FolderOpen, Loader2, Upload } from "lucide-react";
import { useEffect, useState } from "react";
import { ProtectedRoute } from "@/components/protected-route";
import { Button } from "@/components/ui/button";
import {
	Card,
	CardContent,
	CardDescription,
	CardHeader,
	CardTitle,
} from "@/components/ui/card";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import { useTask } from "@/contexts/task-context";

function AdminPage() {
	console.log("AdminPage component rendered!");
	const [fileUploadLoading, setFileUploadLoading] = useState(false);
	const [pathUploadLoading, setPathUploadLoading] = useState(false);
	const [selectedFile, setSelectedFile] = useState<File | null>(null);
	const [folderPath, setFolderPath] = useState("/app/openrag-documents/");
	const [bucketUploadLoading, setBucketUploadLoading] = useState(false);
	const [bucketUrl, setBucketUrl] = useState("s3://");
	const [uploadStatus, setUploadStatus] = useState<string>("");
	const [awsEnabled, setAwsEnabled] = useState(false);
	const { addTask } = useTask();

	useEffect(() => {
		console.log("AdminPage useEffect running - checking AWS availability");
		const checkAws = async () => {
			try {
				console.log("Making request to /api/upload_options");
				const res = await fetch("/api/upload_options");
				console.log("Response status:", res.status, "OK:", res.ok);
				if (res.ok) {
					const data = await res.json();
					console.log("Response data:", data);
					setAwsEnabled(Boolean(data.aws));
				}
			} catch (err) {
				console.error("Failed to check AWS availability", err);
			}
		};
		checkAws();
	}, []);

	const handleFileUpload = async (e: React.FormEvent) => {
		e.preventDefault();
		if (!selectedFile) return;

		setFileUploadLoading(true);
		setUploadStatus("");

		try {
			const formData = new FormData();
			formData.append("file", selectedFile);

			const response = await fetch("/api/router/upload_ingest", {
				method: "POST",
				body: formData,
			});

			const result = await response.json();

			if (response.ok) {
				setUploadStatus(`File uploaded successfully! ID: ${result.id}`);
				setSelectedFile(null);
				// Reset the file input
				const fileInput = document.getElementById(
					"file-input",
				) as HTMLInputElement;
				if (fileInput) fileInput.value = "";
			} else {
				setUploadStatus(`Error: ${result.error || "Upload failed"}`);
			}
		} catch (error) {
			setUploadStatus(
				`Error: ${error instanceof Error ? error.message : "Upload failed"}`,
			);
		} finally {
			setFileUploadLoading(false);
		}
	};

	const handleBucketUpload = async (e: React.FormEvent) => {
		e.preventDefault();
		if (!bucketUrl.trim()) return;

		setBucketUploadLoading(true);
		setUploadStatus("");

		try {
			const response = await fetch("/api/upload_bucket", {
				method: "POST",
				headers: {
					"Content-Type": "application/json",
				},
				body: JSON.stringify({ s3_url: bucketUrl }),
			});

			const result = await response.json();

			if (response.status === 201) {
				const taskId = result.task_id || result.id;
				const totalFiles = result.total_files || 0;

				if (!taskId) {
					throw new Error("No task ID received from server");
				}

				addTask(taskId);
				setUploadStatus(
					`🔄 Processing started for ${totalFiles} files. Check the task notification panel for real-time progress. (Task ID: ${taskId})`,
				);
				setBucketUrl("");
			} else {
				setUploadStatus(`Error: ${result.error || "Bucket processing failed"}`);
			}
		} catch (error) {
			setUploadStatus(
				`Error: ${error instanceof Error ? error.message : "Bucket processing failed"}`,
			);
		} finally {
			setBucketUploadLoading(false);
		}
	};

	const handlePathUpload = async (e: React.FormEvent) => {
		e.preventDefault();
		if (!folderPath.trim()) return;

		setPathUploadLoading(true);
		setUploadStatus("");

		try {
			const response = await fetch("/api/upload_path", {
				method: "POST",
				headers: {
					"Content-Type": "application/json",
				},
				body: JSON.stringify({ path: folderPath }),
			});

			const result = await response.json();

			if (response.status === 201) {
				// New flow: Got task ID, use centralized tracking
				const taskId = result.task_id || result.id;
				const totalFiles = result.total_files || 0;

				if (!taskId) {
					throw new Error("No task ID received from server");
				}

				// Add task to centralized tracking
				addTask(taskId);

				setUploadStatus(
					`🔄 Processing started for ${totalFiles} files. Check the task notification panel for real-time progress. (Task ID: ${taskId})`,
				);
				setFolderPath("");
				setPathUploadLoading(false);
			} else if (response.ok) {
				// Original flow: Direct response with results
				const successful =
					result.results?.filter(
						(r: { status: string }) => r.status === "indexed",
					).length || 0;
				const total = result.results?.length || 0;
				setUploadStatus(
					`Path processed successfully! ${successful}/${total} files indexed.`,
				);
				setFolderPath("");
				setPathUploadLoading(false);
			} else {
				setUploadStatus(`Error: ${result.error || "Path upload failed"}`);
				setPathUploadLoading(false);
			}
		} catch (error) {
			setUploadStatus(
				`Error: ${error instanceof Error ? error.message : "Path upload failed"}`,
			);
			setPathUploadLoading(false);
		}
	};

