ezbookkeeping/src/core/numeral.ts

import type { TypeAndName, TypeAndDisplayName } from '@/core/base.ts';

export interface NumberFormatOptions {
    readonly digitGrouping?: number;
    readonly digitGroupingSymbol?: string;
    readonly decimalNumberCount?: number;
    readonly decimalSeparator?: string;
    readonly trimTailZero?: boolean;
}

export interface NumeralSymbolType {
    readonly type: number;
    readonly name: string;
    readonly symbol: string;
}

export interface LocalizedNumeralSymbolType extends TypeAndDisplayName {
    readonly type: number;
    readonly symbol: string;
    readonly displayName: string;
}

export interface LocalizedDigitGroupingType extends TypeAndDisplayName {
    readonly type: number;
    readonly enabled: boolean;
    readonly displayName: string;
}

export class DecimalSeparator implements TypeAndName, NumeralSymbolType {
    private static readonly allInstances: DecimalSeparator[] = [];
    private static readonly allInstancesByType: Record<number, DecimalSeparator> = {};
    private static readonly allInstancesByTypeName: Record<string, DecimalSeparator> = {};

    public static readonly LanguageDefaultType: number = 0;
    public static readonly Dot = new DecimalSeparator(1, 'Dot', '.');
    public static readonly Comma = new DecimalSeparator(2, 'Comma', ',');

    public static readonly Default = DecimalSeparator.Dot;

    public readonly type: number;
    public readonly name: string;
    public readonly symbol: string;

    private constructor(type: number, name: string, symbol: string) {
        this.type = type;
        this.name = name;
        this.symbol = symbol;

        DecimalSeparator.allInstances.push(this);
        DecimalSeparator.allInstancesByType[type] = this;
        DecimalSeparator.allInstancesByTypeName[name] = this;
    }

    public static values(): DecimalSeparator[] {
        return DecimalSeparator.allInstances;
    }

    public static valueOf(type: number): DecimalSeparator | undefined {
        return DecimalSeparator.allInstancesByType[type];
    }

    public static parse(typeName: string): DecimalSeparator | undefined {
        return DecimalSeparator.allInstancesByTypeName[typeName];
    }
}

export class DigitGroupingSymbol implements TypeAndName, NumeralSymbolType {
    private static readonly allInstances: DigitGroupingSymbol[] = [];
    private static readonly allInstancesByType: Record<number, DigitGroupingSymbol> = {};
    private static readonly allInstancesByTypeName: Record<string, DigitGroupingSymbol> = {};

    public static readonly LanguageDefaultType: number = 0;
    public static readonly Dot = new DigitGroupingSymbol(1, 'Dot', '.');
    public static readonly Comma = new DigitGroupingSymbol(2, 'Comma', ',');
    public static readonly Space = new DigitGroupingSymbol(3, 'Space', ' ');
    public static readonly Apostrophe = new DigitGroupingSymbol(4, 'Apostrophe', '\'');

    public static readonly Default = DigitGroupingSymbol.Comma;

    public readonly type: number;
    public readonly name: string;
    public readonly symbol: string;

    private constructor(type: number, name: string, symbol: string) {
        this.type = type;
        this.name = name;
        this.symbol = symbol;

        DigitGroupingSymbol.allInstances.push(this);
        DigitGroupingSymbol.allInstancesByType[type] = this;
        DigitGroupingSymbol.allInstancesByTypeName[name] = this;
    }

    public static values(): DigitGroupingSymbol[] {
        return DigitGroupingSymbol.allInstances;
    }

    public static valueOf(type: number): DigitGroupingSymbol | undefined {
        return DigitGroupingSymbol.allInstancesByType[type];
    }

    public static parse(typeName: string): DigitGroupingSymbol | undefined {
        return DigitGroupingSymbol.allInstancesByTypeName[typeName];
    }
}

export class DigitGroupingType implements TypeAndName {
    private static readonly allInstances: DigitGroupingType[] = [];
    private static readonly allInstancesByType: Record<number, DigitGroupingType> = {};
    private static readonly allInstancesByTypeName: Record<string, DigitGroupingType> = {};

    public static readonly LanguageDefaultType: number = 0;
    public static readonly None = new DigitGroupingType(1, 'None', 'None', false);
    public static readonly ThousandsSeparator = new DigitGroupingType(2, 'ThousandsSeparator', 'Thousands Separator', true);

    public static readonly Default = DigitGroupingType.ThousandsSeparator;

    public readonly type: number;
    public readonly typeName: string;
    public readonly name: string;
    public readonly enabled: boolean;

    private constructor(type: number, typeName: string, name: string, enabled: boolean) {
        this.type = type;
        this.typeName = typeName;
        this.name = name;
        this.enabled = enabled;

