import { existsSync, mkdtempSync, readFileSync, rmSync } from "node:fs";import { join, resolve } from "node:path";import { tmpdir } from "node:os"; import { describe, expect, it } from "vitest"; import {  buildServerSettingsJsonSchema,  getVersionedServerSettingsSchemaRelativePath,  SERVER_SETTINGS_SCHEMA_RELATIVE_PATH,  writeServerSettingsJsonSchemas,} from "./server-settings-schema"; describe("buildServerSettingsJsonSchema", () => {  it("builds a JSON schema document for settings.json", () => {    const schema = buildServerSettingsJsonSchema();     expect(schema.$schema).toBe("https://json-schema.org/draft/2020-12/schema");    expect(schema.title).toBe("T3 Code Server Settings");    expect(schema.type).toBe("object");    expect(schema.additionalProperties).toBe(false);    expect(schema.properties).toMatchObject({      $schema: {        type: "string",      },      enableAssistantStreaming: {        description: "Show token-by-token output while a response is in progress.",      },      defaultThreadEnvMode: {        description: "Pick the default workspace mode for newly created draft threads.",      },      textGenerationModelSelection: {        description:          "Configure the model used for generated commit messages, PR titles, and similar Git text.",      },      providers: {        description: expect.stringContaining("Provider-specific"),      },    });  });   it("writes latest and versioned schema files", () => {    const rootDir = mkdtempSync(join(tmpdir(), "t3-server-settings-schema-"));     try {      const result = writeServerSettingsJsonSchemas({ rootDir, version: "1.2.3" });      expect(result.changed).toBe(true);       const latestSchema = JSON.parse(        readFileSync(resolve(rootDir, SERVER_SETTINGS_SCHEMA_RELATIVE_PATH), "utf8"),      ) as Record<string, unknown>;      const versionedSchema = JSON.parse(        readFileSync(          resolve(rootDir, getVersionedServerSettingsSchemaRelativePath("1.2.3")),          "utf8",        ),      ) as Record<string, unknown>;       expect(latestSchema).toEqual(versionedSchema);      expect(latestSchema.title).toBe("T3 Code Server Settings");    } finally {      rmSync(rootDir, { recursive: true, force: true });    }  });   it("skips writing a versioned schema file when the latest schema is unchanged", () => {    const rootDir = mkdtempSync(join(tmpdir(), "t3-server-settings-schema-"));     try {      const latestOnly = writeServerSettingsJsonSchemas({ rootDir });      expect(latestOnly.changed).toBe(true);       const result = writeServerSettingsJsonSchemas({ rootDir, version: "1.2.3" });      expect(result.changed).toBe(false);      expect(        existsSync(resolve(rootDir, getVersionedServerSettingsSchemaRelativePath("1.2.3"))),      ).toBe(false);    } finally {      rmSync(rootDir, { recursive: true, force: true });    }  });});