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import {decode as decodeCompact} from '../../../json-crdt-patch/codec/compact/decode';
import {decode as decodeJson} from '../../../json-crdt-patch/codec/verbose/decode';
import {Decoder as BinaryDecoder} from '../../codec/structural/binary/Decoder';
import {Decoder as CompactDecoder} from '../../codec/structural/compact/Decoder';
import {Decoder as JsonDecoder} from '../../codec/structural/verbose/Decoder';
import {DelOp, InsObjOp, InsStrOp, InsBinOp, InsArrOp, UpdArrOp} from '../../../json-crdt-patch/operations';
import {encode as encodeCompact} from '../../../json-crdt-patch/codec/compact/encode';
import {encode as encodeJson} from '../../../json-crdt-patch/codec/verbose/encode';
import {Encoder as BinaryEncoder} from '../../codec/structural/binary/Encoder';
import {Encoder as CompactEncoder} from '../../codec/structural/compact/Encoder';
import {Encoder as JsonEncoder} from '../../codec/structural/verbose/Encoder';
import {Encoder as IndexedBinaryEncoder} from '../../codec/indexed/binary/Encoder';
import {Decoder as IndexedBinaryDecoder} from '../../codec/indexed/binary/Decoder';
import {generateInteger} from './util';
import type {Model} from '../..';
import type {Patch} from '../../../json-crdt-patch/Patch';
import {PatchBuilder} from '../../../json-crdt-patch/PatchBuilder';
import {RandomJson} from '@jsonjoy.com/util/lib/json-random/RandomJson';
import {randomU32} from 'hyperdyperid/lib/randomU32';
import {StrNode, ValNode, ObjNode, ArrNode, BinNode} from '../../nodes';
import {interval} from '../../../json-crdt-patch/clock';
import type {JsonCrdtFuzzer} from './JsonCrdtFuzzer';
import {Fuzzer} from '@jsonjoy.com/util/lib/Fuzzer';
const jsonEncoder = new JsonEncoder();
const jsonDecoder = new JsonDecoder();
const compactEncoder = new CompactEncoder();
const compactDecoder = new CompactDecoder();
const binaryEncoder = new BinaryEncoder();
const binaryDecoder = new BinaryDecoder();
const indexedBinaryEncoder = new IndexedBinaryEncoder();
const indexedBinaryDecoder = new IndexedBinaryDecoder();
export class SessionLogical {
public models: Model[] = [];
public patches: Patch[][] = [];
public modelStart: unknown;
public modelsStart: unknown[] = [];
public modelsEnd: unknown[] = [];
public patchesSerialized: unknown[][] = [];
public readonly debug = false;
public constructor(
public fuzzer: JsonCrdtFuzzer,
public concurrency: number,
) {
Iif (this.debug) this.modelStart = jsonEncoder.encode(fuzzer.model);
for (let i = 0; i < concurrency; i++) {
const model = fuzzer.model.fork();
this.models.push(model);
Iif (this.debug) this.modelsStart.push(jsonEncoder.encode(model));
this.patches.push([]);
this.patchesSerialized.push([]);
}
}
public generateEdits() {
for (let i = 0; i < this.concurrency; i++) {
this.generatePeerEdits(i);
}
}
private generatePeerEdits(peer: number) {
const patchCount = generateInteger(...this.fuzzer.opts.patchesPerPeer);
for (let patchIndex = 0; patchIndex < patchCount; patchIndex++) {
this.generatePatchForPeer(peer);
}
}
private generatePatchForPeer(peer: number) {
const model = this.models[peer];
const node = this.fuzzer.picker.pickNode(model);
let patch: Patch | null = null;
if (node instanceof StrNode) patch = this.generateStringPatch(model, node);
else if (node instanceof BinNode) patch = this.generateBinaryPatch(model, node);
else if (node instanceof ObjNode) patch = this.generateObjectPatch(model, node);
else if (node instanceof ArrNode) patch = this.generateArrayPatch(model, node);
else if (node instanceof ValNode) patch = this.generateValuePatch(model, node);
else return;
Iif (!patch) return;
model.applyPatch(patch);
if (this.fuzzer.opts.testCodecs) {
if (patch.span()) {
if (randomU32(0, 1)) patch = decodeJson(encodeJson(patch));
if (randomU32(0, 1)) patch = decodeCompact(encodeCompact(patch));
if (randomU32(0, 1)) patch = decodeBinary(encodeBinary(patch));
}
}
this.patches[peer].push(patch);
Iif (this.debug) this.patchesSerialized[peer].push(encodeJson(patch));
}
private generateStringPatch(model: Model, node: StrNode): Patch | null {
const opcode = this.fuzzer.picker.pickStringOperation(node);
const builder = new PatchBuilder(model.clock);
