import Message from "@/message"
import Module from "@/module"
import serifs from "@/serifs"
import { safeForInterpolate } from "../../../../NullcatChan-old/src/utils/safe-for-interpolate"
import autobind from "autobind-decorator"

const titles = ["さん", "くん", "君", "ちゃん", "様", "先生"]

export default class extends Module {
	public readonly name = "core"

	@autobind
	public install() {
		return {
			mentionHook: this.mentionHook,
			contextHook: this.contextHook,
		}
	}

	@autobind
	private async mentionHook(msg: Message) {
		if (!msg.text) return false

		return this.transferBegin(msg) || this.transferEnd(msg) || this.setName(msg) || this.modules(msg) || this.version(msg)
	}

	@autobind
	private transferBegin(msg: Message): boolean {
		if (!msg.text) return false
		if (!msg.includes(["引継", "引き継ぎ", "引越", "引っ越し"])) return false

		// メッセージのみ
		if (!msg.isDm) {
			msg.reply(serifs.core.transferNeedDm)
			return true
		}

		const code = msg.friend.generateTransferCode()

		msg.reply(serifs.core.transferCode(code))

		return true
	}

	@autobind
	private transferEnd(msg: Message): boolean {
		if (!msg.text) return false
		if (!msg.text.startsWith("「") || !msg.text.endsWith("」")) return false

		const code = msg.text.substring(1, msg.text.length - 1)

		const succ = msg.friend.transferMemory(code)

		if (succ) {
			msg.reply(serifs.core.transferDone(msg.friend.name))
		} else {
			msg.reply(serifs.core.transferFailed)
		}

		return true
	}

	@autobind
	private setName(msg: Message): boolean {
		if (!msg.text) return false
		if (!msg.text.includes("って呼んで")) return false
		if (msg.text.startsWith("って呼んで")) return false

		// メッセージのみ
		if (!msg.isDm) return true

		const name = msg.text.match(/^(.+?)って呼んで/)![1]

		if (name.length > 10) {
			msg.reply(serifs.core.tooLong)
			return true
		}

		if (!safeForInterpolate(name)) {
			msg.reply(serifs.core.invalidName)
			return true
		}

		const withSan = titles.some((t) => name.endsWith(t))

		if (withSan) {
			msg.friend.updateName(name)
			msg.reply(serifs.core.setNameOk(name))
		} else {
			msg.reply(serifs.core.san).then((reply) => {
				this.subscribeReply(msg.userId, msg.isDm, msg.isDm ? msg.userId : reply.id, {
					name: name,
				})
			})
		}

		return true
	}

	@autobind
	private modules(msg: Message): boolean {
		if (!msg.text) return false
		if (!msg.or(["modules"])) return false

		let text = "```\n"

		for (const m of this.nullcatChan.modules) {
			text += `${m.name}\n`
		}

		text += "```"

		msg.reply(text, {
			immediate: true,
		})

		return true
	}

	@autobind
	private version(msg: Message): boolean {
		if (!msg.text) return false
		if (!msg.or(["v", "version", "バージョン"])) return false

		msg.reply(`\`\`\`\nv${this.nullcatChan.version}\n\`\`\``, {
			immediate: true,
		})

		return true
	}

	@autobind
	private async contextHook(key: any, msg: Message, data: any) {
		if (msg.text == null) return

		const done = () => {
			msg.reply(serifs.core.setNameOk(msg.friend.name))
			this.unsubscribeReply(key)
		}

		if (msg.text.includes("うん")) {
			msg.friend.updateName(data.name + "ちゃん")
			done()
		} else if (msg.text.includes("いいえ")) {
			msg.friend.updateName(data.name)
			done()
		} else {
			msg.reply(serifs.core.yesOrNo).then((reply) => {
				this.subscribeReply(msg.userId, msg.isDm, reply.id, data)
			})
		}
	}
}