import { beforeEach, describe, expect, jest, test } from '@jest/globals';
import { Translator } from '../src/translator.js';
import type { NullPronounsConfig } from '../locale/config.ts';

const translations = {
    pronouns: {
        slashes: {
            plural: 'plural',
            pluralHonorific: 'plural-honorific',
            description: 'description',
        },
    },
};
const translator = new Translator(translations, translations, []);

// workaround to be independent of the current selected locale
jest.unstable_mockModule('../data/pronouns/morphemes.js', () => {
    return {
        default: ['pronoun_subject', 'pronoun_object', 'possessive_determiner', 'possessive_pronoun', 'reflexive'],
    };
});

const { Pronoun } = await import('../src/classes.ts');
const { buildPronoun } = await import('../src/buildPronoun.ts');
const { default: pronouns, generated: generatedPronouns } = await import('./fixtures/pronouns.ts');

beforeEach(() => {
    global.config.pronouns = {
        enabled: true,
        route: 'pronouns',
        default: 'he',
        any: 'any',
        plurals: true,
        honorifics: false,
        multiple: {
            name: 'Interchangeable forms',
            description: '…',
            examples: ['he&she'],
        },
        null: false,
        emoji: false,
    };
});

test('finds pronouns by canonical name', () => {
    const actual = expect(buildPronoun(pronouns, 'they', translator));
    actual.toBeDefined();
    actual.toBe(pronouns.they);
});

test('finds pronouns by alias', () => {
    const actual = expect(buildPronoun(pronouns, 'they/them', translator));
    actual.toBeDefined();
    actual.toBe(pronouns.they);
});

describe('when configured that emojiself pronouns are available', () => {
    beforeEach(() => {
        global.config.pronouns.emoji = {
            description: 'Emojiself pronouns',
            history: 'Emojiself pronouns are intended for online communication and not supposed to be pronounced',
            morphemes: {
                pronoun_subject: '#',
                pronoun_object: '#',
                possessive_determiner: '#\'s',
                possessive_pronoun: '#\'s',
                reflexive: '#self',
            },
            examples: ['💫', '💙'],
            template: '…',
        };
    });

    test('builds pronouns from emoji', () => {
        const actual = expect(buildPronoun(pronouns, '💙', translator));
        actual.toBeDefined();
        actual.toEqual(new Pronoun(
            '💙',
            'Emojiself pronouns',
            false,
            {
                pronoun_subject: '💙',
                pronoun_object: '💙',
                possessive_determiner: '💙\'s',
                possessive_pronoun: '💙\'s',
                reflexive: '💙self',
            },
            [false],
            [false],
            [],
            'Emojiself pronouns are intended for online communication and not supposed to be pronounced@__generator__',
            false,
        ));
    });
});

describe('when configured that null pronouns are available', () => {
    const nullPronounsConfig: NullPronounsConfig = {
        description: 'Avoiding gendered forms',
        history: 'Some people prefer not using any pronouns',
        morphemes: {
            pronoun_subject: '#',
            pronoun_object: '#',
            possessive_determiner: '#\'s',
            possessive_pronoun: '#\'s',
            reflexive: '#self',
        },
        examples: [':S'],
        template: '…',
    };

    beforeEach(() => {
        global.config.pronouns.null = nullPronounsConfig;
    });

    test('builds pronouns from name', () => {
        const actual = expect(buildPronoun(pronouns, ':S', translator));
        actual.toBeDefined();
        actual.toEqual(new Pronoun(
            'S',
            'Avoiding gendered forms',
            false,
            {
                pronoun_subject: 'S',
                pronoun_object: 'S',
                possessive_determiner: 'S\'s',
                possessive_pronoun: 'S\'s',
                reflexive: 'Sself',
            },
            [false],
            [false],
            [],
            'Some people prefer not using any pronouns@__generator__',
            false,
        ));
    });
    test('builds nothing if name too long', () => {
        expect(buildPronoun(pronouns, ':Abcdefghijklmnopqrstuvwxyz', translator)).toBeNull();
    });

    describe('with conditional placeholders', () => {
        beforeEach(() => {
            nullPronounsConfig.morphemes!.possessive_pronoun = '#/[sxzß]$/i#’|#s';
        });

