/*
 * Squidex Headless CMS
 *
 * @license
 * Copyright (c) Squidex UG (haftungsbeschränkt). All rights reserved.
 */

// tslint:disable: max-line-length

import { AbstractControl, FormArray } from '@angular/forms';
import { AppLanguageDto, createProperties, EditContentForm, getContentValue, HtmlValue, LanguageDto, RootFieldDto } from '@app/shared/internal';
import { FieldRule } from './../services/schemas.service';
import { FieldArrayForm } from './contents.forms';
import { PartitionConfig } from './contents.forms-helpers';
import { TestValues } from './_test-helpers';

const {
    createField,
    createNestedField,
    createSchema
} = TestValues;

describe('GetContentValue', () => {
    const language = new LanguageDto('en', 'English');
    const fieldInvariant = createField({ properties: createProperties('Number'), partitioning: 'invariant' });
    const fieldLocalized = createField({ properties: createProperties('Number') });
    const fieldAssets = createField({ properties: createProperties('Assets') });

    it('should resolve image url and filename from referenced asset', () => {
        const content: any = {
            referenceData: {
                field1: {
                    en: ['url/to/13', 'file13']
                }
            }
        };

        const assetWithImageAndFileName = createField({ properties: createProperties('Assets', { previewMode: 'ImageAndFileName' }) });

        const result = getContentValue(content, language, assetWithImageAndFileName);

        expect(result).toEqual({ value: ['url/to/13', 'file13'], formatted: new HtmlValue('<img src="url/to/13?width=50&height=50" /> <span>file13</span>') });
    });

    it('should resolve image url only from referenced asset', () => {
        const content: any = {
            referenceData: {
                field1: {
                    en: ['url/to/13', 'file13']
                }
            }
        };

        const assetWithImage = createField({ properties: createProperties('Assets', { previewMode: 'Image' }) });

        const result = getContentValue(content, language, assetWithImage);

        expect(result).toEqual({ value: ['url/to/13', 'file13'], formatted: new HtmlValue('<img src="url/to/13?width=50&height=50" />') });
    });

    it('should resolve filename only from referenced asset', () => {
        const content: any = {
            referenceData: {
                field1: {
                    en: ['url/to/13', 'file13']
                }
            }
        };

        const assetWithFileName = createField({ properties: createProperties('Assets', { previewMode: 'FileName' }) });

        const result = getContentValue(content, language, assetWithFileName);

        expect(result).toEqual({ value: ['url/to/13', 'file13'], formatted: 'file13' });
    });

    it('should resolve filename from referenced asset', () => {
        const content: any = {
            referenceData: {
                field1: {
                    en: ['file13']
                }
            }
        };

        const result = getContentValue(content, language, fieldAssets);

        expect(result).toEqual({ value: ['file13'], formatted: 'file13' });
    });

    it('should not image url if not found', () => {
        const content: any = {
            referenceData: {
                field1: {
                    en: null
                }
            }
        };

        const result = getContentValue(content, language, fieldAssets);

        expect(result).toEqual({ value: '-', formatted: '-' });
    });

    it('should resolve string field from references value', () => {
        const content: any = {
            referenceData: {
                field1: {
                    iv: '13'
                }
            }
        };

        const result = getContentValue(content, language, fieldInvariant);

        expect(result).toEqual({ value: '13', formatted: '13' });
    });

    it('should resolve invariant field from references value', () => {
        const content: any = {
            referenceData: {
                field1: {
                    iv: {
                        en: '13'
                    }
                }
            }
        };

        const result = getContentValue(content, language, fieldInvariant);

        expect(result).toEqual({ value: '13', formatted: '13' });
    });

    it('should resolve localized field from references value', () => {
        const content: any = {
            referenceData: {
                field1: {
                    en: {
                        en: '13'
                    }
                }
            }
        };

        const result = getContentValue(content, language, fieldLocalized);

        expect(result).toEqual({ value: '13', formatted: '13' });
    });

    it('should return default value if reference field not found', () => {
        const content: any = {
            referenceData: {
                field1: {
                    iv: {
                        en: '13'
                    }
                }
            }
        };

        const result = getContentValue(content, language, fieldLocalized);

        expect(result).toEqual({ value: '-', formatted: '-' });
    });

    it('should resolve invariant field', () => {
        const content: any = {
            data: {
                field1: {
                    iv: 13
                }
            }
        };

        const result = getContentValue(content, language, fieldInvariant);

        expect(result).toEqual({ value: 13, formatted: '13' });
    });

    it('should resolve localized field', () => {
        const content: any = {
            data: {
                field1: {
                    en: 13
                }
            }
        };

        const result = getContentValue(content, language, fieldLocalized);

