import path from "node:path";
import fs from "node:fs";
import { fileURLToPath } from "node:url";

import {expect} from "vitest";

import {gqlSchemaToReferences} from "../src";
import {GQLSchemaToReferencesOptions} from "../src/types";

const __dirname = path.dirname(fileURLToPath(import.meta.url));

// Helper function to run a test with a specific fixture
export async function testGqlSchemaToReferences(fixtureName: string, options?: GQLSchemaToReferencesOptions) {
    const schemaLocation = fullFixturePath(`${fixtureName}/input.graphql`)
    const result = await gqlSchemaToReferences(schemaLocation, options);
    // saveResultAsOutput(fixtureName, result)
    const expectedOutput = readFixtureOutput(`${fixtureName}/output.json`);

    try {
        expect(result).toEqual(expectedOutput);
    } catch (error) {
        if (result?.length > 100) {
            throw new Error(`FAILED: The diff result is too long (${result.length} items) to show.`);
        }
        throw error;
    }
}

// Helper function to read fixture output
function readFixtureOutput(name: string) {
    const fixturePath = fullFixturePath(name);
    return JSON.parse(fs.readFileSync(fixturePath, "utf8"));
}

function fullFixturePath(name: string) {
    return path.join(__dirname, "../__fixtures__", name);
}

function saveResultAsOutput(fixtureName: string, result: any) {
    fs.writeFileSync(fullFixturePath(fixtureName + "/output.json"), JSON.stringify(result, null, 2));
}

export function getFixturePath(name: string): string {
    return path.join(__dirname, "../__fixtures__", name);
}