import { describe, expect, it } from "@suaveplan/testing/runner";
import { parseSdl, stripCommentsAndDescriptions } from "./parse-sdl.js";

describe("parseSdl", () => {
    it("recognises type and extend blocks", { timeout: 5000 }, () => {
        const blocks = parseSdl(
            "type Invoice { id: ID! } extend type Query { invoices: [Invoice!]! }"
        );
        expect(blocks).toHaveLength(2);
        expect(blocks[0]?.kind).toBe("type");
        expect(blocks[0]?.typeName).toBe("Invoice");
        expect(blocks[1]?.kind).toBe("extend");
        expect(blocks[1]?.typeName).toBe("Query");
    });

    it("extracts field names", { timeout: 5000 }, () => {
        const blocks = parseSdl(`
            type Invoice {
                id: ID!
                total: Int!
                lines(limit: Int): [Line!]!
            }
        `);
        expect(blocks[0]?.fields).toEqual(["id", "total", "lines"]);
    });

    it("strips comments before parsing", { timeout: 5000 }, () => {
        const blocks = parseSdl(`
            # leading comment
            type Q {
                a: Int! # inline comment
            }
        `);
        expect(blocks[0]?.fields).toEqual(["a"]);
    });

    it("strips block-string descriptions", { timeout: 5000 }, () => {
        const stripped = stripCommentsAndDescriptions(
            '"""description""" type X { a: Int! }'
        );
        expect(stripped).not.toContain("description");
        expect(stripped).toContain("type X");
    });

    it("ignores empty bodies gracefully", { timeout: 5000 }, () => {
        const blocks = parseSdl("type X { }");
        expect(blocks[0]?.fields).toEqual([]);
    });

    it("handles implements clause", { timeout: 5000 }, () => {
        const blocks = parseSdl(
            "type Invoice implements Node & Audited { id: ID! }"
        );
        expect(blocks[0]?.typeName).toBe("Invoice");
        expect(blocks[0]?.fields).toEqual(["id"]);
    });

    it("returns empty list for non-type SDL", { timeout: 5000 }, () => {
        const blocks = parseSdl("scalar DateTime");
        expect(blocks).toEqual([]);
    });
});