        expect(result).toEqual({ value: 13, formatted: '13' });
    });

    it('should return default values if field not found', () => {
        const content: any = {
            data: {
                other: {
                    en: 13
                }
            }
        };

        const result = getContentValue(content, language, fieldLocalized);

        expect(result).toEqual({ value: undefined, formatted: '' });
    });
});

describe('ContentForm', () => {
    const languages = [
        new AppLanguageDto({}, 'en', 'English', true, false, []),
        new AppLanguageDto({}, 'de', 'English', false, true, [])
    ];

    const complexSchema = createSchema({ fields: [
        createField({ id: 1, properties: createProperties('String'), partitioning: 'invariant' }),
        createField({ id: 2, properties: createProperties('String'), isDisabled: true }),
        createField({ id: 3, properties: createProperties('String', { isRequired: true }) }),
        createField({ id: 4, properties: createProperties('Array'), partitioning: 'invariant', nested: [
            createNestedField({ id: 41, properties: createProperties('String') }),
            createNestedField({ id: 42, properties: createProperties('String', { defaultValue: 'Default' }), isDisabled: true })
        ]})
    ]});

    describe('should resolve partitions', () => {
        const partitions = new PartitionConfig(languages);

        it('should return invariant partitions', () => {
            const result = partitions.getAll(createField({ id: 3, properties: createProperties('String'), partitioning: 'invariant' }));

            expect(result).toEqual([
                { key: 'iv', isOptional: false }
            ]);
        });

        it('should return language partitions', () => {
            const result = partitions.getAll(createField({ id: 3, properties: createProperties('String') }));

            expect(result).toEqual([
                { key: 'en', isOptional: false },
                { key: 'de', isOptional: true }
            ]);
        });

        it('should return partition for language', () => {
            const result = partitions.get(languages[1]);

            expect(result).toEqual({ key: 'de', isOptional: true });
        });

        it('should return partition for no language', () => {
            const result = partitions.get();

            expect(result).toEqual({ key: 'iv', isOptional: false });
        });
    });

    describe('with complex form', () => {
        it('should not enabled disabled fields', () => {
            const contentForm = createForm([
                createField({ id: 1, properties: createProperties('String') }),
                createField({ id: 2, properties: createProperties('String'), isDisabled: true })
            ]);

            expectForm(contentForm.form, 'field1', { disabled: false });
            expectForm(contentForm.form, 'field2', { disabled: true });
        });

        it('should not create required validator for optional language', () => {
            const contentForm = createForm([
                createField({ id: 3, properties: createProperties('String', { isRequired: true }) })
            ]);

            expectForm(contentForm.form, 'field3.en', { invalid: true });
            expectForm(contentForm.form, 'field3.de', { invalid: false });
        });

        it('should require field based on condition', () => {
            const contentForm = createForm([
                createField({ id: 1, properties: createProperties('Number'), partitioning: 'invariant' }),
                createField({ id: 2, properties: createProperties('Number'), partitioning: 'invariant' })
            ], [{
                field: 'field1', action: 'Require', condition: 'data.field2.iv < 100'
            }]);

            const field1 = contentForm.get('field1')!.get('iv');
            const field2 = contentForm.get('field2');

            expect(field1!.form.valid).toBeFalsy();

            contentForm.load({
                field2: {
                    iv: 120
                }
            });

            expect(field1!.form.valid).toBeTruthy();

            field2?.get('iv')!.form.setValue(99);

            expect(field1!.form.valid).toBeFalsy();
        });

        it('should disable field based on condition', () => {
            const contentForm = createForm([
                createField({ id: 1, properties: createProperties('Number'), partitioning: 'invariant' }),
                createField({ id: 2, properties: createProperties('Number'), partitioning: 'invariant' })
            ], [{
                field: 'field1', action: 'Disable', condition: 'data.field2.iv > 100'
            }]);

            const field1 = contentForm.get('field1');
            const field1_iv = contentForm.get('field1')!.get('iv');

            const field2 = contentForm.get('field2');

            expect(field1!.form.disabled).toBeFalsy();

            contentForm.load({
                field1: {
                    iv: 120
                },
                field2: {
                    iv: 120
                }
            });

            expect(field1!.form.disabled).toBeTruthy();
            expect(field1_iv!.form.disabled).toBeTruthy();

            field2?.get('iv')!.form.setValue(99);

            expect(field1!.form.disabled).toBeFalsy();
            expect(field1_iv!.form.disabled).toBeFalsy();
        });

        it('should hide field based on condition', () => {
            const contentForm = createForm([
                createField({ id: 1, properties: createProperties('Number'), partitioning: 'invariant' }),
                createField({ id: 2, properties: createProperties('Number'), partitioning: 'invariant' })
            ], [{
                field: 'field1', action: 'Hide', condition: 'data.field2.iv > 100'
            }]);

            const field1 = contentForm.get('field1');
            const field1_iv = contentForm.get('field1')!.get('iv');

            const field2 = contentForm.get('field2');

            expect(field1!.hidden).toBeFalsy();

            contentForm.load({
                field1: {
                    iv: 120
                },
                field2: {
                    iv: 120
                }
            });

            expect(field1!.hidden).toBeTruthy();
            expect(field1_iv!.hidden).toBeTruthy();

            field2?.get('iv')!.form.setValue(99);

            expect(field1!.hidden).toBeFalsy();
            expect(field1_iv!.hidden).toBeFalsy();

