import { SettingStatusEnum, status } from "../utils/SettingStatus.mjs";
import { __ID__ } from "../consts.mjs";
import { Logger } from "../utils/Logger.mjs";

const { DialogV2 } = foundry.applications.api;

const key = `chatImageLinks`;
const IMAGE_TYPES = [
	`png`,
	`jpg`,
	`jpeg`,
	`webp`,
	`svg`,
];

export function chatImageLinks() {
	status[key] = SettingStatusEnum.Unknown;

	const prevented = Hooks.call(`${__ID__}.preventSetting`, key);
	if (!prevented) {
		Logger.log(`Preventing setting "${key}" from being registered`);
		status[key] = SettingStatusEnum.Blocked;
		return;
	};

	// #region Registration
	Logger.log(`Registering setting: ${key}`);
	game.settings.register(__ID__, key, {
		name: `OFT.setting.${key}.name`,
		hint: `OFT.setting.${key}.hint`,
		scope: `user`,
		type: Boolean,
		default: true,
		config: true,
		requiresReload: true,
	});

	game.settings.register(__ID__, key + `-showPromptAgain`, {
		scope: `user`,
		type: Boolean,
		default: true,
		config: false,
	});
	// #endregion Registration

	// #region Implementation
	if (game.settings.get(__ID__, key)) {
		Logger.log(`setting:${key} | Adding text enricher`);

		// MARK: Enricher
		const pattern = new RegExp(
			`(?<!=|")(image:\\/\\/.*\\.(?:${IMAGE_TYPES.join(`|`)}))`,
			`gi`,
		);

		CONFIG.TextEditor.enrichers.push({
			pattern,
			replaceParent: true,
			enricher: async (url) => {
				Logger.debug(url);
				url = url[0].replace(/^image:\/\//, ``);
				const secure = `https://${url}`;
				const insecure = `http://${url}`;

				if (await isAcceptableImage(secure)) {
					const img = document.createElement(`img`);
					img.src = secure;
					img.alt = secure;
					return img;
				};

				if (await isAcceptableImage(insecure)) {
					const img = document.createElement(`img`);
					img.src = insecure;
					img.alt = insecure;
					return img;
				};

				return null;
			},
		});

		// MARK: Chat Input
		// Hooks.on(`chatMessage`, (chatLog, message, options) => {
		// 	if (!game.settings.get(__ID__, key)) { return };

		// 	const match = message.match(pattern);
		// 	if (!match) { return };

		// 	DialogV2.wait({
		// 		rejectClose: false,
		// 		content: game.i18n.localize(`OFT.dialogs.chatImageLinks.didYouKnowImageLink`),
		// 		buttons: [
		// 			{ action: ``, label: `OFT.dialogs.chatImageLinks.convertAndDontShowAgain` },
		// 			{ action: ``, label: `OFT.dialogs.chatImageLinks.justConvert` },
		// 			{ action: ``, label: `OFT.dialogs.chatImageLinks.ignoreAndDontShowAgain` },
		// 			{ action: ``, label: `OFT.dialogs.chatImageLinks.disableEntirely` },
		// 		],
		// 	})
		// 		.then((selected) => {
		// 			chatLog.processMessage(message, options);
		// 		});

		// 	return false;
		// });
	}
	// #endregion Implementation

	status[key] = SettingStatusEnum.Registered;
};

// #region Helpers
async function isAcceptableImage(url) {
	try {
		const response = await fetch(url, { method: `HEAD` });
		const contentType = response.headers.get(`Content-Type`);
		Logger.debug(`Image data:`, { url, contentType });
		let [ superType, subtype ] = contentType.split(`/`);
		if (superType !== `image`) {
			return false;
		};
		if (subtype.includes(`+`)) {
			subtype = subtype.split(`+`, 2).at(0);
		};
		return IMAGE_TYPES.includes(subtype);
	} catch {
		return false;
	};
};
// #endregion Helpers