import * as Block from 'multiformats/block';
import * as Raw from 'multiformats/codecs/raw';
import { sha256 } from 'multiformats/hashes/sha2';
import { BlockstoreLevel } from '../../src/store/blockstore-level.js';
import { afterEach, beforeEach, describe, expect, it } from 'bun:test';
let testCounter = 0;
function uniqueLocation() {
    return `TEST-BLOCKSTORE-LEVEL-${Date.now()}-${testCounter++}`;
}
describe('BlockstoreLevel', () => {
    let blockstore;
    beforeEach(async () => {
        blockstore = new BlockstoreLevel({ location: uniqueLocation() });
        await blockstore.open();
    });
    afterEach(async () => {
        await blockstore.clear();
        await blockstore.close();
    });
    it('should report isEmpty correctly', async () => {
        expect(await blockstore.isEmpty()).toBe(true);
        const block1 = await Block.encode({ value: new TextEncoder().encode('test'), codec: Raw, hasher: sha256 });
        await blockstore.put(block1.cid, block1.bytes);
        expect(await blockstore.isEmpty()).toBe(false);
    });
    it('should put and get blocks', async () => {
        const block1 = await Block.encode({ value: new TextEncoder().encode('hello'), codec: Raw, hasher: sha256 });
        await blockstore.put(block1.cid, block1.bytes);
        const result = await blockstore.get(block1.cid);
        expect(result).toEqual(block1.bytes);
    });
    it('should putMany blocks', async () => {
        const block1 = await Block.encode({ value: new TextEncoder().encode('put1'), codec: Raw, hasher: sha256 });
        const block2 = await Block.encode({ value: new TextEncoder().encode('put2'), codec: Raw, hasher: sha256 });
        const source = [
            { cid: block1.cid, block: block1.bytes },
            { cid: block2.cid, block: block2.bytes },
        ];
        const results = [];
        for await (const cid of blockstore.putMany(source)) {
            results.push(cid);
        }
        expect(results).toHaveLength(2);
        expect(await blockstore.has(block1.cid)).toBe(true);
        expect(await blockstore.has(block2.cid)).toBe(true);
    });
    it('should getMany blocks', async () => {
        const block1 = await Block.encode({ value: new TextEncoder().encode('get1'), codec: Raw, hasher: sha256 });
        const block2 = await Block.encode({ value: new TextEncoder().encode('get2'), codec: Raw, hasher: sha256 });
        await blockstore.put(block1.cid, block1.bytes);
        await blockstore.put(block2.cid, block2.bytes);
        const results = [];
        for await (const pair of blockstore.getMany([block1.cid, block2.cid])) {
            results.push(pair);
        }
        expect(results).toHaveLength(2);
        expect(results[0].cid.toString()).toBe(block1.cid.toString());
        expect(results[0].block).toEqual(block1.bytes);
        expect(results[1].cid.toString()).toBe(block2.cid.toString());
        expect(results[1].block).toEqual(block2.bytes);
    });
    // NOTE: getAll() is not tested because it assumes keys are binary-encoded CIDs
    // (via keyEncoding: 'buffer' + CID.decode), but put() stores keys as String(cid).
    // This mismatch means getAll() would fail with "Invalid CID version" when decoding
    // the string bytes. This appears to be a pre-existing bug in the codebase — getAll()
    // is never called by any production code.
    it('should deleteMany blocks', async () => {
        const block1 = await Block.encode({ value: new TextEncoder().encode('del1'), codec: Raw, hasher: sha256 });
        const block2 = await Block.encode({ value: new TextEncoder().encode('del2'), codec: Raw, hasher: sha256 });
        await blockstore.put(block1.cid, block1.bytes);
        await blockstore.put(block2.cid, block2.bytes);
        const deleted = [];
        for await (const cid of blockstore.deleteMany([block1.cid, block2.cid])) {
            deleted.push(cid);
        }
        expect(deleted).toHaveLength(2);
        expect(await blockstore.has(block1.cid)).toBe(false);
        expect(await blockstore.has(block2.cid)).toBe(false);
    });
});
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