json-crdt-repo/lib/remote/DemoServerRemoteHistory.js

JSON CRDT server and syncing local-first browser client

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.DemoServerRemoteHistory = void 0;
const shareByKey_1 = require("../util/rx/shareByKey");
class DemoServerRemoteHistory {
    constructor(client, clientId = 0) {
        this.client = client;
        this.clientId = clientId;
        this.listen = (0, shareByKey_1.shareByKey)((id) => this.client.call$('block.listen', { id, clientId: this.clientId }));
    }
    async read(id) {
        return await this.client.call('block.get', { id });
    }
    async pull(id, seq = -1, create = false) {
        return await this.client.call('block.pull', { id, seq, create });
    }
    async create(id, batch) {
        const res = await this.client.call('block.new', batch ? { id, batch } : { id });
        return {
            snapshot: {
                seq: res.snapshot.seq,
            },
            batch: {
                seq: res.snapshot.seq,
                ts: res.snapshot.ts,
            },
        };
    }
    async update(id, batch, seq) {
        const res = await this.client.call('block.upd', {
            create: true,
            id,
            batch,
            seq,
            clientId: this.clientId,
        });
        return {
            batch: res.batch,
            pull: res.pull,
        };
    }
    async delete(id) {
        await this.client.call('block.del', { id });
    }
    async scanFwd(id, seq) {
        const limit = 100;
        const res = await this.client.call('block.scan', {
            id,
            seq: seq + 1,
            limit,
        });
        return res;
    }
    async scanBwd(id, seq, snapshot) {
        if (seq <= 0)
            throw new Error('INV_SEQ');
        const startSeq = Math.max(0, seq - 100);
        const limit = seq - startSeq;
        const res = await this.client.call('block.scan', {
            id,
            seq: startSeq,
            limit,
            snapshot: !!snapshot,
        });
        return res;
    }
}
exports.DemoServerRemoteHistory = DemoServerRemoteHistory;