import { Notes } from "@/models/index.js";
import define from "@/server/api/define.js";
import { getNote } from "@/server/api/common/getters.js";
import { ApiError } from "@/server/api/error.js";
import { generateVisibilityQuery } from "@/server/api/common/generate-visibility-query.js";
import { generateMutedUserQuery } from "@/server/api/common/generate-muted-user-query.js";
import { makePaginationQuery } from "@/server/api/common/make-pagination-query.js";
import { generateBlockedUserQuery } from "@/server/api/common/generate-block-query.js";

export const meta = {
	tags: ["notes"],

	requireCredential: false,
	requireCredentialPrivateMode: true,

	res: {
		type: "array",
		optional: false,
		nullable: false,
		items: {
			type: "object",
			optional: false,
			nullable: false,
			ref: "Note",
		},
	},

	errors: {
		noSuchNote: {
			message: "No such note.",
			code: "NO_SUCH_NOTE",
			id: "12908022-2e21-46cd-ba6a-3edaf6093f46",
		},
	},
} as const;

export const paramDef = {
	type: "object",
	properties: {
		noteId: { type: "string", format: "misskey:id" },
		userId: { type: "string", format: "misskey:id" },
		limit: { type: "integer", minimum: 1, maximum: 100, default: 10 },
		sinceId: { type: "string", format: "misskey:id" },
		untilId: { type: "string", format: "misskey:id" },
		filter: {
			type: "string",
			enum: ["all", "renote", "quote"],
			nullable: true,
			default: null,
		},
	},
	required: ["noteId"],
} as const;

export default define(meta, paramDef, async (ps, user) => {
	const note = await getNote(ps.noteId, user).catch((err) => {
		if (err.id === "9725d0ce-ba28-4dde-95a7-2cbb2c15de24")
			throw new ApiError(meta.errors.noSuchNote);
		throw err;
	});

	const query = makePaginationQuery(
		Notes.createQueryBuilder("note"),
		ps.sinceId,
		ps.untilId,
	)
		.andWhere("note.renoteId = :renoteId", { renoteId: note.id })
		.innerJoinAndSelect("note.user", "user");

	// "all" doesn't filter out anything, it's just there for
	// those who prefer to set the parameter explicitly

	if (ps.filter === "renote") {
		query.andWhere("note.text IS NULL");
	}
	if (ps.filter === "quote") {
		query.andWhere("note.text IS NOT NULL");
	}

	if (ps.userId) {
		query.andWhere("user.id = :userId", { userId: ps.userId });
	}

	query
		.leftJoinAndSelect("user.avatar", "avatar")
		.leftJoinAndSelect("user.banner", "banner")
		.leftJoinAndSelect("note.reply", "reply")
		.leftJoinAndSelect("note.renote", "renote")
		.leftJoinAndSelect("reply.user", "replyUser")
		.leftJoinAndSelect("replyUser.avatar", "replyUserAvatar")
		.leftJoinAndSelect("replyUser.banner", "replyUserBanner")
		.leftJoinAndSelect("renote.user", "renoteUser")
		.leftJoinAndSelect("renoteUser.avatar", "renoteUserAvatar")
		.leftJoinAndSelect("renoteUser.banner", "renoteUserBanner");

	generateVisibilityQuery(query, user);
	if (user) generateMutedUserQuery(query, user);
	if (user) generateBlockedUserQuery(query, user);

	// We fetch more than requested because some may be filtered out, and if there's less than
	// requested, the pagination stops.
	const found = [];
	const take = Math.floor(ps.limit * 1.5);
	let skip = 0;
	while (found.length < ps.limit) {
		const notes = await query.take(take).skip(skip).getMany();
		found.push(...(await Notes.packMany(notes, user)));
		skip += take;
		if (notes.length < take) break;
	}

	if (found.length > ps.limit) {
		found.length = ps.limit;
	}

	return found;
});