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import { mkdtempSync, readdirSync, rmSync, writeFileSync } from "node:fs";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { afterEach, beforeEach, describe, expect, it } from "vitest";
import {
EMPTY_NODE_STATE,
nodeState,
readServiceState,
removeNodeState,
serviceStatePath,
updateNodeState,
writeServiceState,
} from "../src/state.js";
let dir: string;
beforeEach(() => {
dir = mkdtempSync(join(tmpdir(), "mattertimesync-state-"));
});
afterEach(() => {
rmSync(dir, { recursive: true, force: true });
});
describe("service state", () => {
it("returns empty state when the file does not exist", () => {
expect(readServiceState(join(dir, "missing.json"))).toEqual({ nodes: {} });
});
it("round-trips per-node state through disk", () => {
const path = serviceStatePath(dir);
const state = {
nodes: {
"12345678901234567890": {
lastSuccessfulConnection: "2026-07-26T20:00:00Z",
lastSuccessfulSync: "2026-07-26T20:00:02Z",
lastAttemptedSync: "2026-07-26T20:00:01Z",
lastError: null,
},
"2": { ...EMPTY_NODE_STATE, lastError: "unreachable" },
},
};
writeServiceState(path, state);
expect(readServiceState(path)).toEqual(state);
});
it("leaves no temporary file behind after writing", () => {
const path = serviceStatePath(dir);
writeServiceState(path, { nodes: {} });
expect(readdirSync(dir)).toEqual(["service-state.json"]);
});
it("returns empty state for a corrupt file instead of throwing", () => {
const path = join(dir, "corrupt.json");
writeFileSync(path, "{ this is not json");
expect(readServiceState(path)).toEqual({ nodes: {} });
});
it("drops malformed node keys and wrongly typed fields", () => {
const path = join(dir, "typed.json");
writeFileSync(
path,
JSON.stringify({
nodes: {
"not-a-node-id": { lastError: "x" },
"7": { lastError: ["array"], lastSuccessfulSync: "2026-07-26T20:00:02Z" },
},
}),
);
expect(readServiceState(path)).toEqual({
nodes: { "7": { ...EMPTY_NODE_STATE, lastSuccessfulSync: "2026-07-26T20:00:02Z" } },
});
});
it("merges patches into one node without touching others", () => {
const path = serviceStatePath(dir);
updateNodeState(path, 1n, { lastError: "boom" });
updateNodeState(path, 2n, { lastSuccessfulSync: "2026-07-26T20:00:02Z" });
updateNodeState(path, 1n, { lastAttemptedSync: "2026-07-26T20:00:01Z" });
const state = readServiceState(path);
expect(nodeState(state, 1n)).toEqual({
...EMPTY_NODE_STATE,
lastError: "boom",
lastAttemptedSync: "2026-07-26T20:00:01Z",
});
expect(nodeState(state, 2n)).toEqual({
...EMPTY_NODE_STATE,
lastSuccessfulSync: "2026-07-26T20:00:02Z",
});
});
it("removes a node's entry", () => {
const path = serviceStatePath(dir);
updateNodeState(path, 1n, { lastError: "boom" });
updateNodeState(path, 2n, {});
removeNodeState(path, 1n);
const state = readServiceState(path);
expect(Object.keys(state.nodes)).toEqual(["2"]);
expect(nodeState(state, 1n)).toEqual(EMPTY_NODE_STATE);
});
});
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