        test.each(['S', 'Ringelnatz', 'Max', 'X'])('builds morpheme conditionally if name matches', (name) => {
            expect(buildPronoun(pronouns, `:${name}`, translator)!.morphemes.possessive_pronoun).toBe(`${name}’`);
        });
        test.each(['Sofi', 'Xavier'])('builds morpheme by default if name does not match', (name) => {
            expect(buildPronoun(pronouns, `:${name}`, translator)!.morphemes.possessive_pronoun).toBe(`${name}s`);
        });
    });

    describe('when some morphemes are not defined in template', () => {
        beforeEach(() => {
            nullPronounsConfig.morphemes = {
                pronoun_subject: '#',
                pronoun_object: '#',
                possessive_determiner: '#\'s',
                possessive_pronoun: '#\'s',
            };
        });
        test('they become null', () => {
            const actual = expect(buildPronoun(pronouns, ':S', translator));
            actual.toBeDefined();
            actual.toEqual(new Pronoun(
                'S',
                'Avoiding gendered forms',
                false,
                {
                    pronoun_subject: 'S',
                    pronoun_object: 'S',
                    possessive_determiner: 'S\'s',
                    possessive_pronoun: 'S\'s',
                    reflexive: null,
                },
                [false],
                [false],
                [],
                'Some people prefer not using any pronouns@__generator__',
                false,
            ));
        });
    });
});

describe('when configured that slashes contain all morphemes', () => {
    beforeEach(() => {
        global.config.pronouns.honorifics = true;
        global.config.pronouns.slashes = true;
    });

    test('builds generated pronoun from all morphemes', () => {
        const actual = expect(buildPronoun(pronouns, 'ae/aer/aer/aers/aerself', translator));
        actual.toBeDefined();
        actual.toEqual(generatedPronouns.aer);
    });
    test('unescapes morphemes', () => {
        const actual = expect(buildPronoun(pronouns, 's`/he/hir/hir/hirs/hirself', translator));
        actual.toBeDefined();
        actual.toEqual(generatedPronouns.sSlashHe);
    });
    test('builds generated pronoun from all required morphemes and plural modifier', () => {
        const actual = expect(buildPronoun(pronouns, 'ae/aer/aer/aers/aerselves/:plural', translator));
        actual.toBeDefined();
        actual.toEqual(generatedPronouns.aerPlural);
    });
    test('builds generated pronoun from all required morphemes and plural honorific modifier', () => {
        const actual = expect(buildPronoun(pronouns, 'ae/aer/aer/aers/aerselves/:plural-honorific', translator));
        actual.toBeDefined();
        actual.toEqual(generatedPronouns.aerPluralHonorific);
    });
    test('builds generated pronoun from all required morphemes and description', () => {
        const actual = expect(buildPronoun(
            pronouns,
            'ae/aer/aer/aers/aerself/:description=Neopronoun “ae” `/ “æ”',
            translator,
        ));
        actual.toBeDefined();
        actual.toEqual(generatedPronouns.aerWithDescription);
    });
    test('builds generated pronoun from all required morphemes and modifiers', () => {
        const actual = expect(buildPronoun(
            pronouns,
            'ae/aer/:description=Neopronoun “ae” `/ “æ”/:plural/aer/aers/aerselves',
            translator,
        ));
        actual.toBeDefined();
        actual.toEqual(generatedPronouns.aerPluralWithDescription);
    });
    test('builds generated pronoun with some morphemes empty', () => {
        const actual = expect(buildPronoun(pronouns, 'ae/aer/aer/ /aerself', translator));
        actual.toBeDefined();
        actual.toEqual(generatedPronouns.aerWithEmptyPossessivePronoun);
    });
    test('builds generated pronoun with morpheme at end empty', () => {
        const actual = expect(buildPronoun(pronouns, 'ae/aer/aer/aers/', translator));
        actual.toBeDefined();
        actual.toEqual(generatedPronouns.aerWithEmptyReflexive);
    });
    test('builds generated pronoun with some morphemes unset', () => {
        const actual = expect(buildPronoun(pronouns, 'ae/aer/aer/~/aerself', translator));
        actual.toBeDefined();
        actual.toEqual(generatedPronouns.aerWithUnsetPossessivePronoun);
    });
    test('builds nothing if morphemes are missing', () => {
        expect(buildPronoun(pronouns, 'ae/aer/aer/aerself', translator)).toBeNull();
    });
    test('builds nothing if too many morphemes are given', () => {
        expect(buildPronoun(pronouns, 'ae/aer/aer/aers/aerself/aer', translator)).toBeNull();
    });
    test('builds nothing if description too long', () => {
        expect(buildPronoun(
            pronouns,
            'ae/aer/aer/aers/aerself/:description=Neopronoun “ae” `/ “æ” which is my favorite so you should use it too',
            translator,
        )).toBeNull();
    });
});
describe('when configured that slashes contain some morphemes', () => {
    beforeEach(() => {
        global.config.pronouns.slashes = ['pronoun_subject', 'pronoun_object', 'possessive_determiner', 'reflexive'];
    });

