import { LocalStorageAdapter } from '@/lib/storage/storage.adapter';
import { promises as fs } from 'fs';
import path from 'path';

describe('LocalStorageAdapter', () => {
    const testUploadDir = 'tests/tmp/uploads';
    let adapter: LocalStorageAdapter;

    beforeEach(async () => {
        adapter = new LocalStorageAdapter(testUploadDir);
        // Clean up test directory before each test
        try {
            await fs.rm(testUploadDir, { recursive: true, force: true });
        } catch {
            // Directory doesn't exist yet
        }
    });

    afterEach(async () => {
        // Clean up test directory after each test
        try {
            await fs.rm(testUploadDir, { recursive: true, force: true });
        } catch {
            // Directory might not exist
        }
    });

    describe('put', () => {
        it('should create uploads directory if it does not exist', async () => {
            const key = 'test-image.jpg';
            const file = Buffer.from('test file content');

            await adapter.put(key, file, 'image/jpeg');

            const dirExists = await fs
                .stat(testUploadDir)
                .then(() => true)
                .catch(() => false);
            expect(dirExists).toBe(true);
        });

        it('should save file to disk with provided key', async () => {
            const key = 'test-image.jpg';
            const fileContent = 'test file content';
            const file = Buffer.from(fileContent);

            await adapter.put(key, file, 'image/jpeg');

            const savedContent = await fs.readFile(
                path.join(testUploadDir, key),
                'utf-8'
            );
            expect(savedContent).toBe(fileContent);
        });

        it('should return StorageResult with local type', async () => {
            const key = 'test-image.jpg';
            const file = Buffer.from('test file content');

            const result = await adapter.put(key, file, 'image/jpeg');

            expect(result).toEqual({
                type: 'local',
                provider: null,
                key,
                publicUrl: `/tests/tmp/uploads/test-image.jpg`,
            });
        });

        it('should handle Blob input', async () => {
            const key = 'test-blob.jpg';
            const fileContent = 'blob file content';
            const blob = new Blob([fileContent], { type: 'image/jpeg' });

            const result = await adapter.put(key, blob, 'image/jpeg');

            const savedContent = await fs.readFile(
                path.join(testUploadDir, key),
                'utf-8'
            );
            expect(savedContent).toBe(fileContent);
            expect(result.type).toBe('local');
        });

        it('should create nested directories for keys with paths', async () => {
            const key = 'articles/2026/04/image.jpg';
            const file = Buffer.from('nested file content');

            const result = await adapter.put(key, file, 'image/jpeg');

            const savedContent = await fs.readFile(
                path.join(testUploadDir, key),
                'utf-8'
            );
            expect(savedContent).toBe('nested file content');
            expect(result.publicUrl).toBe(
                `/tests/tmp/uploads/articles/2026/04/image.jpg`
            );
        });
    });

    describe('delete', () => {
        it('should delete file from disk', async () => {
            const key = 'test-image.jpg';
            const file = Buffer.from('test file content');

            await adapter.put(key, file, 'image/jpeg');
            const filePathBeforeDelete = path.join(testUploadDir, key);
            expect(
                await fs
                    .stat(filePathBeforeDelete)
                    .then(() => true)
                    .catch(() => false)
            ).toBe(true);

            await adapter.delete(key);

            const fileExists = await fs
                .stat(filePathBeforeDelete)
                .then(() => true)
                .catch(() => false);
            expect(fileExists).toBe(false);
        });

        it('should not throw error if file does not exist', async () => {
            const key = 'non-existent-file.jpg';

            // Should not throw
            await expect(adapter.delete(key)).resolves.toBeUndefined();
        });

        it('should delete nested files', async () => {
            const key = 'articles/2026/04/image.jpg';
            const file = Buffer.from('nested file content');

            await adapter.put(key, file, 'image/jpeg');
            await adapter.delete(key);

            const fileExists = await fs
                .stat(path.join(testUploadDir, key))
                .then(() => true)
                .catch(() => false);
            expect(fileExists).toBe(false);
        });
    });
});