	// Remove the old pollPathTaskStatus function since we're using centralized system

	return (
		<div className="space-y-8">
			<div>
				<h1 className="text-3xl font-bold">Ingest</h1>
				<p className="text-muted-foreground">
					Upload and manage documents in your database
				</p>
			</div>

			{uploadStatus && (
				<Card
					className={
						uploadStatus.includes("Error")
							? "border-destructive"
							: "border-green-500"
					}
				>
					<CardContent className="pt-6">
						<p
							className={
								uploadStatus.includes("Error")
									? "text-destructive"
									: "text-green-600"
							}
						>
							{uploadStatus}
						</p>
					</CardContent>
				</Card>
			)}

			<div className="grid gap-6 md:grid-cols-3">
				<Card>
					<CardHeader>
						<CardTitle className="flex items-center gap-2">
							<Upload className="h-5 w-5" />
							Upload File
						</CardTitle>
						<CardDescription>
							Upload a single document to be indexed and searchable
						</CardDescription>
					</CardHeader>
					<CardContent>
						<form onSubmit={handleFileUpload} className="space-y-4">
							<div className="space-y-2">
								<Label htmlFor="file-input">Select File</Label>
								<Input
									id="file-input"
									type="file"
									onChange={(e) => setSelectedFile(e.target.files?.[0] || null)}
									accept=".pdf,.doc,.docx,.txt,.md"
									className="cursor-pointer"
								/>
							</div>
							<Button
								type="submit"
								disabled={!selectedFile || fileUploadLoading}
								className="w-full"
							>
								{fileUploadLoading ? (
									<>
										<Loader2 className="mr-2 h-4 w-4 animate-spin" />
										Uploading...
									</>
								) : (
									<>
										<Upload className="mr-2 h-4 w-4" />
										Upload File
									</>
								)}
							</Button>
						</form>
					</CardContent>
				</Card>

				<Card>
					<CardHeader>
						<CardTitle className="flex items-center gap-2">
							<FolderOpen className="h-5 w-5" />
							Upload Folder
						</CardTitle>
						<CardDescription>
							Process all documents in a folder path on the server
						</CardDescription>
					</CardHeader>
					<CardContent>
						<form onSubmit={handlePathUpload} className="space-y-4">
							<div className="space-y-2">
								<Label htmlFor="folder-path">Folder Path</Label>
								<Input
									id="folder-path"
									type="text"
									placeholder="/path/to/documents"
									value={folderPath}
									onChange={(e) => setFolderPath(e.target.value)}
								/>
							</div>
							<Button
								type="submit"
								disabled={!folderPath.trim() || pathUploadLoading}
								className="w-full"
							>
								{pathUploadLoading ? (
									<>
										<Loader2 className="mr-2 h-4 w-4 animate-spin" />
										Processing...
									</>
								) : (
									<>
										<FolderOpen className="mr-2 h-4 w-4" />
										Process Folder
									</>
								)}
							</Button>
						</form>
					</CardContent>
				</Card>
				{awsEnabled && (
					<Card>
						<CardHeader>
							<CardTitle className="flex items-center gap-2">
								<Cloud className="h-5 w-5" />
								Process Bucket
							</CardTitle>
							<CardDescription>
								Process all documents from an S3 bucket. AWS credentials must be
								set as environment variables.
							</CardDescription>
						</CardHeader>
						<CardContent>
							<form onSubmit={handleBucketUpload} className="space-y-4">
								<div className="space-y-2">
									<Label htmlFor="bucket-url">S3 URL</Label>
									<Input
										id="bucket-url"
										type="text"
										placeholder="s3://bucket/path"
										value={bucketUrl}
										onChange={(e) => setBucketUrl(e.target.value)}
									/>
								</div>
								<Button
									type="submit"
									disabled={!bucketUrl.trim() || bucketUploadLoading}
									className="w-full"
								>
									{bucketUploadLoading ? (
										<>
											<Loader2 className="mr-2 h-4 w-4 animate-spin" />
											Processing...
										</>
									) : (
										<>
											<Cloud className="mr-2 h-4 w-4" />
											Process Bucket
										</>
									)}
								</Button>
							</form>
						</CardContent>
					</Card>
				)}
			</div>
		</div>
	);
}

export default function ProtectedAdminPage() {
	return (
		<ProtectedRoute>
			<AdminPage />
		</ProtectedRoute>
	);
}