        });

        it('should disable nested fields based on condition', () => {
            const contentForm = createForm([
                createField({ id: 4, properties: createProperties('Array'), partitioning: 'invariant', nested: [
                    createNestedField({ id: 41, properties: createProperties('Number') }),
                    createNestedField({ id: 42, properties: createProperties('Number') })
                ]})
            ], [{
                field: 'field4.nested42', action: 'Disable', condition: 'itemData.nested41 > 100'
            }]);

            const array = contentForm.get(complexSchema.fields[3])!.get(languages[0]) as FieldArrayForm;

            contentForm.load({
                field4: {
                    iv: [{
                        nested41: 120,
                        nested42: 120
                    }, {
                        nested41: 99,
                        nested42: 99
                    }]
                }
            });

            expect(array.get(0)!.get('nested42')!.form.disabled).toBeTruthy();
            expect(array.get(1)!.get('nested42')!.form.disabled).toBeFalsy();
        });

        it('should hide nested fields based on condition', () => {
            const contentForm = createForm([
                createField({ id: 4, properties: createProperties('Array'), partitioning: 'invariant', nested: [
                    createNestedField({ id: 41, properties: createProperties('Number') }),
                    createNestedField({ id: 42, properties: createProperties('Number') })
                ]})
            ], [{
                field: 'field4.nested42', action: 'Hide', condition: 'itemData.nested41 > 100'
            }]);

            const array = contentForm.get(complexSchema.fields[3])!.get(languages[0]) as FieldArrayForm;

            contentForm.load({
                field4: {
                    iv: [{
                        nested41: 120,
                        nested42: 120
                    }, {
                        nested41: 99,
                        nested42: 99
                    }]
                }
            });

            expect(array.get(0)!.get('nested42')!.hidden).toBeTruthy();
            expect(array.get(1)!.get('nested42')!.hidden).toBeFalsy();
        });

        it('should load with array and not enable disabled nested fields', () => {
            const { contentForm, array } = createArrayFormWith2Items();

            contentForm.load({
                field4: {
                    iv: [{
                        nested41: 'Text'
                    }]
                }
            });

            const nestedItem = array.form.get([0])!;

            expectLength(array, 1);
            expectForm(nestedItem, 'nested41', { disabled: false, value: 'Text' });
            expectForm(nestedItem, 'nested42', { disabled: true,  value: null });
        });

        it('should add array item', () => {
            const { array } = createArrayFormWith2Items();

            array.addItem();

            const nestedItem = array.form.get([2])!;

            expectLength(array, 3);
            expectForm(nestedItem, 'nested41', { disabled: false, value: null });
            expectForm(nestedItem, 'nested42', { disabled: true,  value: 'Default' });
        });

        it('should sort array item', () => {
            const { array } = createArrayFormWith2Items();

            array.sort([array.get(1), array.get(0)]);

            expectLength(array, 2);
            expect(array.form.value).toEqual([{ nested41: 'Text2' }, { nested41: 'Text1' }]);
        });

        it('should remove array item', () => {
            const { array } = createArrayFormWith2Items();

            array.removeItemAt(0);

            expectLength(array, 1);
            expect(array.form.value).toEqual([{ nested41: 'Text2' }]);
        });

        it('should reset array item', () => {
            const { array } = createArrayFormWith2Items();

            array.reset();

            expectLength(array, 0);
            expect(array.form.value).toEqual([]);
        });

        it('should unset array item', () => {
            const { array } = createArrayFormWith2Items();

            array.unset();

            expectLength(array, 0);
            expect(array.form.value).toEqual(undefined);
        });

        it('should not array item if field has no nested fields', () => {
            const contentForm = createForm([
                createField({ id: 4, properties: createProperties('Array'), partitioning: 'invariant' })
            ]);

            const nestedForm = contentForm.form.get('field4.iv') as FormArray;

            expect(nestedForm.controls.length).toBe(0);
        });

