import sqlite from "better-sqlite3";

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

import { calculateFeeAmount, calculateTaxAmount } from "../functions.fee.js";

import { getFee } from "./getFee.js";

import { getLotOccupancy } from "./getLotOccupancy.js";

import type * as recordTypes from "../../types/recordTypes";

interface AddLotOccupancyFeeForm {
    lotOccupancyId: number | string;
    feeId: number | string;
    quantity: number | string;
    feeAmount?: number | string;
    taxAmount?: number | string;
}

export function addLotOccupancyFee(
    lotOccupancyFeeForm: AddLotOccupancyFeeForm,
    requestSession: recordTypes.PartialSession
): boolean {
    const database = sqlite(databasePath);

    const rightNowMillis = Date.now();

    // Calculate fee and tax (if not set)
    let feeAmount: number;
    let taxAmount: number;

    if (lotOccupancyFeeForm.feeAmount) {
        feeAmount =
            typeof lotOccupancyFeeForm.feeAmount === "string"
                ? Number.parseFloat(lotOccupancyFeeForm.feeAmount)
                : feeAmount;
        taxAmount =
            typeof lotOccupancyFeeForm.taxAmount === "string"
                ? Number.parseFloat(lotOccupancyFeeForm.taxAmount)
                : taxAmount;
    } else {
        const lotOccupancy = getLotOccupancy(lotOccupancyFeeForm.lotOccupancyId);
        const fee = getFee(lotOccupancyFeeForm.feeId);

        feeAmount = calculateFeeAmount(fee, lotOccupancy);
        taxAmount = calculateTaxAmount(fee, feeAmount);
    }

    // Check if record already exists
    const record: {
        feeAmount?: number;
        taxAmount?: number;
        recordDelete_timeMillis?: number;
    } = database
        .prepare(
            `select feeAmount, taxAmount, recordDelete_timeMillis
                from LotOccupancyFees
                where lotOccupancyId = ?
                and feeId = ?`
        )
        .get(lotOccupancyFeeForm.lotOccupancyId, lotOccupancyFeeForm.feeId);

    if (record) {
        if (record.recordDelete_timeMillis) {
            database
                .prepare(
                    `delete from LotOccupancyFees
                        where recordDelete_timeMillis is not null
                        and lotOccupancyId = ?
                        and feeId = ?`
                )
                .run(lotOccupancyFeeForm.lotOccupancyId, lotOccupancyFeeForm.feeId);
        } else if (record.feeAmount === feeAmount && record.taxAmount === taxAmount) {
            database
                .prepare(
                    `update LotOccupancyFees
                        set quantity = quantity + ?,
                        recordUpdate_userName = ?,
                        recordUpdate_timeMillis = ?
                        where lotOccupancyId = ?
                        and feeId = ?`
                )
                .run(
                    lotOccupancyFeeForm.quantity,
                    requestSession.user.userName,
                    rightNowMillis,
                    lotOccupancyFeeForm.lotOccupancyId,
                    lotOccupancyFeeForm.feeId
                );

            database.close();

            return true;
        } else {
            const quantity =
                typeof lotOccupancyFeeForm.quantity === "string"
                    ? Number.parseFloat(lotOccupancyFeeForm.quantity)
                    : lotOccupancyFeeForm.quantity;

            database
                .prepare(
                    `update LotOccupancyFees
                        set feeAmount = (feeAmount * quantity) + ?,
                        taxAmount = (taxAmount * quantity) + ?,
                        quantity = 1,
                        recordUpdate_userName = ?,
                        recordUpdate_timeMillis = ?
                        where lotOccupancyId = ?
                        and feeId = ?`
                )
                .run(
                    feeAmount * quantity,
                    taxAmount * quantity,
                    requestSession.user.userName,
                    rightNowMillis,
                    lotOccupancyFeeForm.lotOccupancyId,
                    lotOccupancyFeeForm.feeId
                );

            database.close();

            return true;
        }
    }

    // Create new record
    const result = database
        .prepare(
            `insert into LotOccupancyFees (
                lotOccupancyId, feeId,
                quantity, feeAmount, taxAmount,
                recordCreate_userName, recordCreate_timeMillis,
                recordUpdate_userName, recordUpdate_timeMillis)
                values (?, ?, ?, ?, ?, ?, ?, ?, ?)`
        )
        .run(
            lotOccupancyFeeForm.lotOccupancyId,
            lotOccupancyFeeForm.feeId,
            lotOccupancyFeeForm.quantity,
            feeAmount,
            taxAmount,
            requestSession.user.userName,
            rightNowMillis,
            requestSession.user.userName,
            rightNowMillis
        );

    database.close();

    return result.changes > 0;
}

export default addLotOccupancyFee;