import { Claims } from './claims';
import { sql } from 'bun';
import { first } from 'lodash';
import { BadRequestError, NotFoundError, UnauthorizedError } from '../utilities/errors';
import { CreateCircleRequest, UpdateCircleRequest } from '../utilities/requestModels';
import { memo } from '../utilities/helpers';
import { CircleId, PlayerId, UserId } from '../utilities/secureIds';
import { orm } from './orm';
import { User } from './user';

export class Circle {
    id: CircleId;
    owningUserId: UserId;
    name: string;
    isPublic: boolean;
    imagePath?: string;
    colour?: string;

    constructor({
        id,
        owningUserId,
        name,
        isPublic,
        imagePath,
        colour,
    }: {
        id: CircleId;
        owningUserId: UserId;
        name: string;
        isPublic: boolean;
        imagePath?: string;
        colour?: string;
    }) {
        this.id = id;
        this.owningUserId = owningUserId;
        this.name = name;
        this.isPublic = isPublic;
        this.imagePath = imagePath;
        this.colour = colour;
    }
}

export class CircleOrm {
    async create(model: CreateCircleRequest, claims?: Claims): Promise<Circle> {
        if (model.isPublic && claims && !claims.test(Claims.ADMIN, Claims.CIRCLES.PUBLIC.CREATE)) {
            throw new UnauthorizedError();
        }

        await sql`INSERT INTO circles (owning_user_id, name, is_public, colour)
                  VALUES (${claims?.userId.raw},
                          ${model.name},
                          ${model.isPublic},
                          ${model.colour})`;
        const newRecordId: string = (first(await sql`SELECT lastval();`) as any)?.lastval as string;

        return await this.get(CircleId.fromID(newRecordId));
    }

    async get(id: CircleId, claims?: Claims): Promise<Circle> {
        const record: any = first(
            await sql`SELECT *
                      FROM circles
                      WHERE id = ${id.raw}
                      LIMIT 1`,
        );

        if (!record) {
            throw new NotFoundError('No matching game exists');
        }

        let user: User;
        if (
            claims &&
            !claims.test(Claims.ADMIN) &&
            !(claims.test(Claims.CIRCLES.PUBLIC.READ) && record.is_public) &&
            !(claims.test(Claims.CIRCLES.OWNED.READ) && record.owning_user_id === claims.userId.raw) &&
            !(
                claims.test(Claims.CIRCLES.PRIVATE.READ_IF_MEMBER) &&
                (user = await orm.users.get(claims.userId)) &&
                (await sql`SELECT * FROM player_circles WHERE circle_id = ${id.raw}`).some(
                    (x: { player_id: string }) => x.player_id === user.playerId.raw,
                )
            )
        ) {
            throw new UnauthorizedError();
        }

        return new Circle({
            id: CircleId.fromID(record.id),
            owningUserId: UserId.fromID(record.owning_user_id),
            name: record.name,
            isPublic: record.is_public,
            imagePath: record.image_path,
            colour: record.colour,
        });
    }

    async update(id: CircleId, patch: UpdateCircleRequest): Promise<Circle> {
        const circle = await this.get(id);
        circle.name = patch.name ?? circle.name;
        circle.colour = patch.colour ?? circle.colour;
        circle.imagePath = patch.imagePath ?? circle.imagePath;

        await sql`UPDATE circles
                  SET name=${circle.name},
                      colour=${circle.colour},
                      image_path=${circle.imagePath}
                  WHERE id = ${id.raw}`;

        return await this.get(id);
    }

    async drop(id: CircleId): Promise<void> {
        // Ensure record exists before attempting to delete
        await this.get(id);
        await sql.transaction(async (tx) => {
            await tx`DELETE
                     FROM player_circles
                     WHERE circle_id = ${id.raw}`;
            await tx`DELETE
                     FROM circle_invites
                     WHERE circle_id = ${id.raw}`;
            await tx`DELETE
                     FROM circle_comments
                     WHERE circle_id = ${id.raw}`;
            await tx`DELETE
                     FROM circles
                     WHERE id = ${id.raw}`;
        });

        return;
    }

    async invite(
        circleId: CircleId,
        relatedRecord: PlayerId | UserId | string | undefined,
        claims: Claims,
    ): Promise<void> {
        if (relatedRecord === undefined) {
            throw new BadRequestError();
        }

        const circle = await this.get(circleId, claims);
        if (
            claims &&
            ((circle.isPublic && !claims.test(Claims.CIRCLES.PUBLIC.USERS.INVITE)) ||
                (!circle.isPublic &&
                    !(claims.test(Claims.CIRCLES.OWNED.USERS.INVITE) && circle.owningUserId === claims.userId)))
        ) {
            throw new UnauthorizedError();
        }

        let invitedUserId: UserId | undefined;
        if (relatedRecord instanceof UserId) {
            invitedUserId = relatedRecord;
        } else if (relatedRecord instanceof PlayerId) {
            invitedUserId = (await orm.users.getByPlayer(relatedRecord))?.id;
        } else {
            invitedUserId = (await orm.users.getByEmail(relatedRecord))?.id;
        }

        if (!invitedUserId) {
            throw new BadRequestError();
        }
        await sql`INSERT INTO circle_invites(invited_user_id, invited_by_user_id, circle_id)
                  VALUES (${invitedUserId.raw}, ${claims.userId.raw}, ${circleId.raw})`;
    }

    query: (query: string) => Promise<Circle[]> = memo<(query: string) => Promise<Circle[]>, Circle[]>(this.#query);
    async #query(query: string): Promise<Circle[]> {
        const queryResult: any = await sql` SELECT
                           id, name, owning_user_id, is_public
                       FROM (SELECT *, SIMILARITY(${query}, name) as similarity FROM circles WHERE is_public=true)
                       WHERE similarity > 0
                       ORDER BY similarity
                       LIMIT 5;`;

        if (!queryResult) {
            throw new NotFoundError('No matching circles exists');
        }

        return queryResult.map(
            (x: { id: string; name: string; owning_user_id: string; is_public: boolean }) =>
                new Circle({
                    id: CircleId.fromID(x.id),
                    name: x.name,
                    isPublic: x.is_public,
                    owningUserId: UserId.fromID(x.owning_user_id),
                }),
        );
    }
}