        function createArrayFormWith2Items() {
            const contentForm = createForm([
                createField({ id: 4, properties: createProperties('Array'), partitioning: 'invariant', nested: [
                    createNestedField({ id: 41, properties: createProperties('String') }),
                    createNestedField({ id: 42, properties: createProperties('String', { defaultValue: 'Default' }), isDisabled: true })
                ]})
            ]);

            const array = contentForm.get('field4')!.get('iv') as FieldArrayForm;

            contentForm.load({
                field4: {
                    iv: [{
                        nested41: 'Text1'
                    }, {
                        nested41: 'Text2'
                    }]
                }
            });

            return { contentForm, array };
        }

        function expectLength(array: FieldArrayForm, length: number) {
            expect(array.form.controls.length).toBe(length);
            expect(array.items.length).toBe(length);
        }

        function expectForm(parent: AbstractControl, path: string, test: { invalid?: boolean, disabled?: boolean, value?: any }) {
            const form = parent.get(path);

            if (form) {
                for (const key in test) {
                    if (test.hasOwnProperty(key)) {
                        const a = form[key];
                        const e = test[key];

                        expect(a).toBe(e, `Expected ${key} of ${path} to be <${e}>, but found <${a}>.`);
                    }
                }
            } else {
                expect(form).not.toBeNull(`Expected to find form ${path}, but form not found.`);
            }
        }
    });

    it('should return true if new value is not equal to current value', () => {
        const simpleForm = createForm([
            createField({ id: 1, properties: createProperties('String'), partitioning: 'invariant' })
        ]);

        const hasChanged = simpleForm.hasChanges({ field1: { iv: 'other' }});

        expect(hasChanged).toBeTruthy();
    });

    it('should return false if new value is same as current value', () => {
        const simpleForm = createForm([
            createField({ id: 1, properties: createProperties('String'), partitioning: 'invariant' })
        ]);

        const hasChanged = simpleForm.hasChanges({ field1: { iv: null }});

        expect(hasChanged).toBeFalsy();
    });

    describe('for new content', () => {
        let simpleForm: EditContentForm;

        beforeEach(() => {
            simpleForm = createForm([
                createField({ id: 1, properties: createProperties('String'), partitioning: 'invariant' })
            ]);
        });

        it('should not be an unsaved change when nothing has changed', () => {
            expect(simpleForm.hasChanged()).toBeFalsy();
        });

        it('should be an unsaved change when value has changed but not saved', () => {
            simpleForm.form.setValue({ field1: { iv: 'Change' }});

            expect(simpleForm.hasChanged()).toBeTruthy();
        });

        it('should not be an unsaved change when value has changed and saved', () => {
            simpleForm.form.setValue({ field1: { iv: 'Change' }});
            simpleForm.submit();
            simpleForm.submitCompleted();

            expect(simpleForm.hasChanged()).toBeFalsy();
        });

        it('should subscribe to values', () => {
            simpleForm.form.setValue({ field1: { iv: 'Change' }});

            let value: any;

            simpleForm.valueChanges.subscribe(v => {
                value = v;
            });

            expect(value).toEqual({ field1: { iv: 'Change' }});
        });
    });

    describe('for editing content', () => {
        let simpleForm: EditContentForm;

        beforeEach(() => {
            simpleForm = createForm([
                createField({ id: 1, properties: createProperties('String'), partitioning: 'invariant' })
            ]);
            simpleForm.load({ field1: { iv: 'Initial' } }, true);
        });

        it('should not be an unsaved change when nothing has changed', () => {
            simpleForm.load({ field1: { iv: 'Initial' } }, true);

            expect(simpleForm.hasChanged()).toBeFalsy();
        });

        it('should be an unsaved change when value has changed but not saved', () => {
            simpleForm.form.setValue({ field1: { iv: 'Change' }});

            expect(simpleForm.hasChanged()).toBeTruthy();
        });

        it('should be an unsaved change when value has been loaded but not saved', () => {
            simpleForm.load({ field1: { iv: 'Prev' } });

            expect(simpleForm.hasChanged()).toBeTruthy();
        });

        it('should not be an unsaved change when value has changed and saved', () => {
            simpleForm.form.setValue({ field1: { iv: 'Change' }});
            simpleForm.submit();
            simpleForm.submitCompleted();

            expect(simpleForm.hasChanged()).toBeFalsy();
        });

        it('should not be an unsaved change when value has been loaded but not saved', () => {
            simpleForm.load({ field1: { iv: 'Prev' } });
            simpleForm.submit();
            simpleForm.submitCompleted();

            expect(simpleForm.hasChanged()).toBeFalsy();
        });
    });

    function createForm(fields: RootFieldDto[], fieldRules: FieldRule[] = []) {
        return new EditContentForm(languages,
            createSchema({ fields, fieldRules }), {}, 0);
    }
});