import config from "@/config/index.js";
import type { PopulatedEmoji } from "@/misc/populate-emojis.js";
import type { Note } from "@/models/entities/note.js";
import type { NoteReaction } from "@/models/entities/note-reaction.js";
import { Client, types } from "cassandra-driver";
import { noteVisibilities } from "@/types.js";

function newClient(): Client | null {
	if (!config.scylla) {
		return null;
	}

	return new Client({
		contactPoints: config.scylla.nodes,
		localDataCenter: config.scylla.localDataCentre,
		keyspace: config.scylla.keyspace,
	});
}

export const scyllaClient = newClient();

export const prepared = {
	note: {
		insert: `INSERT INTO note (
				"createdAtDate",
				"createdAt",
				"id",
				"visibility",
				"content",
				"name",
				"cw",
				"localOnly",
				"renoteCount",
				"repliesCount",
				"uri",
				"url",
				"score",
				"files",
				"visibleUserIds",
				"mentions",
				"emojis",
				"tags",
				"hasPoll",
				"threadId",
				"channelId",
				"channelName",
				"userId",
				"replyId",
				"renoteId",
				"reactions",
				"noteEdit",
				"updatedAt"
			)
			VALUES
			(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
		select: {
			byDate: `SELECT * FROM note WHERE "createdAtDate" IN ?`,
			byId: `SELECT * FROM note WHERE "id" IN ?`,
			byUri: `SELECT * FROM note WHERE "uri" IN ?`,
			byUrl: `SELECT * FROM note WHERE "url" IN ?`,
			byUserId: `SELECT * FROM note_by_userid WHERE "userId" IN ?`,
		},
		delete: `DELETE FROM note WHERE "createdAtDate" = ? AND "createdAt" = ? AND "id" = ?`,
		update: {
			renoteCount: `UPDATE note SET
				"renoteCount" = ?,
				"score" = ?
				WHERE "createdAtDate" = ? AND "createdAt" = ? AND "id" = ? IF EXISTS`,
			reactions: `UPDATE note SET
				"emojis" = ?,
				"reactions" = ?,
				"score" = ?
				WHERE "createdAtDate" = ? AND "createdAt" = ? AND "id" = ? IF EXISTS`,
		},
	},
	reaction: {
		insert: `INSERT INTO reaction
			("id", "noteId", "userId", "reaction", "emoji", "createdAt")
			VALUES (?, ?, ?, ?, ?, ?)`,
		select: {
			byNoteId: `SELECT * FROM reaction WHERE "noteId" IN ?`,
			byUserId: `SELECT * FROM reaction_by_userid WHERE "userId" IN ?`,
			byNoteAndUser: `SELECT * FROM reaction WHERE "noteId" = ? AND "userId" = ?`,
			byId: `SELECT * FROM reaction WHERE "id" IN ?`,
		},
		delete: `DELETE FROM reaction WHERE "noteId" = ? AND "userId" = ?`,
	},
};

export interface ScyllaDriveFile {
	id: string;
	type: string;
	createdAt: Date;
	name: string;
	comment: string | null;
	blurhash: string | null;
	url: string;
	thumbnailUrl: string;
	isSensitive: boolean;
	isLink: boolean;
	md5: string;
	size: number;
}

export interface ScyllaNoteEditHistory {
	content: string;
	cw: string;
	files: ScyllaDriveFile[];
	updatedAt: Date;
}

export type ScyllaNote = Note & {
	createdAtDate: Date;
	createdAt: Note["createdAt"];
	id: Note["id"];
	visibility: Note["visibility"];
	text: Note["text"];
	name: Note["name"];
	cw: Note["cw"];
	localOnly: Note["localOnly"];
	renoteCount: Note["renoteCount"];
	repliesCount: Note["repliesCount"];
	uri: Note["uri"];
	url: Note["url"];
	score: Note["score"];
	files: ScyllaDriveFile[];
	fileIds: Note["fileIds"];
	attachedFileTypes: Note["attachedFileTypes"];
	visibleUserIds: Note["visibleUserIds"];
	mentions: Note["mentions"];
	emojis: Note["emojis"];
	tags: Note["tags"];
	hasPoll: Note["hasPoll"];
	threadId: Note["threadId"];
	channelId: Note["channelId"];
	channelName: string;
	userId: Note["userId"];
	replyId: Note["replyId"];
	renoteId: Note["renoteId"];
	reactions: Note["reactions"];
	noteEdit: ScyllaNoteEditHistory[];
	updatedAt: Note["updatedAt"];
};

export function parseScyllaNote(row: types.Row): ScyllaNote {
	const files: ScyllaDriveFile[] = row.get("files");
	return {
		createdAtDate: row.get("createdAtDate"),
		createdAt: row.get("createdAt"),
		id: row.get("id"),
		visibility: row.get("visibility"),
		text: row.get("content"),
		name: row.get("name"),
		cw: row.get("cw"),
		localOnly: row.get("localOnly"),
		renoteCount: row.get("renoteCount"),
		repliesCount: row.get("repliesCount"),
		uri: row.get("uri"),
		url: row.get("url"),
		score: row.get("score"),
		files,
		fileIds: files.map((file) => file.id),
		attachedFileTypes: files.map((file) => file.type),
		visibleUserIds: row.get("visibleUserIds"),
		mentions: row.get("mentions"),
		emojis: row.get("emojis"),
		tags: row.get("tags"),
		hasPoll: row.get("hasPoll"),
		threadId: row.get("threadId"),
		channelId: row.get("channelId"),
		channelName: row.get("channelName"),
		userId: row.get("userId"),
		replyId: row.get("replyId"),
		renoteId: row.get("replyId"),
		reactions: row.get("reactions"),
		noteEdit: row.get("noteEdit"),
		updatedAt: row.get("updatedAt"),
		/* unused postgres denormalization */
		channel: null,
		renote: null,
		reply: null,
		renoteUserHost: null,
		renoteUserId: null,
		mentionedRemoteUsers: "",
		replyUserHost: null,
		replyUserId: null,
		user: null,
		userHost: null,
	};
}

export interface ScyllaNoteReaction extends NoteReaction {
	emoji: PopulatedEmoji;
}

export function parseScyllaReaction(row: types.Row): ScyllaNoteReaction {
	return {
		id: row.get("id"),
		noteId: row.get("noteId"),
		userId: row.get("userId"),
		reaction: row.get("reaction"),
		createdAt: row.get("createdAt"),
		emoji: row.get("emoji"),
	};
}