import sqlite from "better-sqlite3";

import { lotOccupancyDB as databasePath } from "../../data/databasePaths.js";

import { clearCacheByTableName } from "../functions.cache.js";
import { updateRecordOrderNumber } from "./updateRecordOrderNumber.js";

function getCurrentField(
    lotTypeFieldId: number | string,
    connectedDatabase: sqlite.Database
): { lotTypeId?: number; orderNumber: number } {
    const currentField: { lotTypeId?: number; orderNumber: number } = connectedDatabase
        .prepare("select lotTypeId, orderNumber from LotTypeFields where lotTypeFieldId = ?")
        .get(lotTypeFieldId);

    return currentField;
}

export function moveLotTypeFieldDown(lotTypeFieldId: number | string): boolean {
    const database = sqlite(databasePath);

    const currentField = getCurrentField(lotTypeFieldId, database);

    database
        .prepare(
            `update LotTypeFields
                set orderNumber = orderNumber - 1
                where recordDelete_timeMillis is null
                and lotTypeId = ? and orderNumber = ? + 1`
        )
        .run(currentField.lotTypeId, currentField.orderNumber);

    const success = updateRecordOrderNumber(
        "LotTypeFields",
        lotTypeFieldId,
        currentField.orderNumber + 1,
        database
    );

    database.close();

    clearCacheByTableName("LotTypeFields");

    return success;
}

export function moveLotTypeFieldDownToBottom(lotTypeFieldId: number | string): boolean {
    const database = sqlite(databasePath);

    const currentField = getCurrentField(lotTypeFieldId, database);

    const maxOrderNumber: number = database
        .prepare(
            `select max(orderNumber) as maxOrderNumber
                from LotTypeFields
                where recordDelete_timeMillis is null
                and lotTypeId = ?`
        )
        .get(currentField.lotTypeId).maxOrderNumber;

    if (currentField.orderNumber !== maxOrderNumber) {
        updateRecordOrderNumber("LotTypeFields", lotTypeFieldId, maxOrderNumber + 1, database);

        database
            .prepare(
                `update LotTypeFields
                    set orderNumber = orderNumber - 1
                    where recordDelete_timeMillis is null
                    and lotTypeId = ?
                    and orderNumber > ?`
            )
            .run(currentField.lotTypeId, currentField.orderNumber);
    }

    database.close();

    clearCacheByTableName("LotTypeFields");

    return true;
}

export function moveLotTypeFieldUp(lotTypeFieldId: number | string): boolean {
    const database = sqlite(databasePath);

    const currentField = getCurrentField(lotTypeFieldId, database);

    if (currentField.orderNumber <= 0) {
        database.close();
        return true;
    }

    database
        .prepare(
            `update LotTypeFields
                set orderNumber = orderNumber + 1
                where recordDelete_timeMillis is null
                and lotTypeId = ?
                and orderNumber = ? - 1`
        )
        .run(currentField.lotTypeId, currentField.orderNumber);

    const success = updateRecordOrderNumber(
        "LotTypeFields",
        lotTypeFieldId,
        currentField.orderNumber - 1,
        database
    );

    database.close();

    clearCacheByTableName("LotTypeFields");

    return success;
}

export function moveLotTypeFieldUpToTop(lotTypeFieldId: number | string): boolean {
    const database = sqlite(databasePath);

    const currentField = getCurrentField(lotTypeFieldId, database);

    if (currentField.orderNumber > 0) {
        updateRecordOrderNumber("LotTypeFields", lotTypeFieldId, -1, database);

        database
            .prepare(
                `update LotTypeFields
                    set orderNumber = orderNumber + 1
                    where recordDelete_timeMillis is null
                    and lotTypeId = ?
                    and orderNumber < ?`
            )
            .run(currentField.lotTypeId, currentField.orderNumber);
    }

    database.close();

    clearCacheByTableName("LotTypeFields");

    return true;
}