import { createContext, useContext, type PropsWithChildren } from 'react';
import { auth, ThumbKey } from '@sd/client';

export type OperatingSystem = 'browser' | 'linux' | 'macOS' | 'windows' | 'unknown';

// This is copied from the Tauri Specta output.
// It will only exist on desktop
export type DragAndDropEvent =
	| { type: 'Hovered'; paths: string[]; x: number; y: number }
	| { type: 'Dropped'; paths: string[]; x: number; y: number }
	| { type: 'Cancelled' };

export type Result<T, E> = { status: 'ok'; data: T } | { status: 'error'; error: E };
export type OpenWithApplication = { url: string; name: string };

// Platform represents the underlying native layer the app is running on.
// This could be Tauri or web.
export type Platform = {
	platform: 'web' | 'tauri'; // This represents the specific platform implementation
	getThumbnailUrlByThumbKey: (thumbKey: ThumbKey) => string;
	getFileUrl: (libraryId: string, locationLocalId: number, filePathId: number) => string;
	getFileUrlByPath: (path: string) => string;
	getRemoteRspcEndpoint: (remote_identity: string) => {
		url: string;
		headers?: Record<string, string>;
	};
	constructRemoteRspcPath: (remote_identity: string, path: string) => string;
	openLink: (url: string) => void;
	// Tauri patches `window.confirm` to return `Promise` not `bool`
	confirm(msg: string, cb: (result: boolean) => void): void;
	getOs?(): Promise<OperatingSystem>;
	openDirectoryPickerDialog?(opts?: { title?: string; multiple: false }): Promise<null | string>;
	openDirectoryPickerDialog?(opts?: {
		title?: string;
		multiple?: boolean;
	}): Promise<null | string | string[]>;
	openFilePickerDialog?(): Promise<null | string | string[]>;
	saveFilePickerDialog?(opts?: { title?: string; defaultPath?: string }): Promise<string | null>;
	showDevtools?(): void;
	openPath?(path: string): void;
	openLogsDir?(): void;
	openTrashInOsExplorer?(): void;
	userHomeDir?(): Promise<string>;
	// Opens a file path with a given ID
	openFilePaths?(library: string, ids: number[]): any;
	openEphemeralFiles?(paths: string[]): any;
	revealItems?(
		library: string,
		items: (
			| { Location: { id: number } }
			| { FilePath: { id: number } }
			| { Ephemeral: { path: string } }
		)[]
	): Promise<unknown>;
	requestFdaMacos?(): void;
	getFilePathOpenWithApps?(
		library: string,
		ids: number[]
	): Promise<Result<OpenWithApplication[], null>>;
	reloadWebview?(): Promise<unknown>;
	getEphemeralFilesOpenWithApps?(paths: string[]): Promise<Result<OpenWithApplication[], null>>;
	openFilePathWith?(library: string, fileIdsAndAppUrls: [number, string][]): Promise<unknown>;
	openEphemeralFileWith?(pathsAndUrls: [string, string][]): Promise<unknown>;
	refreshMenuBar?(): Promise<unknown>;
	setMenuBarItemState?(id: string, enabled: boolean): Promise<unknown>;
	lockAppTheme?(themeType: 'Auto' | 'Light' | 'Dark'): any;
	subscribeToDragAndDropEvents?(callback: (event: DragAndDropEvent) => void): Promise<() => void>;
	updater?: {
		useSnapshot: () => UpdateStore;
		checkForUpdate(): Promise<Update | null>;
		installUpdate(): Promise<any>;
		runJustUpdatedCheck(onViewChangelog: () => void): Promise<void>;
	};
	auth: auth.ProviderConfig;
	landingApiOrigin: string;
};

export type Update = { version: string };
export type UpdateStore =
	| { status: 'idle' }
	| { status: 'loading' }
	| { status: 'error' }
	| { status: 'updateAvailable'; update: Update }
	| { status: 'noUpdateAvailable' }
	| { status: 'installing' };

// Keep this private and use through helpers below
const context = createContext<Platform>(undefined!);

// is a hook which allows you to fetch information about the current platform from the React context.
export function usePlatform(): Platform {
	const ctx = useContext(context);
	if (!ctx)
		throw new Error(
			"The 'PlatformProvider' has not been mounted above the current 'usePlatform' call."
		);

	return ctx;
}

// provides the platform context to the rest of the app through React context.
// Mount it near the top of your component tree.
export function PlatformProvider({
	platform,
	children
}: PropsWithChildren<{ platform: Platform }>) {
	return <context.Provider value={platform}>{children}</context.Provider>;
}