    test('builds generated pronoun from all required morphemes', () => {
        const actual = expect(buildPronoun(pronouns, 'ae/aer/aer/aerself', translator));
        actual.toBeDefined();
        actual.toEqual(generatedPronouns.aerWithUnsetPossessivePronoun);
    });
    test('builds nothing if morphemes are missing', () => {
        expect(buildPronoun(pronouns, 'ae/aer/aer', translator)).toBeNull();
    });
    test('builds nothing if too many morphemes are given', () => {
        expect(buildPronoun(pronouns, 'ae/aer/aer/aers/aerself', translator)).toBeNull();
    });
});
describe('when configured that slashes cannot contain morphemes', () => {
    beforeEach(() => {
        global.config.pronouns.slashes = false;
    });

    const pathBase = 'ae/aer/aer/aers/aerself/aer';

    test.each([3, 4, 5, 6])('builds nothing if %d morphemes are given', (count) => {
        const path = pathBase.split('/').slice(0, count)
            .join('/');
        expect(buildPronoun(pronouns, path.slice(0, count), translator)).toBeUndefined();
    });
});

describe('building generated pronouns from commas', () => {
    test('succeeds with all parts present', () => {
        const actual = expect(buildPronoun(pronouns, 'ae,aer,aer,aers,aerself,0,', translator));
        actual.toBeDefined();
        actual.toEqual(generatedPronouns.aer);
    });
    test('succeeds with description missing present', () => {
        const actual = expect(buildPronoun(pronouns, 'ae,aer,aer,aers,aerself,0', translator));
        actual.toBeDefined();
        actual.toEqual(generatedPronouns.aer);
    });
    test('succeeds with base pronoun and some custom morphemes', () => {
        const actual = expect(buildPronoun(pronouns, 'they,!2,aers,!2,', translator));
        actual.toBeDefined();
        actual.toEqual(new Pronoun(
            'they/them',
            '',
            false,
            {
                pronoun_subject: 'they',
                pronoun_object: 'them',
                possessive_determiner: 'their',
                possessive_pronoun: 'aers',
                reflexive: 'themselves',
            },
            [true],
            [false],
            [],
            '__generator__',
            false,
        ));
    });
    test('fails when too few parts are given', () => {
        expect(buildPronoun(pronouns, 'ae, translator,aer,aer,aers,aerself', translator)).toBeNull();
    });
    test('fails when many few parts are given', () => {
        expect(buildPronoun(pronouns, 'ae, translator,aer,aer,aers,aerself,aersing,0,', translator)).toBeNull();
    });
    test('fails when base pronoun is unknown', () => {
        expect(buildPronoun(pronouns, 's/he, translator,!2,aers,!2,', translator)).toBeNull();
    });
});

describe('builds interchangable pronouns from ampersand', () => {
    test('two interchangable pronouns', () => {
        const actual = expect(buildPronoun(pronouns, 'he&she', translator));
        actual.toBeDefined();
        actual.toEqual(new Pronoun(
            'he&she',
            ['Normative “he/him”', 'Normative “she/her”'],
            true,
            {
                pronoun_subject: 'he&she',
                pronoun_object: 'him&her',
                possessive_determiner: 'his&her',
                possessive_pronoun: 'his&hers',
                reflexive: 'himself&herself',
            },
            [false, false],
            [false, false],
            [],
            '',
            false,
        ));
    });
    test('three interchangable pronouns', () => {
        const actual = expect(buildPronoun(pronouns, 'he&she&they', translator));
        actual.toBeDefined();
        actual.toEqual(new Pronoun(
            'he&she&they',
            ['Normative “he/him”', 'Normative “she/her”', 'Singular “they”'],
            true,
            {
                pronoun_subject: 'he&she&they',
                pronoun_object: 'him&her&them',
                possessive_determiner: 'his&her&their',
                possessive_pronoun: 'his&hers&theirs',
                reflexive: 'himself&herself&themselves',
            },
            [false, false, true],
            [false, false, true],
            [],
            '',
            false,
        ));
    });
});