import config from '@/config';
import Message from '@/message';
import Module from '@/module';
import autobind from 'autobind-decorator';
import { z } from 'zod';

export default class extends Module {
	public readonly name = 'github-status';

	private readonly schema = z.object({
		status: z.object({
			description: z.string(),
			indicator: z.enum(['none', 'minor', 'major', 'critical', 'maintenance'])
		})
	});

	private indicatorString: Record<z.infer<typeof this.schema>['status']['indicator'], string> = {
		none: '今はGitHubなんともないみたい！！',
		minor: 'GitHubにちょっとしたエラーが起きてるかも',
		major: 'GitHubにエラーが起きてるみたい',
		critical: 'GitHubに重大なエラーが起きてるみたい',
		maintenance: 'GitHubがメンテナンス中みたい'
	};

	private indicator: z.infer<typeof this.schema>['status']['indicator'] = 'none';
	private description: z.infer<typeof this.schema>['status']['description'] = '';

	@autobind
	public install() {
		setInterval(this.updateStatus, 10 * 60 * 1000);
		setInterval(this.postStatus, 60 * 60 * 1000);

		this.updateStatus();
		this.postStatus();

		return {
			mentionHook: this.mentionHook
		};
	}

	@autobind
	private async updateStatus() {
		try {
			const response = await fetch('https://www.githubstatus.com/api/v2/status.json');
			const data = await response.json();

			const result = this.schema.safeParse(data);

			if (result.success) {
				this.indicator = result.data.status.indicator;
				this.description = result.data.status.description;
			} else {
				this.log('Validation failed.');
				console.warn(result.error);
			}
		} catch (error) {
			this.log('Failed to fetch status from GitHub.');
			console.warn(error);
		}
	}

	@autobind
	private postStatus() {
		switch (this.indicator) {
			case 'minor':
			case 'major':
			case 'critical':
				this.ai.post({
					text: `${this.indicatorString[this.indicator]}\nせつめい: ${this.description}\nhttps://www.githubstatus.com/`
				});

				this.log('Report posted.');
				break;

			default:
				break;
		}
	}

	@autobind
	private async mentionHook(msg: Message) {
		if (msg.text?.toLowerCase().includes('github')) {
			msg.reply(`${this.indicatorString[this.indicator]}\nせつめい: ${this.description}\nhttps://www.githubstatus.com`);
			return true;
		} else {
			return false;
		}
	}
}