import { validateSync } from 'class-validator';
import { IsConfirmationTiers } from './isConfirmationTiers';

class TestDto {
    @IsConfirmationTiers()
    CONFIRMATION_TIERS: string;
}

const validateTiers = (value: string) => {
    const dto = Object.assign(new TestDto(), { CONFIRMATION_TIERS: value });

    return validateSync(dto);
};

const validTiers =
    '[{"upToTotalFiat":"25","minConfirmations":1},{"upToTotalFiat":"250","minConfirmations":5},{"minConfirmations":10}]';

describe('IsConfirmationTiers', () => {
    it('accepts valid default tiers', () => {
        expect(validateTiers(validTiers)).toHaveLength(0);
    });

    it('rejects empty string', () => {
        expect(validateTiers('').length).toBeGreaterThan(0);
    });

    it('rejects invalid JSON', () => {
        expect(validateTiers('not-json').length).toBeGreaterThan(0);
    });

    it('rejects empty array', () => {
        expect(validateTiers('[]').length).toBeGreaterThan(0);
    });

    it('rejects minConfirmations: 0', () => {
        const tiers =
            '[{"upToTotalFiat":"25","minConfirmations":0},{"upToTotalFiat":"250","minConfirmations":5},{"minConfirmations":10}]';

        expect(validateTiers(tiers).length).toBeGreaterThan(0);
    });

    it('rejects non-numeric minConfirmations', () => {
        const tiers =
            '[{"upToTotalFiat":"25","minConfirmations":"foo"},{"upToTotalFiat":"250","minConfirmations":5},{"minConfirmations":10}]';

        expect(validateTiers(tiers).length).toBeGreaterThan(0);
    });

    it('rejects missing upToTotalFiat on non-final tier', () => {
        const tiers = '[{"minConfirmations":1},{"upToTotalFiat":"250","minConfirmations":5},{"minConfirmations":10}]';

        expect(validateTiers(tiers).length).toBeGreaterThan(0);
    });

    it('rejects non-positive upToTotalFiat on non-final tier', () => {
        const tiers = '[{"upToTotalFiat":"0","minConfirmations":1},{"minConfirmations":10}]';

        expect(validateTiers(tiers).length).toBeGreaterThan(0);
    });

    it('rejects negative minConfirmations', () => {
        const tiers = '[{"upToTotalFiat":"25","minConfirmations":-1},{"minConfirmations":10}]';

        expect(validateTiers(tiers).length).toBeGreaterThan(0);
    });

    it('rejects catch-all tier with upToTotalFiat', () => {
        const tiers = '[{"upToTotalFiat":"25","minConfirmations":1},{"upToTotalFiat":"999","minConfirmations":10}]';

        expect(validateTiers(tiers).length).toBeGreaterThan(0);
    });
});