import { useMutation } from "@tanstack/react-query";
import { useState } from "react";
import { toast } from "sonner";
import { Check, Save, Square, Stethoscope, Trash2 } from "lucide-react";
import { Card } from "~/client/components/ui/card";
import { Button } from "~/client/components/ui/button";
import { Input } from "~/client/components/ui/input";
import { Label } from "~/client/components/ui/label";
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "~/client/components/ui/select";
import {
	AlertDialog,
	AlertDialogAction,
	AlertDialogCancel,
	AlertDialogContent,
	AlertDialogDescription,
	AlertDialogFooter,
	AlertDialogHeader,
	AlertDialogTitle,
} from "~/client/components/ui/alert-dialog";
import type { Repository } from "~/client/lib/types";
import { REPOSITORY_BASE } from "~/client/lib/constants";
import { formatDateTime, formatTimeAgo } from "~/client/lib/datetime";
import {
	cancelDoctorMutation,
	deleteRepositoryMutation,
	startDoctorMutation,
	updateRepositoryMutation,
} from "~/client/api-client/@tanstack/react-query.gen";
import type { CompressionMode, RepositoryConfig } from "~/schemas/restic";
import { DoctorReport } from "../components/doctor-report";
import { parseError } from "~/client/lib/errors";
import { useNavigate } from "react-router";

type Props = {
	repository: Repository;
};

const getEffectiveLocalPath = (repository: Repository): string | null => {
	if (repository.type !== "local") return null;
	const config = repository.config as { name: string; path?: string; isExistingRepository?: boolean };

	if (config.isExistingRepository) {
		return config.path ?? null;
	}

	const basePath = config.path || REPOSITORY_BASE;
	return `${basePath}/${config.name}`;
};

export const RepositoryInfoTabContent = ({ repository }: Props) => {
	const [name, setName] = useState(repository.name);
	const [compressionMode, setCompressionMode] = useState<CompressionMode>(repository.compressionMode || "off");
	const [showConfirmDialog, setShowConfirmDialog] = useState(false);
	const [showDeleteConfirm, setShowDeleteConfirm] = useState(false);
	const navigate = useNavigate();

	const effectiveLocalPath = getEffectiveLocalPath(repository);

	const updateMutation = useMutation({
		...updateRepositoryMutation(),
		onSuccess: () => {
			toast.success("Repository updated successfully");
			setShowConfirmDialog(false);
		},
		onError: (error) => {
			toast.error("Failed to update repository", { description: error.message, richColors: true });
			setShowConfirmDialog(false);
		},
	});

	const deleteRepo = useMutation({
		...deleteRepositoryMutation(),
		onSuccess: () => {
			toast.success("Repository deleted successfully");
			void navigate("/repositories");
		},
		onError: (error) => {
			toast.error("Failed to delete repository", {
				description: parseError(error)?.message,
			});
		},
	});

	const startDoctor = useMutation({
		...startDoctorMutation(),
		onError: (error) => {
			toast.error("Failed to start doctor", {
				description: parseError(error)?.message,
			});
		},
	});

	const cancelDoctor = useMutation({
		...cancelDoctorMutation(),
		onSuccess: () => {
			toast.info("Doctor operation cancelled");
		},
		onError: (error) => {
			toast.error("Failed to cancel doctor", {
				description: parseError(error)?.message,
			});
		},
	});

	const handleSubmit = (e: React.FormEvent) => {
		e.preventDefault();
		setShowConfirmDialog(true);
	};

	const confirmUpdate = () => {
		updateMutation.mutate({
			path: { id: repository.id },
			body: { name, compressionMode },
		});
	};

	const handleConfirmDelete = () => {
		setShowDeleteConfirm(false);
		deleteRepo.mutate({ path: { id: repository.id } });
	};

	const hasChanges =
		name !== repository.name || compressionMode !== ((repository.compressionMode as CompressionMode) || "off");

	const config = repository.config as RepositoryConfig;

	return (
		<>
			<Card className="p-6">
				<form onSubmit={handleSubmit} className="space-y-6">
					<div className="flex flex-col sm:flex-row items-center justify-between gap-2">
						<div>
							<span className="text-lg font-semibold mb-4">Repository Settings</span>
						</div>
						<div className="flex gap-4">
							{repository.status === "doctor" ? (
								<Button
									type="button"
									variant="destructive"
									loading={cancelDoctor.isPending}
									onClick={() => cancelDoctor.mutate({ path: { id: repository.id } })}
								>
									<Square className="h-4 w-4 mr-2" />
									<span>Cancel doctor</span>
								</Button>
							) : (
								<Button
									type="button"
									onClick={() => startDoctor.mutate({ path: { id: repository.id } })}
									disabled={startDoctor.isPending}
								>
									<Stethoscope className="h-4 w-4 mr-2" />
									Run doctor
								</Button>
							)}
							<Button
								type="button"
								variant="destructive"
								onClick={() => setShowDeleteConfirm(true)}
								disabled={deleteRepo.isPending}
							>
								<Trash2 className="h-4 w-4 mr-2" />
								Delete
							</Button>
						</div>
					</div>
					<div className="grid grid-cols-1 md:grid-cols-2 gap-4">
						<div className="space-y-2">
							<Label htmlFor="name">Name</Label>
							<Input
								id="name"
								value={name}
								onChange={(e) => setName(e.target.value)}
								placeholder="Repository name"
								maxLength={32}
								minLength={2}
							/>
							<p className="text-sm text-muted-foreground">Unique identifier for the repository.</p>
						</div>
						<div className="space-y-2">
							<Label htmlFor="compressionMode">Compression mode</Label>
							<Select value={compressionMode} onValueChange={(val) => setCompressionMode(val as CompressionMode)}>
								<SelectTrigger id="compressionMode">
									<SelectValue placeholder="Select compression mode" />
								</SelectTrigger>
								<SelectContent>
									<SelectItem value="off">Off</SelectItem>
									<SelectItem value="auto">Auto</SelectItem>
									<SelectItem value="max">Max</SelectItem>
								</SelectContent>
							</Select>
							<p className="text-sm text-muted-foreground">Compression level for new data.</p>
						</div>
					</div>