        DigitGroupingType.allInstances.push(this);
        DigitGroupingType.allInstancesByType[type] = this;
        DigitGroupingType.allInstancesByTypeName[typeName] = this;
    }

    public static values(): DigitGroupingType[] {
        return DigitGroupingType.allInstances;
    }

    public static valueOf(type: number): DigitGroupingType | undefined {
        return DigitGroupingType.allInstancesByType[type];
    }

    public static parse(typeName: string): DigitGroupingType | undefined {
        return DigitGroupingType.allInstancesByTypeName[typeName];
    }
}

export class KnownAmountFormat {
    private static readonly allInstances: KnownAmountFormat[] = [];
    private static readonly allInstancesByType: Record<string, KnownAmountFormat> = {};

    public static readonly DotDecimalSeparator = new KnownAmountFormat('1234.56', DecimalSeparator.Dot, undefined, /^-?[0-9]+(\.[0-9]+)?$/);
    public static readonly CommaDecimalSeparator = new KnownAmountFormat('1234,56', DecimalSeparator.Comma, undefined, /^-?[0-9]+(,[0-9]+)?$/);
    public static readonly DotDecimalSeparatorWithCommaGroupingSymbol = new KnownAmountFormat('1,234.56', DecimalSeparator.Dot, DigitGroupingSymbol.Comma, /^-?([0-9]+,)*[0-9]+(\.[0-9]+)?$/);
    public static readonly CommaDecimalSeparatorWithDotGroupingSymbol = new KnownAmountFormat('1.234,56', DecimalSeparator.Comma, DigitGroupingSymbol.Dot, /^-?([0-9]+\.)*[0-9]+(,[0-9]+)?$/);
    public static readonly DotDecimalSeparatorWithSpaceGroupingSymbol = new KnownAmountFormat('1 234.56', DecimalSeparator.Dot, DigitGroupingSymbol.Space, /^-?([0-9]+ )*[0-9]+(\.[0-9]+)?$/);
    public static readonly CommaDecimalSeparatorWithSpaceGroupingSymbol = new KnownAmountFormat('1 234,56', DecimalSeparator.Comma, DigitGroupingSymbol.Space, /^-?([0-9]+ )*[0-9]+(,[0-9]+)?$/);
    public static readonly DotDecimalSeparatorWithApostropheGroupingSymbol = new KnownAmountFormat('1\'234.56', DecimalSeparator.Dot, DigitGroupingSymbol.Apostrophe, /^-?([0-9]+')*[0-9]+(\.[0-9]+)?$/);
    public static readonly CommaDecimalSeparatorWithApostropheGroupingSymbol = new KnownAmountFormat('1\'234,56', DecimalSeparator.Comma, DigitGroupingSymbol.Apostrophe, /^-?([0-9]+')*[0-9]+(,[0-9]+)?$/);

    public readonly format: string;
    public readonly decimalSeparator: DecimalSeparator;
    public readonly digitGroupingSymbol?: DigitGroupingSymbol;
    public readonly type: string;
    private readonly regex: RegExp;

    private constructor(format: string, decimalSeparator: DecimalSeparator, digitGroupingSymbol: DigitGroupingSymbol | undefined, regex: RegExp) {
        this.format = format;
        this.decimalSeparator = decimalSeparator;
        this.digitGroupingSymbol = digitGroupingSymbol;
        this.type = this.decimalSeparator.type + '-' + (this.digitGroupingSymbol ? this.digitGroupingSymbol.type : 0).toString();
        this.regex = regex;

        KnownAmountFormat.allInstances.push(this);
        KnownAmountFormat.allInstancesByType[this.type] = this;
    }

    public isValid(amount: string): boolean {
        return this.regex.test(amount);
    }

    public static values(): KnownAmountFormat[] {
        return KnownAmountFormat.allInstances;
    }

    public static valueOf(type: string): KnownAmountFormat | undefined {
        return KnownAmountFormat.allInstancesByType[type];
    }

    public static detect(amount: string): KnownAmountFormat[] | undefined {
        const result: KnownAmountFormat[] = [];

        for (const format of KnownAmountFormat.allInstances) {
            if (format.isValid(amount)) {
                result.push(format);
            }
        }

        return result.length > 0 ? result : undefined;
    }

    public static detectMulti(amounts: string[]): KnownAmountFormat[] | undefined {
        const detectedCounts: Record<string, number> = {};

        for (const amount of amounts) {
            const detectedFormats = KnownAmountFormat.detect(amount);

            if (detectedFormats) {
                for (const format of detectedFormats) {
                    detectedCounts[format.type] = (detectedCounts[format.type] || 0) + 1;
                }
            } else {
                return undefined;
            }
        }

        const result: KnownAmountFormat[] = [];

        for (const format of KnownAmountFormat.allInstances) {
            if (detectedCounts[format.type] === amounts.length) {
                result.push(format);
            }
        }

        return result.length > 0 ? result : undefined;
    }
}

export class AmountFilterType {
    private static readonly allInstances: AmountFilterType[] = [];
    private static readonly allInstancesByType: Record<string, AmountFilterType> = {};

    public static readonly GreaterThan = new AmountFilterType('gt', 'Greater than', 1);
    public static readonly LessThan = new AmountFilterType('lt', 'Less than', 1);
    public static readonly EqualTo = new AmountFilterType('eq', 'Equal to', 1);
    public static readonly NotEqualTo = new AmountFilterType('ne', 'Not equal to', 1);
    public static readonly Between = new AmountFilterType('bt', 'Between', 2);
    public static readonly NotBetween = new AmountFilterType('nb', 'Not between', 2);

    public readonly type: string;
    public readonly name: string;
    public readonly paramCount: number;

    private constructor(type: string, name: string, paramCount: number) {
        this.type = type;
        this.name = name;
        this.paramCount = paramCount;

        AmountFilterType.allInstances.push(this);
        AmountFilterType.allInstancesByType[type] = this;
    }

    public static values(): AmountFilterType[] {
        return AmountFilterType.allInstances;
    }

    public static valueOf(type: string): AmountFilterType | undefined {
        return AmountFilterType.allInstancesByType[type];
    }
}