const size = node.length();
if (opcode === InsStrOp) {
const substring = this.fuzzer.picker.generateSubstring();
const pos = !size ? 0 : Math.min(size - 1, Math.floor(Math.random() * (size + 1)));
const posId = !size ? node.id : node.find(pos)!;
builder.insStr(node.id, posId, substring);
} else if (opcode === DelOp) {
Iif (!size) return null;
const pos = randomU32(0, size - 1);
const length = randomU32(1, size - pos);
const spans = node.findInterval(pos, length);
builder.del(node.id, spans);
}
return builder.patch;
}
private generateBinaryPatch(model: Model, node: BinNode): Patch | null {
const opcode = this.fuzzer.picker.pickBinaryOperation(node);
const builder = new PatchBuilder(model.clock);
const size = node.length();
if (opcode === InsBinOp) {
const substring = this.fuzzer.picker.generateBinaryData();
const pos = !size ? 0 : Math.min(size - 1, Math.floor(Math.random() * (size + 1)));
const posId = !size ? node.id : node.find(pos)!;
builder.insBin(node.id, posId, substring);
} else if (opcode === DelOp) {
Iif (!size) return null;
const pos = randomU32(0, size - 1);
const length = randomU32(1, size - pos);
const spans = node.findInterval(pos, length);
builder.del(node.id, spans);
}
return builder.patch;
}
private generateObjectPatch(model: Model, node: ObjNode): Patch {
const [key, opcode] = this.fuzzer.picker.pickObjectOperation(node);
const builder = new PatchBuilder(model.clock);
if (opcode === InsObjOp) {
const json = RandomJson.generate({
nodeCount: 3,
odds: {
null: 1,
boolean: 2,
number: 10,
string: 8,
binary: 4,
array: 2,
object: 2,
},
});
// console.log('ADDING KEY', key, json);
const valueId = builder.json(json);
builder.insObj(node.id, [[key, valueId]]);
} else {
// console.log('DELETING KEY', JSON.stringify(key))
builder.insObj(node.id, [[key, builder.con(undefined)]]);
}
return builder.patch;
}
private generateArrayPatch(model: Model, node: ArrNode): Patch {
const opcode = this.fuzzer.picker.pickArrayOperation(node);
const builder = new PatchBuilder(model.clock);
const length = node.length();
if (!length || opcode === InsArrOp) {
const json = RandomJson.generate({nodeCount: Math.ceil(Math.random() * 5)});
const valueId = builder.json(json);
if (!length) builder.insArr(node.id, node.id, [valueId]);
else {
const pos = Math.ceil(Math.random() * length);
Iif (!pos) builder.insArr(node.id, node.id, [valueId]);
else {
const afterId = node.find(pos - 1)!;
builder.insArr(node.id, afterId, [valueId]);
}
}
} else if (opcode === UpdArrOp) {
const pos = Math.floor(Math.random() * length);
const keyId = node.find(pos);
if (keyId) {
const json = RandomJson.generate({nodeCount: Math.ceil(Math.random() * 5)});
const valueId = builder.json(json);
builder.updArr(node.id, keyId, valueId);
}
} else {
Iif (!length) return builder.patch;
const pos = Math.floor(Math.random() * length);
const valueId = node.find(pos)!;
builder.del(node.id, [interval(valueId, 0, 1)]);
}
return builder.patch;
}
private generateValuePatch(model: Model, node: ValNode): Patch {
const builder = new PatchBuilder(model.clock);
const value =
Math.random() > 0.1
? Fuzzer.pick([0, 1, -1, 5, -5, 1111, -2222, 4444444444, -888888888888, RandomJson.genNumber()])
: RandomJson.generate();
builder.setVal(node.id, builder.constOrJson(value));
return builder.patch;
}
public synchronize() {
for (let i = 0; i < this.concurrency; i++) {
let model = this.models[i];
if (this.fuzzer.opts.testCodecs) {
if (randomU32(0, 1)) model = jsonDecoder.decode(jsonEncoder.encode(model));
if (randomU32(0, 1)) model = compactDecoder.decode(compactEncoder.encode(model));
if (randomU32(0, 1)) model = binaryDecoder.decode(binaryEncoder.encode(model));
if (randomU32(0, 1)) model = indexedBinaryDecoder.decode(indexedBinaryEncoder.encode(model));
}
for (let j = 0; j < this.concurrency; j++) {
const patches = this.patches[j];
for (const patch of patches) {
model.applyPatch(patch);
}
}
this.models[i] = model;
}
for (let j = 0; j < this.concurrency; j++) {
const patches = this.patches[j];
for (const patch of patches) {
this.fuzzer.model.applyPatch(patch);
}
}
Iif (this.debug) for (const model of this.models) this.modelsEnd.push(jsonEncoder.encode(model));
}
}
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