					<div>
						<h3 className="text-lg font-semibold mb-4">Repository Information</h3>
						<div className="grid grid-cols-1 md:grid-cols-2 gap-4">
							<div>
								<div className="text-sm font-medium text-muted-foreground">Backend</div>
								<p className="mt-1 text-sm">{repository.type}</p>
							</div>
							<div>
								<div className="text-sm font-medium text-muted-foreground">Status</div>
								<p className="mt-1 text-sm">{repository.status || "unknown"}</p>
							</div>
							{effectiveLocalPath && (
								<div className="md:col-span-2">
									<div className="text-sm font-medium text-muted-foreground">Local path</div>
									<p className="mt-1 text-sm font-mono">{effectiveLocalPath}</p>
								</div>
							)}
							<div>
								<div className="text-sm font-medium text-muted-foreground">Created at</div>
								<p className="mt-1 text-sm">{formatDateTime(repository.createdAt)}</p>
							</div>
							<div>
								<div className="text-sm font-medium text-muted-foreground">Last checked</div>
								<p className="mt-1 text-sm">{formatTimeAgo(repository.lastChecked)}</p>
							</div>
							{config.cacert && (
								<div>
									<div className="text-sm font-medium text-muted-foreground">CA Certificate</div>
									<p className="mt-1 text-sm">
										<span className="text-green-500">configured</span>
									</p>
								</div>
							)}
							{"insecureTls" in config && (
								<div>
									<div className="text-sm font-medium text-muted-foreground">TLS Certificate Validation</div>
									<p className="mt-1 text-sm">
										{config.insecureTls ? (
											<span className="text-red-500">disabled</span>
										) : (
											<span className="text-green-500">enabled</span>
										)}
									</p>
								</div>
							)}
						</div>
					</div>

					{repository.lastError && (
						<div>
							<div className="flex items-center justify-between mb-4">
								<h3 className="text-lg font-semibold text-red-500">Last Error</h3>
							</div>
							<div className="bg-red-500/10 border border-red-500/20 rounded-md p-4">
								<p className="text-sm text-red-500 wrap-break-word">{repository.lastError}</p>
							</div>
						</div>
					)}

					<div>
						<h3 className="text-lg font-semibold mb-4">Configuration</h3>
						<div className="bg-muted/50 rounded-md p-4">
							<pre className="text-sm overflow-auto">{JSON.stringify(repository.config, null, 2)}</pre>
						</div>
					</div>

					<DoctorReport repositoryStatus={repository.status} result={repository.doctorResult} />

					<div className="flex justify-end pt-4 border-t">
						<Button type="submit" disabled={!hasChanges || updateMutation.isPending} loading={updateMutation.isPending}>
							<Save className="h-4 w-4 mr-2" />
							Save Changes
						</Button>
					</div>
				</form>
			</Card>

			<AlertDialog open={showConfirmDialog} onOpenChange={setShowConfirmDialog}>
				<AlertDialogContent>
					<AlertDialogHeader>
						<AlertDialogTitle>Update repository</AlertDialogTitle>
						<AlertDialogDescription>Are you sure you want to update the repository settings?</AlertDialogDescription>
					</AlertDialogHeader>
					<AlertDialogFooter>
						<AlertDialogCancel>Cancel</AlertDialogCancel>
						<AlertDialogAction onClick={confirmUpdate}>
							<Check className="h-4 w-4" />
							Update
						</AlertDialogAction>
					</AlertDialogFooter>
				</AlertDialogContent>
			</AlertDialog>

			<AlertDialog open={showDeleteConfirm} onOpenChange={setShowDeleteConfirm}>
				<AlertDialogContent>
					<AlertDialogHeader>
						<AlertDialogTitle>Delete repository?</AlertDialogTitle>
						<AlertDialogDescription>
							Are you sure you want to delete the repository <strong>{repository.name}</strong>? This will not remove
							the actual data from the backend storage, only the repository configuration will be deleted.
							<br />
							<br />
							All backup schedules associated with this repository will also be removed.
						</AlertDialogDescription>
					</AlertDialogHeader>
					<div className="flex gap-3 justify-end">
						<AlertDialogCancel>Cancel</AlertDialogCancel>
						<AlertDialogAction
							onClick={handleConfirmDelete}
							className="bg-destructive text-destructive-foreground hover:bg-destructive/90"
						>
							<Trash2 className="h-4 w-4 mr-2" />
							Delete repository
						</AlertDialogAction>
					</div>
				</AlertDialogContent>
			</AlertDialog>
		</>
	);
};
